Move driver to core (#15944)
This commit is contained in:
parent
2e279f1b88
commit
74e8a71768
4 changed files with 72 additions and 52 deletions
65
drivers/gpio/mcp23018.h
Normal file
65
drivers/gpio/mcp23018.h
Normal file
|
@ -0,0 +1,65 @@
|
|||
// 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_readPins(uint8_t slave_addr, mcp23018_port_t port, uint8_t* ret);
|
||||
|
||||
/**
|
||||
* Read state of both ports sequentially
|
||||
*
|
||||
* - slightly faster than multiple readPins
|
||||
*/
|
||||
bool mcp23018_readPins_all(uint8_t slave_addr, uint16_t* ret);
|
Loading…
Add table
Add a link
Reference in a new issue