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keychron_qmk_firmware/keyboards/moonlander/matrix.c

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/* Copyright 2020 ZSA Technology Labs, Inc <@zsa>
* Copyright 2020 Jack Humbert <jack.humb@gmail.com>
* Copyright 2020 Christopher Courtney <drashna@live.com> (@drashna)
*
* 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 <stdint.h>
#include <stdbool.h>
#include <string.h>
#include <hal.h>
#include "timer.h"
#include "wait.h"
#include "print.h"
#include "matrix.h"
#include "action.h"
#include "keycode.h"
#include <string.h>
#include "moonlander.h"
#include "i2c_master.h"
#include "debounce.h"
/*
#define MATRIX_ROW_PINS { B10, B11, B12, B13, B14, B15 } outputs
#define MATRIX_COL_PINS { A0, A1, A2, A3, A6, A7, B0 } inputs
*/
/* 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 matrix_debouncing_right[MATRIX_COLS];
static bool debouncing = false;
static uint16_t debouncing_time = 0;
static bool debouncing_right = false;
static uint16_t debouncing_time_right = 0;
#define ROWS_PER_HAND (MATRIX_ROWS / 2)
#ifndef MATRIX_IO_DELAY
# define MATRIX_IO_DELAY 20
#endif
extern bool mcp23018_leds[3];
extern bool is_launching;
__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(); }
__attribute__((weak)) void matrix_io_delay(void) { wait_us(MATRIX_IO_DELAY); }
bool mcp23018_initd = false;
static uint8_t mcp23018_reset_loop;
uint8_t mcp23018_tx[3];
uint8_t mcp23018_rx[1];
void mcp23018_init(void) {
i2c_init();
// #define MCP23_ROW_PINS { GPB5, GBP4, GBP3, GBP2, GBP1, GBP0 } outputs
// #define MCP23_COL_PINS { GPA0, GBA1, GBA2, GBA3, GBA4, GBA5, GBA6 } inputs
mcp23018_tx[0] = 0x00; // IODIRA
mcp23018_tx[1] = 0b00000000; // A is output
mcp23018_tx[2] = 0b00111111; // B is inputs
if (MSG_OK != i2c_transmit(MCP23018_DEFAULT_ADDRESS << 1, mcp23018_tx, 3, I2C_TIMEOUT)) {
dprintf("error hori\n");
} else {
mcp23018_tx[0] = 0x0C; // GPPUA
mcp23018_tx[1] = 0b10000000; // A is not pulled-up
mcp23018_tx[2] = 0b11111111; // B is pulled-up
if (MSG_OK != i2c_transmit(MCP23018_DEFAULT_ADDRESS << 1, mcp23018_tx, 3, I2C_TIMEOUT)) {
dprintf("error hori\n");
} else {
mcp23018_initd = is_launching = true;
}
}
}
void matrix_init(void) {
dprintf("matrix init\n");
// debug_matrix = true;
// outputs
setPinOutput(B10);
setPinOutput(B11);
setPinOutput(B12);
setPinOutput(B13);
setPinOutput(B14);
setPinOutput(B15);
// inputs
setPinInputLow(A0);
setPinInputLow(A1);
setPinInputLow(A2);
setPinInputLow(A3);
setPinInputLow(A6);
setPinInputLow(A7);
setPinInputLow(B0);
memset(matrix, 0, MATRIX_ROWS * sizeof(matrix_row_t));
memset(matrix_debouncing, 0, MATRIX_ROWS * sizeof(matrix_row_t));
memset(matrix_debouncing_right, 0, MATRIX_COLS * sizeof(matrix_row_t));
mcp23018_init();
matrix_init_quantum();
}
uint8_t matrix_scan(void) {
bool changed = false;
matrix_row_t data = 0;
// actual matrix
for (uint8_t row = 0; row < ROWS_PER_HAND; row++) {
// strobe row
switch (row) {
case 0: writePinHigh(B10); break;
case 1: writePinHigh(B11); break;
case 2: writePinHigh(B12); break;
case 3: writePinHigh(B13); break;
case 4: writePinHigh(B14); break;
case 5: writePinHigh(B15); break;
}
// need wait to settle pin state
matrix_io_delay();
// read col data
data = (
(readPin(A0) << 0 ) |
(readPin(A1) << 1 ) |
(readPin(A2) << 2 ) |
(readPin(A3) << 3 ) |
(readPin(A6) << 4 ) |
(readPin(A7) << 5 ) |
(readPin(B0) << 6 )
