一、例程编译、烧录确认
首先按照全志在线文档平台的点灯教程确保能正常编译、烧录和点灯:https://xr806.docs.aw-ol.com/...
确保例程没问题后,我们再改造例程,实现我们想要的功能
二、代码编写
我们将hello工程复制一份改文件夹名为rtc\_demo,目录结构如下
rtc\_demo
├── BUILD.gn
└── src
└── main.c
然后BUILD.gn内容增加头文件引用,部分配置如下:
import("//device/xradio/xr806/liteos_m/config.gni")
static_library("app_rtc") {
configs = []
sources = [
"src/main.c",
]
cflags = board_cflags
include_dirs = board_include_dirs
include_dirs += [
"//kernel/liteos_m/kernel/arch/include",
]
}
~~~~
上一层的BUILD.gn内容为:
group("ohosdemo") {
deps = [
#"hello_demo:app_hello",
#"led_demo:app_led",
#"iot_peripheral:app_peripheral",
#"wlan_demo:app_WlanTest",
#"http_demo:app_myhttp",
#"tcp_demo:app_tcp",
#"web_server_demo:app_web",
#"uart_demo:app_uart",
#"pwm_led_demo:app_pwm_led",
"rtc_demo:app_rtc",
]
}
接下来是main.c,内容如下:
#include <stdio.h>
#include "ohos_init.h"
#include "kernel/os/os.h"
#include "driver/chip/hal_rtc.h"
#include <math.h>
#define OFFSET_YEAR 2000
#define GET_AD_YEAR(counterYear) (counterYear + OFFSET_YEAR)
#define GET_COUNTER_YEAR(adYear) (adYear - OFFSET_YEAR)
#define RTC_SET_LEAP_YEAR(isLeapYear) HAL_RTC_SetLeapYear(isLeapYear)
#define RTC_SET_DDHHMMSS(wday, hour, minute, second) HAL_RTC_SetDDHHMMSS(wday, hour, minute, second)
#define RTC_SET_YYMMDD(isLeapYear, year, month, mday) HAL_RTC_SetYYMMDD(isLeapYear, year, month, mday)
#define RTC_STOP_WDAY_ALARM(void) HAL_RTC_StopWDayAlarm(void)
#define RTC_STOP_SEC_ALARM(void) HAL_RTC_StopSecAlarm(void)
void rtc_get_yymmdd(uint8_t *isLeapYear, uint8_t *year, uint8_t *month, uint8_t *mday)
{
HAL_RTC_GetYYMMDD(isLeapYear, year, month, mday);
}
void rtc_get_ddhhmmss(RTC_WeekDay *wday, uint8_t *hour, uint8_t *minute, uint8_t *second)
{
HAL_RTC_GetDDHHMMSS(wday, hour, minute, second);
}
void analysis_wday(RTC_WeekDay wday, char *buf)
{
if (wday == 0)
sprintf(buf, "%s", "monday");
else if (wday == 1)
sprintf(buf, "%s", "tuesday");
else if (wday == 2)
sprintf(buf, "%s", "wednesday");
else if (wday == 3)
sprintf(buf, "%s", "thursday");
else if (wday == 4)
sprintf(buf, "%s", "friday");
else if (wday == 5)
sprintf(buf, "%s", "saturday");
else if (wday == 6)
sprintf(buf, "%s", "sunday");
}
/**
* @brief Determine whether it is a leap year
* @param[in] adYear : AD. year
* @return if it is a leap year return 1 else 0
*/
uint8_t is_leap_year(uint16_t adYear)
{
if ((adYear % 4 == 0 && adYear % 100 != 0)
|| (adYear % 400 == 0 && adYear % 3200 != 0)
|| (adYear % 172800 == 0))
return 1;
else
return 0;
}
/**
* @brief transform real AD year to counter year and Set the RTC date,
* including leaf year flag, year, month and month day
* @param[in] adYear : real AD year
* @return : return value < 0 on erro
*
* @note adYear = counter year + OFFSET_YEAR, counter year set to [0, 255]
*/
int rtc_set_yymmdd(uint16_t adYear, uint8_t month, uint8_t mday)
{
if (GET_COUNTER_YEAR(adYear) < 0) {
printf("\n\nERRO: adYear should be greater than OFFSET_YEAR!\n\n");
return -1;
} else if (GET_COUNTER_YEAR(adYear) > 255) {
printf("\n\nERRO: adYear should be less than (OFFSET_YEAR+255)!\n\n");
return -2;
}
RTC_SET_YYMMDD(is_leap_year(adYear), GET_COUNTER_YEAR(adYear), month, mday);
