MicroPython Forum

I've only recently picked this back up and I'm really only using it for logging functionality so basic inserts myself. I have gone back and shrunk the size considerably and also worked through some more kinks including some with regards to "errno" so If you do pick up the project again make sure to...

Did you have any luck resolving this? I'm getting back into the codebase as I can't get it to fit onto my Feather Huzzah and I'd like to incorporate whatever fixes you did or work on fixing it myself. Do you have the code that you ran to get the error? I was able to get a simple insert query workin...

I figured out how to use OpenOCD to program the nRF52840-dongle using only a Raspberry Pi as the debugging interface (no need for a J-link).

I made a YouTube tutorial if anyone is interested:
https://youtu.be/R5wub5ywzTU

dhylands wrote: ↑

Sun Feb 10, 2019 4:07 pm

Does the REPL work over USB with the nrf52840 dongle?

Yes, I made a serial connection over USB on /dev/ttyACM0 at 115200bps. If a program is running, you need to press Ctrl-C to stop the program and then any key to enter the REPL. Ctrl-D reloads.

Not sure how but the UICR.REGOUT0 got cleared and the board became bricked at 1.8V (I did not erase all). I ended up just using a J-Link with nrfjprog to erase and re-flash. It was straight forward, but I was hoping to find an easy solution for people without J-Links. CircuitPython runs very well on...

Looking at the Insufficient Resources error, I found this: https://devzone.nordicsemi.com/f/nordic-q-a/22207/ftu-ota-failed Thanks. I was trying to replace the bootloader with the CircuitPython bootloader. I guess you can only do it with a hardware programmer. I'm trying to get OpenOCD working with...

I've flashed the nrf52840 using DFU, but not with MicroPython. I've been working on some Zigbee software for my work project. The process I use is to create a package using nrfutil: nrfutil pkg generate --debug-mode --hw-version 52 --sd-req 0x00 --application nrf52840_xxaa.hex dfu.zip and then also...

Has anyone been able to flash the nRF52840-dongle (PCA10059) without a J-link? Looks like it might be possible using DFU over a serial USB connection with nrfutil. I’d also be interested if anyone has been able to do it with OpenOCD using a programmer or DFU.

The Adafruit Feather nRF52840 Express should be released soon. They will probably include a CircuitPython tutorial.

(CircuitPython dev here.) At this point its pretty different, we started with glennrub and tralamazzas nrf5 PR (https://github.com/micropython/micropython/pull/3137) into MicroPython and a bunch of work has been done on it since then including non-vendor support for USB (available outside of Circui...