);
// unstrobe row
switch (row) {
case 0: writePinLow(B10); break;
case 1: writePinLow(B11); break;
case 2: writePinLow(B12); break;
case 3: writePinLow(B13); break;
case 4: writePinLow(B14); break;
case 5: writePinLow(B15); break;
}
if (matrix_debouncing[row] != data) {
matrix_debouncing[row] = data;
debouncing = true;
debouncing_time = timer_read();
changed = true;
}
}
for (uint8_t row = 0; row <= ROWS_PER_HAND; row++) {
// right side
if (!mcp23018_initd) {
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_init();
if (!mcp23018_initd) {
print("left side not responding\n");
} else {
print("left side attached\n");
#ifdef RGB_MATRIX_ENABLE
rgb_matrix_init();
#endif
}
}
}
// #define MCP23_ROW_PINS { GPB5, GBP4, GBP3, GBP2, GBP1, GBP0 } outputs
// #define MCP23_COL_PINS { GPA0, GBA1, GBA2, GBA3, GBA4, GBA5, GBA6 } inputs
// select row
mcp23018_tx[0] = 0x12; // GPIOA
mcp23018_tx[1] = (0b01111111 & ~(1 << (row))) | ((uint8_t)!mcp23018_leds[2] << 7); // activate row
mcp23018_tx[2] = ((uint8_t)!mcp23018_leds[1] << 6) | ((uint8_t)!mcp23018_leds[0] << 7); // activate row
if (MSG_OK != i2c_transmit(MCP23018_DEFAULT_ADDRESS << 1, mcp23018_tx, 3, I2C_TIMEOUT)) {
dprintf("error hori\n");
mcp23018_initd = false;
}
// read col
mcp23018_tx[0] = 0x13; // GPIOB
if (MSG_OK != i2c_readReg(MCP23018_DEFAULT_ADDRESS << 1, mcp23018_tx[0], &mcp23018_rx[0], 1, I2C_TIMEOUT)) {
dprintf("error vert\n");
mcp23018_initd = false;
}
data = ~(mcp23018_rx[0] & 0b00111111);
// data = 0x01;
if (matrix_debouncing_right[row] != data) {
matrix_debouncing_right[row] = data;
debouncing_right = true;
debouncing_time_right = timer_read();
changed = true;
}
}
if (debouncing && timer_elapsed(debouncing_time) > DEBOUNCE) {
for (int row = 0; row < ROWS_PER_HAND; row++) {
matrix[row] = matrix_debouncing[row];
}
debouncing = false;
}
if (debouncing_right && timer_elapsed(debouncing_time_right) > DEBOUNCE && mcp23018_initd) {
for (int row = 0; row < ROWS_PER_HAND; row++) {
matrix[11 - row] = 0;
for (int col = 0; col < MATRIX_COLS; col++) {
matrix[11 - row] |= ((matrix_debouncing_right[6 - col] & (1 << row) ? 1 : 0) << col);
}
}
debouncing_right = false;
}
matrix_scan_quantum();
return (uint8_t)changed;
}
bool matrix_is_on(uint8_t row, uint8_t col) { return (matrix[row] & (1 << col)); }
matrix_row_t matrix_get_row(uint8_t row) { return matrix[row]; }
void matrix_print(void) {
dprintf("\nr/c 01234567\n");
for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
dprintf("%X0: ", row);
matrix_row_t data = matrix_get_row(row);
for (int col = 0; col < MATRIX_COLS; col++) {
if (data & (1 << col))
dprintf("1");
else
dprintf("0");
}
dprintf("\n");
}
}
// DO NOT REMOVE
// Needed for proper wake/sleep
void matrix_power_up(void) {
bool temp_launching = is_launching;
// outputs
setPinOutput(B10);
setPinOutput(B11);
setPinOutput(B12);
setPinOutput(B13);
setPinOutput(B14);
setPinOutput(B15);
// inputs
setPinInputLow(A0);
setPinInputLow(A1);
setPinInputLow(A2);
setPinInputLow(A3);
setPinInputLow(A6);
setPinInputLow(A7);
setPinInputLow(B0);
mcp23018_init();
is_launching = temp_launching;
if (!is_launching) {
ML_LED_1(false);
ML_LED_2(false);
ML_LED_3(false);
ML_LED_4(false);
ML_LED_5(false);
ML_LED_6(false);
}
// initialize matrix state: all keys off
for (uint8_t i=0; i < MATRIX_ROWS; i++) {
matrix[i] = 0;
}
}
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