sentry_chassis_hzz/modules/alarm/buzzer.c

#include "bsp_pwm.h"
#include "buzzer.h"
#include "bsp_dwt.h"
#include "string.h"
static PWMInstance *buzzer;
static uint8_t idx;
static BuzzzerInstance *buzzer_list[BUZZER_DEVICE_CNT] = {0};

/**
 * @brief 蜂鸣器初始化
 *
 */
void buzzer_init()
{
    PWM_Init_Config_s buzzer_config = {
            .htim = &htim4,
            .channel= TIM_CHANNEL_3,
            .dutyratio = 0,
            .period = 0.001,
    };
    buzzer = PWMRegister(&buzzer_config);
}

BuzzzerInstance *BuzzerRegister(Buzzer_config_s *config)
{
    if (config->alarm_level > BUZZER_DEVICE_CNT) // 超过最大实例数,考虑增加或查看是否有内存泄漏
        while (1)
            ;
    BuzzzerInstance *buzzer_temp = (BuzzzerInstance *)malloc(sizeof(BuzzzerInstance));
    memset(buzzer_temp, 0, sizeof(BuzzzerInstance));

    buzzer_temp->alarm_level = config->alarm_level;
    buzzer_temp->loudness = config->loudness;
    buzzer_temp->octave = config->octave;
    buzzer_temp->alarm_state = ALARM_OFF;

    buzzer_list[config->alarm_level] = buzzer_temp;
    return buzzer_temp;

}

void AlarmSetStatus(BuzzzerInstance *buzzer, AlarmState_e state)
{
    buzzer->alarm_state = state;
}

void BuzzerTask()
{
    BuzzzerInstance *buzz;
    for (size_t i = 0; i < BUZZER_DEVICE_CNT; ++i)
    {
        buzz = buzzer_list[i];
        if(buzz->alarm_level > ALARM_LEVEL_LOW)
        {
            continue;
        }
        if(buzz->alarm_state == ALARM_OFF)
        {
            PWMSetDutyRatio(buzzer, 0);
        }
        else
        {
            PWMSetDutyRatio(buzzer, buzz->loudness);
            switch (buzz->octave)
            {
                case OCTAVE_1:
                    PWMSetPeriod(buzzer, (float)1/DoFreq);
                    break;
                case OCTAVE_2:
                    PWMSetPeriod(buzzer, (float)1/ReFreq);
                    break;
                case OCTAVE_3:
                    PWMSetPeriod(buzzer, (float)1/MiFreq);
                    break;
                case OCTAVE_4:
                    PWMSetPeriod(buzzer, (float)1/FaFreq);
                    break;
                case OCTAVE_5:
                    PWMSetPeriod(buzzer, (float)1/SoFreq);
                    break;
                case OCTAVE_6:
                    PWMSetPeriod(buzzer, (float)1/LaFreq);
                    break;
                case OCTAVE_7:
                    PWMSetPeriod(buzzer, (float)1/SiFreq);
                    break;
            }
            break;
        }

    }

}