You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
95 lines
2.4 KiB
95 lines
2.4 KiB
/* Copyright 2018 James Laird-Wah
|
|
*
|
|
* 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 <quantum.h>
|
|
#include <i2c_master.h>
|
|
#include <string.h>
|
|
#include "model01.h"
|
|
|
|
/* If no key events have occurred, the scanners will time out on reads.
|
|
* So we don't want to be too permissive here. */
|
|
#define I2C_TIMEOUT 10
|
|
|
|
static matrix_row_t rows[MATRIX_ROWS];
|
|
#define ROWS_PER_HAND (MATRIX_ROWS / 2)
|
|
|
|
inline
|
|
uint8_t matrix_rows(void) {
|
|
return MATRIX_ROWS;
|
|
}
|
|
|
|
inline
|
|
uint8_t matrix_cols(void) {
|
|
return MATRIX_COLS;
|
|
}
|
|
|
|
static int i2c_read_hand(int hand) {
|
|
uint8_t buf[5];
|
|
i2c_status_t ret = i2c_receive(I2C_ADDR(hand), buf, sizeof(buf), I2C_TIMEOUT);
|
|
if (ret != I2C_STATUS_SUCCESS)
|
|
return 1;
|
|
|
|
if (buf[0] != TWI_REPLY_KEYDATA)
|
|
return 2;
|
|
|
|
int start_row = hand ? ROWS_PER_HAND : 0;
|
|
uint8_t *out = &rows[start_row];
|
|
memcpy(out, &buf[1], 4);
|
|
return 0;
|
|
}
|
|
|
|
static int i2c_set_keyscan_interval(int hand, int delay) {
|
|
uint8_t buf[] = {TWI_CMD_KEYSCAN_INTERVAL, delay};
|
|
i2c_status_t ret = i2c_transmit(I2C_ADDR(hand), buf, sizeof(buf), I2C_TIMEOUT);
|
|
return ret;
|
|
}
|
|
|
|
void matrix_init(void) {
|
|
/* Ensure scanner power is on - else right hand will not work */
|
|
DDRC |= _BV(7);
|
|
PORTC |= _BV(7);
|
|
|
|
i2c_init();
|
|
i2c_set_keyscan_interval(LEFT, 2);
|
|
i2c_set_keyscan_interval(RIGHT, 2);
|
|
memset(rows, 0, sizeof(rows));
|
|
|
|
matrix_init_quantum();
|
|
}
|
|
|
|
uint8_t matrix_scan(void) {
|
|
uint8_t ret = 0;
|
|
ret |= i2c_read_hand(LEFT);
|
|
ret |= i2c_read_hand(RIGHT);
|
|
matrix_scan_quantum();
|
|
return ret;
|
|
}
|
|
|
|
inline
|
|
matrix_row_t matrix_get_row(uint8_t row) {
|
|
return rows[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");
|
|
}
|
|
}
|
|
|
|
/* vim: set ts=2 sw=2 et: */
|