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-rw-r--r--quantum/matrix.c292
1 files changed, 163 insertions, 129 deletions
diff --git a/quantum/matrix.c b/quantum/matrix.c
index a38c13f15..094917025 100644
--- a/quantum/matrix.c
+++ b/quantum/matrix.c
@@ -26,32 +26,46 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
#include "util.h"
#include "matrix.h"
-#ifdef MATRIX_HAS_GHOST
-# error "The universal matrix.c file cannot be used for this keyboard."
-#endif
+/* Set 0 if debouncing isn't needed */
+/*
+ * This constant define not debouncing time in msecs, but amount of matrix
+ * scan loops which should be made to get stable debounced results.
+ *
+ * On Ergodox matrix scan rate is relatively low, because of slow I2C.
+ * 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.
+ */
#ifndef DEBOUNCING_DELAY
# define DEBOUNCING_DELAY 5
#endif
+static uint8_t debouncing = DEBOUNCING_DELAY;
static const uint8_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
static const uint8_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
-/* matrix state */
-#if DIODE_DIRECTION == COL2ROW
+
+/* matrix state(1:on, 0:off) */
static matrix_row_t matrix[MATRIX_ROWS];
-#else
-static matrix_col_t matrix[MATRIX_COLS];
+static matrix_row_t matrix_debouncing[MATRIX_ROWS];
+
+#if DIODE_DIRECTION == ROW2COL
+ static matrix_row_t matrix_reversed[MATRIX_COLS];
+ static matrix_row_t matrix_reversed_debouncing[MATRIX_COLS];
#endif
-static int8_t debouncing_delay = -1;
-#if DIODE_DIRECTION == COL2ROW
-static void toggle_row(uint8_t row);
-static matrix_row_t read_cols(void);
+#if MATRIX_COLS > 16
+ #define SHIFTER 1UL
#else
-static void toggle_col(uint8_t col);
-static matrix_col_t read_rows(void);
+ #define SHIFTER 1
#endif
+static matrix_row_t read_cols(void);
+static void init_cols(void);
+static void unselect_rows(void);
+static void select_row(uint8_t row);
+
__attribute__ ((weak))
void matrix_init_quantum(void) {
matrix_init_kb();
@@ -80,10 +94,12 @@ __attribute__ ((weak))
void matrix_scan_user(void) {
}
+inline
uint8_t matrix_rows(void) {
return MATRIX_ROWS;
}
+inline
uint8_t matrix_cols(void) {
return MATRIX_COLS;
}
@@ -113,161 +129,179 @@ uint8_t matrix_cols(void) {
// }
void matrix_init(void) {
- /* frees PORTF by setting the JTD bit twice within four cycles */
+ // To use PORTF disable JTAG with writing JTD bit twice within four cycles.
#ifdef __AVR_ATmega32U4__
MCUCR |= _BV(JTD);
MCUCR |= _BV(JTD);
#endif
- /* initializes the I/O pins */
-#if DIODE_DIRECTION == COL2ROW
- for (int8_t r = MATRIX_ROWS - 1; r >= 0; --r) {
- /* DDRxn */
- _SFR_IO8((row_pins[r] >> 4) + 1) |= _BV(row_pins[r] & 0xF);
- toggle_row(r);
- }
- for (int8_t c = MATRIX_COLS - 1; c >= 0; --c) {
- /* PORTxn */
- _SFR_IO8((col_pins[c] >> 4) + 2) |= _BV(col_pins[c] & 0xF);
- }
-#else
- for (int8_t c = MATRIX_COLS - 1; c >= 0; --c) {
- /* DDRxn */
- _SFR_IO8((col_pins[c] >> 4) + 1) |= _BV(col_pins[c] & 0xF);
- toggle_col(c);
- }
- for (int8_t r = MATRIX_ROWS - 1; r >= 0; --r) {
- /* PORTxn */
- _SFR_IO8((row_pins[r] >> 4) + 2) |= _BV(row_pins[r] & 0xF);
+
+ // initialize row and col
+ unselect_rows();
+ init_cols();
+
+ // initialize matrix state: all keys off
+ for (uint8_t i=0; i < MATRIX_ROWS; i++) {
+ matrix[i] = 0;
+ matrix_debouncing[i] = 0;
}
-#endif
+
matrix_init_quantum();
}
+uint8_t matrix_scan(void)
+{
+
#if DIODE_DIRECTION == COL2ROW
-uint8_t matrix_scan(void) {
- static matrix_row_t debouncing_matrix[MATRIX_ROWS];
- for (int8_t r = MATRIX_ROWS - 1; r >= 0; --r) {
- toggle_row(r);
- matrix_row_t state = read_cols();
- if (debouncing_matrix[r] != state) {
- debouncing_matrix[r] = state;
- debouncing_delay = DEBOUNCING_DELAY;
- }
- toggle_row(r);
- }
- if (debouncing_delay >= 0) {
- dprintf("Debouncing delay remaining: %X\n", debouncing_delay);
- --debouncing_delay;
- if (debouncing_delay >= 0) {
- wait_ms(1);
- }
- else {
- for (int8_t r = MATRIX_ROWS - 1; r >= 0; --r) {
- matrix[r] = debouncing_matrix[r];
+ for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+ select_row(i);
+ wait_us(30); // without this wait read unstable value.
