nRF52832 to mobile phone via BLE

RE: nRF52832 to mobile phone via BLE

Hung Bui — Mon, 26 Aug 2019 12:07:49 GMT

It's because you don't have the connection of the UART pin to the Segger chip on the DK. If you connect the UART pins of your nRF52 on the custom board to correspondent pins on the DK (TXD to P0.06, RXD to P0.08, RTS to P0.05 and CTS to P0.07) it should work.

RE: nRF52832 to mobile phone via BLE

Sai Kiran — Mon, 26 Aug 2019 04:45:10 GMT

Yeah, got it. I have connected the custom board to DK and it is working. However, I have some issue while observing the log output using Putty. Previously, using Putty, I was able to observe the Log values. Now, when I use the custom board, I am not able to observe the Log Output.

RE: nRF52832 to mobile phone via BLE

Hung Bui — Thu, 22 Aug 2019 11:27:49 GMT

It seems that the board has been reworked especially the components around the chip. C3 is also missing.

I would suggest you to test using another board.

You can also step into the code to debug and check where it assert. You can follow the debug guide here.

RE: nRF52832 to mobile phone via BLE

Sai Kiran — Thu, 22 Aug 2019 07:45:49 GMT

Hi.

I am using 15.3.0 version of SDK. I am just using the nrf_app_blinky example. I have not changed anything in that. So, hex file that I am using is the same as the hex file in the SDK. I am using s132 softdevice and Segger Embedded Studio v4.10.

As far as I know, there's 32kHz crystal on the board. I tried making the change you suggested regarding NRF_CLOCK_LF_SRC_RC. When I do that, the LED1 does not glow, which means that the configuration is wrong. And hence, I switched back to the previous configuration.

Here's the pic of the board-

RE: nRF52832 to mobile phone via BLE

Hung Bui — Wed, 21 Aug 2019 14:49:59 GMT

Please provide the hex files you used (softdevice and . Also please take a photo of the board you are using ? Do you have the 32kHz crystal on the board ? If you don't you need to configure the NRF_SDH_CLOCK_LF_SRC in sdk_config to NRF_CLOCK_LF_SRC_RC.

Which SDK version you are using ?

RE: nRF52832 to mobile phone via BLE

Sai Kiran — Wed, 21 Aug 2019 09:06:04 GMT

I am using nRF52832 board. I have tried blinky example and it's working. I have tried ble_app_uart also. The LED keeps blinking when I download the code. But the board is not detected in NRF Connect Mobile App.

RE: nRF52832 to mobile phone via BLE

Hung Bui — Wed, 21 Aug 2019 09:02:15 GMT

Which hardware board are you using ? Have you tried to test with any other example ? For example the blinky \examples\peripheral\blinky (not the ble_app_blinky).

Have you tried to flash the pre-compiled hex as instructed in the getting started guide ?

RE: nRF52832 to mobile phone via BLE

Sai Kiran — Wed, 21 Aug 2019 05:53:15 GMT

I have flashed the ble_app_blinky and also programmed softdevice. I still do not see any connection in nrf Connect app.

RE: nRF52832 to mobile phone via BLE

Hung Bui — Tue, 20 Aug 2019 07:34:49 GMT

Please follow the getting started tutorials.

RE: nRF52832 to mobile phone via BLE

Sai Kiran — Mon, 19 Aug 2019 16:01:06 GMT

I am confused between programming the softdevice and programming the board. What is the difference between them? I am using Segger Embedded Studio on Linux OS. Can you suggest how to program the softdevice and also the board?

RE: nRF52832 to mobile phone via BLE

Hung Bui — Mon, 19 Aug 2019 12:55:48 GMT

You need to flash the ble_app_blinky in our nRF5 SDK, in addition to the softdevice.

RE: nRF52832 to mobile phone via BLE

Sai Kiran — Mon, 19 Aug 2019 08:12:13 GMT

I have nrfBlinky and have programmed the softdevice. But, in the app, I am not able to find any connection. Any idea what could be the reason?

RE: nRF52832 to mobile phone via BLE

Hung Bui — Mon, 19 Aug 2019 07:56:39 GMT

Hi Sai,

The UART example is just an example of sending proprietary data over BLE. You don't need to use UART you can send anything you want with the example.
Another example you can have a look is the blinky example. In that example we send only 1 byte. But you can modify it to send more data.

You can download nrfBLinky app from google Play/App Store and source code is available on Github.

RE: nRF52832 to mobile phone via BLE

Marte Myrvold — Mon, 19 Aug 2019 07:46:42 GMT

Hi,

nRF Connect for Desktop has Linux support.

RE: nRF52832 to mobile phone via BLE

Sai Kiran — Mon, 19 Aug 2019 06:24:33 GMT

The example requires nRF Connect which I don't have as I use Ubuntu. What can I do about it?

RE: nRF52832 to mobile phone via BLE

Sai Kiran — Sun, 18 Aug 2019 15:05:54 GMT

Just to give more details, let's say we have 2 nRF52832 Development Kits. We can program one device as a client and another as a server and send the data between the two devices. Correct me, if I have understood in the wrong way. So, we are basically replacing one of the DKs with a mobile phone with nRF apps. So, in this scenario, which example do we use? I do not understand why should we use UART? Can we not simply send a normal text message that I can manually put in code?

RE: nRF52832 to mobile phone via BLE

Sai Kiran — Sun, 18 Aug 2019 14:53:47 GMT

Thanks for the reply. I shall look at the example suggested by you and get back to you if I have any other queries.

RE: nRF52832 to mobile phone via BLE

Hung Bui — Fri, 16 Aug 2019 10:48:04 GMT

Hi Sai,

You can find the UART profile inside nrf Toolbox app that can be use to interface with the example suggested by Marte.

RE: nRF52832 to mobile phone via BLE

Marte Myrvold — Fri, 16 Aug 2019 10:29:37 GMT

Hi Sai Kiran,

Does this example do something like what you want to do? It is a part of SDK 15.3.

Best regards,

Marte