sp64.h (1420B)
1 /* Copyright 2019 Neil Kettle 2 * 3 * This program is free software: you can redistribute it and/or modify 4 * it under the terms of the GNU General Public License as published by 5 * the Free Software Foundation, either version 2 of the License, or 6 * (at your option) any later version. 7 * 8 * This program is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * GNU General Public License for more details. 12 * 13 * You should have received a copy of the GNU General Public License 14 * along with this program. If not, see <http://www.gnu.org/licenses/>. 15 */ 16 17 #pragma once 18 19 #include "quantum.h" 20 21 #ifdef RIGHT_HALF 22 # include <stdint.h> 23 # include "i2c_master.h" 24 25 // I2C aliases and register addresses (see "mcp23018.md") 26 # define I2C_ADDR (0b0100000<<1) 27 # define IODIRA 0x00 // i/o direction register 28 # define IODIRB 0x01 29 # define GPPUA 0x0C // GPIO pull-up resistor register 30 # define GPPUB 0x0D 31 # define GPIOA 0x12 // general purpose i/o port register (write modifies OLAT) 32 # define GPIOB 0x13 33 # define OLATA 0x14 // output latch register 34 # define OLATB 0x15 35 36 extern i2c_status_t mcp23018_status; 37 # define MCP23018_I2C_TIMEOUT 100 38 39 uint8_t init_mcp23018(void); 40 #endif