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WiringPi/wiringPi/mcp23016reg.h

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  1. /*

  2.  * mcp23016:

  3.  *	Copyright (c) 2012-2013 Gordon Henderson

  4.  *

  5.  *	Header file for code using the MCP23016 GPIO expander

  6.  *	chip.

  7.  ***********************************************************************

  8.  * This file is part of wiringPi:

  9.  *	https://github.com/WiringPi/WiringPi/

  10.  *

  11.  *    wiringPi is free software: you can redistribute it and/or modify

  12.  *    it under the terms of the GNU Lesser General Public License as

  13.  *    published by the Free Software Foundation, either version 3 of the

  14.  *    License, or (at your option) any later version.

  15.  *

  16.  *    wiringPi is distributed in the hope that it will be useful,

  17.  *    but WITHOUT ANY WARRANTY; without even the implied warranty of

  18.  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

  19.  *    GNU Lesser General Public License for more details.

  20.  *

  21.  *    You should have received a copy of the GNU Lesser General Public

  22.  *    License along with wiringPi.

  23.  *    If not, see <http://www.gnu.org/licenses/>.

  24.  ***********************************************************************

  25.  */

  26. 

  27. // MCP23016 Registers

  28. 

  29. #define	MCP23016_GP0		0x00

  30. #define	MCP23016_GP1		0x01

  31. #define	MCP23016_OLAT0		0x02

  32. #define	MCP23016_OLAT1		0x03

  33. #define	MCP23016_IPOL0		0x04

  34. #define	MCP23016_IPOL1		0x05

  35. #define	MCP23016_IODIR0		0x06

  36. #define	MCP23016_IODIR1		0x07

  37. #define	MCP23016_INTCAP0	0x08

  38. #define	MCP23016_INTCAP1	0x09

  39. #define	MCP23016_IOCON0		0x0A

  40. #define	MCP23016_IOCON1		0x0B

  41. 

  42. // Bits in the IOCON register

  43. 

  44. #define	IOCON_IARES	0x01

  45. 

  46. // Default initialisation mode

  47. 

  48. #define	IOCON_INIT	0