stm32temp: eeprom.c annotate

annotate eeprom.c @ 78:4c1db877452b

Add small note.

author	Daniel O'Connor <darius@dons.net.au>
date	Tue, 23 Apr 2013 20:46:37 +0930
parents	7dd28b96a716
children

rev	line source
77 7dd28b96a716 Add note about where it came from. Daniel O'Connor <darius@dons.net.au> parents: 76 diff changeset	1 /* From
7dd28b96a716 Add note about where it came from. Daniel O'Connor <darius@dons.net.au> parents: 76 diff changeset	2 * http://www.st.com/web/catalog/tools/FM147/CL1794/SC961/SS1743/PF257846
7dd28b96a716 Add note about where it came from. Daniel O'Connor <darius@dons.net.au> parents: 76 diff changeset	3 * stsw-stm32010.zip
7dd28b96a716 Add note about where it came from. Daniel O'Connor <darius@dons.net.au> parents: 76 diff changeset	4 */
7dd28b96a716 Add note about where it came from. Daniel O'Connor <darius@dons.net.au> parents: 76 diff changeset	5
76 f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	6 /**
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	7 ******************************************************************************
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	8 * @file EEPROM_Emulation/src/eeprom.c
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	9 * @author MCD Application Team
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	10 * @version V3.1.0
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	11 * @date 07/27/2009
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	12 * @brief This file provides all the EEPROM emulation firmware functions.
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	13 ******************************************************************************
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	14 * @copy
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	15 *
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	16 * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	17 * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	18 * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	19 * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	20 * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	21 * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	22 *
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	23 * <h2><center>© COPYRIGHT 2009 STMicroelectronics</center></h2>
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	24 */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	25 /** @addtogroup EEPROM_Emulation
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	26 * @{
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	27 */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	28
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	29 /* Includes ------------------------------------------------------------------*/
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	30 #include <stdio.h>
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	31 #include <stdlib.h>
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	32 #include <string.h>
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	33 #include "eeprom.h"
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	34
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	35 /* Private typedef -----------------------------------------------------------*/
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	36 /* Private define ------------------------------------------------------------*/
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	37 /* Private macro -------------------------------------------------------------*/
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	38 /* Private variables ---------------------------------------------------------*/
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	39
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	40 /* Global variable used to store variable value in read sequence */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	41 uint16_t DataVar = 0;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	42
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	43 /* Virtual address defined by the user: 0xFFFF value is prohibited */
78 4c1db877452b Add small note. Daniel O'Connor <darius@dons.net.au> parents: 77 diff changeset	44 /* XXX: These appear to just be used by EE_Init and EE_PageTransfer to know what
4c1db877452b Add small note. Daniel O'Connor <darius@dons.net.au> parents: 77 diff changeset	45 * to copy over
4c1db877452b Add small note. Daniel O'Connor <darius@dons.net.au> parents: 77 diff changeset	46 */
76 f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	47 const uint16_t VirtAddVarTab[NumbOfVar] = { 1000, 1001, 1002 };
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	48
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	49 /* Private function prototypes -----------------------------------------------*/
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	50 /* Private functions ---------------------------------------------------------*/
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	51 static uint16_t EE_FindValidPage(uint8_t Operation);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	52 static uint16_t EE_VerifyPageFullWriteVariable(uint16_t VirtAddress, uint16_t Data);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	53 static uint16_t EE_PageTransfer(uint16_t VirtAddress, uint16_t Data);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	54
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	55 /**
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	56 * @brief Restore the pages to a known good state in case of page's status
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	57 * corruption after a power loss.
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	58 * @param None.
