286 lines
7.7 KiB
C
286 lines
7.7 KiB
C
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#include "drv_rtc.h"
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#include "drv_clk.h"
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#include "bsp_task.h"
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#include "kit_time.h"
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#include "kit_data.h"
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#include "kit_debug.h"
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#define LSE_NOT_READY 0
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#define RCC_BDCR_RTCEN_POS KIT_CREAT_BIT(15)
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#define RCC_BDCR_LSEDY_POS ((uint32_t)0x00000002)
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#define RCC_BDCR_LSEON_POS KIT_CREAT_BIT(0)
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#define RCC_RTCCLKSource_LSE KIT_CREAT_BIT(8)
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#define RTC_FLAG_RTOFF ((uint16_t)0x0020) /*!< RTC Operation OFF flag */
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/******************************************************************************************
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1.写RTC寄存器前必须使能PWR_CR中的DBP,且必须等待操作完成才能清0 DBP
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2.stm32f10x RTC 进行写操作前必须判断上一次操作是否完成(RTOFF)
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3.写RTC_CNT、RTC_ALR或RTC_PRL寄存器时必须先置位CNF，写完后必须清0才会执行写操作
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4.读RTC_CNT、RTC_ALR或RTC_PRL寄存器时前必须清0RSF，等其被硬件置位时表示同步完成，可以读取
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5.低速时钟起振时间1-5s
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******************************************************************************************/
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#define RTC_INIT_MASK ((uint32_t)0xFFFFFFFF)
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bool drv_rtc_enable_init_mode(void)
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{
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uint32_t dly = 0;
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// //对RTC寄存器操作前先要使能备份区
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// PWR->CR |= PWR_CR_DBP;
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//关闭RTC寄存器写保护
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RTC->WPR = 0xCA;
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RTC->WPR = 0x53;
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//进入RTC初始化模式
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if((RTC->ISR &= RTC_ISR_INITF) == 0)
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{
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RTC->ISR = RTC_INIT_MASK;
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//等待进入RTC初始化模式成功
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while(((RTC->ISR & RTC_ISR_INITF) == 0x00) && (dly++ < 100))
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{
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bsp_task_delay_ms(1);
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}
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}
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return (dly < 100);
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}
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void drv_rtc_disable_init_mode(void)
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{
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RTC->ISR &= ~RTC_ISR_INIT; //退出RTC初始化模式
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RTC->WPR = 0xFF; //使能RTC寄存器写保护
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}
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//由于低速时钟起振较慢，其他任务初始化后再初始化RTC
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bool drv_rtc_init(void)
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{
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bool res = false;
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uint32_t dly = 0;
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//if((RCC->BDCR & RCC_BDCR_RTCEN_POS) != RCC_BDCR_RTCEN_POS)
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{
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KIT_DEBUG_PRINTF("rtc init\r\n");
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RCC->APB1ENR |= RCC_APB1Periph_PWR;
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//使能允许写入RTC和后备寄存器
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PWR->CR |= PWR_CR_DBP;
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//开启LSE
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RCC->BDCR |= RCC_BDCR_LSEON_POS;
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while((RCC->BDCR & RCC_BDCR_LSEDY_POS) == LSE_NOT_READY)
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{
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bsp_task_delay_ms(10);
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if(dly++ > 500)
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{
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KIT_DEBUG_PRINTF("rtc fail \r\n");
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return res;
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}
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}
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KIT_DEBUG_PRINTF("rtc dly %d\r\n", dly);
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RCC->BDCR |= (RCC_RTCCLKSource_LSE | RCC_BDCR_RTCEN_POS);
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//RTC配置使用默认配置
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//设置同步分频系数和异步分频系数，默认为1Hz = 32768/(同步分频 + 1)/(异步分频 + 1)
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res = drv_rtc_enable_init_mode();
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if(res == true)
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{
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RTC->PRER = 0x001F03FF;
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}
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drv_rtc_disable_init_mode();
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//PWR->CR &= ~PWR_CR_DBP_POS;
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}
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return res;
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}
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//ampm:AM/PM,0=AM/24H,1=PM.
