nrf51822 Minew's Module is not recognized by NRF51DK

RE: nrf51822 Minew's Module is not recognized by NRF51DK

Vijay — Wed, 13 Jun 2018 01:00:46 GMT

Hi fercholas, did you get this issue fixed? I am using a nRF52 PDK to program my nRF52810 IC - and I have the same issue as yours.

Thanks,

-vivenkat

RE: nrf51822 Minew's Module is not recognized by NRF51DK

pavan — Mon, 07 Aug 2017 11:44:00 GMT

thank you sir

RE: nrf51822 Minew's Module is not recognized by NRF51DK

Håkon Alseth — Mon, 07 Aug 2017 11:41:05 GMT

Yes, VTG and VDD_NRF must be connected together to ensure that the voltage is equal on the nRF5x-DK and your custom board.

RE: nrf51822 Minew's Module is not recognized by NRF51DK

pavan — Mon, 07 Aug 2017 10:46:33 GMT

Hello Sir, I also designed one custom board and trying to program it.

Do i need to connect the Vnrf(pin 1),SWDIO,SWCLK,GND pins to my custom board and short the vdd and vtg pins? please confirm

RE: nrf51822 Minew's Module is not recognized by NRF51DK

endnode — Tue, 06 Jun 2017 08:47:52 GMT

Glad to help:)

RE: nrf51822 Minew's Module is not recognized by NRF51DK

Chocol8 — Tue, 06 Jun 2017 08:45:31 GMT

This configuration really works! Thank you su much, Jan! Had this problem for a long time...

RE: nrf51822 Minew's Module is not recognized by NRF51DK

RichieJH — Mon, 08 Aug 2016 08:12:51 GMT

Pin 8 needs to go to Module's GND AND a GND on the DK. So you need to run two wires off Pin 8 - one to Module and one to many of the GND pins on the DK.

RE: nrf51822 Minew's Module is not recognized by NRF51DK

Martin — Mon, 08 Aug 2016 07:58:19 GMT

Hi I experienced something like this with a custom board some while ago. The problem was another diode being between vdd on custom board which led to an additional drop of 0.15V which in course was then 2.7 on the SoC... Try to short an additional supply of 3V to VTG, disconnect P20 pin 2. This approach solved it for me. It's working ever since.

RE: nrf51822 Minew's Module is not recognized by NRF51DK

endnode — Fri, 05 Aug 2016 19:33:30 GMT

Hi,

Well then you might skip connecting VCC to SH_VTG and instead just short PINs 2 and 3 (VIO and SH_VTG). Also could you use other target board - e.g. another nRF5x DK - and make your SEGGER J-Link OB work with it? Otherwise it can be any kind of HW/SW problem in your set-up (the only help I can provide is ton of pictures and videos how it works for me on several target boards + traces from nrfjprog or SEGGER J-Flash Lite but on WINDOWS;)

Cheers Jan

RE: nrf51822 Minew's Module is not recognized by NRF51DK

fercholas — Fri, 05 Aug 2016 19:21:52 GMT

Hi,

So, your external board does not have an external supply? .

I am using a C2032 battery to power up the module.

RE: nrf51822 Minew's Module is not recognized by NRF51DK

fercholas — Fri, 05 Aug 2016 19:19:33 GMT

Hi Borut Thanks for answering. I have tried with the connection of P20 pins 2 and 3 without results.

P20 pin 4 for SWDIO
P20 pin 5 for SWDCLK
P20 pin 8 for a connection between Modules's ground and NRF51DK's ground.
P20 2 and 3 shorted.

