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- /*
- Copyright 2012 Jun Wako <wakojun@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/>.
- */
-
- /*
- * scan matrix
- */
- #include <stdint.h>
- #include <stdbool.h>
- #include <avr/io.h>
- #include <avr/wdt.h>
- #include <avr/interrupt.h>
- #include <util/delay.h>
- #include "print.h"
- #include "debug.h"
- #include "util.h"
- #include "matrix.h"
- #include "split_util.h"
- #include "quantum.h"
-
- #include "serial.h"
-
- #ifndef DEBOUNCE
- # define DEBOUNCE 5
- #endif
-
- #define ERROR_DISCONNECT_COUNT 5
-
- static uint8_t debouncing = DEBOUNCE;
- static const int ROWS_PER_HAND = MATRIX_ROWS/2;
- static uint8_t error_count = 0;
- uint8_t is_master = 0 ;
-
- static const uint8_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
- static const uint8_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
-
- /* matrix state(1:on, 0:off) */
- static matrix_row_t matrix[MATRIX_ROWS];
- static matrix_row_t matrix_debouncing[MATRIX_ROWS];
-
- static matrix_row_t read_cols(void);
- static void init_cols(void);
- static void unselect_rows(void);
- static void select_row(uint8_t row);
- static uint8_t matrix_master_scan(void);
-
-
- __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;
- }
-
- void matrix_init(void) {
- debug_enable = true;
- debug_matrix = true;
- debug_mouse = true;
- // initialize row and col
- unselect_rows();
- init_cols();
-
- setPinOutput(B0);
- setPinOutput(D5);
-
- #ifdef DISABLE_PROMICRO_LEDs
- writePinHigh(B0);
- writePinHigh(D5);
- #endif
-
- // initialize matrix state: all keys off
- for (uint8_t i=0; i < MATRIX_ROWS; i++) {
- matrix[i] = 0;
- matrix_debouncing[i] = 0;
- }
-
- is_master = has_usb();
-
- matrix_init_quantum();
- }
-
- uint8_t _matrix_scan(void) {
- // Right hand is stored after the left in the matirx so, we need to offset it
- int offset = isLeftHand ? 0 : (ROWS_PER_HAND);
-
- for (uint8_t i = 0; i < ROWS_PER_HAND; i++) {
- select_row(i);
- _delay_us(30); // without this wait read unstable value.
- matrix_row_t cols = read_cols();
- if (matrix_debouncing[i+offset] != cols) {
- matrix_debouncing[i+offset] = cols;
- debouncing = DEBOUNCE;
- }
- unselect_rows();
- }
-
- if (debouncing) {
- if (--debouncing) {
- _delay_ms(1);
- } else {
- for (uint8_t i = 0; i < ROWS_PER_HAND; i++) {
- matrix[i+offset] = matrix_debouncing[i+offset];
- }
- }
- }
-
- return 1;
- }
-
- int serial_transaction(void) {
- int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
- int ret=serial_update_buffers();
- if (ret ) {
- #ifndef DISABLE_PROMICRO_LEDs
- if(ret==2) writePinLow(B0);
- #endif
- return 1;
- }
- #ifndef DISABLE_PROMICRO_LEDs
- writePinHigh(B0);
- #endif
- for (int i = 0; i < ROWS_PER_HAND; ++i) {
- matrix[slaveOffset+i] = serial_slave_buffer[i];
- }
- return 0;
- }
-
- uint8_t matrix_scan(void) {
- if (is_master) {
- matrix_master_scan();
- }else{
- matrix_slave_scan();
-
- int offset = (isLeftHand) ? ROWS_PER_HAND : 0;
-
- for (int i = 0; i < ROWS_PER_HAND; ++i) {
- matrix[offset+i] = serial_master_buffer[i];
- }
-
- matrix_scan_quantum();
- }
- return 1;
- }
-
-
- uint8_t matrix_master_scan(void) {
-
- int ret = _matrix_scan();
-
- int offset = (isLeftHand) ? 0 : ROWS_PER_HAND;
-
- for (int i = 0; i < ROWS_PER_HAND; ++i) {
- serial_master_buffer[i] = matrix[offset+i];
- }
-
- if( serial_transaction() ) {
- #ifndef DISABLE_PROMICRO_LEDs
- // turn on the indicator led when halves are disconnected
- writePinLow(D5);
- #endif
-
- error_count++;
-
- if (error_count > ERROR_DISCONNECT_COUNT) {
- // reset other half if disconnected
- int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
- for (int i = 0; i < ROWS_PER_HAND; ++i) {
- matrix[slaveOffset+i] = 0;
- }
- }
- } else {
- #ifndef DISABLE_PROMICRO_LEDs
- // turn off the indicator led on no error
- writePinHigh(D5);
- #endif
- error_count = 0;
- }
- matrix_scan_quantum();
- return ret;
- }
-
- void matrix_slave_scan(void) {
- _matrix_scan();
-
- int offset = (isLeftHand) ? 0 : ROWS_PER_HAND;
-
- for (int i = 0; i < ROWS_PER_HAND; ++i) {
- serial_slave_buffer[i] = matrix[offset+i];
- }
- }
-
- bool matrix_is_modified(void)
- {
- if (debouncing) 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)
- {
- 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");
- }
- }
-
- uint8_t matrix_key_count(void)
- {
- uint8_t count = 0;
- for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
- count += bitpop16(matrix[i]);
- }
- return count;
- }
-
- static void init_cols(void)
- {
- for(int x = 0; x < MATRIX_COLS; x++) {
- _SFR_IO8((col_pins[x] >> 4) + 1) &= ~_BV(col_pins[x] & 0xF);
- _SFR_IO8((col_pins[x] >> 4) + 2) |= _BV(col_pins[x] & 0xF);
- }
- }
-
- static matrix_row_t read_cols(void)
- {
- matrix_row_t result = 0;
- for(int x = 0; x < MATRIX_COLS; x++) {
- result |= (_SFR_IO8(col_pins[x] >> 4) & _BV(col_pins[x] & 0xF)) ? 0 : (1 << x);
- }
- return result;
- }
-
- static void unselect_rows(void)
- {
- for(int x = 0; x < ROWS_PER_HAND; x++) {
- _SFR_IO8((row_pins[x] >> 4) + 1) &= ~_BV(row_pins[x] & 0xF);
- _SFR_IO8((row_pins[x] >> 4) + 2) |= _BV(row_pins[x] & 0xF);
- }
- }
-
- static void select_row(uint8_t row)
- {
- _SFR_IO8((row_pins[row] >> 4) + 1) |= _BV(row_pins[row] & 0xF);
- _SFR_IO8((row_pins[row] >> 4) + 2) &= ~_BV(row_pins[row] & 0xF);
- }
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