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bool drv_rtc_set_time(uint8_t hour, uint8_t min, uint8_t sec)
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{
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bool res;
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//关闭RTC寄存器写保护
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res = drv_rtc_enable_init_mode();
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if(res == true)
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{
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RTC->TR = ((uint32_t)kit_dec_to_bcd(hour) << 16) | ((uint32_t)kit_dec_to_bcd(min) << 8) | (kit_dec_to_bcd(sec));
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}
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drv_rtc_disable_init_mode();
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return res;
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}
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//year 20xx, month 1-12, day 1-31
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bool drv_rtc_set_date(uint16_t year, uint8_t month, uint8_t day)
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{
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bool res;
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//关闭RTC寄存器写保护
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res = drv_rtc_enable_init_mode();
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if((res == true) && (year >= 2000))
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{
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RTC->DR = ((uint32_t)kit_dec_to_bcd(year - 2000) << 16) | ((uint32_t)kit_dec_to_bcd(month) << 8) | (kit_dec_to_bcd(day));
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}
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drv_rtc_disable_init_mode();
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return res;
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}
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//Tan 20230911 减少retry次数，防止阻塞
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bool drv_rtc_wait_sync(void)
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{
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bool res = true;
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int32_t retry = 0;
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//关闭RTC寄存器写保护
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RTC->WPR = 0xCA;
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RTC->WPR = 0x53;
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RTC->ISR &= ~(1 << 5); //清除RSF位
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while((retry++ < 0XFFFFF) && ((RTC->ISR & (1 << 5)) == 0x00)) //等待影子寄存器同步
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{}
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if(retry >= 0XFFFFF)
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{
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res = false;
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}
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RTC->WPR = 0xFF; //使能RTC寄存器写保护
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return res;
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}
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bool drv_rtc_get_time(int32_t *hour, int32_t *min, int32_t *sec)
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{
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uint32_t temp = 0;
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if(drv_rtc_wait_sync() == true)
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{
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temp = RTC->TR;
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*hour = kit_dcb_to_dec((temp >> 16) & 0x3F);
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*min = kit_dcb_to_dec((temp >> 8) & 0x7F);
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*sec = kit_dcb_to_dec(temp & 0x7F);
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return true;
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}
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else
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{
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*hour = *min = *sec = 0;
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return false;
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}
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}
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//year 20xx, month 1-12, day 1-31
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bool drv_rtc_get_date(int32_t *year, int32_t *month, int32_t *day)
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{
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uint32_t temp = 0;
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if(drv_rtc_wait_sync() == true)
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{
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temp = RTC->DR;
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*year = kit_dcb_to_dec((temp >> 16) & 0xFF) + 2000;
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*month = kit_dcb_to_dec((temp >> 8) & 0x1F);
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*day = kit_dcb_to_dec(temp & 0x3F);
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return true;
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}
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else
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{
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*year = 2000;
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*month = *day = 1;
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return false;
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}
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}
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uint32_t drv_rtc_get_tick(void)
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{
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struct tm tmp;
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uint32_t res = 0;
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tmp.tm_year = 0;
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if((drv_rtc_get_time(&tmp.tm_hour, &tmp.tm_min, &tmp.tm_sec) == true)
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&& (drv_rtc_get_date(&tmp.tm_year, &tmp.tm_mon, &tmp.tm_mday) == true))
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{
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tmp.tm_mon--;
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tmp.tm_year = (tmp.tm_year > 2018) ? (tmp.tm_year - 1900) : 119;
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res = kit_time_get_stamp(2019, &tmp);
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}
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return res;
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}
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bool drv_rtc_set_tick(uint32_t tick)
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{
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struct tm *tmp;
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bool res = false;
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if(drv_rtc_get_tick() != tick)
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{
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tmp = kit_time_get_date(2019, tick);
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//标准库月0-11 ST月为1-12，ST年从2000开始只保留十位和各位
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if((tmp->tm_year >= 119) && (drv_rtc_set_time(tmp->tm_hour, tmp->tm_min, tmp->tm_sec) == true)
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&& (drv_rtc_set_date((tmp->tm_year + 1900), tmp->tm_mon + 1, tmp->tm_mday) == true))
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{
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res = true;
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}
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}
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else
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{
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res = true;
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}
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return res;
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}
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uint16_t drv_rtc_get_ms(void)
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{
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uint32_t tmp = 0;
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/* Get sub seconds values from the correspondent registers*/
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tmp = (uint32_t)(RTC->SSR);
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/* Read DR register to unfroze calendar registers */
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(void)(RTC->DR);
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tmp = (0x03FF - tmp) * 1000 / (0x03FF + 1);
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return tmp;
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}
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bool drv_rtc_set_ms(uint16_t ms)
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{
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bool res = false;
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uint32_t cur_ms, cnt = 0;
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/* Disable the write protection for RTC registers */
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RTC->WPR = 0xCA;
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RTC->WPR = 0x53;
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cur_ms = drv_rtc_get_ms();
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if(ms != cur_ms)
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{
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RTC->WPR = 0xCA;
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RTC->WPR = 0x53;
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/* Check if a Shift is pending*/
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while(((RTC->ISR & RTC_ISR_SHPF) != RESET) && (cnt++ < 1000));
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/* Check if the Shift pending is completed or if there is no Shift operation at all*/
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if((RTC->ISR & RTC_ISR_SHPF) == RESET)
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{
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/* check if the reference clock detection is disabled */
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if((RTC->CR & RTC_CR_REFCKON) == RESET)
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{
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if(cur_ms > ms)
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{
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cur_ms = (cur_ms - ms) * (0x3FF + 1) / 1000;
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}
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else
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{
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cur_ms = (1000 - ms + cur_ms) * (0x3FF + 1) / 1000;
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}
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RTC->SHIFTR = cur_ms;
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res = drv_rtc_wait_sync();
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}
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}
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/* Enable the write protection for RTC registers */
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RTC->WPR = 0xFF;
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}
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return res;
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}
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#include "stdio.h"
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char rtc_time_str[20];
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//Tan 2023/07/28 增加简易时间
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char *drv_rtc_get_time_string(void)
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{
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struct tm tmp;
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drv_rtc_get_time(&tmp.tm_hour, &tmp.tm_min, &tmp.tm_sec);
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sprintf(rtc_time_str, "%2d:%2d:%2d", tmp.tm_hour, tmp.tm_min, tmp.tm_sec);
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return rtc_time_str;
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}
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