/* Copyright 2020 ZSA Technology Labs, Inc <@zsa> * Copyright 2020 Jack Humbert * Copyright 2020 Christopher Courtney, aka Drashna Jael're (@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 . */ #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 = ((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; } } // 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