forked from forks/qmk_firmware
e9bd7d7ad3
* remove i2c_start and i2c_stop from i2c drivers * remove static i2c_address variable from chibios i2c driver
36 lines
1.2 KiB
C
36 lines
1.2 KiB
C
/* 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 XXX KC_NO
|
|
|
|
// I2C aliases and register addresses (see "mcp23018.md")
|
|
#define I2C_ADDR (0x20 << 1) // 0b0100000
|
|
#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);
|