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-rw-r--r--keyboards/ergotaco/matrix.c331
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diff --git a/keyboards/ergotaco/matrix.c b/keyboards/ergotaco/matrix.c
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--- a/keyboards/ergotaco/matrix.c
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-/*
-
-Copyright 2013 Oleg Kostyuk <cub.uanic@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 "matrix.h"
-#include <stdint.h>
-#include <stdbool.h>
-#include <avr/io.h>
-#include "wait.h"
-#include "action_layer.h"
-#include "print.h"
-#include "debug.h"
-#include "util.h"
-#include QMK_KEYBOARD_H
-
-#ifndef DEBOUNCE
-# define DEBOUNCE 5
-#endif
-
-// ATmega pin defs
-#define ROW1 (1<<5)
-#define COL6 (1<<0)
-#define COL7 (1<<1)
-#define COL8 (1<<2)
-#define COL9 (1<<3)
-#define COL10 (1<<2)
-#define COL11 (1<<3)
-
-
-// bit masks
-#define BMASK (COL7 | COL8 | COL9 | COL6)
-#define DMASK (COL10 | COL11)
-#define FMASK (ROW1)
-
-/* matrix state(1:on, 0:off) */
-static matrix_row_t matrix[MATRIX_ROWS];
-/*
- * matrix state(1:on, 0:off)
- * contains the raw values without debounce filtering of the last read cycle.
- */
-static matrix_row_t raw_matrix[MATRIX_ROWS];
-
-// Debouncing: store for each key the number of scans until it's eligible to
-// change. When scanning the matrix, ignore any changes in keys that have
-// already changed in the last DEBOUNCE scans.
-static uint8_t debounce_matrix[MATRIX_ROWS * MATRIX_COLS];
-
-static matrix_row_t read_cols(uint8_t row);
-static void init_cols(void);
-static void unselect_rows(void);
-static void select_row(uint8_t row);
-
-static uint8_t mcp23018_reset_loop;
-// static uint16_t mcp23018_reset_loop;
-
-__attribute__ ((weak))
-void matrix_init_user(void) {}
-
-__attribute__ ((weak))
-void matrix_scan_user(void) {}
-
-__attribute__ ((weak))
-void matrix_init_kb(void) {
- matrix_init_user();
-}
-
-__attribute__ ((weak))
-void matrix_scan_kb(void) {
- matrix_scan_user();
-}
-
-inline
-uint8_t matrix_rows(void)
-{
- return MATRIX_ROWS;
-}
-
-inline
-uint8_t matrix_cols(void)
-{
- return MATRIX_COLS;
-}
-
-
-void matrix_init(void)
-{
- // initialize row and col
- mcp23018_status = init_mcp23018();
- unselect_rows();
- init_cols();
-
- // initialize matrix state: all keys off
- for (uint8_t i=0; i < MATRIX_ROWS; i++) {
- matrix[i] = 0;
- raw_matrix[i] = 0;
- for (uint8_t j=0; j < MATRIX_COLS; ++j) {
- debounce_matrix[i * MATRIX_COLS + j] = 0;
- }
- }
-
- matrix_init_quantum();
-}
-
-void matrix_power_up(void) {
- mcp23018_status = init_mcp23018();
-
- unselect_rows();
- init_cols();
-
- // initialize matrix state: all keys off
- for (uint8_t i=0; i < MATRIX_ROWS; i++) {
- matrix[i] = 0;
- }
-}
-
-// Returns a matrix_row_t whose bits are set if the corresponding key should be
-// eligible to change in this scan.
-matrix_row_t debounce_mask(matrix_row_t rawcols, uint8_t row) {
- matrix_row_t result = 0;
- matrix_row_t change = rawcols ^ raw_matrix[row];
- raw_matrix[row] = rawcols;
- for (uint8_t i = 0; i < MATRIX_COLS; ++i) {
- if (debounce_matrix[row * MATRIX_COLS + i]) {
- --debounce_matrix[row * MATRIX_COLS + i];
- } else {
- result |= (1 << i);
- }
- if (change & (1 << i)) {
- debounce_matrix[row * MATRIX_COLS + i] = DEBOUNCE;
- }
- }
- return result;
-}
-
-matrix_row_t debounce_read_cols(uint8_t row) {
- // Read the row without debouncing filtering and store it for later usage.
- matrix_row_t cols = read_cols(row);
- // Get the Debounce mask.
- matrix_row_t mask = debounce_mask(cols, row);
- // debounce the row and return the result.
