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-rw-r--r--keyboards/wasdat/matrix.c484
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diff --git a/keyboards/wasdat/matrix.c b/keyboards/wasdat/matrix.c
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+/*
+Copyright 2012-2018 Jun Wako, Jack Humbert, Yiancar
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+#include <stdint.h>
+#include <stdbool.h>
+#include "wait.h"
+#include "print.h"
+#include "debug.h"
+#include "util.h"
+#include "matrix.h"
+#include "debounce.h"
+#include "quantum.h"
+
+#if (MATRIX_COLS <= 8)
+# define print_matrix_header() print("\nr/c 01234567\n")
+# define print_matrix_row(row) print_bin_reverse8(matrix_get_row(row))
+# define matrix_bitpop(i) bitpop(matrix[i])
+# define ROW_SHIFTER ((uint8_t)1)
+#elif (MATRIX_COLS <= 16)
+# define print_matrix_header() print("\nr/c 0123456789ABCDEF\n")
+# define print_matrix_row(row) print_bin_reverse16(matrix_get_row(row))
+# define matrix_bitpop(i) bitpop16(matrix[i])
+# define ROW_SHIFTER ((uint16_t)1)
+#elif (MATRIX_COLS <= 32)
+# define print_matrix_header() print("\nr/c 0123456789ABCDEF0123456789ABCDEF\n")
+# define print_matrix_row(row) print_bin_reverse32(matrix_get_row(row))
+# define matrix_bitpop(i) bitpop32(matrix[i])
+# define ROW_SHIFTER ((uint32_t)1)
+#endif
+
+#ifdef MATRIX_MASKED
+ extern const matrix_row_t matrix_mask[];
+#endif
+
+#ifdef DIRECT_PINS
+static pin_t direct_pins[MATRIX_ROWS][MATRIX_COLS] = DIRECT_PINS;
+#elif (DIODE_DIRECTION == ROW2COL) || (DIODE_DIRECTION == COL2ROW)
+static const pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
+//static const pin_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
+#endif
+
+/* matrix state(1:on, 0:off) */
+static matrix_row_t raw_matrix[MATRIX_ROWS]; //raw values
+static matrix_row_t matrix[MATRIX_ROWS]; //debounced values
+
+__attribute__ ((weak))
+void matrix_init_quantum(void) {
+ matrix_init_kb();
+}
+
+__attribute__ ((weak))
+void matrix_scan_quantum(void) {
+ matrix_scan_kb();
+}
+
+__attribute__ ((weak))
+void matrix_init_kb(void) {
+ matrix_init_user();
+}
+
+__attribute__ ((weak))
+void matrix_scan_kb(void) {
+ matrix_scan_user();
+}
+
+__attribute__ ((weak))
+void matrix_init_user(void) {
+}
+
+__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;
+}
+
+//Deprecated.
+bool matrix_is_modified(void)
+{
+ if (debounce_active()) return false;
+ return true;
+}
+
+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)
+{
+ // Matrix mask lets you disable switches in the returned matrix data. For example, if you have a
+ // switch blocker installed and the switch is always pressed.
