diff options
Diffstat (limited to 'keyboards/moon')
| -rw-r--r-- | keyboards/moon/matrix.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/keyboards/moon/matrix.c b/keyboards/moon/matrix.c index 24b4d49560..0615b60ad3 100644 --- a/keyboards/moon/matrix.c +++ b/keyboards/moon/matrix.c @@ -158,10 +158,12 @@ static void select_row(uint8_t row) { } static uint16_t read_cols(void) { - uint16_t state_1 = pca9555_readPins(IC2, PCA9555_PORT0); - uint16_t state_2 = pca9555_readPins(IC2, PCA9555_PORT1); + uint8_t state_1 = 0; + uint8_t state_2 = 0; + pca9555_readPins(IC2, PCA9555_PORT0, &state_1); + pca9555_readPins(IC2, PCA9555_PORT1, &state_2); - uint16_t state = ((state_1 & PORT0_COLS_MASK) << 3) | ((state_2 & PORT1_COLS_MASK)); + uint16_t state = (((uint16_t)state_1 & PORT0_COLS_MASK) << 3) | (((uint16_t)state_2 & PORT1_COLS_MASK)); // A low pin indicates an active column return (~state) & COLS_MASK; |