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-rw-r--r--keyboards/ergodox_ez/matrix.c42
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();
}