STM32L151 Interrupt Problem with HSI

[evilbob]

Posted on April 29, 2015 at 13:58

Hi, I have a problem with RTC alarm interrupt when clocking by HSI. Program just stopped and don't go further. With HSE all work fine, but when I remove external quartz, it stop. Here my code, pls help.

P.S. for clock I use LSE

#include ''stm32l1xx.h''
#define K1 GPIO_SetBits(GPIOC,GPIO_Pin_8)
#define K2 GPIO_SetBits(GPIOC,GPIO_Pin_7)
#define K3 GPIO_SetBits(GPIOC,GPIO_Pin_6)
#define K4 GPIO_SetBits(GPIOB,GPIO_Pin_15)
#define K5 GPIO_SetBits(GPIOB,GPIO_Pin_14)
#define K6 GPIO_SetBits(GPIOB,GPIO_Pin_13)
#define K7 GPIO_SetBits(GPIOB,GPIO_Pin_12)
#define K8 GPIO_SetBits(GPIOB,GPIO_Pin_11)
#define STATUS_LED GPIO_ToggleBits(GPIOC,GPIO_Pin_9);
void RTC_Config(void);
void RTC_TimeRegulate(void);
void init(void);
void sleep(void);
GPIO_InitTypeDef GPIO_InitStructure;
RTC_TimeTypeDef RTC_TimeStructure;
RTC_InitTypeDef RTC_InitStructure;
RTC_AlarmTypeDef RTC_AlarmStructure;
NVIC_InitTypeDef NVIC_InitStructure;
EXTI_InitTypeDef EXTI_InitStructure;
__IO uint32_t AsynchPrediv = 0, SynchPrediv = 0;
uint32_t hour=8,minute=0,second=00;
uint32_t alarm_hour=8,alarm_minute=0,alarm_second=01; 
uint8_t k_led=0;
void RTC_Config(void)
{
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
PWR_RTCAccessCmd(ENABLE);
RCC_LSEConfig(RCC_LSE_ON);
while(RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET)
{
}
RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE); 
RCC_RTCCLKCmd(ENABLE);
RTC_WaitForSynchro();
}
void sleep(void)
{
RTC_AlarmCmd(RTC_Alarm_A, ENABLE); 
PWR_UltraLowPowerCmd(ENABLE);
PWR_EnterSTOPMode(PWR_Regulator_LowPower, PWR_STOPEntry_WFI);
}

void RTC_TimeRegulate(void)
{ 
RTC_TimeStructure.RTC_Hours = hour;
RTC_TimeStructure.RTC_Minutes = minute;
RTC_TimeStructure.RTC_Seconds = second; 
RTC_SetTime(RTC_Format_BIN, &RTC_TimeStructure);
RTC_WriteBackupRegister(RTC_BKP_DR0, 0x32F2);
RTC_AlarmCmd(RTC_Alarm_A, DISABLE);
RTC_AlarmStructure.RTC_AlarmTime.RTC_Hours = alarm_hour;
RTC_AlarmStructure.RTC_AlarmTime.RTC_Minutes = alarm_minute; 
RTC_AlarmStructure.RTC_AlarmTime.RTC_Seconds = alarm_second;
RTC_AlarmStructure.RTC_AlarmDateWeekDay = 0x31;
RTC_AlarmStructure.RTC_AlarmDateWeekDaySel = RTC_AlarmDateWeekDaySel_Date;
RTC_AlarmStructure.RTC_AlarmMask = RTC_AlarmMask_DateWeekDay;
RTC_SetAlarm(RTC_Format_BIN, RTC_Alarm_A, &RTC_AlarmStructure);
}

