diff options
Diffstat (limited to 'keyboards/ergodox_ez/matrix.c')
| -rw-r--r-- | keyboards/ergodox_ez/matrix.c | 14 |
1 files changed, 3 insertions, 11 deletions
diff --git a/keyboards/ergodox_ez/matrix.c b/keyboards/ergodox_ez/matrix.c index f0550e9b8..e10171133 100644 --- a/keyboards/ergodox_ez/matrix.c +++ b/keyboards/ergodox_ez/matrix.c @@ -326,17 +326,9 @@ static matrix_row_t read_cols(uint8_t row) */ static void unselect_rows(void) { - // unselect on mcp23018 - if (mcp23018_status) { // if there was an error - // do nothing - } else { - // set all rows hi-Z : 1 - mcp23018_status = i2c_start(I2C_ADDR_WRITE); if (mcp23018_status) goto out; - mcp23018_status = i2c_write(GPIOA); if (mcp23018_status) goto out; - mcp23018_status = i2c_write(0xFF); if (mcp23018_status) goto out; - out: - i2c_stop(); - } + // no need to unselect on mcp23018, because the select step sets all + // the other row bits high, and it's not changing to a different + // direction // unselect on teensy // Hi-Z(DDR:0, PORT:0) to unselect |