sed1335-avr.c

Driver for SED1335 320x240 graphical LCD

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// 
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#include <avr/io.h>
#include <avr/pgmspace.h>
#include <util/delay.h>

#define SED1335_DATA_PORT		PORTC
#define SED1335_DATA_DIR		DDRC
#define SED1335_DATA_PIN		PINC

#define SED1335_CONTROL_PORT	PORTD
#define SED1335_CONTROL_DIR		DDRD
#define	SED1335_CONTROL_PIN		PIND

#define SED1335_A0				(1 << PD0)
#define SED1335_WR				(1 << PD1)
#define SED1335_RD				(1 << PD2)
#define SED1335_CS				(1 << PD3)
#define SED1335_RES				(1 << PD4)
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void GLCD_InitPorts(void)
{
SED1335_DATA_DIR = 0xFF;
SED1335_CONTROL_PORT |= (SED1335_A0 | SED1335_WR | SED1335_RD | SED1335_CS | SED1335_RES); 
SED1335_CONTROL_DIR |= (SED1335_A0 | SED1335_WR | SED1335_RD | SED1335_CS | SED1335_RES); 
}
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void GLCD_WriteData(unsigned char dataToWrite)
{
SED1335_DATA_PORT = dataToWrite;
SED1335_DATA_DIR = 0xFF;
SED1335_CONTROL_PORT &= ~(SED1335_CS | SED1335_A0 | SED1335_WR);
asm("nop");
SED1335_CONTROL_PORT |= (SED1335_CS | SED1335_A0 | SED1335_WR);
}
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void GLCD_WriteCommand(unsigned char commandToWrite)
{
SED1335_DATA_PORT = commandToWrite;
SED1335_DATA_DIR = 0xFF;
SED1335_CONTROL_PORT &= ~(SED1335_CS |SED1335_WR);
asm("nop");
SED1335_CONTROL_PORT |= (SED1335_CS | SED1335_WR);
}
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unsigned char GLCD_ReadData(void)
{
unsigned char tmp;
SED1335_CONTROL_PORT &= ~(SED1335_CS | SED1335_RD);
asm("nop");
SED1335_DATA_DIR = 0x00;
asm("nop");
tmp =  SED1335_DATA_PIN;
SED1335_CONTROL_PORT |= (SED1335_CS | SED1335_RD);
return tmp;
}
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unsigned char GLCD_ReadByteFromROMMemory(unsigned char * ptr)
{
return pgm_read_byte(ptr);
}
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