+ matrix_row_t cols = read_cols();
+ if (matrix_debouncing[i] != cols) {
+ matrix_debouncing[i] = cols;
+ if (debouncing) {
+ debug("bounce!: "); debug_hex(debouncing); debug("\n");
}
+ debouncing = DEBOUNCING_DELAY;
}
+ unselect_rows();
}
- matrix_scan_quantum();
- return 1;
-}
-
-static void toggle_row(uint8_t row) {
- /* PINxn */
- _SFR_IO8((row_pins[row] >> 4)) = _BV(row_pins[row] & 0xF);
-}
-static matrix_row_t read_cols(void) {
- matrix_row_t state = 0;
- for (int8_t c = MATRIX_COLS - 1; c >= 0; --c) {
- /* PINxn */
- if (!(_SFR_IO8((col_pins[c] >> 4)) & _BV(col_pins[c] & 0xF))) {
- state |= (matrix_row_t)1 << c;
+ if (debouncing) {
+ if (--debouncing) {
+ wait_us(1);
+ } else {
+ for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+ matrix[i] = matrix_debouncing[i];
+ }
}
}
- return state;
-}
-
-matrix_row_t matrix_get_row(uint8_t row) {
- return matrix[row];
-}
-
#else
-uint8_t matrix_scan(void) {
- static matrix_col_t debouncing_matrix[MATRIX_COLS];
- for (int8_t c = MATRIX_COLS - 1; c >= 0; --c) {
- toggle_col(c);
- matrix_col_t state = read_rows();
- if (debouncing_matrix[c] != state) {
- debouncing_matrix[c] = state;
- debouncing_delay = DEBOUNCING_DELAY;
+ for (uint8_t i = 0; i < MATRIX_COLS; i++) {
+ select_row(i);
+ wait_us(30); // without this wait read unstable value.
+ matrix_row_t rows = read_cols();
+ if (matrix_reversed_debouncing[i] != rows) {
+ matrix_reversed_debouncing[i] = rows;
+ if (debouncing) {
+ debug("bounce!: "); debug_hex(debouncing); debug("\n");
+ }
+ debouncing = DEBOUNCING_DELAY;
}
- toggle_col(c);
+ unselect_rows();
}
- if (debouncing_delay >= 0) {
- dprintf("Debouncing delay remaining: %X\n", debouncing_delay);
- --debouncing_delay;
- if (debouncing_delay >= 0) {
- wait_ms(1);
- }
- else {
- for (int8_t c = MATRIX_COLS - 1; c >= 0; --c) {
- matrix[c] = debouncing_matrix[c];
+
+ if (debouncing) {
+ if (--debouncing) {
+ wait_us(1);
+ } else {
+ for (uint8_t i = 0; i < MATRIX_COLS; i++) {
+ matrix_reversed[i] = matrix_reversed_debouncing[i];
}
}
}
+ for (uint8_t y = 0; y < MATRIX_ROWS; y++) {
+ matrix_row_t row = 0;
+ for (uint8_t x = 0; x < MATRIX_COLS; x++) {
+ row |= ((matrix_reversed[x] & (1<<y)) >> y) << x;
+ }
+ matrix[y] = row;
+ }
+#endif
+
matrix_scan_quantum();
+
return 1;
}
-static void toggle_col(uint8_t col) {
- /* PINxn */
- _SFR_IO8((col_pins[col] >> 4)) = _BV(col_pins[col] & 0xF);
+bool matrix_is_modified(void)
+{
+ if (debouncing) return false;
+ return true;
}
-static matrix_col_t read_rows(void) {
- matrix_col_t state = 0;
- for (int8_t r = MATRIX_ROWS - 1; r >= 0; --r) {
- /* PINxn */
- if (!(_SFR_IO8((row_pins[r] >> 4)) & _BV(row_pins[r] & 0xF))) {
- state |= (matrix_col_t)1 << r;
