medical_beauty_photography/main/timer_u.c

#include "timer_u.h"

void timer_set_pause_and_counter_zero(int group, int timer)
{
    timer_pause(group, timer);
    timer_set_counter_value(group, timer, 0);
}

void port_timer_delay_ms(uint64_t delay)
{
    uint64_t timer_count = 0;
    timer_set_counter_value(TIMER_GROUP_0, TIMER_0, 0);
    timer_start(TIMER_GROUP_0, TIMER_0);

    while (timer_count < (delay * 1000))
    {
        timer_get_counter_value(TIMER_GROUP_0, TIMER_0, &timer_count);
    }

    timer_pause(TIMER_GROUP_0, TIMER_0);
}

void timer_group_init(int group, int timer, bool auto_reload, int timer_interval, uint32_t timer_unit_time)
{
    /* Select and initialize basic parameters of the timer */
    timer_config_t config = {
        .divider = 80,
        .counter_dir = TIMER_COUNT_UP,
        .counter_en = TIMER_PAUSE,
        .alarm_en = TIMER_ALARM_EN,
        .auto_reload = auto_reload,
    }; // default clock source is APB
    timer_init(group, timer, &config);

    /* Timer's counter will initially start from value below.
       Also, if auto_reload is set, this value will be automatically reload on alarm */
    timer_set_counter_value(group, timer, 0); //指定定时器首个计数值为0

    //检查定时器的当前值，调用函数 timer_get_counter_value() 或 timer_get_counter_time_sec()。
    //可通过调用函数 timer_pause() 随时暂停定时器。要再次启动它，调用函数 timer_start()。

    /* Configure the alarm value and the interrupt on alarm. */
    timer_set_alarm_value(group, timer, timer_interval * ((80 * timer_unit_time) / 80));

    timer_enable_intr(group, timer);

    // timer_isr_callback_add(group, timer, timer_group_isr_callback, NULL, 0);

    // timer_start(group, timer);
    timer_pause(group, timer);
}