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

Revision:
1:e98e29ea2d03
Child:
2:9071445a6895
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mcp_lcd.h	Sun Dec 05 14:38:10 2010 +0000
@@ -0,0 +1,46 @@
+/* MCP23S17 - Microchip MCP23S17 16-bit Port Extender using SPI
+* Copyright (c) 2010 Gert van der Knokke
+*/
+#include "mbed.h"
+
+#define IODIRA      0x00
+#define IODIRB      0x01
+#define IPOLA       0x02
+#define IPOLB       0x03
+#define GPINTENA    0x04
+#define GPINTENB    0x05
+#define DEFVALA     0x06
+#define DEFVALB     0x07
+#define INTCONA     0x08
+#define INTCONB     0x09
+#define IOCONA      0x0A
+#define IOCONB      0x0B
+#define GPPUA       0x0C
+#define GPPUB       0x0D
+#define INTFA       0x0E
+#define INTFB       0x0F
+#define INTCAPA     0x10
+#define INTCAPB     0x11
+#define GPIOA       0x12
+#define GPIOB       0x13
+#define OLATA       0x14
+#define OLATB       0x15
+
+// LCD pin connections/bit numbers
+#define LCD_HALT    0x80
+#define LCD_FS      0x20
+#define LCD_RST     0x10
+#define LCD_CD      0x08
+#define LCD_CE      0x04
+#define LCD_RD      0x02
+#define LCD_WR      0x01
+
+//      T6963C OPCODES
+#define TXHOME      0x40    // SET TXT HM ADD
+#define TXAREA      0x41    // SET TXT AREA
+#define GRHOME      0x42    // SET GRAPHIC HOME ADDRESS
+#define GRAREA      0x43    // SET GRAPHIC AREA
+#define OFFSET      0x22    // SET OFFSET ADDRESS
+#define ADPSET      0x24    // SET ADDRESS POINTER
+#define AWRON       0xB0    // SET AUTO WRITE MODE
+#define AWROFF      0xB2    // RESET AUTO WRITE MODE