/* Initializes LCD */
void InitializeLCD(void)
{
GPIO_setHigh(myGpio, E);
LCDDelay1600();
LCDDelay1600();
LCDDelay1600();
LCDDelay1600();
WriteCommandLCD(0x38); //Command to select 8 bit interface
LCDDelay1600();
WriteCommandLCD(0x38); //Command to select 8 bit interface
LCDDelay(); //Small delay
WriteCommandLCD(0x38); //Command to select 8 bit interface
LCDDelay();
WriteCommandLCD(0x08); //Command to off cursor,display off
WriteCommandLCD(0x01); //Command to Clear LCD
LCDDelay1600();
WriteCommandLCD(0x06); //Command for setting entry mode
WriteCommandLCD(0x0f); //Command to on cursor,blink cursor
WriteCommandLCD(0x02); //Command return the cursor to home
LCDDelay1600();
}
/***************************LCD写命令函数********************/
void LCDWriteCmd(unchar cmd)
{
DBPort=cmd;
RS=0;
RW=0;
LCDDelay(5);
EN=1;
EN=0;
}
/************************LCD写数据函数**************************/
void LCDWriteDate(unchar date)
{
DBPort=date;
RS=1;
RW=0;
LCDDelay(5);
EN=1;
EN=0;
}
/* Send a byte of data to LCD */
void SendByte(unsigned char Value)
{
unsigned char temp;
if((Value & 0x01) == 0x01)
GPIO_setHigh(myGpio, D0);
else
GPIO_setLow(myGpio, D0);
if((Value & 0x02) == 0x02)
GPIO_setHigh(myGpio, D1);
else
GPIO_setLow(myGpio, D1);
if((Value & 0x04) == 0x04)
GPIO_setHigh(myGpio, D2);
else
GPIO_setLow(myGpio, D2);
if((Value & 0x08) == 0x08)
GPIO_setHigh(myGpio, D3);
else
GPIO_setLow(myGpio, D3);
if((Value & 0x10) == 0x10)
GPIO_setHigh(myGpio, D4);
else
GPIO_setLow(myGpio, D4);
if((Value & 0x20) == 0x20)
GPIO_setHigh(myGpio, D5);
else
GPIO_setLow(myGpio, D5);
if((Value & 0x40) == 0x40)
GPIO_setHigh(myGpio, D6);
else
GPIO_setLow(myGpio, D6);
if((Value & 0x80) == 0x80)
GPIO_setHigh(myGpio, D7);
else
GPIO_setLow(myGpio, D7);
GPIO_setHigh(myGpio, E); //Set E pin to select LCD
for(temp=0;temp<5; temp++);
GPIO_setLow(myGpio, E); //Clear E pin to deselect LCD
LCDDelay(); //Small delay
}
/* Writes a command byte to LCD */
void WriteCommandLCD(unsigned char CommandByte)
{
GPIO_setLow(myGpio, RS); //Clear RS pin to write command
SendByte(CommandByte);
LCDDelay(); //Small delay
}
/* Writes a Data byte to LCD */
void WriteDataLCD(unsigned char DataByte)
{
GPIO_setHigh(myGpio, RS); //Set RS pin to 1 to write Data
SendByte(DataByte);
LCDDelay(); //Small delay
}