How could I program the BMD-300 with a nRF52 Preview Development Kit?

[Nitram]

Hello Everyone,

I want to program the BMD-300 with the nRF52 Preview Development Kit. I have connected:

BMD-300 -> nRF52-DK

SWDIO -> SH_SWDIO (pin #4) on P20

SWDCLK -> SH_SWDCLK (pin #5) on P20

VDD -> SH_VTG (pin #3) on P20

GND -> SH_GND_DETECT (pin #8) on P20

The BMD-300 is powered by a generator (3V).

JTAG connector: www.tag-connect.com/.../TC2050-IDC-NL Datasheet.pdf

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Now, when I use nRFgo Studio, it doesn’t work: Following Text is written:

Latest motherboard firmware: 7000 Boards connected: No boards connected.

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When I use µvision (Keil), it doesn’t work too. Following Text is written:

JLink – Cortex-M Error No Cortex-M SW Device Found

µVision Error: Flash Download faild – Target DLL has been cancelled

Build Output:

JLink info:

DLL: V5.12f, compiled May 17 2016 16:03:35

Firmware: J-Link OB-SAM3U128-V2-NordicSemi compiled Mar 15 2016 18:03:17

Hardware: V1.00

S/N : 682984698

JLink Info: Found SWD-DP with ID 0x2BA01477

JLink Error: Communication timed out: Requested 20 bytes, received 0 bytes ! Could not read hardware status!

Error: Flash Download failed - Target DLL has been cancelled

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If someone knows, what I have done wrong, I would be happy, if he/she could help me.

Thank you

[Ole Bauck]

The setup looks correct, but the error indicates that something on the interface is not connected, the debug wires are switched or the device does not have power. Can you check that everything is connected properly and include a picture in your questions if you still have problems?

[Nitram]

I have checked the connection of SWDIO, SWDCLK, VDD and GND with a multimeter (from P20 to the nrf52832 of the BMD-300), but I couldn’t find an error. The program, which has been on the chip since buying, works. When I connect the BMD-300 with the Dev Kit and I start the nrfgo, the current of the generator, which supplies the BMD-300, rises and the LED L05 goes off.

[Keton]

BMD300 require performing recovery before flashing softdevice. do nrfjprog --family nrf52 --recover before you try anything else.

Also in my experience it is quite poor quality oftentimes nRFGoStudio says flash is not erased despite --recover and many attempts of full chip erase. And since I have no remedy for that I have to discard a chip and take new one. Any ideas what it may mean?

[Nitram]

Thanks for your help. Now, I can program the BMD-300. But the program doesn’t start. I have also program the nrf52832 of the Dev Kit and there it works.

[Keton]

@Nitram if you preform recover on the nRF52DK does it work? Aslo make sure that you've flashed correct softdevice. Receover operation wipes all data from chip so softdevice should be reflashed i.e. using nRFGoStudio. Also check your memory map.