/* Copyright 2021 Jane Bernhardt * * 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/>. */ #pragma once #include "quantum.h" #include "i2c_master.h" extern i2c_status_t mcp23018_status; #define I2C_TIMEOUT 1000 #define CPU_PRESCALE(n) (CLKPR = 0x80, CLKPR = (n)) #define CPU_16MHz 0x00 // I2C aliases and register addresses (see "mcp23018.md") #define I2C_ADDR 0x20 // 0b0100000 #define I2C_ADDR_WRITE ((I2C_ADDR << 1) | I2C_WRITE) #define I2C_ADDR_READ ((I2C_ADDR << 1) | I2C_READ) #define IODIRA 0x00 // i/o direction register #define IODIRB 0x01 #define GPPUA 0x0C // GPIO pull-up resistor register #define GPIOA 0x12 // general purpose i/o port register (write modifies OLAT) #define OLATA 0x14 // output latch register uint8_t init_mcp23018(void); #define LAYOUT_split_3x5_3( \ L00, L01, L02, L03, L04, R00, R01, R02, R03, R04, \ L10, L11, L12, L13, L14, R10, R11, R12, R13, R14, \ L20, L21, L22, L23, L24, R20, R21, R22, R23, R24, \ L30, L31, L32, R30, R31, R32 \ ) \ { \ {L04, L14, L24, KC_NO}, \ {L03, L13, L23, L32}, \ {L02, L12, L22, L31}, \ {L01, L11, L21, L30}, \ {L00, L10, L20, KC_NO}, \ {R00, R10, R20, KC_NO}, \ {R01, R11, R21, R30}, \ {R02, R12, R22, R31}, \ {R03, R13, R23, R32}, \ {R04, R14, R24, KC_NO}, \ }