52805 programmer problem

RE: 52805 programmer problem

?? — Mon, 23 Nov 2020 01:41:37 GMT

Hi,Jared,

The problem has been found，

and I had set CONFIG_GPIO_AS_PINRESET. so....

Thanks for your help.

RE: 52805 programmer problem

Jared — Thu, 19 Nov 2020 13:22:15 GMT

Hi,

I've tried programming a nRF52805 with nrfjprog and did not experience any issues.

What kind of debugger are you using? J-link? Which model?

Could you upload the log from nrfjprog?:

nrfjprog --recover --log

Note sure if you answered my previous question regarding VDD or not:

[quote user="Jared"]

Could you try to measure the VDD_nRF voltage while you try to program the board? Use a oscilloscope and take a trace of the voltage. Is the voltage stable? Could you upload the trace?

Alternatively try to omit the button switch stage by supplying the board directly with VDD from a bench supply while you try to program the board.

[/quote]

RE: 52805 programmer problem

?? — Thu, 19 Nov 2020 01:00:49 GMT

Dear Jared,

1.yes. use nRF Connect Programmer app. 1.4.7, but maybe this is the latest version.

2. still fail

3. I've tried it. got nothing.

I first check whether this board has problems, so I am looking for someone else's good board to verify.

thanks

RE: 52805 programmer problem

Jared — Wed, 18 Nov 2020 09:21:45 GMT

Hi,

Are you using the nRF Connect Programmer app? Are you using v1.4.7, if not can you update it and see if the issue is persistent?

Could you try to recover the unresponsive device with:

nrfjprog --recover

Could you try to measure the VDD_nRF voltage while you try to program the board? Use a oscilloscope and take a trace of the voltage. Is the voltage stable? Could you upload the trace?

Alternatively try to omit the button switch stage by supplying the board directly with VDD from a bench supply while you try to program the board.

RE: 52805 programmer problem

?? — Tue, 17 Nov 2020 08:37:49 GMT

ps:

I use the JLINK on the development board, and there is no problem burning other boards. The connection is as follows:

VTG -> VCC of the board

SWDIO

SWDCLK

GND

The board is self powered。

RE: 52805 programmer problem

?? — Tue, 17 Nov 2020 08:15:04 GMT

Dear Jared,

FYI, press K1 before burning and at all the time while burning.

RE: 52805 programmer problem

Jared — Tue, 17 Nov 2020 07:40:17 GMT

Hi,

How are you powering the customers board when you try to flash the application and it fails?

Could you share the schematics of the customers board? I can make the case private first if you prefer it.

regards

Jared

RE: 52805 programmer problem

?? — Mon, 16 Nov 2020 23:26:00 GMT

Do Nordic member have any suggestions? Thanks very much.