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	59 * @retval - Flash error code: on write Flash error
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	60 * - FLASH_COMPLETE: on success
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	61 */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	62 uint16_t EE_Init(void)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	63 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	64 uint16_t PageStatus0 = 6, PageStatus1 = 6;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	65 uint16_t VarIdx = 0;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	66 uint16_t EepromStatus = 0, ReadStatus = 0;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	67 int16_t x = -1;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	68 uint16_t FlashStatus;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	69
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	70 /* Get Page0 status */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	71 PageStatus0 = (__IO uint16_t)PAGE0_BASE_ADDRESS;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	72 /* Get Page1 status */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	73 PageStatus1 = (__IO uint16_t)PAGE1_BASE_ADDRESS;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	74
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	75 /* Check for invalid header states and repair if necessary */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	76 switch (PageStatus0)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	77 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	78 case ERASED:
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	79 if (PageStatus1 == VALID_PAGE) /* Page0 erased, Page1 valid */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	80 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	81 /* Erase Page0 */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	82 FlashStatus = FLASH_ErasePage(PAGE0_BASE_ADDRESS);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	83 /* If erase operation was failed, a Flash error code is returned */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	84 if (FlashStatus != FLASH_COMPLETE)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	85 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	86 return FlashStatus;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	87 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	88 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	89 else if (PageStatus1 == RECEIVE_DATA) /* Page0 erased, Page1 receive */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	90 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	91 /* Erase Page0 */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	92 FlashStatus = FLASH_ErasePage(PAGE0_BASE_ADDRESS);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	93 /* If erase operation was failed, a Flash error code is returned */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	94 if (FlashStatus != FLASH_COMPLETE)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	95 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	96 return FlashStatus;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	97 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	98 /* Mark Page1 as valid */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	99 FlashStatus = FLASH_ProgramHalfWord(PAGE1_BASE_ADDRESS, VALID_PAGE);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	100 /* If program operation was failed, a Flash error code is returned */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	101 if (FlashStatus != FLASH_COMPLETE)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	102 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	103 return FlashStatus;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	104 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	105 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	106 else /* First EEPROM access (Page0&1 are erased) or invalid state -> format EEPROM */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	107 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	108 /* Erase both Page0 and Page1 and set Page0 as valid page */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	109 FlashStatus = EE_Format();
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	110 /* If erase/program operation was failed, a Flash error code is returned */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	111 if (FlashStatus != FLASH_COMPLETE)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	112 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	113 return FlashStatus;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	114 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	115 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	116 break;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	117
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	118 case RECEIVE_DATA:
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	119 if (PageStatus1 == VALID_PAGE) /* Page0 receive, Page1 valid */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	120 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	121 /* Transfer data from Page1 to Page0 */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	122 for (VarIdx = 0; VarIdx < NumbOfVar; VarIdx++)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	123 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	124 if (( (__IO uint16_t)(PAGE0_BASE_ADDRESS + 6)) == VirtAddVarTab[VarIdx])
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	125 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	126 x = VarIdx;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	127 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	128 if (VarIdx != x)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	129 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	130 /* Read the last variables' updates */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	131 ReadStatus = EE_ReadVariable(VirtAddVarTab[VarIdx], &DataVar);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	132 /* In case variable corresponding to the virtual address was found */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	133 if (ReadStatus != 0x1)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	134 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	135 /* Transfer the variable to the Page0 */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	136 EepromStatus = EE_VerifyPageFullWriteVariable(VirtAddVarTab[VarIdx], DataVar);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	137 /* If program operation was failed, a Flash error code is returned */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	138 if (EepromStatus != FLASH_COMPLETE)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	139 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	140 return EepromStatus;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	141 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	142 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	143 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	144 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	145 /* Mark Page0 as valid */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	146 FlashStatus = FLASH_ProgramHalfWord(PAGE0_BASE_ADDRESS, VALID_PAGE);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	147 /* If program operation was failed, a Flash error code is returned */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	148 if (FlashStatus != FLASH_COMPLETE)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	149 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	150 return FlashStatus;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	151 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	152 /* Erase Page1 */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	153 FlashStatus = FLASH_ErasePage(PAGE1_BASE_ADDRESS);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	154 /* If erase operation was failed, a Flash error code is returned */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	155 if (FlashStatus != FLASH_COMPLETE)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	156 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	157 return FlashStatus;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	158 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	159 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	160 else if (PageStatus1 == ERASED) /* Page0 receive, Page1 erased */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	161 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	162 /* Erase Page1 */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	163 FlashStatus = FLASH_ErasePage(PAGE1_BASE_ADDRESS);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	164 /* If erase operation was failed, a Flash error code is returned */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	165 if (FlashStatus != FLASH_COMPLETE)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	166 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	167 return FlashStatus;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	168 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	169 /* Mark Page0 as valid */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	170 FlashStatus = FLASH_ProgramHalfWord(PAGE0_BASE_ADDRESS, VALID_PAGE);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	171 /* If program operation was failed, a Flash error code is returned */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	172 if (FlashStatus != FLASH_COMPLETE)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	173 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	174 return FlashStatus;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	175 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	176 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	177 else /* Invalid state -> format eeprom */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	178 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	179 /* Erase both Page0 and Page1 and set Page0 as valid page */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	180 FlashStatus = EE_Format();
