Gert van der Knokke / Mbed 2 deprecated SPI_LCD

This is a sample program to drive a 128x128 LCD with t6963 controller through SPI by means of an MCP23S17 16-Bit I/O Expander with Serial Interface

Dependencies:   mbed

mcp_lcd.h@4:fd7c6559a56d, 2011-10-17 (annotated)

Committer:
gertk
Date:
Mon Oct 17 10:24:14 2011 +0000
Revision:
4:fd7c6559a56d
Parent:
2:9071445a6895 

        

        
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/* MCP23S17 - Microchip MCP23S17 16-bit Port Extender using SPI





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* Copyright (c) 2010 Gert van der Knokke





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*/





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#include "mbed.h"





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#define IODIRA      0x00





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#define IODIRB      0x01





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#define IPOLA       0x02





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#define IPOLB       0x03





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#define GPINTENA    0x04





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#define GPINTENB    0x05





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#define DEFVALA     0x06





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#define DEFVALB     0x07





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#define INTCONA     0x08





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#define INTCONB     0x09





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#define IOCONA      0x0A





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#define IOCONB      0x0B





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#define GPPUA       0x0C





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#define GPPUB       0x0D





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#define INTFA       0x0E





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#define INTFB       0x0F





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#define INTCAPA     0x10





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#define INTCAPB     0x11





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#define GPIOA       0x12





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#define GPIOB       0x13





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#define OLATA       0x14





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#define OLATB       0x15





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// LCD pin connections/bit numbers





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#define LCD_HALT    0x80





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#define LCD_FS      0x20





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#define LCD_RST     0x10





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#define LCD_CD      0x08





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#define LCD_CE      0x04





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#define LCD_RD      0x02





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#define LCD_WR      0x01





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//      T6963C OPCODES





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#define TXHOME      0x40    // SET TXT HOME ADDRESS





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#define TXAREA      0x41    // SET TXT AREA





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#define GRHOME      0x42    // SET GRAPHIC HOME ADDRESS





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#define GRAREA      0x43    // SET GRAPHIC AREA





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#define OFFSET      0x22    // SET OFFSET ADDRESS





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#define ADPSET      0x24    // SET ADDRESS POINTER





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#define AWRON       0xB0    // SET AUTO WRITE MODE





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#define AWROFF      0xB2    // RESET AUTO WRITE MODE





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/* This file contains definitions for all of the commands in a t6963. */





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/********************************************************************/





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/*  Register set */





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#define CPS 0x21 //Cursor pointer set





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#define ORS 0x22 //Offset register set





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#define APS 0x24 //Address pointer set





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#define THAS 0x40 //Text home address set





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#define TAS 0x41 //Text area set





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#define GHAS 0x42 //Graphic home address set





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#define GAS 0x43 //Graphic area set





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#define OM 0x80 //OR mode





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#define EM 0x81 //EXOR mode





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#define AM 0x83 //AND mode





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#define TAM 0x84 //TEXT ATTRIBUTE mode





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#define DOF 0x90 //Display OFF





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#define CONBOF 0x92 //Cursor ON, Blink OFF





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#define CONBON 0x93 //Cursor ON, Blink ON





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#define TONGOF 0x94 //Text ON, Graphic OFF





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#define TOFGON 0x98 //Text OFF, Graphic ON





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#define TONGON 0x9C //Text ON, Graphic ON





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#define LC1 0xA0 //1 Line cursor





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#define LC2 0xA1 //2 Line cursor





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#define LC3 0xA2 //3 Line cursor





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#define LC4 0xA3 //4 Line cursor





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#define LC5 0xA4 //5 Line cursor





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#define LC6 0xA5 //6 Line cursor





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#define LC7 0xA6 //7 Line cursor





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#define LC8 0xA7 //8 Line cursor





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#define DAWS 0xB0 //Data auto write set





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#define DARS 0xB1 //Data auto read set





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#define AR 0xB2 //Auto reset





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#define DWAAI 0xC0 //Data write and ADP increment





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#define DRAAI 0xC1 //Data read and ADP increment





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#define DWAAD 0xC2 //Data write and ADP decrement





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#define DRAAD 0xC3 //Data read and ADP decrement





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#define DWAAN 0xC4 //Data write and ADP nonvariable





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#define DRAAN 0xC5 //Data read and ADP nonvariable





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#define SP 0xE0 //Screen PEEK





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#define SC 0xE8 //Screen COPY





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#define BR 0xF0 //Bit RESET





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#define BS 0xF8 //Bit SET





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//add 3 bit data to these





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//commands to select bit