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Diffstat (limited to 'src/stm32lib/examples/PWR/STOP/main.c')
| -rwxr-xr-x | src/stm32lib/examples/PWR/STOP/main.c | 391 |
1 files changed, 391 insertions, 0 deletions
diff --git a/src/stm32lib/examples/PWR/STOP/main.c b/src/stm32lib/examples/PWR/STOP/main.c new file mode 100755 index 0000000..48e715e --- /dev/null +++ b/src/stm32lib/examples/PWR/STOP/main.c @@ -0,0 +1,391 @@ +/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************
+* File Name : main.c
+* Author : MCD Application Team
+* Version : V2.0.1
+* Date : 06/13/2008
+* Description : Main program body.
+********************************************************************************
+* 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.
+*******************************************************************************/
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f10x_lib.h"
+#include "platform_config.h"
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+extern vu32 TimingDelay;
+ErrorStatus HSEStartUpStatus;
+
+/* Private function prototypes -----------------------------------------------*/
+void SYSCLKConfig_STOP(void);
+void RCC_Configuration(void);
+void GPIO_Configuration(void);
+void EXTI_Configuration(void);
+void RTC_Configuration(void);
+void NVIC_Configuration(void);
+void SysTick_Configuration(void);
+void Delay(vu32 nTime);
+
+/* Private functions ---------------------------------------------------------*/
+/*******************************************************************************
+* Function Name : main
+* Description : Main program.
+* Input : None
+* Output : None
+* Return : None
+*******************************************************************************/
+int main(void)
+{
+#ifdef DEBUG
+ debug();
+#endif
+
+ /* Clock configuration */
+ RCC_Configuration();
+
+ /* Enable PWR and BKP clock */
+ RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);
+
+ /* GPIO configuration */
+ GPIO_Configuration();
+
+ /* 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 led connected to GPIO_LED Pin6 */
+ GPIO_SetBits(GPIO_LED, GPIO_Pin_6);
+
+ 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 led connected to GPIO_LED Pin6 */
+ GPIO_ResetBits(GPIO_LED, GPIO_Pin_6);
+
+ /* 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 led connected to GPIO_LED Pin6 */
+ GPIO_SetBits(GPIO_LED, GPIO_Pin_6);
+
+ /* 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();
+ }
+}
+
+/*******************************************************************************
+* Function Name : RCC_Configuration
+* Description : Configures the different system clocks.
+* Input : None
+* Output : None
+* Return : None
+*******************************************************************************/
+void RCC_Configuration(void)
+{
+ /* SYSCLK, HCLK, PCLK2 and PCLK1 configuration -----------------------------*/
+ /* RCC system reset(for debug purpose) */
+ RCC_DeInit();
+
+ /* Enable HSE */
+ RCC_HSEConfig(RCC_HSE_ON);
+
+ /* Wait till HSE is ready */
+ HSEStartUpStatus = RCC_WaitForHSEStartUp();
+
+ if(HSEStartUpStatus == SUCCESS)
+ {
+ /* Enable Prefetch Buffer */
+ FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
+
+ /* Flash 2 wait state */
+ FLASH_SetLatency(FLASH_Latency_2);
+
+ /* HCLK = SYSCLK */
+ RCC_HCLKConfig(RCC_SYSCLK_Div1);
+
+ /* PCLK2 = HCLK */
+ RCC_PCLK2Config(RCC_HCLK_Div1);
+
+ /* PCLK1 = HCLK/2 */
+ RCC_PCLK1Config(RCC_HCLK_Div2);
+
+ /* PLLCLK = 8MHz * 9 = 72 MHz */
+ RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);
+
+ /* 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)
+ {
+ }
+ }
+}
+
+/*******************************************************************************
+* Function Name : SYSCLKConfig_STOP
+* Description : Configures system clock after wake-up from STOP: enable HSE, PLL
+* and select PLL as system clock source.
+* Input : None
+* Output : None
+* Return : None
+*******************************************************************************/
+void SYSCLKConfig_STOP(void)
+{
+ /* Enable HSE */
+ RCC_HSEConfig(RCC_HSE_ON);
+
+ /* Wait till HSE is ready */
+ HSEStartUpStatus = RCC_WaitForHSEStartUp();
+
+ if(HSEStartUpStatus == SUCCESS)
+ {
+ /* 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)
+ {
+ }
+ }
+}
+
+/*******************************************************************************
+* Function Name : GPIO_Configuration
+* Description : Configures the different GPIO ports.
