diff libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/PWR/STOP/main.c @ 0:c59513fd84fb

Initial commit of STM32 test code.
author Daniel O'Connor <darius@dons.net.au>
date Mon, 03 Oct 2011 21:19:15 +1030
parents
children
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/PWR/STOP/main.c	Mon Oct 03 21:19:15 2011 +1030
@@ -0,0 +1,304 @@
+/**
+  ******************************************************************************
+  * @file    PWR/STOP/main.c 
+  * @author  MCD Application Team
+  * @version V3.5.0
+  * @date    08-April-2011
+  * @brief   Main program body.
+  ******************************************************************************
+  * @attention
+  *
+  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
+  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
+  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
+  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
+  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
+  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
+  *
+  * <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>
+  ******************************************************************************
+  */ 
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f10x.h"
+#include "stm32_eval.h"
+
+/** @addtogroup STM32F10x_StdPeriph_Examples
+  * @{
+  */
+
+/** @addtogroup PWR_STOP
+  * @{
+  */ 
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+extern __IO uint32_t TimingDelay;
+ErrorStatus HSEStartUpStatus;
+
+/* Private function prototypes -----------------------------------------------*/
+void SYSCLKConfig_STOP(void);
+void EXTI_Configuration(void);
+void RTC_Configuration(void);
+void NVIC_Configuration(void);
+void SysTick_Configuration(void);
+void Delay(__IO uint32_t nTime);
+
+/* Private functions ---------------------------------------------------------*/
+
+/**
+  * @brief   Main program.
+  * @param  None
+  * @retval None
+  */
+int main(void)
+{
+  /*!< At this stage the microcontroller clock setting is already configured, 
+       this is done through SystemInit() function which is called from startup
+       file (startup_stm32f10x_xx.s) before to branch to application main.
+       To reconfigure the default setting of SystemInit() function, refer to
+       system_stm32f10x.c file
+     */     
+
+  /* Initialize LEDs and Key Button mounted on STM3210X-EVAL board */       
+  STM_EVAL_LEDInit(LED1);
+  STM_EVAL_LEDInit(LED2);
+  STM_EVAL_LEDInit(LED3);
+  STM_EVAL_PBInit(BUTTON_KEY, BUTTON_MODE_EXTI);
+
+  /* Enable PWR and BKP clock */
+  RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);
+
+  /* Configure EXTI Line to generate an interrupt on falling edge */
+  EXTI_Configuration();
+
+  /* Configure RTC clock source and prescaler */
+  RTC_Configuration();
+
+  /* NVIC configuration */
+  NVIC_Configuration();
+
+  /* Configure the SysTick to generate an interrupt each 1 millisecond */
+  SysTick_Configuration();
+
+  /* Turn on LED1 */
+  STM_EVAL_LEDOn(LED1);
+  
+  while (1)
+  {
+    /* Insert 1.5 second delay */
+    Delay(1500);
+
+    /* Wait till RTC Second event occurs */
+    RTC_ClearFlag(RTC_FLAG_SEC);
+    while(RTC_GetFlagStatus(RTC_FLAG_SEC) == RESET);
+
+    /* Alarm in 3 second */
+    RTC_SetAlarm(RTC_GetCounter()+ 3);
+    /* Wait until last write operation on RTC registers has finished */
+    RTC_WaitForLastTask();
+
+    /* Turn off LED1 */
+    STM_EVAL_LEDOff(LED1);
+
+    /* Request to enter STOP mode with regulator in low power mode*/
+    PWR_EnterSTOPMode(PWR_Regulator_LowPower, PWR_STOPEntry_WFI);
+    
+    /* At this stage the system has resumed from STOP mode -------------------*/
+    /* Turn on LED1 */
+    STM_EVAL_LEDOn(LED1);
+
+    /* Configures system clock after wake-up from STOP: enable HSE, PLL and select 
+       PLL as system clock source (HSE and PLL are disabled in STOP mode) */
+    SYSCLKConfig_STOP();
+  }
+}
+
+/**
+  * @brief  Configures system clock after wake-up from STOP: enable HSE, PLL
+  *         and select PLL as system clock source.
