2020-06-18 12:01:22 +02:00
|
|
|
/* Copyright 2019 Neil Kettle
|
|
|
|
|
*
|
|
|
|
|
* 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"
|
|
|
|
|
|
|
|
|
|
#ifdef RIGHT_HALF
|
|
|
|
|
# include <stdint.h>
|
|
|
|
|
# include "i2c_master.h"
|
|
|
|
|
|
|
|
|
|
// I2C aliases and register addresses (see "mcp23018.md")
|
2024-01-17 14:05:38 +01:00
|
|
|
# define I2C_ADDR (0b0100000<<1)
|
2020-06-18 12:01:22 +02:00
|
|
|
# define IODIRA 0x00 // i/o direction register
|
|
|
|
|
# define IODIRB 0x01
|
|
|
|
|
# define GPPUA 0x0C // GPIO pull-up resistor register
|
|
|
|
|
# define GPPUB 0x0D
|
|
|
|
|
# define GPIOA 0x12 // general purpose i/o port register (write modifies OLAT)
|
|
|
|
|
# define GPIOB 0x13
|
|
|
|
|
# define OLATA 0x14 // output latch register
|
|
|
|
|
# define OLATB 0x15
|
|
|
|
|
|
|
|
|
|
extern i2c_status_t mcp23018_status;
|
|
|
|
|
# define MCP23018_I2C_TIMEOUT 100
|
|
|
|
|
|
|
|
|
|
uint8_t init_mcp23018(void);
|
|
|
|
|
#endif
|
