BT840E module programming issue

RE: BT840E module programming issue

Nguyen Hoan Hoang — Fri, 12 Jul 2019 12:46:28 GMT

Looks like it is protected. You are using a very old software which is no longer support for a long long time. It may not able to unprotect the nrf52840. You need to use nrfjprog for that.

RE: BT840E module programming issue

Hung Bui — Fri, 12 Jul 2019 12:25:50 GMT

Sorry for late response, was on vacation. Please post a log/screenshot with Jlink Commander, not nrfjprog.

RE: BT840E module programming issue

PEPL — Thu, 04 Jul 2019 10:39:24 GMT

One log file shared with an original(first) post... will it help ?

RE: BT840E module programming issue

Hung Bui — Mon, 24 Jun 2019 12:26:42 GMT

I don't think the mesh firmware could have any affect here. The SWD interface engages before any firmware can run.

Could you try using Jlink Commander and capture the log ? It may provide more logging information for us.

Please follow the instruction here: https://wiki.segger.com/J-Link_Commander

RE: BT840E module programming issue

PEPL — Mon, 24 Jun 2019 11:45:22 GMT

[quote user="hungbui"]You have 2 setups, both with the BT840E module. And on one of the custom board, the module worked fine and you don't have any problem to program it. But on the other custom board, you can't program it ? [/quote]

Yes that's correct...

[quote user="hungbui"]If it's the case, I would suggest to double check the PCB and soldering, connection. It's more likely a hardware issue.[/quote]

No, because in the beginning it was working fine, I have tried many examples on that module... And the other day I saw this error, and unable to program the module ..

The last code flashed in module was mesh example code...

By the way I thought the same as you, and checked the Hardware first, like voltage on the module supply pin and programmer pin, checked the voltage level as per suggested in datasheet like on reset pin , etc...

According to you what else do I test when this kind of issue get generated ?..

RE: BT840E module programming issue

Hung Bui — Fri, 21 Jun 2019 15:18:03 GMT

Please correct me if I'm wrong.

You have 2 setups, both with the BT840E module. And on one of the custom board, the module worked fine and you don't have any problem to program it. But on the other custom board, you can't program it ?

If it's the case, I would suggest to double check the PCB and soldering, connection. It's more likely a hardware issue.

RE: BT840E module programming issue

PEPL — Fri, 21 Jun 2019 13:53:18 GMT

Yes we are powering the module externally from our custom board....

We had embed a module to our custom designed board... and it powered(3.3V) from that...

Using a nrf52840 DK board for programming a module...

We have our two custom boards and the BLE module to other board is programming properly and working...

The hardware setup is shown as in above picture..

RE: BT840E module programming issue

Hung Bui — Fri, 21 Jun 2019 12:49:37 GMT

Hi,

Have you powered the module ? Which programmer did you use to program the module ?

Please take a close up photo of your hardware setup.