+#ifdef MATRIX_MASKED
+ return matrix[row] & matrix_mask[row];
+#else
+ return matrix[row];
+#endif
+}
+
+void matrix_print(void)
+{
+ print_matrix_header();
+
+ for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
+ phex(row); print(": ");
+ print_matrix_row(row);
+ print("\n");
+ }
+}
+
+uint8_t matrix_key_count(void)
+{
+ uint8_t count = 0;
+ for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+ count += matrix_bitpop(i);
+ }
+ return count;
+}
+
+
+#ifdef DIRECT_PINS
+
+static void init_pins(void) {
+ for (int row = 0; row < MATRIX_ROWS; row++) {
+ for (int col = 0; col < MATRIX_COLS; col++) {
+ pin_t pin = direct_pins[row][col];
+ if (pin != NO_PIN) {
+ setPinInputHigh(pin);
+ }
+ }
+ }
+}
+
+static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
+ matrix_row_t last_row_value = current_matrix[current_row];
+ current_matrix[current_row] = 0;
+
+ for (uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
+ pin_t pin = direct_pins[current_row][col_index];
+ if (pin != NO_PIN) {
+ current_matrix[current_row] |= readPin(pin) ? 0 : (ROW_SHIFTER << col_index);
+ }
+ }
+
+ return (last_row_value != current_matrix[current_row]);
+}
+
+#elif (DIODE_DIRECTION == COL2ROW)
+
+static void select_row(uint8_t row)
+{
+ setPinOutput(row_pins[row]);
+ writePinLow(row_pins[row]);
+}
+
+static void unselect_row(uint8_t row)
+{
+ setPinInputHigh(row_pins[row]);
+}
+
+static void unselect_rows(void)
+{
+ for(uint8_t x = 0; x < MATRIX_ROWS; x++) {
+ setPinInput(row_pins[x]);
+ }
+}
+
+static void init_pins(void) {
+ unselect_rows();
+ for (uint8_t x = 0; x < MATRIX_COLS; x++) {
+ setPinInputHigh(col_pins[x]);
+ }
+}
+
+static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row)
+{
+ // Store last value of row prior to reading
+ matrix_row_t last_row_value = current_matrix[current_row];
+
+ // Clear data in matrix row
+ current_matrix[current_row] = 0;
+
+ // Select row and wait for row selecton to stabilize
+ select_row(current_row);
+ wait_us(30);
+
+ // For each col...
+ for(uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
+
+ // Select the col pin to read (active low)
+ uint8_t pin_state = readPin(col_pins[col_index]);
+
+ // Populate the matrix row with the state of the col pin
+ current_matrix[current_row] |= pin_state ? 0 : (ROW_SHIFTER << col_index);
+ }
+
+ // Unselect row
+ unselect_row(current_row);
+
+ return (last_row_value != current_matrix[current_row]);
+}
+
+#elif (DIODE_DIRECTION == ROW2COL)
+
+/* Cols 0 - 15
+ * col 0: C7
+ * col 1: B6
+ * col 2: C6
+ * col 3: B4
+ * col 4: B5
+ * col 5: D7
+ * These columns use a 74HC237D 3 to 8 bit demultiplexer.
+ * A0 A1 A2
+ * col / pin: PD2 PD1 PD0
+ * 6: 1 1 1
+ * 7: 0 1 1
+ * 8: 1 0 1
+ * 9: 0 0 1
+ * 10: 1 1 0
+ * 11: 0 1 0
+ * 12: 1 0 0
+ * col 13: D3
+ * col 14: B7
+ * col 15: B3
+ */
+static void select_col(uint8_t col)
+{
+ switch (col) {
+ case 0:
+ writePinLow(C7);
+ break;
+ case 1:
+ writePinLow(B6);
+ break;
+ case 2:
+ writePinLow(C6);
+ break;
+ case 3:
+ writePinLow(B4);
+ break;
+ case 4:
+ writePinLow(B5);
+ break;
+ case 5:
+ writePinLow(D7);
+ break;
+ case 6:
+ writePinHigh(D0);
+ writePinHigh(D1);
+ writePinHigh(D2);
+ break;
+ case 7:
+ writePinHigh(D0);
+ writePinHigh(D1);
+ break;
+ case 8:
+ writePinHigh(D0);
+ writePinHigh(D2);
+ break;
+ case 9:
+ writePinHigh(D0);
+ break;
+ case 10:
+ writePinHigh(D1);
+ writePinHigh(D2);
+ break;
+ case 11:
+ writePinHigh(D1);
+ break;
