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-rw-r--r--keyboards/ergodox/ez/matrix.c394
1 files changed, 0 insertions, 394 deletions
diff --git a/keyboards/ergodox/ez/matrix.c b/keyboards/ergodox/ez/matrix.c
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index 21b60a542e..0000000000
--- a/keyboards/ergodox/ez/matrix.c
+++ /dev/null
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-/*
-
-Note for ErgoDox EZ customizers: Here be dragons!
-This is not a file you want to be messing with.
-All of the interesting stuff for you is under keymaps/ :)
-Love, Erez
-
-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/>.
-*/
-
-/*
- * scan matrix
- */
-#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 "matrix.h"
-#include "ez.h"
-#include "i2cmaster.h"
-#ifdef DEBUG_MATRIX_SCAN_RATE
-#include "timer.h"
-#endif
-
-/*
- * This constant define not debouncing time in msecs, but amount of matrix
- * scan loops which should be made to get stable debounced results.
- *
- * On Ergodox matrix scan rate is relatively low, because of slow I2C.
- * Now it's only 317 scans/second, or about 3.15 msec/scan.
- * According to Cherry specs, debouncing time is 5 msec.
- *
- * And so, there is no sense to have DEBOUNCE higher than 2.
- */
-
-#ifndef DEBOUNCE
-# define DEBOUNCE 5
-#endif
-
-/* matrix state(1:on, 0:off) */
-static matrix_row_t 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;
-
-#ifdef DEBUG_MATRIX_SCAN_RATE
-uint32_t matrix_timer;
-uint32_t matrix_scan_count;
-#endif
-
-
-__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;
- for (uint8_t j=0; j < MATRIX_COLS; ++j) {
- debounce_matrix[i * MATRIX_COLS + j] = 0;
- }
- }
-
-#ifdef DEBUG_MATRIX_SCAN_RATE
- matrix_timer = timer_read32();
- matrix_scan_count = 0;
-#endif
-
- 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;
- }
-
-#ifdef DEBUG_MATRIX_SCAN_RATE
- matrix_timer = timer_read32();
- matrix_scan_count = 0;
-#endif
-}
-
-// 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(uint8_t row) {
- matrix_row_t result = 0;
- for (uint8_t j=0; j < MATRIX_COLS; ++j) {
- if (debounce_matrix[row * MATRIX_COLS + j]) {
- --debounce_matrix[row * MATRIX_COLS + j];
- } else {
- result |= (1 << j);
- }
- }
- return result;
-}
-
-// Report changed keys in the given row. Resets the debounce countdowns
-// corresponding to each set bit in 'change' to DEBOUNCE.
-void debounce_report(matrix_row_t change, uint8_t row) {
- for (uint8_t i = 0; i < MATRIX_COLS; ++i) {
- if (change & (1 << i)) {
- debounce_matrix[row * MATRIX_COLS + i] = DEBOUNCE;
- }
- }
-}
-
-uint8_t matrix_scan(void)
-{
- if (mcp23018_status) { // if there was an error
- if (++mcp23018_reset_loop == 0) {
- // 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");
- ergodox_blink_all_leds();
- }
- }
- }
-
-#ifdef DEBUG_MATRIX_SCAN_RATE
- matrix_scan_count++;
-
- uint32_t timer_now = timer_read32();
- if (TIMER_DIFF_32(timer_now, matrix_timer)>1000) {
- print("matrix scan frequency: ");
- pdec(matrix_scan_count);
- print("\n");
-
- matrix_timer = timer_now;
- matrix_scan_count = 0;
- }
-#endif
-
- for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
- select_row(i);
- wait_us(30); // without this wait read unstable value.
