Mercurial > ~darius > hgwebdir.cgi > stm32temp
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> |
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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 @@ -0,0 +1,191 @@ +/** + ****************************************************************************** + * @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>© 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****/