Commits on May 19, 2021

1. matrix: wait for row signal to go HIGH for every row …

   I noticed this discrepancy (last row of the matrix treated differently than the
   others) when optimizing the input latency of my keyboard controller, see also
   https://michael.stapelberg.ch/posts/2021-05-08-keyboard-input-latency-qmk-kinesis/
   
   Before this commit, when tuning the delays I noticed ghost key presses when
   pressing the F2 key, which is on the last row of the keyboard matrix: the
   dead_grave key, which is on the first row of the keyboard matrix, would be
   incorrectly detected as pressed.
   
   After this commit, all keyboard matrix rows are interpreted correctly.
   
   I suspect that my setup is more susceptible to this nuance than others because I
   use GPIO_INPUT_PIN_DELAY=0 and hence don’t have another delay that might mask
   the problem.

   

   stapelberg committed May 19, 2021
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