I try to add NUS service in example ble_app_hrs_rscs_relay.
I have fail on send data from "Relay" to smart phone iOS nRF Toolbox.
1. I have modify the MTU size .
#define NRF_SDH_BLE_GATT_MAX_MTU_SIZE 247
2. I try to echo back the data as below code.
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 eNUS. 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
{
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);
}
{
uint16_t index = 0;
index = p_evt->params.rx_data.length;
{
NRF_LOG_DEBUG("Ready to send data over BLE NUS");
NRF_LOG_HEXDUMP_DEBUG(p_evt->params.rx_data.p_data, index);
do
{
err_code = ble_nus_c_string_send(&etest_m_nus_c, (uint8_t *)p_evt->params.rx_data.p_data, index);
if ( (err_code != NRF_ERROR_INVALID_STATE) && (err_code != NRF_ERROR_BUSY) )
{
APP_ERROR_CHECK(err_code);
}
} while (err_code == NRF_ERROR_BUSY);
index = 0;
}
if (ECHOBACK_BLE_UART_DATA)
{
// Send data back to smart phone.
do
{
NRF_LOG_DEBUG("send data back smart phone over BLE NUS");
NRF_LOG_HEXDUMP_DEBUG(p_evt->params.rx_data.p_data, index);
err_code = ble_nus_data_send(&etest_m_nus, (uint8_t *)p_evt->params.rx_data.p_data, &index, etest_m_conn_handle_nus_c); //test echo loop back
if ((err_code != NRF_SUCCESS) && (err_code != NRF_ERROR_BUSY))
{
NRF_LOG_ERROR("Failed sending NUS message to smart phone. Error 0x%x. ", err_code);
APP_ERROR_CHECK(err_code);
}
} while (err_code == NRF_ERROR_BUSY);
}
}
}
}
3. Bellow is debug message.
<info> app: Dbg: BLE_NUS_C_EVT_NUS_TX_EVT.
<debug> app: Receiving data.
<debug> app: FF FF A1 46 00 19 |；..
<error> app: Failed sending NUS message. Error 0x4.
<error> app: ERROR 4 [NRF_ERROR_NO_MEM] at ..\..\..\main.c:496
PC at: 0x00028777
<error> app: End of error report
4. How did I enlarge the RAM size?
Thanks a lot
