Пример работы с таймером. может пригодится кому-то.
CODE
/*------------------------------------------------------------------------------
File Name : rtc.h
Author :
Version : 1.1
Date : 17/12/2013
Description : contens functions for work rtc timer stm32f103xx
--------------------------------------------------------------------------------*/
#include "stm32F10x.h"
#include "stm32f10x_rtc.h"
#include "misc.h"
#include "string.h"
#include "stdlib.h"
#include "stdio.h"
#include "time.h"
#include "glb_def.h"
#include "ublox530m_gps.h"
#include "rtc.h"
/*------------------------------------------------------------------------------
| RTC |
------------------------------------------------------------------------------*/
/* Extern variables ----------------------------------------------------------*/
extern FlagEvent_t flag_event;
/* Private variables ---------------------------------------------------------*/
static uint32_t cnt_wait;
static struct tm caltime; /* from time.h*/
__IO static time_t counter;
/* Private function declaration ----------------------------------------------*/
static void Rtc_counter_to_struct(struct tm *caltime);
static time_t Rtc_struct_to_counter(struct tm *caltime);
/**---------------------------------------------------------------------------
* @brief RTC_IRQHandler
* @param none
* @retval none
*---------------------------------------------------------------------------
*/
void RTC_IRQHandler (void) {
uint32_t current_cnt;
if (RTC_GetITStatus(RTC_IT_SEC) == SET) {
RTC_ClearITPendingBit(RTC_IT_SEC);
/*Waits until last write operation
on RTC registers has finished */
RTC_WaitForLastTask();
current_cnt = RTC_GetCounter();
if (current_cnt > cnt_wait) {
/*Waits until last write operation
on RTC registers has finished */
RTC_WaitForLastTask();
/* disable interrupt*/
RTC_ITConfig(RTC_IT_SEC, DISABLE);
/* wait elapsed */
flag_event.WaitElapsed = 1;
}
}
}
/**---------------------------------------------------------------------------
* @brief Init rtc timer stm32f103xx for work
* @param none
* @retval none
*---------------------------------------------------------------------------
*/
void Rtc_Init (void)
{
NVIC_InitTypeDef NVIC_InitStruct;
//enable clock power supply module and buckup domain
RCC->APB1ENR |= RCC_APB1ENR_PWREN | RCC_APB1ENR_BKPEN;
//enable common access
PWR->CR |= PWR_CR_DBP;
RCC->BDCR |= RCC_BDCR_BDRST;
RCC->BDCR &= ~RCC_BDCR_BDRST;
RCC->BDCR |= RCC_BDCR_RTCEN | RCC_BDCR_RTCSEL_LSE;
//Enters the RTC configuration mode
RTC->CRL |= RTC_CRL_CNF;
//clock from external quartz
RTC->PRLL = 0x7FFF;
//Exits from the RTC configuration mode
RTC->CRL &= ~RTC_CRL_CNF;
//setup bit enable work LSE and wait ready LSE
RCC->BDCR |= RCC_BDCR_LSEON;
while ((RCC->BDCR & RCC_BDCR_LSEON) != RCC_BDCR_LSEON){}
RTC_WaitForSynchro();
//Setup NVIC for RTC
NVIC_InitStruct.NVIC_IRQChannel = RTC_IRQn;
NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 0x0F;
NVIC_InitStruct.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStruct);
}
/**---------------------------------------------------------------------------
* @brief Start wait mode
* @param
* @output
* @retval none
*---------------------------------------------------------------------------
*/
void Rtc_StartWait (DataTimeCmd_t *SETime)
{
struct tm t1, t2;
uint32_t dt;
t1.tm_hour = SETime->StartWaitTime.hour;
t1.tm_isdst = 0;
t1.tm_mday = SETime->StartWaitTime.mday;
t1.tm_min = SETime->StartWaitTime.min;
t1.tm_mon = SETime->StartWaitTime.month-1;
t1.tm_sec = SETime->StartWaitTime.sec;
t1.tm_year = SETime->StartWaitTime.year - 1900;
counter = Rtc_struct_to_counter(&t1);
/*Waits until last write operation
on RTC registers has finished */
RTC_WaitForLastTask();
Rtc_SetCounter(counter);
/**/
t2.tm_hour = SETime->EndWaitTime.hour;
t2.tm_isdst = 0;
t2.tm_mday = SETime->EndWaitTime.mday;
t2.tm_min = SETime->EndWaitTime.min;
t2.tm_mon = SETime->EndWaitTime.month-1;
t2.tm_sec = SETime->EndWaitTime.sec;
t2.tm_year = SETime->EndWaitTime.year - 1900;
/**/
dt = mktime(&t2) - mktime(&t1);
/*Waits until last write operation
on RTC registers has finished */
RTC_WaitForLastTask();
cnt_wait = RTC_GetCounter() + dt;//wmin*60;
//Enable second interrupt
RTC_ITConfig(RTC_IT_SEC, ENABLE);
}
/**---------------------------------------------------------------------------
* @brief populates time-struct based on counter-value
* @param caltime - pointer to time-struct tm (from time.h)
* @output time-struct tm fills
* @retval none
*---------------------------------------------------------------------------
*/
static void Rtc_counter_to_struct (struct tm *caltime)
{
struct tm *ct;
counter = RTC_GetCounter();
ct = localtime((const time_t*)&counter);
memcpy((void*)caltime, (void*)ct, sizeof(struct tm));
}
/**---------------------------------------------------------------------------
* @brief calculates second-counter from populated time-struct tm