return 0;
}
void rtc_set_time(void)
{
/*set time : year mouth day hour minute second*/
printf("set time : 2021-21-27, tuesday, 15:57:50\n");
rtc_set_yymmdd(2021, 12, 27);
RTC_SET_DDHHMMSS(RTC_WDAY_TUESDAY, 15, 57, 50);
}
void rtc_read_time(void)
{
uint8_t leap, counterYear, mouth, mday;
uint16_t adYear;
RTC_WeekDay wday;
uint8_t hour, minute, second;
char buf[10];
printf("read time:\n");
rtc_get_yymmdd(&leap, &counterYear, &mouth, &mday);
rtc_get_ddhhmmss(&wday, &hour, &minute, &second);
analysis_wday(wday, buf);
adYear = GET_AD_YEAR(counterYear);
if (is_leap_year(adYear))
printf("Is Leap Year\n");
printf("%d-%d-%d, ", adYear, mouth, mday);
printf("%s,%d:%d:%d\n", buf, hour, minute, second);
}
void rtc_reset_leap_year(void)
{
uint8_t isLeapYear, counterYear, mouth, day;
uint16_t adYear;
rtc_get_yymmdd(&isLeapYear, &counterYear, &mouth, &day);
adYear = GET_AD_YEAR(counterYear);
isLeapYear = is_leap_year(adYear);
RTC_SET_LEAP_YEAR(isLeapYear);
}
void wday_alarm_callback(void *arg)
{
rtc_read_time();
RTC_STOP_WDAY_ALARM();
printf("wday alarm is arrive!!!\n\n");
}
void wday_alarm(void)
{
RTC_WDayAlarmStartParam wday_param;
printf("\nset wday alarm next day 0:0:20 \n");
wday_param.alarmHour = 0;
wday_param.alarmMinute = 0;
wday_param.alarmSecond = 20;
wday_param.alarmWDayMask = RTC_WDAY_ALARM_EN_BIT(RTC_WDAY_SUNDAY);
wday_param.arg = NULL;
wday_param.callback = wday_alarm_callback;
HAL_RTC_StartWDayAlarm(&wday_param);
}
void sec_alarm_callback(void *arg)
{
rtc_read_time();
printf("second alarm is arrive!!!\n\n");
}
void sec_alarm(void)
{
uint32_t alarmSecond;
RTC_SecAlarmStartParam secParam;
alarmSecond = 20;
printf("set sec alarm %us after\n", alarmSecond);
secParam.alarmSeconds = alarmSecond;
secParam.arg = NULL;
secParam.callback = sec_alarm_callback;
HAL_RTC_StartSecAlarm(&secParam);
}
/**
* @brief Read the time value (in microsecond) of the RTC's Free running counter
*
* Free running counter is a 48-bit counter which is driven by LFCLK and starts
* to count as soon as the system reset is released and the LFCLK is ready.
*
* @note can't printf more than 32 bit digital
*/
void read_free_run_time(void)
{
uint64_t freeRunTime = 0;
freeRunTime = HAL_RTC_GetFreeRunTime();
if (freeRunTime < pow(2, 32))
printf("ReadFreeRunTime: %u uS\n", (uint32_t)freeRunTime);
}
void show_run_time(void)
{
static int count = 40;
uint8_t isShow = 1;
printf("rtc show run time %d times start.\n", count);
while (isShow) {
if (count > 0) {
read_free_run_time();
count--;
} else
isShow = 0;
OS_Sleep(1);
}
printf("rtc show run time over.\n");
}
int rtc_init(void)
{
rtc_set_time();
rtc_read_time();
wday_alarm();
sec_alarm();
show_run_time();
return 0;
}
void rtc_deinit(void)
{
RTC_STOP_SEC_ALARM();
RTC_STOP_WDAY_ALARM();
}
/* Run this example, please connect the uart0 */
int rtc_test(void)
{
printf("rtc example started\n\n");
/*waiting for rtc stability*/
OS_MSleep(200);
rtc_init();
while (1) {
OS_Sleep(1);
rtc_read_time();
rtc_reset_leap_year();
}
}
SYS_RUN(rtc_test);
要想实现设置一次,一直运行rtc的话板子没有后备电池,所以,我也没有将设置时间的标志位写进flash,所以每次启动都会设置时间,这个只是一个rtc的demo