This is the Segger Jlink output on Ubuntu:

nicolas@nicolas:~$ sudo JLinkExe -device nRF51822 -speed auto -if swd
SEGGER J-Link Commander V5.12e (Compiled Apr 29 2016 15:06:32)
DLL version V5.12e, compiled Apr 29 2016 15:06:27

Connecting to J-Link via USB...O.K.
 Firmware: J-Link OB-SAM3U128-V2-NordicSemi compiled Mar 15 2016 18:03:17
 Hardware version: V1.00
 S/N: 681325908
 VTref = 3.300V


  Type "connect" to establish a target connection, '?' for help
  J-Link> connect
  Device "NRF51822_XXAA" selected.
  TotalIRLen = ?, IRPrint = 0x..000000000000000000000000


   Found SWD-DP with ID 0x0BB11477
   Found Cortex-M0 r0p0, Little endian.
   FPUnit: 4 code (BP) slots and 0 literal slots
   CoreSight components:
   ROMTbl 0 @ F0000000
   ROMTbl 0 [0]: F00FF000, CID: B105100D, PID: 000BB471 ROM Table
   ROMTbl 1 @ E00FF000
   ROMTbl 1 [0]: FFF0F000, CID: B105E00D, PID: 000BB008 SCS
   ROMTbl 1 [1]: FFF02000, CID: B105E00D, PID: 000BB00A DWT
   ROMTbl 1 [2]: FFF03000, CID: B105E00D, PID: 000BB00B FPB
   ROMTbl 0 [1]: 00002000, CID: B105900D, PID: 000BB9A3 ???
   Cortex-M0 identified.

This device corresponds to nrf51DK's chip. I can't see module's chip. Thanks in advance!

RE: nrf51822 Minew's Module is not recognized by NRF51DK

fercholas — Fri, 05 Aug 2016 19:09:21 GMT

Hi Martin

Thanks for answering. I have tried with the connection of P20 pins 2 and 3 without results.

P20 pin 4 for SWDIO
P20 pin 5 for SWDCLK
P20 pin 8 for a connection between Modules's ground and NRF51DK's ground.
P20 2 and 3 shorted.

Without the pins 2 and 3 short I have these voltages:

2.86V at VDD pin.
2.89 V at VTG pin
2.86 V at VnRF pin

This is the Segger Jlink output on Ubuntu:

nicolas@nicolas:~$ sudo JLinkExe -device nRF51822 -speed auto -if swd
SEGGER J-Link Commander V5.12e (Compiled Apr 29 2016 15:06:32)
DLL version V5.12e, compiled Apr 29 2016 15:06:27

Connecting to J-Link via USB...O.K.
Firmware: J-Link OB-SAM3U128-V2-NordicSemi compiled Mar 15 2016 18:03:17
Hardware version: V1.00
S/N: 681325908
VTref = 3.300V


Type "connect" to establish a target connection, '?' for help
J-Link> connect
Device "NRF51822_XXAA" selected.
TotalIRLen = ?, IRPrint = 0x..000000000000000000000000


Found SWD-DP with ID 0x0BB11477
Found Cortex-M0 r0p0, Little endian.
FPUnit: 4 code (BP) slots and 0 literal slots
CoreSight components:
ROMTbl 0 @ F0000000
ROMTbl 0 [0]: F00FF000, CID: B105100D, PID: 000BB471 ROM Table
ROMTbl 1 @ E00FF000
ROMTbl 1 [0]: FFF0F000, CID: B105E00D, PID: 000BB008 SCS
ROMTbl 1 [1]: FFF02000, CID: B105E00D, PID: 000BB00A DWT
ROMTbl 1 [2]: FFF03000, CID: B105E00D, PID: 000BB00B FPB
ROMTbl 0 [1]: 00002000, CID: B105900D, PID: 000BB9A3 ???
Cortex-M0 identified.

This device corresponds to nrf51DK's chip. I can't see module's chip.

Thanks in advance!

RE: nrf51822 Minew's Module is not recognized by NRF51DK

endnode — Fri, 05 Aug 2016 19:08:26 GMT

Hi, hard to say what's wrong then. For me it works even when I play with second nRF5x DK board (if I bridge P20 SWD PINs to standard 10-pin SEGGER connector then I can flash nRF5x chip on the other DK without problems) so it might indicate problems with this one particular custom board. I'm using Pin 1 of P20 (VDD_nRF) to power target board by 3V. Yes, you can use other pins from other headers on nRF5x DK to achieve the same...