+ case 12:
+ writePinHigh(D2);
+ break;
+ case 13:
+ writePinLow(D3);
+ break;
+ case 14:
+ writePinLow(B7);
+ break;
+ case 15:
+ writePinLow(B3);
+ break;
+ }
+}
+
+static void unselect_col(uint8_t col)
+{
+ switch (col) {
+ case 0:
+ writePinHigh(C7);
+ break;
+ case 1:
+ writePinHigh(B6);
+ break;
+ case 2:
+ writePinHigh(C6);
+ break;
+ case 3:
+ writePinHigh(B4);
+ break;
+ case 4:
+ writePinHigh(B5);
+ break;
+ case 5:
+ writePinHigh(D7);
+ break;
+ case 6:
+ writePinLow(D0);
+ writePinLow(D1);
+ writePinLow(D2);
+ break;
+ case 7:
+ writePinLow(D0);
+ writePinLow(D1);
+ break;
+ case 8:
+ writePinLow(D0);
+ writePinLow(D2);
+ break;
+ case 9:
+ writePinLow(D0);
+ break;
+ case 10:
+ writePinLow(D1);
+ writePinLow(D2);
+ break;
+ case 11:
+ writePinLow(D1);
+ break;
+ case 12:
+ writePinLow(D2);
+ break;
+ case 13:
+ writePinHigh(D3);
+ break;
+ case 14:
+ writePinHigh(B7);
+ break;
+ case 15:
+ writePinHigh(B3);
+ break;
+ }
+}
+
+static void unselect_cols(void)
+{
+ //Native
+ setPinOutput(D3);
+ setPinOutput(D7);
+ writePinHigh(D3);
+ writePinHigh(D7);
+
+ setPinOutput(C6);
+ setPinOutput(C7);
+ writePinHigh(C6);
+ writePinHigh(C7);
+
+ setPinOutput(B3);
+ setPinOutput(B4);
+ setPinOutput(B5);
+ setPinOutput(B6);
+ setPinOutput(B7);
+ writePinHigh(B3);
+ writePinHigh(B4);
+ writePinHigh(B5);
+ writePinHigh(B6);
+ writePinHigh(B7);
+
+ //Demultiplexer
+ setPinOutput(D0);
+ setPinOutput(D1);
+ setPinOutput(D2);
+ writePinLow(D0);
+ writePinLow(D1);
+ writePinLow(D2);
+}
+
+static void init_pins(void) {
+ unselect_cols();
+ for (uint8_t x = 0; x < MATRIX_ROWS; x++) {
+ setPinInputHigh(row_pins[x]);
+ }
+}
+
+static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col)
+{
+ bool matrix_changed = false;
+
+ // Select col and wait for col selecton to stabilize
+ select_col(current_col);
+ wait_us(30);
+
+ // For each row...
+ for(uint8_t row_index = 0; row_index < MATRIX_ROWS; row_index++)
+ {
+
+ // Store last value of row prior to reading
+ matrix_row_t last_row_value = current_matrix[row_index];
+
+ // Check row pin state
+ if (readPin(row_pins[row_index]) == 0)
+ {
+ // Pin LO, set col bit
+ current_matrix[row_index] |= (ROW_SHIFTER << current_col);
+ }
+ else
+ {
+ // Pin HI, clear col bit
+ current_matrix[row_index] &= ~(ROW_SHIFTER << current_col);
+ }
+
+ // Determine if the matrix changed state
+ if ((last_row_value != current_matrix[row_index]) && !(matrix_changed))
+ {
+ matrix_changed = true;
+ }
+ }
+
+ // Unselect col
+ unselect_col(current_col);
+
+ return matrix_changed;
+}
+
+#endif
+
+void matrix_init(void) {
+
+ // initialize key pins
+ init_pins();
+
+ // initialize matrix state: all keys off
+ for (uint8_t i=0; i < MATRIX_ROWS; i++) {
+ raw_matrix[i] = 0;
+ matrix[i] = 0;
+ }
+
+ debounce_init(MATRIX_ROWS);
+
+ matrix_init_quantum();
+}
+
+uint8_t matrix_scan(void)
+{
+ bool changed = false;
+
+#if defined(DIRECT_PINS) || (DIODE_DIRECTION == COL2ROW)
+ // Set row, read cols
+ for (uint8_t current_row = 0; current_row < MATRIX_ROWS; current_row++) {
+ changed |= read_cols_on_row(raw_matrix, current_row);
+ }
+#elif (DIODE_DIRECTION == ROW2COL)
+ // Set col, read rows
+ for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
+ changed |= read_rows_on_col(raw_matrix, current_col);
+ }
+#endif
+
+ debounce(raw_matrix, matrix, MATRIX_ROWS, changed);
+
+ matrix_scan_quantum();
+ return 1;
+}
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