I want to use the pwm to control buzzer, but when I use init function, the power will increase 880 uA, how to decrease the power.
void beep_on(void)//beep on
{
app_pwm_channel_duty_set(&PWM1, 0, warning_voice);
}
void beep_off(void)
{
app_pwm_channel_duty_set(&PWM1, 0, 0);
}
void beep_on_on(void)
{
beep_pwm_init();
}
void beep_off_off(void)
{
app_pwm_uninit(&PWM1);//in this
nrf_gpio_cfg_output(BEEP);
nrf_gpio_pin_clear(BEEP);
}
bool ready_flag1=0;
void pwm1_ready_callback(uint32_t pwm_id) // PWM callback function
{
ready_flag1 = true;
}
void beep_pwm_init(void)
{
app_pwm_config_t pwm1_cfg = APP_PWM_DEFAULT_CONFIG_1CH(260,BEEP);//(250L,1,9);//
pwm1_cfg.pin_polarity[0] = APP_PWM_POLARITY_ACTIVE_HIGH;
app_pwm_init(&PWM1,&pwm1_cfg,pwm1_ready_callback);
app_pwm_enable(&PWM1);
app_pwm_channel_duty_set(&PWM1, 0, 0);
}
1、first, I use beep_pwm_init() before for(;;), and the testing instrument display the power is increase 880uA. and then, I use beep_on() and beep_off() to start or stop the buzzer. and the connection is good, not always disconnected.
2、I use another way. I use beep_on_on() function when I want the buzzer work, and when I want the buzzer off, I use the beep_off_off(), the power is decreased, but the connection is no longer stable.
please help me to over come this question, thanks.
