76 lines
1.4 KiB
C
76 lines
1.4 KiB
C
#include "by_buzzer.h"
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#include <string.h>
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#include "zf_common_headfile.h"
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#define BUZZER_TIME (100) // 蜂鸣器音节长度
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#define BUZZER_QUEUE_LENGTH (40)
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uint32_t time_out = 0;
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uint16_t queue_long = 0;
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uint32_t a[40] = {0};
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void queue_init(void)
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{
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queue_long = 0;
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memset(a, 0, sizeof(a));
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}
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void queue_add_element(int element)
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{
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if (queue_long < BUZZER_QUEUE_LENGTH) {
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a[queue_long] = element;
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queue_long += 1;
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}
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}
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void queue_pop_element(void)
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{
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memmove(a, &a[1], (queue_long - 1) * sizeof(a[0]));
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if (queue_long > 0) {
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queue_long--;
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}
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}
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void queue_pop_read(void)
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{
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while (queue_long != 0) {
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pwm_init(BUZZER_PIN, a[0], 5000);
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queue_pop_element();
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system_delay_ms(100);
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pwm_set_duty(BUZZER_PIN, 0);
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}
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}
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void by_buzzer_init(void)
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{
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queue_init();
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pwm_init(BUZZER_PIN, 2000, 0);
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by_buzzer_add(1250);
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by_buzzer_add(1500);
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by_buzzer_add(1700);
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by_buzzer_add(1500);
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by_buzzer_add(1200);
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by_buzzer_add(1500);
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}
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// TODO 异步写入问题，不可重入
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void by_buzzer_add(uint16_t tone)
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{
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queue_add_element(tone);
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}
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void by_buzzer_run(void)
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{
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if (queue_long != 0) {
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if (0 == time_out) {
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pwm_init(BUZZER_PIN, a[0], 5000);
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queue_pop_element();
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time_out = BUZZER_TIME;
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} else {
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time_out--;
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}
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} else {
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pwm_set_duty(BUZZER_PIN, 0);
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}
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} |