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-rw-r--r--keyboards/lightsaver/matrix.c284
1 files changed, 284 insertions, 0 deletions
diff --git a/keyboards/lightsaver/matrix.c b/keyboards/lightsaver/matrix.c
new file mode 100644
index 0000000000..cb7b38fd4b
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+++ b/keyboards/lightsaver/matrix.c
@@ -0,0 +1,284 @@
+/*
+Copyright 2016-2017 Ralf Schmitt <ralf@bunkertor.net> Rasmus Schults <rasmusx@gmail.com>
+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 <util/delay.h>
+#include <avr/io.h>
+#include <stdio.h>
+#include "matrix.h"
+#include "util.h"
+#include "print.h"
+#include "debug.h"
+
+static uint8_t debouncing = DEBOUNCING_DELAY;
+
+/* matrix state(1:on, 0:off) */
+static matrix_row_t matrix[MATRIX_ROWS];
+static matrix_row_t matrix_debouncing[MATRIX_ROWS];
+
+static uint8_t read_rows(void);
+static uint8_t read_fwkey(void);
+static void init_rows(void);
+static void unselect_cols(void);
+static void select_col(uint8_t col);
+
+__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) {
+}
+
+void matrix_init(void) {
+ DDRD |= 0b11010000;
+ PORTD &= ~0b01010000;
+ DDRB |= 0b00011111;
+ PORTB &= ~0b00001110;
+ PORTB |= 0b00010001;
+ DDRE |= 0b01000000;
+ PORTE &= ~0b01000000;
+
+ unselect_cols();
+ init_rows();
+
+ for (uint8_t i=0; i < MATRIX_ROWS; i++) {
+ matrix[i] = 0;
+ matrix_debouncing[i] = 0;
+ }
+
+ matrix_init_quantum();
+}
+
+uint8_t matrix_scan(void) {
+ for (uint8_t col = 0; col < MATRIX_COLS; col++) {
+ select_col(col);
+ _delay_us(3);
+
+ uint8_t rows = read_rows();
+ if(col == 0) {
+ rows |= read_fwkey();
+ }
+ for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
+ bool prev_bit = matrix_debouncing[row] & ((matrix_row_t)1<<col);
+ bool curr_bit = rows & (1<<row);
+ if (prev_bit != curr_bit) {
+ matrix_debouncing[row] ^= ((matrix_row_t)1<<col);
+ debouncing = DEBOUNCING_DELAY;
+ }
+ }
+ unselect_cols();
+ }
+
+ if (debouncing) {
+ if (--debouncing) {
+ _delay_ms(1);
+ } else {
+ for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+ matrix[i] = matrix_debouncing[i];
+ }
+ }
+ }
+
+ matrix_scan_quantum();
+ return 1;
+}
+
+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++) {
+ xprintf("%02X: %032lb\n", row, bitrev32(matrix_get_row(row)));
+ }
+}
+
+/* Row pin configuration
+ * row: 0 1 2 3 4 5
+ * pin: PB7 PD0 PD1 PD2 PD3 PD5
+ *
+ * Esc uses its own pin PE2
+ */
+static void init_rows(void) {
+ DDRB &= ~0b10000000;
+ PORTB &= ~0b10000000;
+
+ DDRD &= ~0b00101111;
+ PORTD &= ~0b00101111;
+
+ DDRE &= ~0b00000100;
+ PORTE |= 0b00000100;
+}
+
+static uint8_t read_rows() {
+ return (PINB&(1<<7) ? (1<<0) : 0) |
+ (PIND&(1<<0) ? (1<<1) : 0) |
+ (PIND&(1<<1) ? (1<<2) : 0) |
+ (PIND&(1<<2) ? (1<<3) : 0) |
+ (PIND&(1<<3) ? (1<<4) : 0) |
+ (PIND&(1<<5) ? (1<<5) : 0);
+}
+
+static uint8_t read_fwkey(void)
+{
+ return PINE&(1<<2) ? 0 : (1<<0);
+}
+
+/* Columns 0 - 15
+ * These columns uses two 74HC237D 3 to 8 bit demultiplexers.
+ * col / pin: PC6 PB6 PF0 PF1 PC7
+ * 0: 1 0 0 0 0
+ * 1: 1 0 1 0 0
+ * 2: 1 0 0 1 0
+ * 3: 1 0 1 1 0
+ * 4: 1 0 0 0 1
+ * 5: 1 0 1 0 1
+ * 6: 1 0 0 1 1
+ * 7: 1 0 1 1 1
+ * 8: 0 1 0 0 0
+ * 9: 0 1 1 0 0
+ * 10: 0 1 0 1 0
+ * 11: 0 1 1 1 0
+ * 12: 0 1 0 0 1
+ * 13: 0 1 1 0 1
+ * 14: 0 1 0 1 1
+ * 15: 0 1 1 1 1
+ *
+ * col: 16
+ * pin: PB5
+ *
+ * col: 17
+ * pin: PB4
+ *
+ * col: 18
+ * pin: PD7
+ */
+static void unselect_cols(void) {
+ DDRB |= 0b01110000;
+ PORTB &= ~0b01110000;
+
+ DDRC |= (1<<6) | (1<<7);
+ PORTC &= ~((1<<6) | (1<<7));
+
+ DDRF |= (1<<0) | (1<<1);
+ PORTF &= ~((1<<0) | (1<<1));
+
+ DDRD |= (1<<7);
+ PORTD &= ~(1<<7);
+}
+
+static void select_col(uint8_t col) {
+ switch (col) {
+ case 0:
+ PORTC |= (1<<6);
+ break;
+ case 1:
+ PORTC |= (1<<6);
+ PORTF |= (1<<0);
+ break;
+ case 2:
+ PORTC |= (1<<6);
+ PORTF |= (1<<1);
+ break;
+ case 3:
+ PORTC |= (1<<6);
+ PORTF |= (1<<0) | (1<<1);
+ break;
+ case 4:
+ PORTC |= (1<<6);
+ PORTC |= (1<<7);
+ break;
+ case 5:
+ PORTC |= (1<<6);
+ PORTF |= (1<<0);
+ PORTC |= (1<<7);
+ break;
+ case 6:
+ PORTC |= (1<<6);
+ PORTF |= (1<<1);
+ PORTC |= (1<<7);
+ break;
+ case 7:
+ PORTC |= (1<<6);
+ PORTF |= (1<<0) | (1<<1);
+ PORTC |= (1<<7);
+ break;
+ case 8:
+ PORTB |= (1<<6);
+ break;
+ case 9:
+ PORTB |= (1<<6);
+ PORTF |= (1<<0);
+ break;
+ case 10:
+ PORTB |= (1<<6);
+ PORTF |= (1<<1);
+ break;
+ case 11:
+ PORTB |= (1<<6);
+ PORTF |= (1<<0) | (1<<1);
+ break;
+ case 12:
+ PORTB |= (1<<6);
+ PORTC |= (1<<7);
+ break;
+ case 13:
+ PORTB |= (1<<6);
+ PORTF |= (1<<0);
+ PORTC |= (1<<7);
+ break;
+ case 14:
+ PORTB |= (1<<6);
+ PORTF |= (1<<1);
+ PORTC |= (1<<7);
+ break;
+ case 15:
+ PORTB |= (1<<6);
+ PORTF |= (1<<0) | (1<<1);
+ PORTC |= (1<<7);
+ break;
+ case 16:
+ PORTB |= (1<<5);
+ break;
+ case 17:
+ PORTB |= (1<<4);
+ break;
+ case 18:
+ PORTD |= (1<<7);
+ break;
+ }
+}
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