mirror of
https://github.com/Keychron/qmk_firmware.git
synced 2024-12-13 05:38:51 +06:00
71 lines
1.3 KiB
C
71 lines
1.3 KiB
C
// Copyright 2022 zvecr<git@zvecr.com>
|
|
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
|
|
#pragma once
|
|
|
|
#include <stdint.h>
|
|
#include <stdbool.h>
|
|
|
|
/**
|
|
* Port ID
|
|
*/
|
|
typedef enum {
|
|
mcp23018_PORTA,
|
|
mcp23018_PORTB,
|
|
} mcp23018_port_t;
|
|
|
|
/**
|
|
* Helpers for set_config
|
|
*/
|
|
enum {
|
|
ALL_OUTPUT = 0,
|
|
ALL_INPUT = 0xFF,
|
|
};
|
|
|
|
/**
|
|
* Helpers for set_output
|
|
*/
|
|
enum {
|
|
ALL_LOW = 0,
|
|
ALL_HIGH = 0xFF,
|
|
};
|
|
|
|
/**
|
|
* Init expander and any other dependent drivers
|
|
*/
|
|
void mcp23018_init(uint8_t slave_addr);
|
|
|
|
/**
|
|
* Configure input/output to a given port
|
|
*/
|
|
bool mcp23018_set_config(uint8_t slave_addr, mcp23018_port_t port, uint8_t conf);
|
|
|
|
/**
|
|
* Write high/low to a given port
|
|
*/
|
|
bool mcp23018_set_output(uint8_t slave_addr, mcp23018_port_t port, uint8_t conf);
|
|
|
|
/**
|
|
* Write high/low to both ports sequentially
|
|
*
|
|
* - slightly faster than multiple set_output
|
|
*/
|
|
bool mcp23018_set_output_all(uint8_t slave_addr, uint8_t confA, uint8_t confB);
|
|
|
|
/**
|
|
* Read state of a given port
|
|
*/
|
|
bool mcp23018_read_pins(uint8_t slave_addr, mcp23018_port_t port, uint8_t* ret);
|
|
|
|
/**
|
|
* Read state of both ports sequentially
|
|
*
|
|
* - slightly faster than multiple readPins
|
|
*/
|
|
bool mcp23018_read_pins_all(uint8_t slave_addr, uint16_t* ret);
|
|
|
|
// DEPRECATED - DO NOT USE
|
|
|
|
#define mcp23018_readPins mcp23018_read_pins
|
|
#define mcp23018_readPins_all mcp23018_read_pins_all
|