36 lines
1.3 KiB
Markdown
36 lines
1.3 KiB
Markdown
## GNAP! keyboard firmware
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======================
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GNAP! dual matrix, dual controller. Per key LED control, reactive lighting.
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Dual Pro Micro's. One running TMK, the other running an Arduino sketch driving the LEDs. Pro Micro's are connected to each other via hardware serial UART.
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Pinout
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Rows D1, D0, D4, C6
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Cols D7, E6, B4, B5, B6, B2, B3, B1, F7, F6, F5, F4
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keymap_gnap.c contains functions to send bytes to the LED controller. The Arduino code interprets these to change modes or brightness.
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//GNAP keymap functions
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void gnaplight_step(void) {
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serial_send(101);
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}
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void gnaplight_toggle(void) {
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serial_send(100);
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}
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\tmk_core\common\keyboard.c was modified to send the row/column of the key being pressed encoded as as single byte over the serial link to the LED controller.
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#ifdef GNAP_ENABLE
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//send single byte with value of row column
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serial_send((r*16)+c);
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#endif
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The example Arduino sketch [LED_FastGPIO.ino](LED_FastGPIO.ino) uses the fastGPIO and TimerOne libraries. These can be installed with the Library manager.
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[FastGPIO](https://github.com/pololu/fastgpio-arduino)
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[TimerOne](https://www.pjrc.com/teensy/td_libs_TimerOne.html) |