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51 lines
1.7 KiB
51 lines
1.7 KiB
#include "timer_u.h"
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void timer_set_pause_and_counter_zero(int group, int timer)
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{
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timer_pause(group, timer);
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timer_set_counter_value(group, timer, 0);
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}
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void port_timer_delay_ms(uint64_t delay)
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{
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uint64_t timer_count = 0;
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timer_set_counter_value(TIMER_GROUP_0, TIMER_0, 0);
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timer_start(TIMER_GROUP_0, TIMER_0);
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while (timer_count < (delay * 1000))
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{
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timer_get_counter_value(TIMER_GROUP_0, TIMER_0, &timer_count);
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}
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timer_pause(TIMER_GROUP_0, TIMER_0);
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}
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void timer_group_init(int group, int timer, bool auto_reload, int timer_interval, uint32_t timer_unit_time)
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{
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/* Select and initialize basic parameters of the timer */
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timer_config_t config = {
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.divider = 80,
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.counter_dir = TIMER_COUNT_UP,
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.counter_en = TIMER_PAUSE,
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.alarm_en = TIMER_ALARM_EN,
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.auto_reload = auto_reload,
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}; // default clock source is APB
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timer_init(group, timer, &config);
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/* Timer's counter will initially start from value below.
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Also, if auto_reload is set, this value will be automatically reload on alarm */
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timer_set_counter_value(group, timer, 0); //指定定时器首个计数值为0
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//检查定时器的当前值，调用函数 timer_get_counter_value() 或 timer_get_counter_time_sec()。
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//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()。
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/* Configure the alarm value and the interrupt on alarm. */
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timer_set_alarm_value(group, timer, timer_interval * ((80 * timer_unit_time) / 80));
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timer_enable_intr(group, timer);
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// timer_isr_callback_add(group, timer, timer_group_isr_callback, NULL, 0);
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// timer_start(group, timer);
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timer_pause(group, timer);
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}
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