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	181 /* If erase/program operation was failed, a Flash error code is returned */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	182 if (FlashStatus != FLASH_COMPLETE)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	183 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	184 return FlashStatus;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	185 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	186 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	187 break;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	188
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	189 case VALID_PAGE:
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	190 if (PageStatus1 == VALID_PAGE) /* Invalid state -> format eeprom */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	191 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	192 /* Erase both Page0 and Page1 and set Page0 as valid page */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	193 FlashStatus = EE_Format();
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	194 /* If erase/program operation was failed, a Flash error code is returned */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	195 if (FlashStatus != FLASH_COMPLETE)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	196 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	197 return FlashStatus;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	198 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	199 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	200 else if (PageStatus1 == ERASED) /* Page0 valid, Page1 erased */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	201 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	202 /* Erase Page1 */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	203 FlashStatus = FLASH_ErasePage(PAGE1_BASE_ADDRESS);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	204 /* If erase operation was failed, a Flash error code is returned */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	205 if (FlashStatus != FLASH_COMPLETE)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	206 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	207 return FlashStatus;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	208 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	209 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	210 else /* Page0 valid, Page1 receive */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	211 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	212 /* Transfer data from Page0 to Page1 */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	213 for (VarIdx = 0; VarIdx < NumbOfVar; VarIdx++)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	214 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	215 if (((__IO uint16_t)(PAGE1_BASE_ADDRESS + 6)) == VirtAddVarTab[VarIdx])
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	216 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	217 x = VarIdx;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	218 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	219 if (VarIdx != x)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	220 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	221 /* Read the last variables' updates */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	222 ReadStatus = EE_ReadVariable(VirtAddVarTab[VarIdx], &DataVar);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	223 /* In case variable corresponding to the virtual address was found */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	224 if (ReadStatus != 0x1)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	225 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	226 /* Transfer the variable to the Page1 */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	227 EepromStatus = EE_VerifyPageFullWriteVariable(VirtAddVarTab[VarIdx], DataVar);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	228 /* If program operation was failed, a Flash error code is returned */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	229 if (EepromStatus != FLASH_COMPLETE)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	230 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	231 return EepromStatus;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	232 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	233 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	234 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	235 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	236 /* Mark Page1 as valid */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	237 FlashStatus = FLASH_ProgramHalfWord(PAGE1_BASE_ADDRESS, VALID_PAGE);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	238 /* If program operation was failed, a Flash error code is returned */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	239 if (FlashStatus != FLASH_COMPLETE)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	240 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	241 return FlashStatus;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	242 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	243 /* Erase Page0 */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	244 FlashStatus = FLASH_ErasePage(PAGE0_BASE_ADDRESS);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	245 /* If erase operation was failed, a Flash error code is returned */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	246 if (FlashStatus != FLASH_COMPLETE)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	247 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	248 return FlashStatus;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	249 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	250 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	251 break;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	252
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	253 default: /* Any other state -> format eeprom */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	254 /* Erase both Page0 and Page1 and set Page0 as valid page */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	255 FlashStatus = EE_Format();
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	256 /* If erase/program operation was failed, a Flash error code is returned */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	257 if (FlashStatus != FLASH_COMPLETE)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	258 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	259 return FlashStatus;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	260 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	261 break;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	262 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	263
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	264 return FLASH_COMPLETE;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	265 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	266
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	267 /**
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	268 * @brief Returns the last stored variable data, if found, which correspond to
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	269 * the passed virtual address
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	270 * @param VirtAddress: Variable virtual address
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	271 * @param Data: Global variable contains the read variable value
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	272 * @retval Success or error status:
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	273 * - 0: if variable was found
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	274 * - 1: if the variable was not found
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	275 * - NO_VALID_PAGE: if no valid page was found.
