diff libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/PWR/STANDBY/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
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/PWR/STANDBY/main.c	Mon Oct 03 21:19:15 2011 +1030
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+/**
+  ******************************************************************************
+  * @file    PWR/STANDBY/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_STANDBY
+  * @{
+  */
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+
+/* Private function prototypes -----------------------------------------------*/
+void RTC_Configuration(void);
+void SysTick_Configuration(void);
+
+/* 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_PBInit(BUTTON_KEY, BUTTON_MODE_EXTI);
+
+  /* Turn on LED1 */
+  STM_EVAL_LEDOn(LED1);
+
+  /* Enable PWR and BKP clock */
+  RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);
+
+  /* Enable WKUP pin */
+  PWR_WakeUpPinCmd(ENABLE);
+
+  /* Allow access to BKP Domain */
+  PWR_BackupAccessCmd(ENABLE);
+
+  /* Configure RTC clock source and prescaler */
+  RTC_Configuration();
+
+  /* Configure the SysTick to generate an interrupt each 250 ms */
+  SysTick_Configuration();
+ 
+  while (1)
+  {
+  }
+}
+
+/**
+  * @brief  Configures RTC clock source and prescaler.
+  * @param  None
+  * @retval None
+  */
+void RTC_Configuration(void)
+{
+  /* Check if the StandBy flag is set */
+  if(PWR_GetFlagStatus(PWR_FLAG_SB) != RESET)
+  {/* System resumed from STANDBY mode */
+
+    /* Turn on LED2 */
+    STM_EVAL_LEDOn(LED2);
+
+    /* Clear StandBy flag */
+    PWR_ClearFlag(PWR_FLAG_SB);
+
+    /* Wait for RTC APB registers synchronisation */
+    RTC_WaitForSynchro();
+    /* No need to configure the RTC as the RTC configuration(clock source, enable,
+       prescaler,...) is kept after wake-up from STANDBY */
+  }
+  else
+  {/* StandBy flag is not set */
+
+    /* RTC clock source configuration ----------------------------------------*/
+    /* Reset Backup Domain */
+    BKP_DeInit();
+  
+    /* Enable 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();
+  }
+}
+
+/**
+  * @brief  Configures the SysTick to generate an interrupt each 250 ms.
+  * @param  None
+  * @retval None
+  */
+void SysTick_Configuration(void)
+{
+  /* SysTick interrupt each 250 ms with SysTick Clock equal to (HCLK/8) */
+  if (SysTick_Config((SystemCoreClock/8) / 4))
+  { 
+    /* Capture error */ 
+    while (1);
+  }
+
+  /* Select AHB clock(HCLK) divided by 8 as SysTick clock source */
+  SysTick_CLKSourceConfig(SysTick_CLKSource_HCLK_Div8);
+
+  /* Set SysTick Preemption Priority to 1 */
+  NVIC_SetPriority(SysTick_IRQn, 0x04);
+}
+
+#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****/