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48 lines
1.5 KiB
48 lines
1.5 KiB
/* |
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* mcp23016: |
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* Copyright (c) 2012-2013 Gordon Henderson |
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* |
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* Header file for code using the MCP23016 GPIO expander |
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* chip. |
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*********************************************************************** |
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* This file is part of wiringPi: |
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* https://projects.drogon.net/raspberry-pi/wiringpi/ |
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* |
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* wiringPi is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Lesser General Public License as |
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* published by the Free Software Foundation, either version 3 of the |
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* License, or (at your option) any later version. |
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* |
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* wiringPi 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 Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with wiringPi. |
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* If not, see <http://www.gnu.org/licenses/>. |
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*********************************************************************** |
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*/ |
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// MCP23016 Registers |
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#define MCP23016_GP0 0x00 |
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#define MCP23016_GP1 0x01 |
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#define MCP23016_OLAT0 0x02 |
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#define MCP23016_OLAT1 0x03 |
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#define MCP23016_IPOL0 0x04 |
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#define MCP23016_IPOL1 0x05 |
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#define MCP23016_IODIR0 0x06 |
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#define MCP23016_IODIR1 0x07 |
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#define MCP23016_INTCAP0 0x08 |
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#define MCP23016_INTCAP1 0x09 |
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#define MCP23016_IOCON0 0x0A |
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#define MCP23016_IOCON1 0x0B |
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// Bits in the IOCON register |
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#define IOCON_IARES 0x01 |
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// Default initialisation mode |
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#define IOCON_INIT 0
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