+* Input : None
+* Output : None
+* Return : None
+*******************************************************************************/
+void GPIO_Configuration(void)
+{
+ GPIO_InitTypeDef GPIO_InitStructure;
+
+ /* Enable Key Button GPIO Port, GPIO_LED and AFIO clock */
+ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIO_KEY_BUTTON | RCC_APB2Periph_GPIO_LED
+ | RCC_APB2Periph_AFIO, ENABLE);
+
+ /* Configure GPIO_LED Pin 6, Pin 7 and Pin 8 as Output push-pull */
+ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7 | GPIO_Pin_8;
+ GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
+ GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
+ GPIO_Init(GPIO_LED, &GPIO_InitStructure);
+
+ /* Configure Key Button GPIO Pin as input floating */
+ GPIO_InitStructure.GPIO_Pin = GPIO_PIN_KEY_BUTTON;
+ GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
+ GPIO_Init(GPIO_KEY_BUTTON, &GPIO_InitStructure);
+}
+
+/*******************************************************************************
+* Function Name : EXTI_Configuration
+* Description : Configures EXTI Lines.
+* Input : None
+* Output : None
+* Return : None
+*******************************************************************************/
+void EXTI_Configuration(void)
+{
+ EXTI_InitTypeDef EXTI_InitStructure;
+
+ /* Connect Key Button EXTI Line to Key Button GPIO Pin */
+ GPIO_EXTILineConfig(GPIO_PORT_SOURCE_KEY_BUTTON, GPIO_PIN_SOURCE_KEY_BUTTON);
+
+ /* Configure Key Button EXTI Line to generate an interrupt on falling edge */
+ EXTI_InitStructure.EXTI_Line = EXTI_LINE_KEY_BUTTON;
+ EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
+ EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
+ EXTI_InitStructure.EXTI_LineCmd = ENABLE;
+ EXTI_Init(&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_Trigger = EXTI_Trigger_Rising;
+ EXTI_Init(&EXTI_InitStructure);
+}
+
+/*******************************************************************************
+* Function Name : RTC_Configuration
+* Description : Configures RTC clock source and prescaler.
+* Input : None
+* Output : None
+* Return : 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();
+}
+
+/*******************************************************************************
+* Function Name : NVIC_Configuration
+* Description : Configures NVIC and Vector Table base location.
+* Input : None
+* Output : None
+* Return : None
+*******************************************************************************/
+void NVIC_Configuration(void)
+{
+ NVIC_InitTypeDef NVIC_InitStructure;
+
+ /* Set the Vector Table base location at 0x08000000 */
+ NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
+
+ /* 2 bits for Preemption Priority and 2 bits for Sub Priority */
+ NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
+
+ NVIC_InitStructure.NVIC_IRQChannel = RTCAlarm_IRQChannel;
+ NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
+ NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
+ NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
+ NVIC_Init(&NVIC_InitStructure);
+
+ NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQChannel;
+ NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
+ NVIC_Init(&NVIC_InitStructure);
+}
+
+/*******************************************************************************
+* Function Name : SysTick_Configuration
+* Description : Configures the SysTick to generate an interrupt each 1 millisecond.
+* Input : None
+* Output : None
+* Return : None
+*******************************************************************************/
+void SysTick_Configuration(void)
+{
+ /* Select AHB clock(HCLK) as SysTick clock source */
+ SysTick_CLKSourceConfig(SysTick_CLKSource_HCLK);
+
+ /* Set SysTick Priority to 3 */
+ NVIC_SystemHandlerPriorityConfig(SystemHandler_SysTick, 3, 0);
+
+ /* SysTick interrupt each 1ms with HCLK equal to 72MHz */
+ SysTick_SetReload(72000);
+
+ /* Enable the SysTick Interrupt */
+ SysTick_ITConfig(ENABLE);
+}
+
+/*******************************************************************************
+* Function Name : Delay
+* Description : Inserts a delay time.
+* Input : nTime: specifies the delay time length, in milliseconds.
+* Output : None
+* Return : None
+*******************************************************************************/
+void Delay(u32 nTime)
+{
+ /* Enable the SysTick Counter */
+ SysTick_CounterCmd(SysTick_Counter_Enable);
+
+ TimingDelay = nTime;
+
+ while(TimingDelay != 0);
+
+ /* Disable the SysTick Counter */
+ SysTick_CounterCmd(SysTick_Counter_Disable);
+ /* Clear the SysTick Counter */
+ SysTick_CounterCmd(SysTick_Counter_Clear);
+}
+
+#ifdef DEBUG
+/*******************************************************************************
+* Function Name : assert_failed
+* Description : Reports the name of the source file and the source line number
+* where the assert_param error has occurred.
+* Input : - file: pointer to the source file name
+* - line: assert_param error line source number
+* Output : None
+* Return : None
+*******************************************************************************/
+void assert_failed(u8* file, u32 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 2008 STMicroelectronics *****END OF FILE****/
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