diff options
Diffstat (limited to 'keyboards/ergodox_ez/matrix.c')
| -rw-r--r-- | keyboards/ergodox_ez/matrix.c | 42 |
1 files changed, 23 insertions, 19 deletions
diff --git a/keyboards/ergodox_ez/matrix.c b/keyboards/ergodox_ez/matrix.c index 70efb43d8e..f0550e9b88 100644 --- a/keyboards/ergodox_ez/matrix.c +++ b/keyboards/ergodox_ez/matrix.c @@ -47,7 +47,9 @@ along with this program. If not, see <http://www.gnu.org/licenses/>. * Now it's only 317 scans/second, or about 3.15 msec/scan. * According to Cherry specs, debouncing time is 5 msec. * - * And so, there is no sense to have DEBOUNCE higher than 2. + * However, some switches seem to have higher debouncing requirements, or + * something else might be wrong. (Also, the scan speed has improved since + * that comment was written.) */ #ifndef DEBOUNCE @@ -203,16 +205,23 @@ uint8_t matrix_scan(void) #endif #ifdef LEFT_LEDS - mcp23018_status = ergodox_left_leds_update(); + mcp23018_status = ergodox_left_leds_update(); #endif // LEFT_LEDS - for (uint8_t i = 0; i < MATRIX_ROWS; i++) { + for (uint8_t i = 0; i < MATRIX_ROWS_PER_SIDE; i++) { select_row(i); - wait_us(30); // without this wait read unstable value. + // and select on left hand + select_row(i + MATRIX_ROWS_PER_SIDE); + // we don't need a 30us delay anymore, because selecting a + // left-hand row requires more than 30us for i2c. matrix_row_t mask = debounce_mask(i); matrix_row_t cols = (read_cols(i) & mask) | (matrix[i] & ~mask); debounce_report(cols ^ matrix[i], i); matrix[i] = cols; - + // grab cols from right hand + mask = debounce_mask(i + MATRIX_ROWS_PER_SIDE); + cols = (read_cols(i + MATRIX_ROWS_PER_SIDE) & mask) | (matrix[i + MATRIX_ROWS_PER_SIDE] & ~mask); + debounce_report(cols ^ matrix[i + MATRIX_ROWS_PER_SIDE], i + MATRIX_ROWS_PER_SIDE); + matrix[i + MATRIX_ROWS_PER_SIDE] = cols; unselect_rows(); } @@ -295,14 +304,13 @@ static matrix_row_t read_cols(uint8_t row) return data; } } else { - // read from teensy - return - (PINF&(1<<0) ? 0 : (1<<0)) | - (PINF&(1<<1) ? 0 : (1<<1)) | - (PINF&(1<<4) ? 0 : (1<<2)) | - (PINF&(1<<5) ? 0 : (1<<3)) | - (PINF&(1<<6) ? 0 : (1<<4)) | - (PINF&(1<<7) ? 0 : (1<<5)) ; + /* read from teensy + * bitmask is 0b11110011, but we want those all + * in the lower six bits. + * we'll return 1s for the top two, but that's harmless. + */ + + return ~((PINF & 0x03) | ((PINF & 0xF0) >> 2)); } } @@ -325,9 +333,7 @@ static void unselect_rows(void) // 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 - & ~(0<<7) - ); if (mcp23018_status) goto out; + mcp23018_status = i2c_write(0xFF); if (mcp23018_status) goto out; out: i2c_stop(); } @@ -353,9 +359,7 @@ static void select_row(uint8_t row) // set other 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 & ~(1<<row) - & ~(0<<7) - ); if (mcp23018_status) goto out; + mcp23018_status = i2c_write(0xFF & ~(1<<row)); if (mcp23018_status) goto out; out: i2c_stop(); } |