349 lines
9.0 KiB
C
349 lines
9.0 KiB
C
/*
|
|
|
|
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 "debounce.h"
|
|
#include QMK_KEYBOARD_H
|
|
#ifdef DEBUG_MATRIX_SCAN_RATE
|
|
# include "timer.h"
|
|
#endif
|
|
|
|
/*
|
|
* This constant define not debouncing time in msecs, assuming eager_pr.
|
|
*
|
|
* 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.
|
|
*
|
|
* However, some switches seem to have higher debouncing requirements, or
|
|
* something else might be wrong. (Also, the scan speed has improved since
|
|
* that comment was written.)
|
|
*/
|
|
|
|
#ifndef DEBOUNCE
|
|
# define DEBOUNCE 5
|
|
#endif
|
|
|
|
/* matrix state(1:on, 0:off) */
|
|
static matrix_row_t raw_matrix[MATRIX_ROWS]; // raw values
|
|
static matrix_row_t matrix[MATRIX_ROWS]; // debounced values
|
|
|
|
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;
|
|
|
|
#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;
|
|
raw_matrix[i] = 0;
|
|
}
|
|
|
|
#ifdef DEBUG_MATRIX_SCAN_RATE
|
|
matrix_timer = timer_read32();
|
|
matrix_scan_count = 0;
|
|
#endif
|
|
debounce_init(MATRIX_ROWS);
|
|
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
|
|
}
|
|
|
|
// Reads and stores a row, returning
|
|
// whether a change occurred.
|
|
static inline bool store_raw_matrix_row(uint8_t index) {
|
|
matrix_row_t temp = read_cols(index);
|
|
if (raw_matrix[index] != temp) {
|
|
raw_matrix[index] = temp;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
uint8_t matrix_scan(void) {
|
|
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");
|
|
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
|
|
|
|
#ifdef LEFT_LEDS
|
|
mcp23018_status = ergodox_left_leds_update();
|
|
#endif // LEFT_LEDS
|
|
bool changed = false;
|
|
for (uint8_t i = 0; i < MATRIX_ROWS_PER_SIDE; i++) {
|
|
// select rows from left and right hands
|
|
uint8_t left_index = i;
|
|
uint8_t right_index = i + MATRIX_ROWS_PER_SIDE;
|
|
select_row(left_index);
|
|
select_row(right_index);
|
|
|
|
// we don't need a 30us delay anymore, because selecting a
|
|
// left-hand row requires more than 30us for i2c.
|
|
|
|
changed |= store_raw_matrix_row(left_index);
|
|
changed |= store_raw_matrix_row(right_index);
|
|
|
|
unselect_rows();
|
|
}
|
|
|
|
debounce(raw_matrix, matrix, MATRIX_ROWS, changed);
|
|
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, 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);
|
|
mcp23018_status = I2C_STATUS_SUCCESS;
|
|
out:
|
|
i2c_stop();
|
|
return data;
|
|
}
|
|
} else {
|
|
/* read from teensy
|
|
* bitmask is 0b11110011, but we want those all
|
|
* in the lower six bits.
|
|
* we'll return 1s for the top two, but that's harmless.
|
|
*/
|
|
|
|
return ~((PINF & 0x03) | ((PINF & 0xF0) >> 2));
|
|
}
|
|
}
|
|
|
|
/* 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) {
|
|
// 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
|
|
|
|
// 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, 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(0xFF & ~(1 << row), ERGODOX_EZ_I2C_TIMEOUT);
|
|
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 << 2);
|
|
break;
|
|
case 12:
|
|
DDRD |= (1 << 3);
|
|
PORTD &= ~(1 << 3);
|
|
break;
|
|
case 13:
|
|
DDRC |= (1 << 6);
|
|
PORTC &= ~(1 << 6);
|
|
break;
|
|
}
|
|
}
|
|
}
|