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qmk_firmware/keyboards/keebio/quefrency/keymaps/bcat/config.h

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#pragma once
/*
* I2C seems to randomly drop keystrokes. Not sure why. It seems a bit like
* https://github.com/qmk/qmk_firmware/issues/5037, but that issue is closed,
* and our problems happen even with underglow disabled.
*
* This issue occurs with multiple TRRS cables of different lengths from
* different companies, so it's most likely not a cable issue. It may be that
* we are running into issues with long I2C runs, in which case stronger
* pull-up resistors might help:
* https://hackaday.com/2017/02/08/taking-the-leap-off-board-an-introduction-to-i2c-over-long-wires/.
* For now, just don't use I2C.
*/
#define USE_SERIAL
/* Use an extra LED on the right side since it's wider on the 65% PCB. */
#undef RGBLED_NUM
#define RGBLED_NUM 17
/* Set up RGB lighting so it works with either side as master. */
#define RGBLED_SPLIT { 8, 9 }