Wim Huiskamp / Mbed 2 deprecated mbed_bus

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Dependencies:   HDSP253X mbed PCF8574_Bus

PCF8574_EnableBus.h@0:2467aed99127, 2011-08-31 (annotated)

Committer:
wim
Date:
Wed Aug 31 19:45:31 2011 +0000
Revision:
0:2467aed99127
First Version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
wim 0:2467aed99127 1 /* PCF8574_EnableBus - Use the PCF8574 I2C Port Extender for controlling the Chip Enable Bus
wim 0:2467aed99127 2 * Copyright (c) 2011 Wim Huiskamp
wim 0:2467aed99127 3 *
wim 0:2467aed99127 4 * Released under the MIT License: http://mbed.org/license/mit
wim 0:2467aed99127 5 *
wim 0:2467aed99127 6 * version 0.2 Initial Release
wim 0:2467aed99127 7 */
wim 0:2467aed99127 8 #ifndef _PCF8574_ENABLEBUS_H
wim 0:2467aed99127 9 #define _PCF8574_ENABLEBUS_H
wim 0:2467aed99127 10
wim 0:2467aed99127 11 //Pin Defines for PCF8574 Enable Bus
wim 0:2467aed99127 12 //Note: 'Reset' causes all devices on the 'Control & Display Unit' to be reset!
wim 0:2467aed99127 13 #define D_CS_SWITCH 0x01
wim 0:2467aed99127 14 #define D_LATCHEN_1 0x02
wim 0:2467aed99127 15 #define D_LATCHEN_2 0x04
wim 0:2467aed99127 16 #define D_CS_BRIGHT 0x08
wim 0:2467aed99127 17 #define D_CS_DISP 0x10
wim 0:2467aed99127 18 #define D_CS_SPARE 0x20
wim 0:2467aed99127 19 #define D_RESET 0x40
wim 0:2467aed99127 20 #define D_NOGO 0x80
wim 0:2467aed99127 21
wim 0:2467aed99127 22 #define D_ENABLE_MSK 0x3F
wim 0:2467aed99127 23
wim 0:2467aed99127 24 //Enums for Enable Bus
wim 0:2467aed99127 25 #include "BusEnums.h"
wim 0:2467aed99127 26 enum CS_Pin { CS_SWITCH, LATCHEN_1, LATCHEN_2, CS_BRIGHT, CS_DISP, CS_SPARE };
wim 0:2467aed99127 27
wim 0:2467aed99127 28
wim 0:2467aed99127 29 /** Create an PCF8574_EnableBus object connected to the specified I2C object and using the specified deviceAddress
wim 0:2467aed99127 30 *
wim 0:2467aed99127 31 * @param I2C &i2c the I2C port to connect to
wim 0:2467aed99127 32 * @param char deviceAddress the address of the PCF8574
wim 0:2467aed99127 33 */
wim 0:2467aed99127 34 class PCF8574_EnableBus {
wim 0:2467aed99127 35 public:
wim 0:2467aed99127 36 PCF8574_EnableBus(I2C &i2c, char deviceAddress);
wim 0:2467aed99127 37 void chipselect (CS_Pin cs_pin, Bit_Level cs_level);
wim 0:2467aed99127 38 void reset (Bit_Level rst_level);
wim 0:2467aed99127 39 void nogo (Bit_Level nogo_level);
wim 0:2467aed99127 40 protected:
wim 0:2467aed99127 41 I2C &_i2c;
wim 0:2467aed99127 42 char _readOpcode;
wim 0:2467aed99127 43 char _writeOpcode;
wim 0:2467aed99127 44 char _enable_bus;
wim 0:2467aed99127 45 char _reset_pin;
wim 0:2467aed99127 46 char _nogo_pin;
wim 0:2467aed99127 47 // char _read();
wim 0:2467aed99127 48 void _write();
wim 0:2467aed99127 49 void _write(char byte);
wim 0:2467aed99127 50 void _init();
wim 0:2467aed99127 51 };
wim 0:2467aed99127 52
wim 0:2467aed99127 53 #endif