I want to read the integer value from ble and turn on the led?

[HasanYilmaz]

       int8_t oku[1];
           int8_t  err_code;
static void nus_data_handler(ble_nus_evt_t * p_evt)
{
 if (p_evt->type == BLE_NUS_EVT_RX_DATA)
    { 
 

        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); //Data is recieved here, 

        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]);
                oku[i]=err_code;
                  if(oku[i]=='1')
                  {
                  nrf_gpio_pin_clear(LED);
                  }
                  if(oku[i]=='2')
                  {
                  nrf_gpio_pin_set(LED);
                  }
                
         
                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);
        }
    }

}

[Simon]

Try this:

int8_t oku;
int8_t  err_code;
static void nus_data_handler(ble_nus_evt_t * p_evt)
{
 if (p_evt->type == BLE_NUS_EVT_RX_DATA)
    { 
 

       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); //Data is recieved here, 

        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]);
                oku=p_evt->params.rx_data.p_data[i];
                if(oku=='1'){
                    nrf_gpio_pin_clear(LED);
                }
                if(oku=='2'){
                    nrf_gpio_pin_set(LED);
                }
                
         
                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);
        }
    }

}

Best regards,

Simon