* @param caltime - pointer to time-struct tm (from time.h)
* @output none
* @retval counter-value (unit seconds) time_t type
*---------------------------------------------------------------------------
*/
static time_t Rtc_struct_to_counter (struct tm *caltime)
{
counter = mktime(caltime);
return counter;
}
/**---------------------------------------------------------------------------
* @brief populates time-struct RTC_t type from struct tm type
* @param rtc - pointer to RTC_t struct
* @output time-struct gets modified
* @retval none
*---------------------------------------------------------------------------
*/
void Rtc_Gettime (DataTime_t *rtc)
{
Rtc_counter_to_struct(&caltime);
rtc->hour = caltime.tm_hour;
rtc->mday = caltime.tm_mday;
rtc->min = caltime.tm_min;
rtc->month = caltime.tm_mon+1;
rtc->sec = caltime.tm_sec;
rtc->wday = caltime.tm_wday;
rtc->year = caltime.tm_year + 1900;
}
/**---------------------------------------------------------------------------
* @brief sets the hardware-counter
* @param new counter-value
* @output none
* @retval none
*---------------------------------------------------------------------------
*/
void Rtc_SetCounter (uint32_t cnt)
{
/* Change the current time */
RTC->CRL |= RTC_CRL_CNF;
RTC->CNTH = cnt>>16;
RTC->CNTL = cnt;
RTC->CRL &= ~RTC_CRL_CNF;
}
/**---------------------------------------------------------------------------
* @brief populates time-struct tm type from time-struct RTC_t type
* @param none
* @output caltime - global time-struct tm type
* counter - global sec counter
* sets the hardware-counter
* @retval none
*---------------------------------------------------------------------------
*/
void Rtc_Settime (DataTime_t *rtc)
{
caltime.tm_hour = rtc->hour;
caltime.tm_isdst = 0;
caltime.tm_mday = rtc->mday;
caltime.tm_min = rtc->min;
caltime.tm_mon = rtc->month-1;
caltime.tm_sec = rtc->sec;
caltime.tm_year = rtc->year - 1900;
/*Waits until last write operation
on RTC registers has finished */
RTC_WaitForLastTask();
counter = Rtc_struct_to_counter(&caltime);
Rtc_SetCounter(counter);
}
/**---------------------------------------------------------------------------
* @brief Get UTC data and time
* @param data - pointer on struct GPSDATA_t: 'dd,mm,yyyy'
* time - pointer on struct GPSTIME_t: 'hhmmss.ddd'
* @output populates time-struct GPSDATA_t and GPSTIME_t
* @retval none
*---------------------------------------------------------------------------
*/
void Rtc_GetUtcDateTime (GPSDATA_t *data, GPSTIME_t *time) {
DataTime_t rtc;
Rtc_Gettime(&rtc);
data->date_str[0] = rtc.mday/10 + 0x30;
data->date_str[1] = rtc.mday%10 + 0x30;
data->date_str[2] = ',';
data->date_str[3] = rtc.month/10 + 0x30;
data->date_str[4] = rtc.month%10 + 0x30;
data->date_str[5] = ',';
data->date_str[6] = rtc.year/1000 + 0x30;
data->date_str[7] = (rtc.year%1000)/100 + 0x30;
data->date_str[8] = (rtc.year%100)/10 + 0x30;
data->date_str[9] = rtc.year%10 + 0x30;
//
time->time_str[0] = rtc.hour/10 + 0x30;
time->time_str[1] = rtc.hour%10 + 0x30;
time->time_str[2] = rtc.min/10 + 0x30;
time->time_str[3] = rtc.min%10 + 0x30;
time->time_str[4] = rtc.sec/10 + 0x30;
time->time_str[5] = rtc.sec%10 + 0x30;
time->time_str[6] = '.';
time->time_str[7] = '0';
time->time_str[8] = '0';
time->time_str[9] = '0';
}
/**---------------------------------------------------------------------------
* @brief Get UTC data and time
* @param rtc - pointer on struct RTC_t
* ttime_str - pointer on struct RtcDataTime_t: 'dd,mm,yyyyhhmmss.ddd'
* @output populates time-struct RtcDataTime_t
* @retval none
*---------------------------------------------------------------------------
*/
void Rtc_ConvertToStr(DataTime_t *rtc, StrDataTime_t *time_str)
{
time_str->Data.date_str[0] = rtc->mday/10 + 0x30;
time_str->Data.date_str[1] = rtc->mday%10 + 0x30;
time_str->Data.date_str[2] = ',';
time_str->Data.date_str[3] = rtc->month/10 + 0x30;
time_str->Data.date_str[4] = rtc->month%10 + 0x30;
time_str->Data.date_str[5] = ',';
time_str->Data.date_str[6] = rtc->year/1000 + 0x30;
time_str->Data.date_str[7] = (rtc->year%1000)/100 + 0x30;
time_str->Data.date_str[8] = (rtc->year%100)/10 + 0x30;
time_str->Data.date_str[9] = rtc->year%10 + 0x30;
//
time_str->Time.time_str[0] = rtc->hour/10 + 0x30;
time_str->Time.time_str[1] = rtc->hour%10 + 0x30;
time_str->Time.time_str[2] = rtc->min/10 + 0x30;
time_str->Time.time_str[3] = rtc->min%10 + 0x30;
time_str->Time.time_str[4] = rtc->sec/10 + 0x30;
time_str->Time.time_str[5] = rtc->sec%10 + 0x30;
time_str->Time.time_str[6] = '.';
time_str->Time.time_str[7] = '0';
time_str->Time.time_str[8] = '0';
time_str->Time.time_str[9] = '0';
}
/*----------------------------END OF FILE-------------------------------------*/
Сообщение отредактировал IgorKossak - Apr 22 2014, 07:29
Причина редактирования: [codebox] для длинного кода, [code] - для короткого!!!
Часы на STM32, Проблема с часами на STM32/
Nov 20 2010, 09:58
