Flash NRF52 on Windows with OpenOCD & FTDI

[flyingfishfinger]

Hi, I'm trying to get OpenOCD flashing to work on Windows using the FTDI 2232H adapter and an NRF52 target. I found this site:

https://www.allaboutcircuits.com/technical-articles/getting-started-with-openocd-using-ft2232h-adapter-for-swd-debugging/

and set it up accordingly with OpenOCD 0.10.0, and I seem to be able to at least dump registers.

However, the NRF52 config file doesn't make any provisions for flashing. From reading several posts here, it seemed that one had to patch OpenOCD in order to be able to flash this particular chip. But since I'm using precompiled Windows binaries, I'm not sure how to go about that.

Is there a Windows binary version that supports flashing the NRF52?

R

[Jørgen Holmefjord]

Hi,

Maybe this tutorial might provide some useful information? It seems to download some binary of OpenOCD for flashing nRF52 from Eclipse on Windows.

Any reasons why you can't build the binaries yourself?

Best regards,

Jørgen

[Nguyen Hoan Hoang]

I don't think OpenOCD driver for nRF5x series works with FTDI but this CMSIS-DAP JTAG has software support for nRF5x.

[Andre]

NRF52 Support has been merged into upstream OpenOCD on 2017-10-03 However, it seems the latest OpenOCD build by the GNU MCU Eclipse project is based on older sources. Therefore I think the best option is to build it yourself from the latest git sources.

[flyingfishfinger]

I've gotten a bit further building it myself on Ubuntu, but I still can't flash.

If I use the current, unpatched version, I get the error " flash driver 'nrf52' not found. Apparently that's what the patch was for.

With the patch applied to the correct commit, I can at least connect and dump registers but flash writes seem to fail.

I'm specifically working with the NRF52840, if that helps.

Should I start a different question if I moved to Ubuntu?

R

[flyingfishfinger]

Tried this, without the patch from my initially linked articles it just says "flash driver "nrf52" not found"....