gistfile1.h

#include "AT91SAM7.h"

typedef struct _AT91S_PIO {
	AT91_REG	 PIO_SODR; 	// Set Output Data Register
	AT91_REG	 PIO_CODR; 	// Clear Output Data Register

} AT91S_PIO, *AT91PS_PIO;

#define A0		AT91C_PIO_PA30	//((unsigned int) 1 << 30) // Pin Controlled by PA30
#define WR		AT91C_PIO_PA4
#define RD		AT91C_PIO_PA28
#define D0		AT91C_PIO_PA6
#define D1		AT91C_PIO_PA26
#define D2		AT91C_PIO_PA8
#define D3		AT91C_PIO_PA24
#define D4		AT91C_PIO_PA10
#define D5		AT91C_PIO_PA22
#define D6		AT91C_PIO_PA12
#define D7		AT91C_PIO_PA20
#define XCS		AT91C_PIO_PA14
#define RST		AT91C_PIO_PA21

void writeIO (int mask)
{
	volatile AT91PS_PIO pPIO = AT91C_BASE_PIOA;  // (PIOA) Base Address

	pPIO -> PIO_SODR &= ( mask | D0);
	pPIO -> PIO_SODR &= ( mask | D1);
	pPIO -> PIO_SODR &= ( mask | D2);
	pPIO -> PIO_SODR &= ( mask | D3);
	pPIO -> PIO_SODR &= ( mask | D4);
	pPIO -> PIO_SODR &= ( mask | D5);
	pPIO -> PIO_SODR &= ( mask | D6);
	pPIO -> PIO_SODR &= ( mask | D7);
}

gistfile2.h

// Control instructions

// 						Function								Parameter
#define EXTIN	0x39	// Ext = 0 set
#define EXTOUT	0x31	// Ext = 1 set
// Ext = 0
#define DISON   0xAF    // Display on
#define DISOFF  0xAE    // Display off
#define DISNOR  0xA6    // Normal display
#define DISINV  0xA7    // Inverse display
#define COMSCN  0xBB    // Common scan direction				1 byte
#define DISCTL  0xCA    // Display control						3 bytes
#define SLPIN   0x95    // Sleep in
#define SLPOUT  0x94    // Sleep out
#define LASET   0x75    // Line address set
#define CASET   0x15    // Column address set					2 bytes
#define DATSDR  0xBC    // Data scan direction					2 bytes
#define RGBSET8 0xCE    // 256-color position set				3 bytes
#define RAMWR   0x5C    // Writing to memory					data
#define RAMRD   0x5D    // Reading from memory					data
#define PTLIN   0xA8    // Partial display in					2 bytes
#define PTLOUT  0xA9    // Partial display out
#define RMWIN   0xE0    // Read and modify write
#define RMWOUT  0xEE    // RMW End
#define ASCSET  0xAA    // Area scroll set						4 bytes
#define SCSTART 0xAB    // Scroll start set						1 byte
#define OSCON   0xD1    // Internal oscillation on
#define OSCOFF  0xD2    // Internal oscillation off
#define PWRCTR  0x20    // Power control						1 byte
#define VOLCTR  0x81    // Electronic volume control            2 bytes
#define VOLUP   0xD6    // Increment electronic control by 1
#define VOLDOWN	0xD7    // Decrement electronic control by 1
#define RESERVE 0x82    // Not used
#define EPSRRD1 0x7C    // Read register 1
#define EPSRRD2 0x7D    // Read register 2
#define NOP     0x25    // NOP instruction
#define EPINT	0x07    // Initial code(1)                      1 byte
// Ext = 1
#define GRAY1   0x20    // Frame 1 gray PWM set
#define GRAY2   0x21    // Frame 2 gray PWM set
#define ANASET  0x32    // Analog circuit set
#define SWINT   0x34    // Software initial
#define EPCTIN  0xCD    // Control EEPROM
#define EPCOUT  0xCC    // Cancel EEPROM control
#define EPMWR   0xFC    // Write into EEPROM
#define EPMRD   0xFD    // Read from EEPROM