RE: Turn PWM off and back on

Daniel Wang — Wed, 08 Mar 2017 18:01:48 GMT

You should not place that functionality in the bsp module. Instead create a buzzer function in main.c, that you call when you get a BLE_GAP_EVT_CONNECTED in the function on_ble_evt():

static void on_ble_evt(ble_evt_t * p_ble_evt)
{
    uint32_t err_code;

    switch (p_ble_evt->header.evt_id)
            {
        case BLE_GAP_EVT_CONNECTED:
            err_code = bsp_indication_set(BSP_INDICATE_CONNECTED);
            APP_ERROR_CHECK(err_code);
	    buzzer();
            m_conn_handle = p_ble_evt->evt.gap_evt.conn_handle;
            break;

        case BLE_GAP_EVT_DISCONNECTED:
            m_conn_handle = BLE_CONN_HANDLE_INVALID;
            break;

        default:
            // No implementation needed.
            break;
    }
}

Also set the duty cycle to 50 to make a sound, no reason to switch between 0 and 100. It also looks like you are initializing and enabling the pwm on every beep? If so, your code will run into the error handler.