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waspOsSD

This is the micropython app developed by user @rennard in early 2022.
I did not manage to get it working on my PineTime, so it stalled for a while. I am now trying to get OSD working on Pinetime and am trying this Micropython version first. My development notes below....

GJ Notes

  • Cloned https://github.com/wasp-os/wasp-os/ and built it for pinetime.
  • The build-pinetime folder then contained some useful binaries:
    • reloader-mcuboot.zip - flashing this installs the wasp-os bootloader, that includes integral firmware upload (dfu) support.
    • micropython.zip - once the wasp-os bootloader is running, it can be used to flash micropyton.zip to get wasp-os running.
  • I had lots of trouble trying to flash the firmware
    • NRFConnect looks like it is working, then stalls at 100% complete.
    • Gadgetbridge sometimes seems to work and other times does not detect the watch.
    • tools/wasptool has a --dfu mode, but this does not seem to work.
    • Using "tools/ota-dfu/dfu.py -z build-pinetime/micropython.zip -a f8:a1:fd:6b:de:93 --legacy" does seem to work though.
  • Running waspOsSD on the watch
    • wasptool --upload waspOsSD.py works ok
    • wasptool --console starts a python console on the watch.
    • from waspOsSD import OsdApp fails with a memory error.
    • Pre-compile the python code with: ../wasp-os/micropython/mpy-cross/mpy-cross -mno-unicode -march=armv7m waspOsSD.py
    • Then uplaod the pre-compiled file with wasptool --binary --upload waspOsSD.mpy
    • But still got errors when importing. I realised I was not complying with the naming conventions here so re-named to wasp_os_sd.py and the class to WaspOsSdApp
    • ...but running from wasp_os_sd import WaspOsSdApp again crashed on memory error