kendryte K210 MAIX BIT C语言开发： RTC 开发 。

MAIX BIT 开发板 RTC时钟编程

K210 RTC API

int rtc_init(void) 		RTC初始化       
int rtc_timer_set(int year, int month, int day, int hour, int minute , int second) 设置RTC时间 
int rtc_timer_get(int ∗year, int ∗month, int ∗day, int ∗hour, int ∗minute , int ∗second) 获取RTC时间
int rtc_alarmr_set(int year, int month, int day, int hour, int minute , int second) 设置闹钟
int rtc_alarm_get(int ∗year, int ∗month, int ∗day, int ∗hour, int ∗minute , int ∗second) 获取闹事时间
int rtc_tick_irq_register(bool is_single_shot , rtc_tick_interrupt_mode_t mode,plic_irq_callback_t callback , void ∗ctx, uint8_t priority) 设置 RTC tick 中断，可以设置整秒、整分、整时、整天中断。
void rtc_tick_irq_unregister(void);注销 tick 中断。
int rtc_alarm_irq_register(bool is_single_shot , rtc_mask_t mask, plic_irq_callback_t callback , void ∗ctx, uint8_t priority)
void rtc_alarm_irq_unregister(void) 注册 alarm 中断

代码示例

#include <stdio.h>
#include <sysctl.h>
#include <rtc.h>

int alarm_irq(void *ctx) {
          
   
  printf(" %s :
", __func__);
  rtc_timer_get(&year, &month, &day, &hour, &minute, &second);
  printf("alarm_irq: %4d-%d-%d  %d:%d:%d
", year, month, day, hour, minute,
         second);
  return 0;
}
int tick_irq(void *ctx) {
          
   
  printf(" %s :
", __func__);
  rtc_timer_get(&year, &month, &day, &hour, &minute, &second);
  printf("tick_irq: %4d-%d-%d  %d:%d:%d
", year, month, day, hour, minute,
         second);
  return 0;

int main() {
          
   
  rtc_init();
  rtc_timer_set(2020, 5, 6, 17, 0, 0);
  rtc_timer_get(&year, &month, &day, &hour, &minute, &second);
  printf("Hello World
");
  printf("%4d-%d-%d__%d:%d:%d
", year, month, day, hour, minute, second);
  rtc_tick_irq_register(false, RTC_INT_MINUTE, tick_irq, NULL, 1);
  rtc_alarm_set(2020, 5, 6, 17, 0, 15);
  rtc_mask_t mask = (rtc_mask_t){
          
   
      .second = 7,
      .minute = 0,
      .hour = 0,
      .day = 0,
      .month = 0,
      .year = 0,
  };
  rtc_alarm_irq_register(false, mask, alarm_irq, NULL, 2);
  sysctl_enable_irq(); 打开系统中断
    while (1) {
          
   
    rtc_timer_get(&year, &month, &day, &hour, &minute, &second);
    printf("timer: %4d-%d-%d  %d:%d:%d
", year, month, day, hour,
    		minute,second); rtc_alarm_get(&year, &month, &day, &hour, &minute,
    &second); printf("alarm: %4d-%d-%d  %d:%d:%d
", year, month, day, hour,
 			minute,second);
    sleep(1);
  }
}