rtc BCD格式

总览

本示例主要介绍rtc BCD格式的使用方法。

准备及使用步骤

使用步骤：

插入将板子的USB电源线；

编译 customer_app/periperal/demo_rtc 工程并下载工程；

打开一个串口终端窗口（波特率为2000000，用于接收和发送uart消息）。

串口终端输入 demo_hosal_rtc_BCD ，启动rtc BCD的demo。

此时串口会先打印设置的rtc时间，然后等待10s，会打印当前的时间，应为设置的时间加上10s

应用实例

示例代码

#include <stdio.h>
#include <cli.h>
#include <hosal_rtc.h>
#include <blog.h>

void demo_hosal_rtc_BCD(void) {
    int ret1 = -1;
    int ret2 = -1;
    /* init rtc BCD format*/
    hosal_rtc_dev_t rtc;
    rtc.port = 0;
    rtc.config.format = HOSAL_RTC_FORMAT_BCD;
    hosal_rtc_init(&rtc);

    /* set rtc time */
    hosal_rtc_time_t time_buf;
    time_buf.sec     = 0x59;
    time_buf.min     = 0x59;
    time_buf.hr      = 0x23;
    time_buf.date    = 0x31;
    time_buf.month   = 0x12;
    time_buf.year    = 0x37;

    ret1 = hosal_rtc_set_time(&rtc, &time_buf);
    if (ret1 != 0) {
        blog_error("set error\r\n");
    }
    blog_info( "set time sec     = %x\r\n", time_buf.sec);
    blog_info( "set time min     = %x\r\n", time_buf.min);
    blog_info( "set time hr      = %x\r\n", time_buf.hr);
    blog_info( "set time date    = %x\r\n", time_buf.date);
    blog_info( "set time month   = %x\r\n", time_buf.month);
    blog_info( "set time year    = %x\r\n", time_buf.year + 0x2000);

    /* clear time buf and delay 10s */
    memset(&time_buf, 0, sizeof(hosal_rtc_time_t));
    vTaskDelay(10000);

    /* get rtc time */
    ret2 = hosal_rtc_get_time(&rtc, &time_buf);
    if (ret2 != 0) {
        blog_error("set error\r\n");
    }
    blog_info( "get time sec     = %x\r\n", time_buf.sec);
    blog_info( "get time min     = %x\r\n", time_buf.min);
    blog_info( "get time hr      = %x\r\n", time_buf.hr);
    blog_info( "get time weekday = %x\r\n", time_buf.weekday);
    blog_info( "get time date    = %x\r\n", time_buf.date);
    blog_info( "get time month   = %x\r\n", time_buf.month);
    blog_info( "get time year    = %x\r\n", time_buf.year + 0x2000);

    hosal_rtc_finalize(&rtc);

}

通过 hosal_rtc_dev_t 定义一个rtc设备，并设置port，格式设置为BCD格式。

int ret = -1
hosal_rtc_dev_t rtc;
rtc.port = 0;
rtc.config.format =HOSAL_RTC_FORMAT_BCD;

调用 hosal_rtc_init 初始化rtc。

ret = hosal_rtc_init(&rtc);
if (ret != 0) {
    blog_error("init rtc error\r\n");
}

通过 hosal_rtc_set_time 来设置rtc时间，此时按照BCD格式设置。

int ret = -1;
hosal_rtc_time_t time1;
time1.sec   = 0x59;
time1.min   = 0x59;
time1.hr    = 0x23;
time1.data  = 0x31;
time1.month = 0x12;
time1.year  = 0x37;
ret = hosal_rtc_set_time(&rtc, &time1);
if (ret != 0) {
    blog_error("set rtc time error\r\n");
}

通过 hosal_rtc_get_time 接口来获取rtc时间, 注意获取到的时间也是BCD格式的

hosal_rtc_time_t time2;
memset(&time, 0, sizeof(hosal_rtc_time_t));
ret = hosal_rtc_get_time(&rtc, &time2);
if(ret != 0) {
    blog_error("get rtc time error\r\n");
}
blog_info(" get time sec     = %x\r\n", time2.sec);
blog_info(" get time min     = %x\r\n", time2.min);
blog_info(" get time hr      = %x\r\n", time2.hr);
blog_info(" get time weekday = %x\r\n", time2.weekday);
blog_info(" get time data    = %x\r\n", time2.data);
blog_info(" get time month   = %x\r\n", time2.month);
blog_info(" get time year    = %x\r\n", time2.year);

通过 hosal_rtc_finalize 结束此rtc的使用

hosal_rtc_finalize(&rtc);