35 lines
1.2 KiB
C
35 lines
1.2 KiB
C
/*
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* Copyright 2020 Richard Titmuss (richard.titmuss@gmail.com)
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <stdbool.h>
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#include <stdint.h>
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#define IODIRA 0x00
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#define IODIRB 0x01
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#define GPPUA 0x0C
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#define GPPUB 0x0D
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#define GPIOA 0x12
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#define GPIOB 0x13
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typedef int16_t mcp23018_status_t;
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void msp23018_init(void);
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bool mcp23018_reset_required(void);
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mcp23018_status_t mcp23018_writeReg(uint8_t regaddr, const uint8_t* data, uint16_t length);
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mcp23018_status_t mcp23018_readReg(uint8_t regaddr, uint8_t* data, uint16_t length);
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