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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 "mcp23018.h"
#pragma GCC push_options
#pragma GCC optimize("-O3")
/*
#define MATRIX_ROW_PINS { B10, B11, B12, B13, B14, B15 } outputs
#define MATRIX_COL_PINS { A0, A1, A2, A3, A6, A7, B0 } inputs
#define MCP23_ROW_PINS { GPB5, GBP4, GBP3, GBP2, GBP1, GBP0 } outputs
#define MCP23_COL_PINS { GPA0, GBA1, GBA2, GBA3, GBA4, GBA5, GBA6 } 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_ROWS];
#define MCP_ROWS_PER_HAND (MATRIX_ROWS / 2)
extern bool mcp23018_leds[3];
extern bool is_launching;
static uint16_t mcp23018_reset_loop;
uint8_t mcp23018_errors;
bool io_expander_ready(void) {
uint8_t tx;
return mcp23018_read_pins(MCP23018_DEFAULT_ADDRESS, mcp23018_PORTA, &tx);
}
void matrix_init_custom(void) {
// 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(MCP23018_DEFAULT_ADDRESS);
mcp23018_errors += !mcp23018_set_config(MCP23018_DEFAULT_ADDRESS, mcp23018_PORTA, 0b00000000);
mcp23018_errors += !mcp23018_set_config(MCP23018_DEFAULT_ADDRESS, mcp23018_PORTB, 0b00111111);
if (!mcp23018_errors) {
is_launching = true;
}
}
bool matrix_scan_custom(matrix_row_t current_matrix[]) {
bool changed = false;
// Attempt to reset the mcp23018 if it's not initialized
if (mcp23018_errors) {
if (++mcp23018_reset_loop > 0x1FFF) {
if (io_expander_ready()) {
// If we managed to initialize the mcp23018 - we need to reinitialize the matrix / layer state. During an electric discharge the i2c peripherals might be in a weird state. Giving a delay and resetting the MCU allows to recover from this.
wait_ms(200);
mcu_reset();
}
}
}
matrix_row_t data = 0;
// actual matrix
for (uint8_t row = 0; row <= MCP_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
}
// Selecting the row on the right side of the keyboard.
if (!mcp23018_errors) {
// select row
mcp23018_errors += !mcp23018_set_output_all(MCP23018_DEFAULT_ADDRESS, (0b01111111 & ~(1 << (row))) | ((uint8_t)!mcp23018_leds[2] << 7), ((uint8_t)!mcp23018_leds[1] << 6) | ((uint8_t)!mcp23018_leds[0] << 7));
}
// Reading the left side of the keyboard.
if (row < MCP_ROWS_PER_HAND) {
// i2c comm incur enough wait time
if (mcp23018_errors) {
// 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:
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;
}
}
// Reading the right side of the keyboard.
if (!mcp23018_errors) {
uint8_t rx;
mcp23018_errors += !mcp23018_read_pins(MCP23018_DEFAULT_ADDRESS, mcp23018_PORTB, &rx);
data = ~(rx & 0b00111111);
} else {
data = 0;
}
if (raw_matrix_right[row] != data) {
raw_matrix_right[row] = data;
changed = true;
}
}
for (uint8_t row = 0; row < MCP_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 (bool)(mcp23018_errors == 0);
}
#pragma GCC pop_options
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