True AL1 Support (#3330)
* Initial port of AL1 Keyboard from Triangle Labs * Change REPLACE WITH YOUR NAME and some readme changes * More readme change to indicate Group Buy Link * Give Triangle Lab credit * remove pins from config.h and rely on matrix.c * Add QMK Configurator support
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keyboards/al1/matrix.c
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184
keyboards/al1/matrix.c
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#include <stdint.h>
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#include <stdbool.h>
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#include <avr/io.h>
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#include <util/delay.h>
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#include "print.h"
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#include "debug.h"
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#include "util.h"
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#include "matrix.h"
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#ifndef DEBOUNCING_DELAY
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# define DEBOUNCING_DELAY 5
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#endif
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static uint8_t debouncing = DEBOUNCING_DELAY;
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static matrix_row_t matrix[MATRIX_ROWS];
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static matrix_row_t matrix_debouncing[MATRIX_ROWS];
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static uint8_t read_rows(void);
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static void init_rows(void);
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static void unselect_cols(void);
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static void select_col(uint8_t col);
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inline uint8_t matrix_rows(void) {
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return MATRIX_ROWS;
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}
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inline uint8_t matrix_cols(void) {
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return MATRIX_COLS;
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}
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void matrix_init(void) {
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// initialize row and col
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unselect_cols();
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init_rows();
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// initialize matrix state: all keys off
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for (uint8_t i=0; i < MATRIX_ROWS; i++) {
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matrix[i] = 0;
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matrix_debouncing[i] = 0;
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}
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matrix_init_quantum();
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}
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uint8_t matrix_scan(void) {
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for (uint8_t col = 0; col < MATRIX_COLS; col++) {
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select_col(col);
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_delay_us(3);
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uint8_t rows = read_rows();
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for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
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bool prev_bit = matrix_debouncing[row] & ((matrix_row_t)1<<col);
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bool curr_bit = rows & (1<<row);
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if (prev_bit != curr_bit) {
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matrix_debouncing[row] ^= ((matrix_row_t)1<<col);
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debouncing = DEBOUNCING_DELAY;
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}
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}
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unselect_cols();
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}
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if (debouncing) {
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if (--debouncing) {
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_delay_ms(1);
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} else {
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for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
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matrix[i] = matrix_debouncing[i];
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}
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}
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}
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matrix_scan_quantum();
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return 1;
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}
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bool matrix_is_modified(void) {
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if (debouncing)
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return false;
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else
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return true;
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}
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inline bool matrix_is_on(uint8_t row, uint8_t col) {
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return (matrix[row] & ((matrix_row_t)1<<col));
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}
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inline matrix_row_t matrix_get_row(uint8_t row) {
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return matrix[row];
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}
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void matrix_print(void) {
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print("\nr/c 0123456789ABCDEF\n");
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for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
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xprintf("%02X: %032lb\n", row, bitrev32(matrix_get_row(row)));
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}
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}
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uint8_t matrix_key_count(void) {
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uint8_t count = 0;
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for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
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count += bitpop32(matrix[i]);
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}
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return count;
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}
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/* Row pin configuration
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*
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* row: 0 1 2 3 4 5
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* pin: C7 B1 B2 C6 B4 B5
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*
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*/
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static void init_rows(void)
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{
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DDRC &= ~0b11000000;
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DDRB &= ~0b00110110;
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PORTC |= 0b11000000;
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PORTB |= 0b00110110;
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}
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static uint8_t read_rows(void) {
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return (PINC&(1<<PC7) ? 0 : (1<<0)) |
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(PINB&(1<<PB1) ? 0 : (1<<1)) |
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(PINB&(1<<PB2) ? 0 : (1<<2)) |
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(PINC&(1<<PC6) ? 0 : (1<<3)) |
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(PINB&(1<<PB4) ? 0 : (1<<4)) |
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(PINB&(1<<PB5) ? 0 : (1<<5));
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}
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/* Row pin configuration
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* pin: D3 D7 D6 D5 D4
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* row: off 0 x x x x
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* 0 1 0 0 0 0
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* 1 1 0 0 0 1
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* 2 1 0 0 1 0
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* 3 1 0 0 1 1
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* 4 1 0 1 0 0
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* 5 1 0 1 0 1
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* 6 1 0 1 1 0
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* 7 1 0 1 1 1
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* 8 1 1 0 0 0
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* 9 1 1 0 0 1
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* 10 1 1 0 1 0
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* 11 1 1 0 1 1
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* 12 1 1 1 0 0
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* 13 1 1 1 0 1
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* 14 1 1 1 1 0
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* 15 1 1 1 1 1
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*/
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static void unselect_cols(void)
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{
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// output high(DDR:1, PORT:1) to unselect
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DDRB |= (1 << PD3);
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PORTB |= (1 << PD3);
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}
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static void select_col(uint8_t col) {
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DDRD |= (1<<PD3 | 1<<PD4 | 1<<PD5 | 1<<PD6 | 1<<PD7);
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PORTD &= ~(1<<PD3);
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if (col & (1<<0)) {
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PORTD |= (1<<PD4);
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}
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else {
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PORTD &= ~(1<<PD4);
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}
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if (col & (1<<1)) {
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PORTD |= (1<<PD5);
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}
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else {
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PORTD &= ~(1<<PD5);
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}
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if (col & (1<<2)) {
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PORTD |= (1<<PD6);
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}
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else {
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PORTD &= ~(1<<PD6);
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}
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if (col & (1<<3)) {
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PORTD |= (1<<PD7);
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}
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else {
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PORTD &= ~(1<<PD7);
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}
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}
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