esp-idf-chorderfw

A firmware developed for s-chorder.

This is heavily based off of nopnop2002's esp-idf-st7789, with much of the keyboard/mouse bits borrowed from asterics's ESP32 keyboard project. It's a bit of a work in progress. Pull requests welcome!

What does it do?

Features:

• Connects to the compile-time configured wifi upon boot.
• Boots up in "note taking mode," where one can submit notes to the compile-time configured URL using an enter key press.
• Pressing both N and C (near thumb and centre thumb) while hitting R (ring) puts it into BLE keyboard mode. Fairly comprehensive chord set including control characters. chords.md contains a reference.
• Pressing both N and C while hitting M (middle) puts it into BLE Mouse mode. Vim-style movement commands apply.
• Pressing N and C while hitting I (index) puts it into deep sleep. Kind of unnecessary, though—the thing times out and drops into deep sleep after some amount of inactivity.

What should it do?

• Some amount of code cleanup is required. This is a proof of concept which is good enough for my purposes at this point. Push me to do it, if you start using this.
• Mouse mode is annoying. It seems almost natural, but isn't quite. Plus, it doesn't support dragging motions, nor mouse buttons beyond the first one.
• Deep sleep mode isn't perfect. Mine drains its battery over a couple of days. It's supposed to be possible to get down to 5uA, which should be lengthy, but clearly that's not the case yet.
• Vibration/alert mode could be used to warn when one is making a suboptimal chord transition.
  • E.g. going from an A (C+IMR) to an E (IMR) can be done without releasing IMR to cause the A, and then releasing e.g. I while holding MR and re-pressing and releasing I to get the E.
  • The fingers of MR don't need to move during this at all, and if one is going for an S (MRP) afterwards, one can continue this trick.
• Arguably, one should be able to make use of the ESP32's non-BLE bluetooth keyboard mode. They're quite distinct protocols.
• Offline storage for note-taking, for use while away from WiFi? "Keep re-submitting them until 200 is returned?"