NRF52 DK BLE Not Working?

RE: NRF52 DK BLE Not Working?

AWUk — Thu, 06 Oct 2016 16:09:21 GMT

Thanks Jørgen, you have been most helpful! Kind Regards

RE: NRF52 DK BLE Not Working?

Jørgen Holmefjord — Thu, 06 Oct 2016 12:04:12 GMT

Yes, if you use "Erase" function in Keil it does not remove softdevice. By using nrfjprog --eraseall, both softdevice and application will be erased.

RE: NRF52 DK BLE Not Working?

AWUk — Thu, 06 Oct 2016 09:28:31 GMT

Oh I see, so the "Erase" function which said it worked, in fact didn't entirely complete, the application gets erased (the BT function stops working at least) but the softdevice is still programmed in, is that what you are saying? If I use nrfjprog --eraseall, will that do the trick? Thanks

RE: NRF52 DK BLE Not Working?

Jørgen Holmefjord — Thu, 06 Oct 2016 07:41:47 GMT

Note that if a softdevice is flashed, you cannot erase using "Flash->Erase" command in Keil. Try erasing using nrfjprog or nRFgo Studio.

RE: NRF52 DK BLE Not Working?

AWUk — Wed, 05 Oct 2016 15:08:40 GMT

I did that, did a "erase" then download, it still says erase failed when downloading, but the stand alone "erase" function works.

RE: NRF52 DK BLE Not Working?

Jørgen Holmefjord — Wed, 05 Oct 2016 15:07:09 GMT

Good! You do not need to build the softdevice target, just press the download button to flash it to the board. If you tried building it, the hex-file migth have been deleted from the SDK folder. Extract it from the SDK zip-file or from here into components\softdevice\s132\hex

RE: NRF52 DK BLE Not Working?

AWUk — Wed, 05 Oct 2016 15:02:36 GMT

I coped 2.0.0 7 alpha by mistake, this now works when copying for SD 132 V3, when I load the project into Keil and select the softdevice from target it comes up with missing .h file errors, the application compiles fine though, any ideas? Is there an online resource for going through how the demos work to create our own for the softdevice? I am looking at getting one nRF52 DK board listening to several other nRF52 DK boards with BTLE, used for wireless sensors. Many Thanks

RE: NRF52 DK BLE Not Working?

Jørgen Holmefjord — Wed, 05 Oct 2016 14:57:44 GMT

You may have to erase the board depending on what you have flashed already. Which files did you merge? I merged the S132 v3.0.0 softdevice with the ble_app_beacon hex file compiled from pca10040 project, ending up at 365kB. That works fine when copied to the board.

RE: NRF52 DK BLE Not Working?

AWUk — Wed, 05 Oct 2016 14:46:41 GMT

Thanks Jørgen, I tried that and it says "Erase failed" "Error: Flash Download failed - "Cortex-M4" " I tried the merge hex and it created a 374kb hex file, I put this on the JLINK Drive but it seems to do nothing still? Many Thanks

RE: NRF52 DK BLE Not Working?

Jørgen Holmefjord — Wed, 05 Oct 2016 14:39:07 GMT

You need to select the target in the dropdown meny like this:

RE: NRF52 DK BLE Not Working?

AWUk — Wed, 05 Oct 2016 14:33:19 GMT

Hi Jørgen, Thank you for your suggestions, I am about to try the merge hex, When I open an example from Keil, there is no soft device separate "target" as mentioned in the guide, there is an nRF_SoftDevice section of the main application that has the s_132_nrf52_xxxx hex file and the softdevice_handoer.c file. Right Clicking gives me "Options for component class" rather than "target".

Many Thanks

RE: NRF52 DK BLE Not Working?

Jørgen Holmefjord — Wed, 05 Oct 2016 14:15:40 GMT

Hi,

If you want to use drag-and-drop programming (copying the hex file to JLINK drive), you need to merge softdevice and application into one file using mergehex. The board will be erased when programming the hex file using this method, removing your application or softdevice when you copy the second file.

You can program both softdevice and application to the board directly from keil. You can also program the board using nrfjprog commandline utility.

Best regards,

Jørgen