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@@ -1,18 +1,6 @@ | ||
/* Copyright 2020 zvecr<[email protected]> | ||
* | ||
* 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/>. | ||
*/ | ||
// Copyright 2022 zvecr<[email protected]> | ||
// SPDX-License-Identifier: GPL-2.0-or-later | ||
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#include "mcp23018.h" | ||
#include "i2c_master.h" | ||
#include "wait.h" | ||
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@@ -40,7 +28,7 @@ void mcp23018_init(uint8_t addr) { | |
} | ||
} | ||
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bool mcp23018_set_config(uint8_t slave_addr, uint8_t port, uint8_t conf) { | ||
bool mcp23018_set_config(uint8_t slave_addr, mcp23018_port_t port, uint8_t conf) { | ||
uint8_t addr = SLAVE_TO_ADDR(slave_addr); | ||
uint8_t cmdDirection = port ? CMD_IODIRB : CMD_IODIRA; | ||
uint8_t cmdPullup = port ? CMD_GPPUB : CMD_GPPUA; | ||
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@@ -60,7 +48,7 @@ bool mcp23018_set_config(uint8_t slave_addr, uint8_t port, uint8_t conf) { | |
return true; | ||
} | ||
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bool mcp23018_set_output(uint8_t slave_addr, uint8_t port, uint8_t conf) { | ||
bool mcp23018_set_output(uint8_t slave_addr, mcp23018_port_t port, uint8_t conf) { | ||
uint8_t addr = SLAVE_TO_ADDR(slave_addr); | ||
uint8_t cmd = port ? CMD_GPIOB : CMD_GPIOA; | ||
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@@ -86,7 +74,7 @@ bool mcp23018_set_output_all(uint8_t slave_addr, uint8_t confA, uint8_t confB) { | |
return true; | ||
} | ||
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bool mcp23018_readPins(uint8_t slave_addr, uint8_t port, uint8_t* out) { | ||
bool mcp23018_readPins(uint8_t slave_addr, mcp23018_port_t port, uint8_t* out) { | ||
uint8_t addr = SLAVE_TO_ADDR(slave_addr); | ||
uint8_t cmd = port ? CMD_GPIOB : CMD_GPIOA; | ||
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// Copyright 2022 zvecr<[email protected]> | ||
// SPDX-License-Identifier: GPL-2.0-or-later | ||
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#pragma once | ||
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#include <stdint.h> | ||
#include <stdbool.h> | ||
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/** | ||
* Port ID | ||
*/ | ||
typedef enum { | ||
mcp23018_PORTA, | ||
mcp23018_PORTB, | ||
} mcp23018_port_t; | ||
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/** | ||
* Helpers for set_config | ||
*/ | ||
enum { | ||
ALL_OUTPUT = 0, | ||
ALL_INPUT = 0xFF, | ||
}; | ||
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/** | ||
* Helpers for set_output | ||
*/ | ||
enum { | ||
ALL_LOW = 0, | ||
ALL_HIGH = 0xFF, | ||
}; | ||
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/** | ||
* Init expander and any other dependent drivers | ||
*/ | ||
void mcp23018_init(uint8_t slave_addr); | ||
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/** | ||
* Configure input/output to a given port | ||
*/ | ||
bool mcp23018_set_config(uint8_t slave_addr, mcp23018_port_t port, uint8_t conf); | ||
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/** | ||
* Write high/low to a given port | ||
*/ | ||
bool mcp23018_set_output(uint8_t slave_addr, mcp23018_port_t port, uint8_t conf); | ||
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/** | ||
* 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); | ||
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/** | ||
* Read state of a given port | ||
*/ | ||
bool mcp23018_readPins(uint8_t slave_addr, mcp23018_port_t port, uint8_t* ret); | ||
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/** | ||
* Read state of both ports sequentially | ||
* | ||
* - slightly faster than multiple readPins | ||
*/ | ||
bool mcp23018_readPins_all(uint8_t slave_addr, uint16_t* ret); |
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