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	276 */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	277 uint16_t EE_ReadVariable(uint16_t VirtAddress, uint16_t* Data)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	278 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	279 uint16_t ValidPage = PAGE0;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	280 uint16_t AddressValue = 0x5555, ReadStatus = 1;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	281 uint32_t Address = 0x08010000, PageStartAddress = 0x08010000;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	282
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	283 /* Get active Page for read operation */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	284 ValidPage = EE_FindValidPage(READ_FROM_VALID_PAGE);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	285
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	286 /* Check if there is no valid page */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	287 if (ValidPage == NO_VALID_PAGE)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	288 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	289 return NO_VALID_PAGE;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	290 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	291
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	292 /* Get the valid Page start Address */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	293 PageStartAddress = (uint32_t)(EEPROM_START_ADDRESS + (uint32_t)(ValidPage * PAGE_SIZE));
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	294
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	295 /* Get the valid Page end Address */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	296 Address = (uint32_t)((EEPROM_START_ADDRESS - 2) + (uint32_t)((1 + ValidPage) * PAGE_SIZE));
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	297
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	298 /* Check each active page address starting from end */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	299 while (Address > (PageStartAddress + 2))
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	300 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	301 /* Get the current location content to be compared with virtual address */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	302 AddressValue = ((__IO uint16_t)Address);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	303
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	304 /* Compare the read address with the virtual address */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	305 if (AddressValue == VirtAddress)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	306 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	307 /* Get content of Address-2 which is variable value */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	308 Data = ((__IO uint16_t*)(Address - 2));
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	309
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	310 /* In case variable value is read, reset ReadStatus flag */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	311 ReadStatus = 0;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	312
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	313 break;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	314 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	315 else
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	316 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	317 /* Next address location */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	318 Address = Address - 4;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	319 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	320 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	321
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	322 /* Return ReadStatus value: (0: variable exist, 1: variable doesn't exist) */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	323 return ReadStatus;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	324 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	325
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	326 /**
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	327 * @brief Writes/upadtes variable data in EEPROM.
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	328 * @param VirtAddress: Variable virtual address
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	329 * @param Data: 16 bit data to be written
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	330 * @retval Success or error status:
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	331 * - FLASH_COMPLETE: on success
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	332 * - PAGE_FULL: if valid page is full
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	333 * - NO_VALID_PAGE: if no valid page was found
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	334 * - Flash error code: on write Flash error
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	335 */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	336 uint16_t EE_WriteVariable(uint16_t VirtAddress, uint16_t Data)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	337 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	338 uint16_t Status = 0;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	339
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	340 /* Write the variable virtual address and value in the EEPROM */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	341 Status = EE_VerifyPageFullWriteVariable(VirtAddress, Data);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	342
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	343 /* In case the EEPROM active page is full */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	344 if (Status == PAGE_FULL)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	345 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	346 /* Perform Page transfer */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	347 Status = EE_PageTransfer(VirtAddress, Data);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	348 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	349
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	350 /* Return last operation status */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	351 return Status;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	352 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	353
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	354 /**
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	355 * @brief Erases PAGE0 and PAGE1 and writes VALID_PAGE header to PAGE0
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	356 * @param None
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	357 * @retval Status of the last operation (Flash write or erase) done during
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	358 * EEPROM formating
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	359 */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	360
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	361 FLASH_Status EE_Format(void)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	362 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	363 FLASH_Status FlashStatus = FLASH_COMPLETE;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	364
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	365 /* Erase Page0 */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	366 FlashStatus = FLASH_ErasePage(PAGE0_BASE_ADDRESS);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	367
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	368 /* If erase operation was failed, a Flash error code is returned */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	369 if (FlashStatus != FLASH_COMPLETE)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	370 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	371 return FlashStatus;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	372 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	373
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	374 /* Set Page0 as valid page: Write VALID_PAGE at Page0 base address */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	375 FlashStatus = FLASH_ProgramHalfWord(PAGE0_BASE_ADDRESS, VALID_PAGE);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	376
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	377 /* If program operation was failed, a Flash error code is returned */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	378 if (FlashStatus != FLASH_COMPLETE)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	379 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	380 return FlashStatus;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	381 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	382
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	383 /* Erase Page1 */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	384 FlashStatus = FLASH_ErasePage(PAGE1_BASE_ADDRESS);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	385
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	386 /* Return Page1 erase operation status */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	387 return FlashStatus;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	388 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	389
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	390 /**
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	391 * @brief Find valid Page for write or read operation
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	392 * @param Operation: operation to achieve on the valid page.
