/******************** (C) COPYRIGHT 2007 STMicroelectronics ********************
* File Name : main.c
* Author : embest
* Date First Issued : 08/30/2007
* Description : Main program body.
********************************************************************************
* History:
08/30/2007:vers.1.1
********************************************************************************
* THE PRESENT SOFTWARE 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 SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*******************************************************************************/
/* Includes ------------------------------------------------------------------*/
#include "stm32f10x_lib.h"
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define LAB6_WFI
//#define LAB6_WFE
//#define LAB6_RTC
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
extern vu32 TimingDelay;
/* Private function prototypes -----------------------------------------------*/
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);
/*******************************************************************************
* Function Name : SysTickHandler
* Description : This function handles SysTick Handler.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void SysTickHandler(void)
{
TimingDelay--;
if(GPIOB->ODR & GPIO_Pin_9)
GPIOB->BRR= GPIO_Pin_9;
else
GPIOB->BSRR= GPIO_Pin_9;
}
/* 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 Line9 to generate an interrupt on falling edge */
EXTI_Configuration();
#ifdef LAB6_RTC
/* Configure RTC clock source and prescaler */
RTC_Configuration();
#endif /* LAB6_RTC */
/* NVIC configuration */
NVIC_Configuration();
/* Configure the SysTick to generate an interrupt each 1 millisecond */
SysTick_Configuration();
/* Turn on led connected to PC.06 and PC.08*/
GPIO_WriteBit(GPIOB, GPIO_Pin_8, Bit_SET);
GPIO_WriteBit(GPIOB, GPIO_Pin_10, Bit_SET);
Delay(300000);
SysTick_CounterCmd(SysTick_Counter_Enable);
#ifdef LAB6_WFI
GPIO_WriteBit(GPIOB, GPIO_Pin_9, Bit_RESET);
/* Request to enter STOP mode with regulator ON */
PWR_EnterSTOPMode(PWR_Regulator_ON, PWR_STOPEntry_WFI);
#endif //LAB6_WFI
while(1)
{
/* Insert 2 second delay */
//Delay(300000);
#ifdef LAB6_RTC
/* Alarm in 2 second */
RTC_SetAlarm(RTC_GetCounter()+ 2);
/* Wait until last write operation on RTC registers has finished */
RTC_WaitForLastTask();
#endif // LAB6_RTC
/* Turn off led connected to PC.06 and PC.08 */
GPIO_WriteBit(GPIOB, GPIO_Pin_8, Bit_RESET);
GPIO_WriteBit(GPIOB, GPIO_Pin_10, Bit_RESET);
#ifdef LAB6_WFE
/* Request to enter STOP mode with regulator ON */
PWR_EnterSTOPMode(PWR_Regulator_ON, PWR_STOPEntry_WFE);
#endif //LAB6_WFE
#ifdef LAB6_RTC
/* Request to enter STOP mode with regulator ON */
PWR_EnterSTOPMode(PWR_Regulator_ON, PWR_STOPEntry_WFI);
#endif //LAB6_RTC
RCC_Configuration();
/* At this stage the system has resumed from STOP mode -------------------*/
/* Turn on led connected to PC.06 and PC.09 */
while(1)
{
GPIO_WriteBit(GPIOB, GPIO_Pin_8, Bit_SET);
Delay(100000);
GPIO_WriteBit(GPIOB, GPIO_Pin_8, Bit_RESET);
Delay(100000);
}
/* Enable and select HSE as system clock source, as HSE is disabled in STOP mode */
}
}
/*******************************************************************************
* Function Name : RCC_Configuration
* Description : Configures the different system clocks.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void RCC_Configuration(void)
{
/* Enable HSE */
RCC_HSEConfig(RCC_HSE_ON);
/* Wait till HSE is ready */
while(RCC_GetFlagStatus(RCC_FLAG_HSERDY) == RESET)
{
}
/* Select HSE as SYSCLK clock source (SYSCLK = HCLK = PCLK1 = PCLK2) */
RCC_SYSCLKConfig(RCC_SYSCLKSource_HSE);
/* Wait till HSE is used as system clock source */
while(RCC_GetSYSCLKSource() != 0x04)
{
}
}
/*******************************************************************************
* 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 peripherals clocks */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOB |
RCC_APB2Periph_AFIO, ENABLE);
/* Configure PC.06, PC.07, PC.08 and PC.09 as Output push-pull */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIOB->ODR=GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11;
/* Configure PB9 in the correct mode */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;
GPIO_InitStructure.GPIO_Mode =GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOC, &GPIO_InitStructure);
}
/*******************************************************************************
* Function Name : EXTI_Configuration
* Description : Configures EXTI Line9 and Line17(RTC Alarm).
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void EXTI_Configuration(void)
{
EXTI_InitTypeDef EXTI_InitStructure;
GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource13);
/* Configure EXTI to generate an interrupt on falling edge */
EXTI_ClearITPendingBit(EXTI_Line9);
EXTI_InitStructure.EXTI_Line = EXTI_Line9;
#ifdef LAB26_WFI
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
#endif //LAB6_WFI
#ifdef LAB6_WFE
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Event;
#endif //LAB6_WFE
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
#ifdef LAB6_RTC
/* Configure EXTI (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);
#endif //LAB6_RTC
}
/*******************************************************************************
* Function Name : RTC_Configuration
* Description : Configures RTC clock source and prescaler.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void RTC_Configuration(void)
{
#ifdef LAB6_RTC
/* RTC clock source configuration ------------------------------------------*/
/* Allow access to BKP Domain */
PWR_BackupAccessCmd(ENABLE);
/* Reset Backup Domain */
BKP_DeInit();
/* Enable the RTC Clock */
RCC_RTCCLKCmd(ENABLE);
/* Wait till RTC clock 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();
#endif //LAB6_RTC
}
/*******************************************************************************
* 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;
#ifdef VECT_TAB_RAM
/* Set the Vector Table base location at 0x20000000 */
NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);
#else /* VECT_TAB_FLASH */
/* Set the Vector Table base location at 0x08000000 */
NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
#endif
/* 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 8MHz */
SysTick_SetReload(4000000);
/* 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)
TimingDelay--;
/* 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 error has occurred.
* Input : - file: pointer to the source file name
* - line: assert 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
", file, line) */
/* Infinite loop */
while (1)
{
}
}
#endif
/******************* (C) COPYRIGHT 2007 STMicroelectronics *****END OF FILE****/
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