Cheers Jan

RE: nrf51822 Minew's Module is not recognized by NRF51DK

fercholas — Fri, 05 Aug 2016 18:57:44 GMT

Hi endnode

Thanks for answering. I have tried with the connection of P20 pins 2 and 3 without results.

P20 pin 4 for SWDIO
P20 pin 5 for SWDCLK
P20 pin 8 for a connection between Modules's ground and NRF51DK's ground.
P20 2 and 3 shorted.

I am not using P20 pin 1. How do you use it?

Thanks in advance

RE: nrf51822 Minew's Module is not recognized by NRF51DK

bx — Fri, 05 Aug 2016 09:33:29 GMT

Hi,

previous answers are correct that you need to short VCC to VTG.

Additionally you need a proper GND connection to your circuit, as GND_DETECT (pin 8 on P20) is an "input" that triggers use of external module (might be an oversimplification). I suggest you short one GND from connector P1 to your module, and short another GND to GND_DETECT.

Best regards,

Borut

RE: nrf51822 Minew's Module is not recognized by NRF51DK

RichieJH — Fri, 05 Aug 2016 09:06:06 GMT

My voltmeter says I'm outputting 2.86volts to my custom PCB through the nRF 52 DK and the DK picks it up fine.

RE: nrf51822 Minew's Module is not recognized by NRF51DK

Martin — Fri, 05 Aug 2016 08:41:44 GMT

I had a similiar problem. The cause was not enough current being supplied over USB (<=2.9V on DK, measured at VTG).

Try the following: Short circuit VDD over VTG to device.

This enabled me to programm all devices without any trouble. From my experience you need to have at least 2.95V to programm the NRF.

Best

Martin

RE: nrf51822 Minew's Module is not recognized by NRF51DK

endnode — Fri, 05 Aug 2016 08:41:10 GMT

Hi,

Not sure if I understood correctly your problem but I'm using nRF52 and nRF51 DK boards to flash dozens of custom boards daily and my working set-up through external header P20 is:

P20 pin 4 for SWDIO
P20 pin 5 for SWDCLK
P20 pin 7 for SWD RESET (optional - many designs don't use this and even if they do you can skip it)
Powering: P20 pin 1 for 3V3
Ground: any GND pin on the DK (not sure if you can use pin 8 from P20, I use pins explicitly saying GND)

Now key trick: you need to tell to SEGGER J-Link OB (on-board) that it should use P20 neither P19 nor internal connection to nRF5x chip. I do it through simple connection of P20 pins 2 and 3. Again it might work also with other shorts but this is what you are missing I believe.

Cheers Jan

RE: nrf51822 Minew's Module is not recognized by NRF51DK

Håkon Alseth — Fri, 05 Aug 2016 07:10:59 GMT

Hi,

What is the output of JLinkExe (J-Link Commander in windows)? If this successfully finds a target and a valid voltage, you shall also be able to contact the device using nrfjprog from command line:

nrfjprog --recover // do this just in-case nrfjprog --program nrfjprog --pinreset

The "blinky" demo is a good application for a visual indication to see if you are programming the nRF51-DK or your external board. The "program external board" feature is a bit tricky, as the voltage must be equal on the external board and the nRF51-DK, for it to work properly.

edit ; my first answer was incorrect. sorry.

Cheers, Håkon

RE: nrf51822 Minew's Module is not recognized by NRF51DK

fercholas — Thu, 04 Aug 2016 21:02:48 GMT

Hi awneil

"Minew" told us that the module can be programmable through the Nordic's Development kit. In fact, there is a tutorial using a similar module from the same company.

Programming a Minew Tech iBeacon Bluetooth module - Nordic nRF51822

Thanks for your answer!

RE: nrf51822 Minew's Module is not recognized by NRF51DK

awneil — Thu, 04 Aug 2016 20:49:51 GMT

Have you asked "Minew" about this?

Do they actually intend that this connection should be used for programming/debugging? (the fact that the pin is labelled just "DO" rather than "DIO" is suspicious...)