MTK平台蜂鸣器设置

打开蜂鸣器：

void buzzer_play(void)
{
#ifdef __MTK_TARGET__
    DCL_HANDLE pwm_handle;
    PWM_CMD_CONFIG_OLD_T old_config;

    pwm_handle = DclPWM_Open(DCL_PWM1,MOD_UEM);
    old_config.freq = 2700;
    old_config.duty = 50;
    DclPWM_Control(pwm_handle,PWM_CMD_CONFIG_OLD,(DCL_CTRL_DATA_T*)&old_config);
    DclPWM_Control(pwm_handle,PWM_CMD_START,0);
    DclPWM_Close(pwm_handle);
#endif    
}

关闭蜂鸣器：

void buzzer_stop(void)
{
#ifdef __MTK_TARGET__
    DCL_HANDLE pwm_handle;
    
    pwm_handle=DclPWM_Open(DCL_PWM1,MOD_UEM);
    DclPWM_Control(pwm_handle,PWM_CMD_STOP,0);
    DclPWM_Close(pwm_handle);
#endif    
}