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	393 * This parameter can be one of the following values:
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	394 * @arg READ_FROM_VALID_PAGE: read operation from valid page
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	395 * @arg WRITE_IN_VALID_PAGE: write operation from valid page
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	396 * @retval Valid page number (PAGE0 or PAGE1) or NO_VALID_PAGE in case
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	397 * of no valid page was found
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	398 */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	399 static uint16_t EE_FindValidPage(uint8_t Operation)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	400 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	401 uint16_t PageStatus0 = 6, PageStatus1 = 6;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	402
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	403 /* Get Page0 actual status */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	404 PageStatus0 = ((__IO uint16_t)PAGE0_BASE_ADDRESS);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	405
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	406 /* Get Page1 actual status */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	407 PageStatus1 = ((__IO uint16_t)PAGE1_BASE_ADDRESS);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	408
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	409 /* Write or read operation */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	410 switch (Operation)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	411 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	412 case WRITE_IN_VALID_PAGE: /* ---- Write operation ---- */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	413 if (PageStatus1 == VALID_PAGE)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	414 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	415 /* Page0 receiving data */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	416 if (PageStatus0 == RECEIVE_DATA)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	417 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	418 return PAGE0; /* Page0 valid */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	419 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	420 else
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	421 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	422 return PAGE1; /* Page1 valid */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	423 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	424 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	425 else if (PageStatus0 == VALID_PAGE)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	426 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	427 /* Page1 receiving data */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	428 if (PageStatus1 == RECEIVE_DATA)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	429 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	430 return PAGE1; /* Page1 valid */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	431 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	432 else
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	433 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	434 return PAGE0; /* Page0 valid */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	435 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	436 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	437 else
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	438 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	439 return NO_VALID_PAGE; /* No valid Page */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	440 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	441
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	442 case READ_FROM_VALID_PAGE: /* ---- Read operation ---- */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	443 if (PageStatus0 == VALID_PAGE)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	444 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	445 return PAGE0; /* Page0 valid */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	446 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	447 else if (PageStatus1 == VALID_PAGE)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	448 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	449 return PAGE1; /* Page1 valid */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	450 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	451 else
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	452 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	453 return NO_VALID_PAGE ; /* No valid Page */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	454 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	455
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	456 default:
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	457 return PAGE0; /* Page0 valid */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	458 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	459 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	460
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	461 /**
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	462 * @brief Verify if active page is full and Writes variable in EEPROM.