- matrix_row_t mask = debounce_mask(i);
- matrix_row_t cols = (read_cols(i) & mask) | (matrix[i] & ~mask);
- debounce_report(cols ^ matrix[i], i);
- matrix[i] = cols;
-
- unselect_rows();
- }
-
- matrix_scan_quantum();
-
- 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++) {
- 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;
-}
-
-/* Column pin configuration
- *
- * Teensy
- * col: 0 1 2 3 4 5
- * pin: F0 F1 F4 F5 F6 F7
- *
- * MCP23018
- * col: 0 1 2 3 4 5
- * pin: B5 B4 B3 B2 B1 B0
- */
-static void init_cols(void)
-{
- // init on mcp23018
- // not needed, already done as part of init_mcp23018()
-
- // init on teensy
- // Input with pull-up(DDR:0, PORT:1)
- DDRF &= ~(1<<7 | 1<<6 | 1<<5 | 1<<4 | 1<<1 | 1<<0);
- PORTF |= (1<<7 | 1<<6 | 1<<5 | 1<<4 | 1<<1 | 1<<0);
-}
-
-static matrix_row_t read_cols(uint8_t row)
-{
- if (row < 7) {
- if (mcp23018_status) { // if there was an error
- return 0;
- } else {
- uint8_t data = 0;
- mcp23018_status = i2c_start(I2C_ADDR_WRITE); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(GPIOB); if (mcp23018_status) goto out;
- mcp23018_status = i2c_start(I2C_ADDR_READ); if (mcp23018_status) goto out;
- data = i2c_readNak();
- data = ~data;
- out:
- i2c_stop();
- return data;
- }
- } else {
- // read from teensy
- return
- (PINF&(1<<0) ? 0 : (1<<0)) |
- (PINF&(1<<1) ? 0 : (1<<1)) |
- (PINF&(1<<4) ? 0 : (1<<2)) |
- (PINF&(1<<5) ? 0 : (1<<3)) |
- (PINF&(1<<6) ? 0 : (1<<4)) |
- (PINF&(1<<7) ? 0 : (1<<5)) ;
- }
-}
-
-/* Row pin configuration
- *
- * Teensy
- * row: 7 8 9 10 11 12 13
- * pin: B0 B1 B2 B3 D2 D3 C6
- *
- * MCP23018
- * row: 0 1 2 3 4 5 6
- * pin: A0 A1 A2 A3 A4 A5 A6
- */
-static void unselect_rows(void)
-{
- // unselect on mcp23018
- if (mcp23018_status) { // if there was an error
- // do nothing
- } else {
- // set all rows hi-Z : 1
- mcp23018_status = i2c_start(I2C_ADDR_WRITE); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(GPIOA); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write( 0xFF
- & ~(0<<7)
- ); if (mcp23018_status) goto out;
- out:
- i2c_stop();
- }
-
- // unselect on teensy
- // Hi-Z(DDR:0, PORT:0) to unselect
- DDRB &= ~(1<<0 | 1<<1 | 1<<2 | 1<<3);
- PORTB &= ~(1<<0 | 1<<1 | 1<<2 | 1<<3);
- DDRD &= ~(1<<2 | 1<<3);
- PORTD &= ~(1<<2 | 1<<3);
- DDRC &= ~(1<<6);
- PORTC &= ~(1<<6);
-}
-
-static void select_row(uint8_t row)
-{
- if (row < 7) {
- // select on mcp23018
- if (mcp23018_status) { // if there was an error
- // do nothing
- } else {
- // set active row low : 0
- // set other rows hi-Z : 1
- mcp23018_status = i2c_start(I2C_ADDR_WRITE); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(GPIOA); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write( 0xFF & ~(1<<row)
- & ~(0<<7)
- ); if (mcp23018_status) goto out;
- out:
- i2c_stop();
- }
- } else {
- // select on teensy
- // Output low(DDR:1, PORT:0) to select
- switch (row) {
- case 7:
- DDRB |= (1<<0);
- PORTB &= ~(1<<0);
- break;
- case 8:
- DDRB |= (1<<1);
- PORTB &= ~(1<<1);
- break;
- case 9:
- DDRB |= (1<<2);
- PORTB &= ~(1<<2);
- break;
- case 10:
- DDRB |= (1<<3);
- PORTB &= ~(1<<3);
- break;
- case 11:
- DDRD |= (1<<2);
- PORTD &= ~(1<<3);
- break;
- case 12:
- DDRD |= (1<<3);
- PORTD &= ~(1<<3);
- break;
- case 13:
- DDRC |= (1<<6);
- PORTC &= ~(1<<6);
- break;
- }
- }
-}
-
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