how to send the data to ble_app using usb dongle nrf52840

RE: how to send the data to ble_app using usb dongle nrf52840

sagarnayakm — Mon, 08 May 2023 06:11:54 GMT

Hello,

I have only one doubt here, without using the nrf52840 dongle, can we use a third-party dongle and connect our peripheral devices and send data from the peripheral to the dongle?

if yes, please let me know which dongle is suitable for receiving the data from a peripheral.

Thank You

RE: how to send the data to ble_app using usb dongle nrf52840

Jørgen Holmefjord — Wed, 29 Jan 2020 14:43:12 GMT

It would be helpful if you could answer all the questions, and not just one of them. As stated before, the dongle is not intended for development, exactly for reasons like this that you do not have a built-in debug interface.

Can you describe exactly what is failing, and where? Which pins do you use for I2C/TWI?

RE: how to send the data to ble_app using usb dongle nrf52840

ps_anu — Wed, 29 Jan 2020 08:57:22 GMT

yes , it is working fine in general .. but not usb dongle

RE: how to send the data to ble_app using usb dongle nrf52840

Jørgen Holmefjord — Tue, 28 Jan 2020 12:46:35 GMT

Most likely there is an error in your application. Are you checking error codes returned from all function calls? Is the issue you are seeing with transferring the I2C data over BLE/NUS, or are you having issues with reading the I2C device in general?

RE: how to send the data to ble_app using usb dongle nrf52840

ps_anu — Tue, 28 Jan 2020 12:27:11 GMT

yes i used above example program only . i merged the usbd_ble_uart example with twi, saadc example. receiving the adc data only i am not getting the i2c values why ?

RE: how to send the data to ble_app using usb dongle nrf52840

Jørgen Holmefjord — Tue, 28 Jan 2020 08:59:51 GMT

Hi,

The USB port of the Dongle will not work with the ble_app_uart examples. You should use the USBD BLE UART Example instead, which implements the USB CDC ACM library for sending UART data over the USB port.

Best regards,
Jørgen

RE: how to send the data to ble_app using usb dongle nrf52840

Ameer Usman — Tue, 28 Jan 2020 05:36:58 GMT

So the code was working fine in the default example but when you imported it, it is not.
Can you try to the default examples method of giving function the data argument:

static uint8_t data_array[BLE_NUS_MAX_DATA_LEN];

err_code = ble_nus_data_send(&m_nus, data_array, &length, m_conn_handle);   //Send data this way

RE: how to send the data to ble_app using usb dongle nrf52840

ps_anu — Tue, 28 Jan 2020 05:35:16 GMT

yes i am getting the data in the default example . that part is working fine ,only when i initiate the adc , twi i am not getting the data . i dono why ?

RE: how to send the data to ble_app using usb dongle nrf52840

Ameer Usman — Tue, 28 Jan 2020 04:15:53 GMT

But it should work nonetheless. Lets start from the default example given in the example folder first. Once you do that, what error or problem do you get.

RE: how to send the data to ble_app using usb dongle nrf52840

ps_anu — Tue, 28 Jan 2020 02:34:30 GMT

Yes I know .. But for that timing I need to use .. Pls help me later we will change to our custom board nRF52832

RE: how to send the data to ble_app using usb dongle nrf52840

awneil — Mon, 27 Jan 2020 13:49:30 GMT

The dongle is not intended for doing development on.

You really need to get the working on a pair of Dev Kits first.

RE: how to send the data to ble_app using usb dongle nrf52840

ps_anu — Mon, 27 Jan 2020 13:44:24 GMT

no i am getting the empty data

RE: how to send the data to ble_app using usb dongle nrf52840

Ameer Usman — Mon, 27 Jan 2020 13:34:59 GMT

Was the function working fine in the default example?

RE: how to send the data to ble_app using usb dongle nrf52840

ps_anu — Mon, 27 Jan 2020 13:28:44 GMT

yes i used , but i am new to nrf52840 usb dongle kit , i am not at all receiving the data from usb dongle . i merged the twi+adc example too

RE: how to send the data to ble_app using usb dongle nrf52840

ps_anu — Mon, 27 Jan 2020 13:23:55 GMT

No , i couldn't able to receive the data from usb dongle , and i am not receiving any data too in termite from app

even i installed cdc driver too .

RE: how to send the data to ble_app using usb dongle nrf52840

Ameer Usman — Mon, 27 Jan 2020 13:14:56 GMT

Ok one thing I see is:

uint32_t ble_nus_data_send(ble_nus_t * p_nus,
                           uint8_t   * p_data,
                           uint16_t  * p_length,
                           uint16_t    conn_handle)

So you need to pass address of the data to be exact.

But before that have you used the basic ble_app_uart example in its raw form?

RE: how to send the data to ble_app using usb dongle nrf52840

awneil — Mon, 27 Jan 2020 13:14:01 GMT

There are both Central & Peripheral examples for the Nordic UART Service (NUS) in the SDK.

Start with those ...

Have you tested your peripheral code with Nordic's app ?