mcp23016.h

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/*
 *   openMMC -- Open Source modular IPM Controller firmware
 *
 *   Copyright (C) 2021  Krzysztof Macias <krzysztof.macias@creotech.pl>
 *
 *   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 3 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/>.
 *
 *   @license GPL-3.0+ <http://spdx.org/licenses/GPL-3.0+>
 */
 
#ifndef MCP23016_H_
#define MCP23016_H_
 
#include "mmc_error.h"
#include "port.h"
 
#define MCP23016_GP_REG          0x0
 
#define MCP23016_OLAT_REG        0x2
 
#define MCP23016_IPOL_REG        0x4
 
#define MCP23016_IODIR_REG       0x6
 
#define MCP23016_INTCAP_REG      0x8
 
#define MCP23016_IOCON_REG       0xA
 
/* Pins Read/Write */
mmc_err mcp23016_read_port( uint8_t port_num, uint8_t *readout );
 
mmc_err mcp23016_read_pin( uint8_t port_num, uint8_t pin, uint8_t *status );
 
mmc_err mcp23016_write_port( uint8_t port_num, uint8_t data );
 
mmc_err mcp23016_write_pin( uint8_t port_num, uint8_t pin, bool data );
 
/* Polarity Control */
mmc_err mcp23016_set_port_pol( uint8_t port_num, uint8_t pol );
 
mmc_err mcp23016_get_port_pol( uint8_t port_num, uint8_t *pol );
 
/* Pins direction (output/input) */
mmc_err mcp23016_set_port_dir( uint8_t port_num, uint8_t dir );
 
mmc_err mcp23016_get_port_dir( uint8_t port_num, uint8_t *dir );
 
mmc_err mcp23016_read_reg_pair( uint8_t reg, uint16_t *readout);
mmc_err mcp23016_write_reg_pair( uint8_t reg, uint16_t data);
 
#endif