Flashing NRF51822 with STM32 JTAG Board

[anre]

Hello,

I've been trying to figure out if this board with STM32F103 (www.aliexpress.com/.../2042650923.html

can directly plug into my debug board

(www.aliexpress.com/.../32399375500.html to program the NRF51822.

From what I have read, the JTAG port should plug directly in and work but I am still not too sure.

Can anybody clear this up for me.

Thanks!

[Michael Dietz]

I would highly recommend using a J-Link debugger (great quality and best support with nRF5 devices/Nordic tools). The next best option is probably pyOCD (open source and free, debuggers very cheap) where you can use a CMSIS-DAP/DAP-Link debugger.

Note: you don't need to buy a J-Link debugger. If you already have (or want to buy) an nRF5 dev kit which has an on board J-Link debugger, and then use the Debug Out pins on the DK to use the J-Link debugger with a custom board.

However if you are dead set on using STLink, you can use openOCD.

This can serve as a guide for using OpenOCD to program nRF5 via STLink: github.com/.../Board:-yunjia-nrf51822

Just note, openOCD is difficult to set up and it will cause you headaches but nRF5 devices are supported in openOCD.

[liudijiang]

can nrf52832 use jtag chain ? i wanna program two nrf52832 with one connectors.

[Jørgen Holmefjord]

nRF52832 does not support JTAG, only SWD interface. SWD does not support daisy-chaining.

[godmode]

I had the same problem: only higher version of SWD support daisy chaing not the one in Nordic chips. You need to use own build SWD multiplexer to programm/debug multiple devices:
devzone.nordicsemi.com/.../what-is-the-swd-driver-impedance-of-swdio-line