- }
+inline
+bool matrix_is_on(uint8_t row, uint8_t col)
+{
+ return (matrix[row] & ((matrix_row_t)1<col));
+}
+
+inline
+matrix_row_t matrix_get_row(uint8_t row)
+{
+ return matrix[row];
+}
+
+void matrix_print(void)
+{
+ print("\nr/c 0123456789ABCDEF\n");
+ for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
+ phex(row); print(": ");
+ pbin_reverse16(matrix_get_row(row));
+ print("\n");
}
- return state;
}
-matrix_row_t matrix_get_row(uint8_t row) {
- matrix_row_t state = 0;
- matrix_col_t mask = (matrix_col_t)1 << row;
- for (int8_t c = MATRIX_COLS - 1; c >= 0; --c) {
- if (matrix[c] & mask) {
- state |= (matrix_row_t)1 << c;
- }
+uint8_t matrix_key_count(void)
+{
+ uint8_t count = 0;
+ for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+ count += bitpop16(matrix[i]);
}
- return state;
+ return count;
}
+static void init_cols(void)
+{
+#if DIODE_DIRECTION == COL2ROW
+ for(int x = 0; x < MATRIX_COLS; x++) {
+ int pin = col_pins[x];
+#else
+ for(int x = 0; x < MATRIX_ROWS; x++) {
+ int pin = row_pins[x];
#endif
-
-bool matrix_is_modified(void) {
- if (debouncing_delay >= 0) return false;
- return true;
+ _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF);
+ _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF);
+ }
}
-bool matrix_is_on(uint8_t row, uint8_t col) {
- return matrix_get_row(row) & (matrix_row_t)1 << col;
-}
+static matrix_row_t read_cols(void)
+{
+ matrix_row_t result = 0;
-void matrix_print(void) {
- dprintln("Human-readable matrix state:");
- for (uint8_t r = 0; r < MATRIX_ROWS; r++) {
- dprintf("State of row %X: %016b\n", r, bitrev16(matrix_get_row(r)));
+#if DIODE_DIRECTION == COL2ROW
+ for(int x = 0; x < MATRIX_COLS; x++) {
+ int pin = col_pins[x];
+#else
+ for(int x = 0; x < MATRIX_ROWS; x++) {
+ int pin = row_pins[x];
+#endif
+ result |= (_SFR_IO8(pin >> 4) & _BV(pin & 0xF)) ? 0 : (SHIFTER << x);
}
+ return result;
}
-uint8_t matrix_key_count(void) {
- uint8_t count = 0;
- for (int8_t r = MATRIX_ROWS - 1; r >= 0; --r) {
- count += bitpop16(matrix_get_row(r));
+static void unselect_rows(void)
+{
+#if DIODE_DIRECTION == COL2ROW
+ for(int x = 0; x < MATRIX_ROWS; x++) {
+ int pin = row_pins[x];
+#else
+ for(int x = 0; x < MATRIX_COLS; x++) {
+ int pin = col_pins[x];
+#endif
+ _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF);
+ _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF);
}
- return count;
+}
+
+static void select_row(uint8_t row)
+{
+
+#if DIODE_DIRECTION == COL2ROW
+ int pin = row_pins[row];
+#else
+ int pin = col_pins[row];
+#endif
+ _SFR_IO8((pin >> 4) + 1) |= _BV(pin & 0xF);
+ _SFR_IO8((pin >> 4) + 2) &= ~_BV(pin & 0xF);
}
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