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	463 * @param VirtAddress: 16 bit virtual address of the variable
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	464 * @param Data: 16 bit data to be written as variable value
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	465 * @retval Success or error status:
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	466 * - FLASH_COMPLETE: on success
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	467 * - PAGE_FULL: if valid page is full
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	468 * - NO_VALID_PAGE: if no valid page was found
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	469 * - Flash error code: on write Flash error
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	470 */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	471 static uint16_t EE_VerifyPageFullWriteVariable(uint16_t VirtAddress, uint16_t Data)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	472 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	473 FLASH_Status FlashStatus = FLASH_COMPLETE;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	474 uint16_t ValidPage = PAGE0;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	475 uint32_t Address = 0x08010000, PageEndAddress = 0x080107FF;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	476
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	477 /* Get valid Page for write operation */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	478 ValidPage = EE_FindValidPage(WRITE_IN_VALID_PAGE);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	479
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	480 /* Check if there is no valid page */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	481 if (ValidPage == NO_VALID_PAGE)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	482 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	483 return NO_VALID_PAGE;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	484 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	485
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	486 /* Get the valid Page start Address */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	487 Address = (uint32_t)(EEPROM_START_ADDRESS + (uint32_t)(ValidPage * PAGE_SIZE));
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	488
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	489 /* Get the valid Page end Address */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	490 PageEndAddress = (uint32_t)((EEPROM_START_ADDRESS - 2) + (uint32_t)((1 + ValidPage) * PAGE_SIZE));
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	491
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	492 /* Check each active page address starting from begining */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	493 while (Address < PageEndAddress)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	494 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	495 /* Verify if Address and Address+2 contents are 0xFFFFFFFF */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	496 if (((__IO uint32_t)Address) == 0xFFFFFFFF)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	497 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	498 /* Set variable data */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	499 FlashStatus = FLASH_ProgramHalfWord(Address, Data);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	500 /* If program operation was failed, a Flash error code is returned */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	501 if (FlashStatus != FLASH_COMPLETE)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	502 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	503 return FlashStatus;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	504 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	505 /* Set variable virtual address */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	506 FlashStatus = FLASH_ProgramHalfWord(Address + 2, VirtAddress);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	507 /* Return program operation status */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	508 return FlashStatus;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	509 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	510 else
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	511 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	512 /* Next address location */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	513 Address = Address + 4;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	514 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	515 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	516
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	517 /* Return PAGE_FULL in case the valid page is full */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	518 return PAGE_FULL;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	519 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	520
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	521 /**
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	522 * @brief Transfers last updated variables data from the full Page to
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	523 * an empty one.
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	524 * @param VirtAddress: 16 bit virtual address of the variable
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	525 * @param Data: 16 bit data to be written as variable value
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	526 * @retval Success or error status:
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	527 * - FLASH_COMPLETE: on success
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	528 * - PAGE_FULL: if valid page is full
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	529 * - NO_VALID_PAGE: if no valid page was found
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	530 * - Flash error code: on write Flash error
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	531 */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	532 static uint16_t EE_PageTransfer(uint16_t VirtAddress, uint16_t Data)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	533 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	534 FLASH_Status FlashStatus = FLASH_COMPLETE;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	535 uint32_t NewPageAddress = 0x080103FF, OldPageAddress = 0x08010000;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	536 uint16_t ValidPage = PAGE0, VarIdx = 0;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	537 uint16_t EepromStatus = 0, ReadStatus = 0;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	538
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	539 /* Get active Page for read operation */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	540 ValidPage = EE_FindValidPage(READ_FROM_VALID_PAGE);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	541
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	542 if (ValidPage == PAGE1) /* Page1 valid */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	543 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	544 /* New page address where variable will be moved to */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	545 NewPageAddress = PAGE0_BASE_ADDRESS;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	546
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	547 /* Old page address where variable will be taken from */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	548 OldPageAddress = PAGE1_BASE_ADDRESS;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	549 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	550 else if (ValidPage == PAGE0) /* Page0 valid */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	551 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	552 /* New page address where variable will be moved to */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	553 NewPageAddress = PAGE1_BASE_ADDRESS;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	554
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	555 /* Old page address where variable will be taken from */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	556 OldPageAddress = PAGE0_BASE_ADDRESS;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	557 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	558 else
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	559 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	560 return NO_VALID_PAGE; /* No valid Page */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	561 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	562