- return (cols & mask) | (matrix[row] & ~mask);;
-}
-
-uint8_t matrix_scan(void)
-{
- // Then the keyboard
- if (mcp23018_status) { // if there was an error
- if (++mcp23018_reset_loop == 0) {
- // if (++mcp23018_reset_loop >= 1300) {
- // since mcp23018_reset_loop is 8 bit - we'll try to reset once in 255 matrix scans
- // this will be approx bit more frequent than once per second
- print("trying to reset mcp23018\n");
- mcp23018_status = init_mcp23018();
- if (mcp23018_status) {
- print("left side not responding\n");
- } else {
- print("left side attached\n");
- }
- }
- }
-
- for (uint8_t i = 0; i < MATRIX_ROWS_PER_SIDE; i++) {
- select_row(i);
- // and select on left hand
- select_row(i + MATRIX_ROWS_PER_SIDE);
- // we don't need a 30us delay anymore, because selecting a
- // left-hand row requires more than 30us for i2c.
-
- // grab cols from left hand
- matrix[i] = debounce_read_cols(i);
- // grab cols from right hand
- matrix[i + MATRIX_ROWS_PER_SIDE] = debounce_read_cols(i + MATRIX_ROWS_PER_SIDE);
-
- unselect_rows();
- }
-
- matrix_scan_quantum();
-
-#ifdef DEBUG_MATRIX
- for (uint8_t c = 0; c < MATRIX_COLS; c++)
- for (uint8_t r = 0; r < MATRIX_ROWS; r++)
- if (matrix_is_on(r, c)) xprintf("r:%d c:%d \n", r, c);
-#endif
-
- return 1;
-}
-
-bool matrix_is_modified(void) // deprecated and evidently not called.
-{
- 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++) {
- print_hex8(row); print(": ");
- print_bin_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;
-}
-
-// Remember this means ROWS
-static void init_cols(void)
-{
- // init on mcp23018
- // not needed, already done as part of init_mcp23018()
-
- // Input with pull-up(DDR:0, PORT:1)
- DDRF &= ~FMASK;
- PORTF |= FMASK;
-}
-
-static matrix_row_t read_cols(uint8_t row)
-{
- if (row < 6) {
- if (mcp23018_status) { // if there was an error
- return 0;
- } else {
- uint8_t data = 0;
- mcp23018_status = i2c_start(I2C_ADDR_WRITE, ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(GPIOB, ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_start(I2C_ADDR_READ, ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_read_nack(ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status < 0) goto out;
- data = (~((uint8_t)mcp23018_status) >> 2) & 0x01 ;
- mcp23018_status = I2C_STATUS_SUCCESS;
- out:
- i2c_stop();
-
-#ifdef DEBUG_MATRIX
- if (data != 0x00) xprintf("I2C: %d\n", data);
-#endif
- return data;
- }
- } else {
- // Read using bitmask
- return ~((((PINF & ROW1) >> 5)) & 0x1);
- }
-}
-
-// Row pin configuration
-static void unselect_rows(void)
-{
- // no need to unselect on mcp23018, because the select step sets all
- // the other row bits high, and it's not changing to a different
- // direction
- // Hi-Z(DDR:0, PORT:0) to unselect
- DDRB &= ~BMASK;
- PORTB &= ~BMASK;
- DDRD &= ~DMASK;
- PORTD &= ~DMASK;
-}
-
-static void select_row(uint8_t row)
-{
- if (row < 6) {
- // select on mcp23018
- if (mcp23018_status) { // do nothing on error
- // Read using bitmask
- } else { // set active row low : 0 // set other rows hi-Z : 1
- mcp23018_status = i2c_start(I2C_ADDR_WRITE, ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(GPIOA, ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(~(1<<row), ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- out:
- i2c_stop();
- }
- } else {
- // Output low(DDR:1, PORT:0) to select
- switch (row) {
- case 6:
- DDRB |= COL6;
- PORTB &= ~COL6;
- break;
- case 7:
- DDRB |= COL7;
- PORTB &= ~COL7;
- break;
- case 8:
- DDRB |= COL8;
- PORTB &= ~COL8;
- break;
- case 9:
- DDRB |= COL9;
- PORTB &= ~COL9;
- break;
- case 10:
- DDRD |= COL10;
- PORTD &= ~COL10;
- break;
- case 11:
- DDRD |= COL11;
- PORTD &= ~COL11;
- break;
- }
- }
-}