Libraries and Example of mbed parallel bus using I2C port expanders
Dependencies: HDSP253X mbed PCF8574_Bus
Diff: PCF8574_DataBus.h
- Revision:
- 7:8680b8b718c8
- Parent:
- 6:aaefa04f06be
--- a/PCF8574_DataBus.h Sun Jan 25 17:30:47 2015 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,45 +0,0 @@ -/* PCF8574_DataBus - Use the PCF8574 I2C Port Extender for controlling the Data Bus - * Copyright (c) 2011 Wim Huiskamp - * - * Released under the MIT License: http://mbed.org/license/mit - * - * version 0.2 Initial Release -*/ -#ifndef _PCF8574_DATABUS_H -#define _PCF8574_DATABUS_H - -//Pin Defines for PCF8574 Data Bus -#define D_D0 0x01 -#define D_D1 0x02 -#define D_D2 0x04 -#define D_D3 0x08 -#define D_D4 0x10 -#define D_D5 0x20 -#define D_D6 0x40 -#define D_D7 0x80 - -#define D_DATA_MSK 0xFF - -//Enums for Data Bus -#include "BusEnums.h" - - -/** Create an PCF8574_DataBus object connected to the specified I2C object and using the specified deviceAddress - * - * @param I2C &i2c the I2C port to connect to - * @param char deviceAddress the address of the PCF8574 -*/ -class PCF8574_DataBus { -public: - PCF8574_DataBus(I2C &i2c, char deviceAddress); - char read(); - void write(char byte); - void busdir (Bus_Dir bus_dir); -protected: - I2C &_i2c; - char _readOpcode; - char _writeOpcode; - void _init(); -}; - -#endif \ No newline at end of file