void RTC_Alarm_IRQHandler (void)
{
RCC_ClearITPendingBit(RCC_IT_CSS);
EXTI_ClearITPendingBit(EXTI_Line17); 
alarm_second++; 
if (alarm_second==60)
{
alarm_second=0;
alarm_minute++;
if (alarm_minute==60)
{ 
alarm_minute=0;
alarm_hour++;
if (alarm_hour==24) alarm_hour=0; 
RTC_AlarmStructure.RTC_AlarmTime.RTC_Hours = alarm_hour; 
} 
RTC_AlarmStructure.RTC_AlarmTime.RTC_Minutes = alarm_minute; 
} 
RTC_AlarmStructure.RTC_AlarmTime.RTC_Seconds = alarm_second;
k_led++;if(k_led==9)k_led=0; 
RTC_AlarmCmd(RTC_Alarm_A, DISABLE); 
RTC_SetAlarm(RTC_Format_BIN, RTC_Alarm_A, &RTC_AlarmStructure); 
RTC_ClearFlag(RTC_FLAG_ALRAF);
RCC_DeInit();
RCC_ClockSecuritySystemCmd(DISABLE);
// RCC_ClearITPendingBit(RCC_IT_CSS);
// RCC_PLLConfig(RCC_PLLSource_HSI,RCC_PLLMul_3,RCC_PLLDiv_2);
RCC_HSICmd(ENABLE);
while (RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET)
{}
RCC_SYSCLKConfig(RCC_SYSCLKSource_HSI);
RCC_HCLKConfig(RCC_SYSCLK_Div2);
// RCC_MSICmd(DISABLE);
// RCC_HSEConfig(RCC_HSE_OFF);
// RTC_Config();
// RCC_HSEConfig(RCC_HSE_ON);
// while (RCC_GetFlagStatus(RCC_FLAG_HSERDY) == RESET)
// {}
switch (k_led){
case (0):
{GPIO_ResetBits(GPIOB,GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15);
GPIO_ResetBits(GPIOC,GPIO_Pin_6|GPIO_Pin_7|GPIO_Pin_8);break;}
case (1): {K1;break;}
case (2): {K2;break;}
case (3): {K3;break;}
case (4): {K4;break;} 
case (5): {K5;break;}
case (6): {K6;break;}
case (7): {K7;break;}
case (8): {K8;break;} 
} 
STATUS_LED;

}

void init(void)
{
RCC_ClearITPendingBit(RCC_IT_CSS); 
RCC_DeInit();
RCC_ClockSecuritySystemCmd(DISABLE);
// RCC_PLLConfig(RCC_PLLSource_HSI,RCC_PLLMul_3,RCC_PLLDiv_2);
RCC_HSICmd(ENABLE);
while (RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET)
{} 
RCC_SYSCLKConfig(RCC_SYSCLKSource_HSI);
RCC_HCLKConfig(RCC_SYSCLK_Div2); 
// RCC_MSICmd(DISABLE);
// RCC_HSEConfig(RCC_HSE_OFF);
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB|RCC_AHBPeriph_GPIOC, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_40MHz;
GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10|GPIO_Pin_11|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_40MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure); 
GPIO_SetBits(GPIOC,GPIO_Pin_9);
EXTI_DeInit();
PWR_RTCAccessCmd(ENABLE);
RTC_WaitForSynchro();
RTC_ClearFlag(RTC_FLAG_ALRAF);
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);
NVIC_InitStructure.NVIC_IRQChannel = RTC_Alarm_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure); 
RTC_ITConfig(RTC_IT_ALRA, ENABLE);
if (RTC_ReadBackupRegister(RTC_BKP_DR0) != 0x32F2)
{ 
RTC_Config();
RTC_InitStructure.RTC_AsynchPrediv = AsynchPrediv;
RTC_InitStructure.RTC_SynchPrediv = SynchPrediv;
RTC_InitStructure.RTC_HourFormat = RTC_HourFormat_24; 
}
RTC_TimeRegulate();
}

int main(void)
{
// uint32_t i=0;
init();
while(1)
{
sleep();
// STATUS_LED;
// for(i=0;i<0xFFFF;i++);
}
}

#rtc #interrupt #hsi #stm32l151

[evilbob]

Posted on May 19, 2015 at 09:15

Anyone can

help

?