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qmk_firmware/keyboards/zsa/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, aka Drashna Jael're (@drashna) <drashna@live.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 "moonlander.h"
#include "i2c_master.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) */
extern matrix_row_t matrix[MATRIX_ROWS]; // debounced values
extern matrix_row_t raw_matrix[MATRIX_ROWS]; // raw values
static matrix_row_t raw_matrix_right[MATRIX_COLS];
#define ROWS_PER_HAND (MATRIX_ROWS / 2)
#ifndef MOONLANDER_I2C_TIMEOUT
# define MOONLANDER_I2C_TIMEOUT 100
#endif
extern bool mcp23018_leds[3];
extern bool is_launching;
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, MOONLANDER_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, MOONLANDER_I2C_TIMEOUT)) {
dprintf("error hori\n");
} else {
mcp23018_initd = is_launching = true;
}
}
}
void matrix_init_custom(void) {
dprintf("matrix init\n");
// debug_matrix = true;
// outputs
gpio_set_pin_output(B10);
gpio_set_pin_output(B11);
gpio_set_pin_output(B12);
gpio_set_pin_output(B13);
gpio_set_pin_output(B14);
gpio_set_pin_output(B15);
// inputs
gpio_set_pin_input_low(A0);
gpio_set_pin_input_low(A1);
gpio_set_pin_input_low(A2);
gpio_set_pin_input_low(A3);
gpio_set_pin_input_low(A6);
gpio_set_pin_input_low(A7);
gpio_set_pin_input_low(B0);
mcp23018_init();
}
bool matrix_scan_custom(matrix_row_t current_matrix[]) {
bool changed = false;
// Try to re-init 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("right side not responding\n");
} else {
print("right side attached\n");
#ifdef RGB_MATRIX_ENABLE
rgb_matrix_init();
#endif
}
}
}
matrix_row_t data = 0;
// actual matrix
for (uint8_t row = 0; row <= ROWS_PER_HAND; row++) {
// strobe row
switch (row) {
case 0: gpio_write_pin_high(B10); break;
case 1: gpio_write_pin_high(B11); break;
case 2: gpio_write_pin_high(B12); break;
case 3: gpio_write_pin_high(B13); break;
case 4: gpio_write_pin_high(B14); break;
case 5: gpio_write_pin_high(B15); break;
case 6: break; // Left hand has 6 rows
}
// right side
if (mcp23018_initd) {
// #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, MOONLANDER_I2C_TIMEOUT)) {
dprintf("error hori\n");
mcp23018_initd = false;
}
// read col
mcp23018_tx[0] = 0x13; // GPIOB
if (MSG_OK != i2c_read_register(MCP23018_DEFAULT_ADDRESS << 1, mcp23018_tx[0], &mcp23018_rx[0], 1, MOONLANDER_I2C_TIMEOUT)) {
dprintf("error vert\n");
mcp23018_initd = false;
}
data = ~(mcp23018_rx[0] & 0b00111111);
// data = 0x01;
} else {
data = 0;
}
if (raw_matrix_right[row] != data) {
raw_matrix_right[row] = data;
changed = true;
}
// left side
if (row < ROWS_PER_HAND) {
// i2c comm incur enough wait time
if (!mcp23018_initd) {
// need wait to settle pin state
matrix_io_delay();
}
// read col data
data = (
(gpio_read_pin(A0) << 0 ) |
(gpio_read_pin(A1) << 1 ) |
(gpio_read_pin(A2) << 2 ) |
(gpio_read_pin(A3) << 3 ) |
(gpio_read_pin(A6) << 4 ) |
(gpio_read_pin(A7) << 5 ) |
(gpio_read_pin(B0) << 6 )
);
// unstrobe row
switch (row) {
case 0: gpio_write_pin_low(B10); break;
case 1: gpio_write_pin_low(B11); break;
case 2: gpio_write_pin_low(B12); break;
case 3: gpio_write_pin_low(B13); break;
case 4: gpio_write_pin_low(B14); break;
case 5: gpio_write_pin_low(B15); break;
case 6: break;
}
if (current_matrix[row] != data) {
current_matrix[row] = data;
changed = true;
}
}
}
for (uint8_t row = 0; row < ROWS_PER_HAND; row++) {
current_matrix[11 - row] = 0;
for (uint8_t col = 0; col < MATRIX_COLS; col++) {
current_matrix[11 - row] |= ((raw_matrix_right[6 - col] & (1 << row) ? 1 : 0) << col);
}
}
return changed;
}
// DO NOT REMOVE
// Needed for proper wake/sleep
void matrix_power_up(void) {
bool temp_launching = is_launching;
matrix_init_custom();
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;
}
}
bool is_transport_connected(void) {
return mcp23018_initd;
}
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