diff options
Diffstat (limited to 'keyboards/ergodox_ez')
| -rw-r--r-- | keyboards/ergodox_ez/matrix.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/keyboards/ergodox_ez/matrix.c b/keyboards/ergodox_ez/matrix.c index 6d976f143c..6ce3d7216e 100644 --- a/keyboards/ergodox_ez/matrix.c +++ b/keyboards/ergodox_ez/matrix.c @@ -216,10 +216,8 @@ static matrix_row_t read_cols(uint8_t row) { return 0; } else { uint8_t data = 0; - mcp23018_status = i2c_start(I2C_ADDR_WRITE, ERGODOX_EZ_I2C_TIMEOUT); - if (mcp23018_status) goto out; - mcp23018_status = i2c_write(GPIOB, ERGODOX_EZ_I2C_TIMEOUT); - if (mcp23018_status) goto out; + // reading GPIOB (column port) since in mcp23018's sequential mode + // it is addressed directly after writing to GPIOA in select_row() mcp23018_status = i2c_start(I2C_ADDR_READ, ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out; mcp23018_status = i2c_read_nack(ERGODOX_EZ_I2C_TIMEOUT); |