+  * @param  None
+  * @retval None
+  */
+void SYSCLKConfig_STOP(void)
+{
+  /* Enable HSE */
+  RCC_HSEConfig(RCC_HSE_ON);
+
+  /* Wait till HSE is ready */
+  HSEStartUpStatus = RCC_WaitForHSEStartUp();
+
+  if(HSEStartUpStatus == SUCCESS)
+  {
+
+#ifdef STM32F10X_CL
+    /* Enable PLL2 */ 
+    RCC_PLL2Cmd(ENABLE);
+
+    /* Wait till PLL2 is ready */
+    while(RCC_GetFlagStatus(RCC_FLAG_PLL2RDY) == RESET)
+    {
+    }
+
+#endif
+
+    /* Enable PLL */ 
+    RCC_PLLCmd(ENABLE);
+
+    /* Wait till PLL is ready */
+    while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
+    {
+    }
+
+    /* Select PLL as system clock source */
+    RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
+
+    /* Wait till PLL is used as system clock source */
+    while(RCC_GetSYSCLKSource() != 0x08)
+    {
+    }
+  }
+}
+
+/**
+  * @brief  Configures EXTI Lines.
+  * @param  None
+  * @retval None
+  */
+void EXTI_Configuration(void)
+{
+  EXTI_InitTypeDef EXTI_InitStructure;
+
+  /* Configure EXTI Line17(RTC Alarm) to generate an interrupt on rising edge */
+  EXTI_ClearITPendingBit(EXTI_Line17);
+  EXTI_InitStructure.EXTI_Line = EXTI_Line17;
+  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
+  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
+  EXTI_InitStructure.EXTI_LineCmd = ENABLE;
+  EXTI_Init(&EXTI_InitStructure);
+}
+
+/**
+  * @brief  Configures RTC clock source and prescaler.
+  * @param  None
+  * @retval None
+  */
+void RTC_Configuration(void)
+{
+  /* RTC clock source configuration ------------------------------------------*/
+  /* Allow access to BKP Domain */
+  PWR_BackupAccessCmd(ENABLE);
+
+  /* Reset Backup Domain */
+  BKP_DeInit();
+  
+  /* Enable the LSE OSC */
+  RCC_LSEConfig(RCC_LSE_ON);
+  /* Wait till LSE is ready */
+  while(RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET)
+  {
+  }
+
+  /* Select the RTC Clock Source */
+  RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE);
+
+  /* Enable the RTC Clock */
+  RCC_RTCCLKCmd(ENABLE);
+
+  /* RTC configuration -------------------------------------------------------*/
+  /* Wait for RTC APB registers synchronisation */
+  RTC_WaitForSynchro();
+
+  /* Set the RTC time base to 1s */
+  RTC_SetPrescaler(32767);  
+  /* Wait until last write operation on RTC registers has finished */
+  RTC_WaitForLastTask();
+
+  /* Enable the RTC Alarm interrupt */
+  RTC_ITConfig(RTC_IT_ALR, ENABLE);
+  /* Wait until last write operation on RTC registers has finished */
+  RTC_WaitForLastTask();
+}
+
+/**
+  * @brief  Configures NVIC and Vector Table base location.
+  * @param  None
+  * @retval None
+  */
+void NVIC_Configuration(void)
+{
+  NVIC_InitTypeDef NVIC_InitStructure;
+
+  /* 2 bits for Preemption Priority and 2 bits for Sub Priority */
+  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
+
+  NVIC_InitStructure.NVIC_IRQChannel = RTCAlarm_IRQn;
+  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
+  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
+  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
+  NVIC_Init(&NVIC_InitStructure);
+}
+
+/**
+  * @brief  Configures the SysTick to generate an interrupt each 1 millisecond.
+  * @param  None
+  * @retval None
+  */
+void SysTick_Configuration(void)
+{
+  /* Setup SysTick Timer for 1 msec interrupts  */
+  if (SysTick_Config(SystemCoreClock / 1000))
+  { 
+    /* Capture error */ 
+    while (1);
+  }
+  /* Set SysTick Priority to 3 */
+  NVIC_SetPriority(SysTick_IRQn, 0x0C);
+}
+
+/**
+  * @brief  Inserts a delay time.
+  * @param  nTime: specifies the delay time length, in milliseconds.
+  * @retval None
+  */
+void Delay(__IO uint32_t nTime)
+{
+  TimingDelay = nTime;
+
+  while(TimingDelay != 0);
+
+}
+
+#ifdef  USE_FULL_ASSERT
+
+/**
+  * @brief  Reports the name of the source file and the source line number
+  *         where the assert_param error has occurred.
+  * @param  file: pointer to the source file name
+  * @param  line: assert_param error line source number
+  * @retval None
+  */
+void assert_failed(uint8_t* file, uint32_t line)
+{ 
+  /* User can add his own implementation to report the file name and line number,
+     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
+
+  /* Infinite loop */
+  while (1)
+  {
+  }
+}
+
+#endif
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/