void SendLcd(unsigned char type, unsigned char dat)
{
byte i;
LCD_DATA(type); // set up first bit as command or data
LCD_CS(0); // Enable device CS
LCD_CLK(0); // Pull Clock LOW
LCD_CLK(1); // Pul Clock HIGH
if(dat == 0x0){ // spi cannot transfer zero??
LCD_DATA(0);
for(i=0; i<8; i++){
LCD_CLK(0); // Pull Clock LOW
LCD_CLK(1);
}
}
else{
SPCR |=0x50; // Enable Hardware SPI
SPSR |= 0x1;
SPDR = dat; // send data
while(!(SPSR & 0x80)); // wait until send complete
}
SPCR &=~0x50; // Disable Hardware SPI, this releases the SPI pins
// for general IO use. which is used to send the 1'st
LCD_CS(1); // disable device CS // bit out
}
/*******************************************************************************
* Transfer 1 byte over the serial communication *
* Parameter: byte: byte to be sent *
* mode: OUT = transmit byte, IN = receive byte *
* Return: byte read while sending *
*******************************************************************************/
static unsigned char spi_tran_man (unsigned char byte, unsigned int mode) {
unsigned char val = 0;
int i;
if (mode == OUT) { DAT_MODE (OUT); }
else { DAT_MODE (IN); }
for (i = 7; i >= 0; i--) {
LCD_CLK(0);
delay(1);
if (mode == OUT) {
LCD_DAT((byte & (1 << i)) != 0);
}
else {
val |= (BUS_VAL() << i);
}
LCD_CLK(1);
delay(1);
}
return (val);
}
void LCD_Init(void)
{
LCD_CS(1);
LCD_CLK(0);
LCD_DATA(0);
LCD_RESET(1);
delay(50);
LCD_RESET(0);
delay(50);
LCD_RESET(1);
delay(50);
LCD_CS(1);
LCD_CLK(1);
LCD_DATA(1);
delay(10);
SendLcd(LCDCommand,SWRESET);
delay(10);
SendLcd(LCDCommand,SLEEPOUT); // Sleepout
// SendLcd(LCDCommand,INVON); // Invert display mode
// SendLcd(LCDCommand,BSTRON); // BoostON
SendLcd(LCDCommand,MADCTL); // memory access control
SendLcd(LCDData,0xe0);
SendLcd(LCDCommand,SETCON); // Set Contrast
SendLcd(LCDData,0x40);
delay(10);
SendLcd(LCDCommand,DISPON); // Display On
SendLcd(LCDCommand,COLMOD); // Set Color Mode
SendLcd(LCDData,0x03); // 12bit per pixel
SendLcd(LCDCommand,NOP); // Set Color Mode
}
void SendLcd_color(unsigned char color){
LCD_DATA(LCDData); // set up first bit as command or data
LCD_CLK(0); // Pull Clock LOW
LCD_CLK(1); // Pul Clock HIGH
LCD_CLK(0);
SPCR |=0x50; // Enable Hardware SPI
SPSR |=0x1;
SPDR = color; // send data
while(!(SPSR & 0x80)); // wait until send complete
// disable device CS
SPCR &=~0x50; // Disable Hardware SPI, this releases the SPI pins
LCD_CLK(0); // for general IO use. which is used to send the 1'st
// bit out
}
