BLE disconnects when LTE publish data in Fanstel module PKBLG840F

RE: BLE disconnects when LTE publish data in Fanstel module PKBLG840F

Surya09 — Mon, 13 May 2024 13:44:37 GMT

fixed it! in the config, I turned off the logging.

RE: BLE disconnects when LTE publish data in Fanstel module PKBLG840F

Surya09 — Wed, 08 May 2024 09:25:23 GMT

HiCharlie

Thanks for reply.

But, I not using nRF SDK Connect which has Zephyr support. Instead I am developing application using nrf52840_sdk.

RE: BLE disconnects when LTE publish data in Fanstel module PKBLG840F

Charlie — Wed, 08 May 2024 09:20:57 GMT

Hi Siddharth,

In the uart_event_handle, you can try to use k_work_submit to fire a work to send a message through BLE instead of using ble_nus_c_string_send since it is inside interrupt.

Connectivity bridge application do the exact job as nRF52840 on BLG840F according to your description. You can also try to refer to its source codes.

Best regards,

Charlie

RE: BLE disconnects when LTE publish data in Fanstel module PKBLG840F

Surya09 — Tue, 07 May 2024 13:32:07 GMT

Charlie sorry I meant, the uart_event_handler.

void uart_event_handle(app_uart_evt_t * p_event)
{
  
    //static uint8_t data_array[BLE_NUS_MAX_DATA_LEN];
    //static uint16_t index = 0;
    //uint32_t ret_val;

    //switch (p_event->evt_type)
    //{
    //    /**@snippet [Handling data from UART] */
    //    case APP_UART_DATA_READY:
    //        UNUSED_VARIABLE(app_uart_get(&data_array[index]));
    //        index++;

    //        if ((data_array[index - 1] == '\n') ||
    //            (data_array[index - 1] == '\r') ||
    //            (index >= (m_ble_nus_max_data_len)))
    //        {
    //            NRF_LOG_DEBUG("Ready to send data over BLE NUS");
    //            NRF_LOG_HEXDUMP_DEBUG(data_array, index);

    //            do
    //            {
    //                ret_val = ble_nus_c_string_send(&m_ble_nus_c, data_array, index);
    //                if ( (ret_val != NRF_ERROR_INVALID_STATE) && (ret_val != NRF_ERROR_RESOURCES) )
    //                {
    //                    APP_ERROR_CHECK(ret_val);
    //                }
    //            } while (ret_val == NRF_ERROR_RESOURCES);

    //            index = 0;
    //        }
    //        break;

    //    /**@snippet [Handling data from UART] */
    //    case APP_UART_COMMUNICATION_ERROR:
    //        NRF_LOG_ERROR("Communication error occurred while handling UART.");
    //        APP_ERROR_HANDLER(p_event->data.error_communication);
    //        break;

    //    case APP_UART_FIFO_ERROR:
    //        NRF_LOG_ERROR("Error occurred in FIFO module used by UART.");
    //        APP_ERROR_HANDLER(p_event->data.error_code);
    //        break;

    //    default:
    //        break;
    //}
}

RE: BLE disconnects when LTE publish data in Fanstel module PKBLG840F

Charlie — Tue, 07 May 2024 13:23:53 GMT

Hi Siddharth,

Do you mean uart_cb function in nRF9160.c cause the issue?

I feell confuse how it would affect sending data from Fanstel nrf52840 to nrf52840dk, since uart_cb only receive data from nRF9160 serial port and send it through MQTT.

Best regards,

Charlie

RE: BLE disconnects when LTE publish data in Fanstel module PKBLG840F

Surya09 — Tue, 07 May 2024 08:08:57 GMT

Update:

The UART callback was creating the issue. When I commented it out, it works but the downside is that I won't be able to send data from Fanstel nrf52840 to nrf52840dk. So, not still sure what's the issue is?