241 lines
6.4 KiB
C
241 lines
6.4 KiB
C
|
/* 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 "betalupi_voyager.h"
|
||
|
|
#include "is31fl3731.h"
|
||
|
|
#include "i2c_master.h"
|
||
|
|
|
||
|
|
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 VOYAGER_I2C_TIMEOUT
|
||
|
|
# define VOYAGER_I2C_TIMEOUT 100
|
||
|
|
#endif
|
||
|
|
|
||
|
|
extern bool mcp23018_leds[2];
|
||
|
|
extern bool is_launching;
|
||
|
|
|
||
|
|
bool mcp23018_initd = false;
|
||
|
|
// extern bool IS31FL3731_initd;
|
||
|
|
static uint8_t mcp23018_reset_loop;
|
||
|
|
// static uint8_t is31fl3731_reset_loop;
|
||
|
|
|
||
|
|
uint8_t mcp23018_tx[3];
|
||
|
|
uint8_t mcp23018_rx[1];
|
||
|
|
|
||
|
|
void mcp23018_init(void) {
|
||
|
|
i2c_init();
|
||
|
|
|
||
|
|
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, VOYAGER_I2C_TIMEOUT)) {
|
||
|
|
mcp23018_tx[0] = 0x0C; // GPPUA
|
||
|
|
mcp23018_tx[1] = 0b10000000; // A is not pulled-up
|
||
|
|
mcp23018_tx[2] = 0b11111111; // B is pulled-up
|
||
|
|
wait_ms(5);
|
||
|
|
|
||
|
|
if (MSG_OK == i2c_transmit(MCP23018_DEFAULT_ADDRESS << 1, mcp23018_tx, 3, VOYAGER_I2C_TIMEOUT)) {
|
||
|
|
wait_ms(5);
|
||
|
|
mcp23018_initd = is_launching = true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
bool io_expander_ready(void) {
|
||
|
|
uint8_t tx[1] = {0x13};
|
||
|
|
if (MSG_OK == i2c_readReg(MCP23018_DEFAULT_ADDRESS << 1, tx[0], &tx[0], 1, VOYAGER_I2C_TIMEOUT)) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
void matrix_init_custom(void) {
|
||
|
|
// 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();
|
||
|
|
}
|
||
|
|
|
||
|
|
bool matrix_scan_custom(matrix_row_t current_matrix[]) {
|
||
|
|
bool changed = false;
|
||
|
|
// Attempt to reset the mcp23018 if it's not initialized
|
||
|
|
if (!mcp23018_initd) {
|
||
|
|
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.
|
||
|
|
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();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Scanning left and right side of the keyboard for key presses.
|
||
|
|
// Left side is scanned by reading the gpio pins directly, right side is scanned by reading the mcp23018 registers.
|
||
|
|
|
||
|
|
matrix_row_t data = 0;
|
||
|
|
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;
|
||
|
|
case 6:
|
||
|
|
break; // Left hand has 6 rows
|
||
|
|
}
|
||
|
|
|
||
|
|
// Selecting the row on the right side of the keyboard.
|
||
|
|
if (mcp23018_initd) {
|
||
|
|
// 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, VOYAGER_I2C_TIMEOUT)) {
|
||
|
|
mcp23018_initd = false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// Reading the left side of the keyboard.
|
||
|
|
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 = ((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;
|
||
|
|
case 6:
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (current_matrix[row] != data) {
|
||
|
|
current_matrix[row] = data;
|
||
|
|
changed = true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Reading the right side of the keyboard.
|
||
|
|
if (mcp23018_initd) {
|
||
|
|
for (uint16_t i = 0; i < IO_EXPANDER_OP_DELAY; i++) {
|
||
|
|
__asm__("nop");
|
||
|
|
}
|
||
|
|
|
||
|
|
mcp23018_tx[0] = 0x13; // GPIOB
|
||
|
|
if (MSG_OK != i2c_readReg(MCP23018_DEFAULT_ADDRESS << 1, mcp23018_tx[0], &mcp23018_rx[0], 1, VOYAGER_I2C_TIMEOUT)) {
|
||
|
|
mcp23018_initd = false;
|
||
|
|
}
|
||
|
|
data = ~(mcp23018_rx[0] & 0b00111111);
|
||
|
|
for (uint16_t i = 0; i < IO_EXPANDER_OP_DELAY; i++) {
|
||
|
|
__asm__("nop");
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
data = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (raw_matrix_right[row] != data) {
|
||
|
|
raw_matrix_right[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 (!temp_launching) {
|
||
|
|
STATUS_LED_1(false);
|
||
|
|
STATUS_LED_2(false);
|
||
|
|
STATUS_LED_3(false);
|
||
|
|
STATUS_LED_4(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;
|
||
|
|
}
|