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	563 /* Set the new Page status to RECEIVE_DATA status */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	564 FlashStatus = FLASH_ProgramHalfWord(NewPageAddress, RECEIVE_DATA);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	565 /* If program operation was failed, a Flash error code is returned */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	566 if (FlashStatus != FLASH_COMPLETE)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	567 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	568 return FlashStatus;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	569 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	570
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	571 /* Write the variable passed as parameter in the new active page */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	572 EepromStatus = EE_VerifyPageFullWriteVariable(VirtAddress, Data);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	573 /* If program operation was failed, a Flash error code is returned */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	574 if (EepromStatus != FLASH_COMPLETE)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	575 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	576 return EepromStatus;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	577 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	578
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	579 /* Transfer process: transfer variables from old to the new active page */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	580 for (VarIdx = 0; VarIdx < NumbOfVar; VarIdx++)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	581 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	582 if (VirtAddVarTab[VarIdx] != VirtAddress) /* Check each variable except the one passed as parameter */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	583 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	584 /* Read the other last variable updates */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	585 ReadStatus = EE_ReadVariable(VirtAddVarTab[VarIdx], &DataVar);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	586 /* In case variable corresponding to the virtual address was found */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	587 if (ReadStatus != 0x1)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	588 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	589 /* Transfer the variable to the new active page */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	590 EepromStatus = EE_VerifyPageFullWriteVariable(VirtAddVarTab[VarIdx], DataVar);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	591 /* If program operation was failed, a Flash error code is returned */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	592 if (EepromStatus != FLASH_COMPLETE)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	593 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	594 return EepromStatus;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	595 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	596 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	597 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	598 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	599
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	600 /* Erase the old Page: Set old Page status to ERASED status */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	601 FlashStatus = FLASH_ErasePage(OldPageAddress);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	602 /* If erase operation was failed, a Flash error code is returned */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	603 if (FlashStatus != FLASH_COMPLETE)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	604 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	605 return FlashStatus;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	606 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	607
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	608 /* Set new Page status to VALID_PAGE status */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	609 FlashStatus = FLASH_ProgramHalfWord(NewPageAddress, VALID_PAGE);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	610 /* If program operation was failed, a Flash error code is returned */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	611 if (FlashStatus != FLASH_COMPLETE)
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	612 {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	613 return FlashStatus;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	614 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	615
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	616 /* Return last operation flash status */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	617 return FlashStatus;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	618 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	619
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	620 void
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	621 FLASH_UnlockClear(void) {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	622 FLASH_Unlock();
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	623 FLASH_ClearFlag(FLASH_FLAG_BSY \| FLASH_FLAG_EOP \| FLASH_FLAG_PGERR \| FLASH_FLAG_WRPRTERR);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	624 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	625
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	626 void
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	627 EE_Cmd(int argc, char **argv) {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	628 uint16_t adr, val, err;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	629
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	630 if (argc == 0) {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	631 fputs("No command specified\n", stdout);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	632 return;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	633 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	634
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	635 if (!strcmp(argv[0], "in")) {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	636 FLASH_UnlockClear();
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	637 printf("Init returned %d\n", EE_Init());
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	638 FLASH_Lock();
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	639 } else if (!strcmp(argv[0], "fm")) {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	640 FLASH_UnlockClear();
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	641 printf("Format returned %d\n", EE_Format());
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	642 FLASH_Lock();
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	643 } else if (!strcmp(argv[0], "rd")) {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	644 if (argc != 2) {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	645 fputs("Incorrect number of arguments\n", stdout);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	646 return;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	647 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	648 adr = atoi(argv[1]);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	649 err = EE_ReadVariable(adr, &val);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	650 printf("Read 0x%04x => 0x%04x (status %d)\n", adr, val, err);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	651 } else if (!strcmp(argv[0], "wr")) {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	652 if (argc != 3) {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	653 fputs("Incorrect number of arguments\n", stdout);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	654 return;
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	655 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	656 adr = atoi(argv[1]);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	657 val = atoi(argv[2]);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	658 FLASH_UnlockClear();
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	659 err = EE_WriteVariable(adr, val);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	660 FLASH_Lock();
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	661 printf("Write 0x%04x <= 0x%04x (status %d)\n", adr, val, err);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	662 } else {
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	663 fputs("Unknown command\n", stdout);
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	664 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	665 }
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	666
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	667 /**
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	668 * @}
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	669 */
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	670
f1c9a51e368a Add EEPROM emulation from AN2594. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	671 /***************** (C) COPYRIGHT 2009 STMicroelectronics *END OF FILE**/

Mercurial > ~darius > hgwebdir.cgi > stm32temp

annotate eeprom.c @ 78:4c1db877452b