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zmk
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3 Commits

Author SHA1 Message Date
Peter Johanson b5e73204e8 fix(drivers): Avoid build failures for GPIO driver 
* Avoid defining the ZMK GPIO drivers lib if none of the drivers  are
  selected.
 2022-06-05 17:57:35 -04:00
Peter Johanson 6a86cd0547 feat(gpio): Add 595 shift register driver. 
* Use SPI for sending serial data.
* Supports 1-4 shift registers chained together by
  setting `ngios` property appropriately.
 2022-06-03 22:45:04 -04:00
Pete Johanson 647110e5e5 feat(drivers): Add mcp23017 driver based on upstream mcp23s17 one. 
* Upstream Zephyr has in progress driver, so doing this locally here,
  until we can move over to that driver.
 2021-09-14 20:48:28 -04:00