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/* Copyright 2019
*
* 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
/*
PCA9555
,----------.
SDA --| SDA P00 |-- P00
SCL --| SCL P01 |-- P01
INT --| INT P02 |-- P02
| P03 |-- P03
A0 --| A0 P04 |-- P04
A1 --| A1 P05 |-- P05
A2 --| A2 P06 |-- P06
| P07 |-- P07
| |
| P10 |-- P10
| P11 |-- P11
| P12 |-- P12
| P13 |-- P13
| P14 |-- P14
| P15 |-- P15
| P16 |-- P16
| P17 |-- P17
`----------'
*/
#define PCA9555_PORT0 0
#define PCA9555_PORT1 1
#define ALL_OUTPUT 0
#define ALL_INPUT 0xFF
#define ALL_LOW 0
#define ALL_HIGH 0xFF
void pca9555_init(uint8_t slave_addr);
void pca9555_set_config(uint8_t slave_addr, uint8_t port, uint8_t conf);
void pca9555_set_output(uint8_t slave_addr, uint8_t port, uint8_t conf);
uint8_t pca9555_readPins(uint8_t slave_addr, uint8_t port);
uint16_t pca9555_readAllPins(uint8_t slave_addr);
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