I'm using the UART / Serial Port Emulation over BLE example on the nRF52 development kit connected to a custom microcontroller.
I just need the nRF52 to simply relay bytes from the microcontroller UART back and forth over BLE. I have removed the check for \n and \r characters from the void_nus_data_handler function: -
static void nus_data_handler(ble_nus_evt_t * p_evt)
{
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);
// }
}
}
This part of the code works perfectly - anything received over BLE is correctly transmitted to the uController over UART.
The problem is with receiving data from UART and transmitting over BLE. It works fine as long as the received data from the UART is less than 20 bytes: -
switch ( p_event->evt_type )
{
case APP_UART_DATA_READY:
UNUSED_VARIABLE(app_uart_get(&data_array[index]));
index++;
if( ( index > 0 )
{
NRF_LOG_DEBUG("Ready to send data over BLE NUS");
NRF_LOG_HEXDUMP_DEBUG(data_array, index);
do
{
uint16_t length = (uint16_t)index;
err_code = ble_nus_data_send(&m_nus, data_array, &length, m_conn_handle);
if ((err_code != NRF_ERROR_INVALID_STATE) &&
(err_code != NRF_ERROR_RESOURCES) &&
(err_code != NRF_ERROR_NOT_FOUND))
{
APP_ERROR_CHECK(err_code);
}
} while (err_code == NRF_ERROR_RESOURCES);
index = 0;
}
Any help would be greatly appreciated!
Kind Regards,
ranger3
