geekhack

geekhack Community => Keyboards => Topic started by: Quartz64 on Sat, 09 June 2018, 05:01:18

Title: TMK/QMK-based replacement controller for Model M-122
Post by: Quartz64 on Sat, 09 June 2018, 05:01:18

I have an IBM Model M-122 keyboard. The controller was dead, so I desoldered those two FFC connectors and installed them on prototyping PCB with Teensy 3.2 (I did not have experience with ARM-based Teensies, just received one from my friend).
I was able to compile and run Kiibohd on my controller. This keyboard uses 20x8 matrix, and I used Kiibohd's serial console debug to trace the matrix. While it was very useful and easy to setup, I don't like Kiibohd for it's KLL syntax, so I've decided to run QMK or TMK.
Teensy 3.2 is supported in TMK via ChibiOS. I've decided to start with working example — i75 keyboard (https://github.com/di0ib/tmk_keyboard/tree/master/keyboard/i75_TeensyLC) by di0ib, author of "40 percent (http://www.40percent.club/)" blog. I've made all the necessary changes (columns and rows numbers, pins, keymap), here is the result (https://github.com/DmNosachev/m122_tmk). My firmware compiles, I can see a HID device when connecting, hid_listen finds it and displays "Listening", but there is nothing more, no keystrokes.
I have only basic knowledge of C, and I'm too stupid to figure out how to debug TMK. What am I doing wrong?