ble_app_uart(SDK 15.0.0)

Question

Hi ,

I am using the example "ble_app_uart".

I enable uart while receiving data from nus handler and turn it off after transmitting.

After I mondified the code, it can't transmit data through UART.

But If I enable the uart peripheral while power on and never turn it off, it can work.

Is there any suggestion to fix this problem?

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static void nus_data_handler(ble_nus_evt_t * p_evt)
{
    uint8_t tmp_Status;
    
    if(uart_status == 0 )
    {
        tmp_Status = 0;
        uart_init();
    }
    
    for(uint16_t tmp = 0 ; tmp<0xFF ; tmp++);
    
    if (p_evt->type == BLE_NUS_EVT_RX_DATA)
    {
        uint32_t err_code;
        NRF_LOG_DEBUG("Received data from BLE NUS. Writing data on UART.");
        NRF_LOG_HEXDUMP_DEBUG(p_evt->params.rx_data.p_data, p_evt->params.rx_data.length);
        for (uint32_t i = 0; i < p_evt->params.rx_data.length; i++)
        {
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

static void nus_data_handler(ble_nus_evt_t * p_evt)
{
	uint8_t tmp_Status;
	
	if(uart_status == 0 )
	{
		tmp_Status = 0;
		uart_init();
	}
	
	for(uint16_t tmp = 0 ; tmp<0xFF ; tmp++);
	
	if (p_evt->type == BLE_NUS_EVT_RX_DATA)
	{
		uint32_t err_code;

		NRF_LOG_DEBUG("Received data from BLE NUS. Writing data on UART.");
		NRF_LOG_HEXDUMP_DEBUG(p_evt->params.rx_data.p_data, p_evt->params.rx_data.length);

		for (uint32_t i = 0; i < p_evt->params.rx_data.length; i++)
		{
			do
			{
				err_code = app_uart_put(p_evt->params.rx_data.p_data[i]);
				if ((err_code != NRF_SUCCESS) && (err_code != NRF_ERROR_BUSY))
				{
					NRF_LOG_ERROR("Failed receiving NUS message. Error 0x%x. ", err_code);
					APP_ERROR_CHECK(err_code);
				}
			} while (err_code == NRF_ERROR_BUSY);
		}
		if (p_evt->params.rx_data.p_data[p_evt->params.rx_data.length - 1] == '\r')
		{
			while (app_uart_put('\n') == NRF_ERROR_BUSY);
		}
	}

	if(tmp_Status == 0)
	{
		uart_status = 0;
		app_uart_close();
	}
}