mh
/
qmk_firmware
mirror of https://github.com/qmk/qmk_firmware/


								/*

								 * Copyright 2020 Richard Titmuss (richard.titmuss@gmail.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/>.

								 */


								#pragma once


								#define IODIRA 0x00

								#define IODIRB 0x01

								#define GPPUA 0x0C

								#define GPPUB 0x0D

								#define GPIOA 0x12

								#define GPIOB 0x13


								typedef int16_t mcp23018_status_t;


								void              msp23018_init(void);

								bool              mcp23018_reset_required(void);

								mcp23018_status_t mcp23018_writeReg(uint8_t regaddr, const uint8_t* data, uint16_t length);

								mcp23018_status_t mcp23018_readReg(uint8_t regaddr, uint8_t* data, uint16_t length);