Ondrej Jirman
3b723583e7
firmware: Make interrupt signal shorter (10us)
...
This is long enough, comparable to 100kHz I2C speeds.
2021-08-02 10:12:48 +02:00
Ondrej Jirman
2fbc2e057e
firmware: Implement scanning block
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This allows to disable the keyboard. The firmware will never scan
for keys pressed in this mode, and it will powerdown the MCU most of the
time.
2021-08-02 10:12:48 +02:00
Ondrej Jirman
41418cdc14
firmware: Jump to stock firmware sooner after powerup
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Signed-off-by: Ondrej Jirman <megous@megous.com>
2021-08-02 10:12:48 +02:00
Ondrej Jirman
176a2da7e2
firmware: Implement USB enabled/disable control via I2C
2021-08-02 10:05:43 +02:00
Ondrej Jirman
134b4b6a8b
firmware: Move more of the USB shutdown control to usb_enable/usb_disable
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- make sure USB resources are re-enabled before jumping to bootloader
- make sure all USB resources are disabled prior to jumping to user fw
2021-08-02 10:03:48 +02:00
Ondrej Jirman
6a5fe581b9
Implement flashing over I2C and user/stock firmware support
...
I2C register layout changed a bit to make various operations easier
to implement in FW and for the user.
Flashing/debugging tools now share more code. Firmware is now more
configurable (it's now possible to compile-out various features).
Self-testing for column-shorts is implemented.
Firmware is optimized for low power consumption.
2021-06-28 15:09:47 +02:00
Ondrej Jirman
04ca071b09
Fixup/document I2C
2021-06-19 02:51:23 +02:00
Ondrej Jirman
fbfa245ad4
Allow to use debug printing from interrupt handlers
2021-06-19 02:50:34 +02:00
Ondrej Jirman
2725248532
Add USB stack for easier printf() based debugging of the firmware
2021-06-18 19:43:11 +02:00
Ondrej Jirman
c8d8eef090
Fix key release change detection in polling mode
2021-06-18 18:28:56 +02:00
Ondrej Jirman
b9b02a5e73
Update some comments
2021-06-16 14:44:18 +02:00
Ondrej Jirman
bca8c47f46
Implement polled mode and key bitmap change signalling via external interrupt
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- this firmware consumes about 4-5 mA (can be probably made lower)
2021-06-16 14:09:25 +02:00
Ondrej Jirman
e59f647d83
Allow to switch to bootloader mode via FN+PINE+F
2021-06-15 09:21:31 +02:00
Ondrej Jirman
d3c45f58a4
Initial commit
2021-06-14 00:10:49 +02:00
