static void writeReg(lcd_data_t reg, lcd_data_t data)
{
setRS(0);
writeLcd(reg);
setRS(1);
writeLcd(data);
}
void lcdTest(void)
{
for(int y=0; y<240; y++) {
lcdPixel(0, y, COLOR_WHITE);
lcdPixel(319, y, COLOR_WHITE);
}
for(int x=0; x<320; x++) {
lcdPixel(x, 0, COLOR_WHITE);
lcdPixel(x, 239, COLOR_WHITE);
}
lcdStr(2, 2, "Hello world!", COLOR_GREEN, COLOR_BLUE);
return;
writeReg(0x004f, 0); // Set GDDRAM X address counter
writeReg(0x004e, 0); // Set GDDRAM Y address counter
setRS(0);
writeLcd(0x22); // RAM data write register
setRS(1);
for(int y=0; y<240; y++) {
for(int x=0; x<320; x++) {
writeLcd(lcdColor(y, x, 0));
/*
if((y & 0x10) ^ (x & 0x10)) {
writeLcd(lcdColor(0xff, 0, 0));
} else {
writeLcd(lcdColor(0, 0xff, 0));
}
*/
}
}
}
void lcdFill(lcd_color_t color)
{
writeReg(0x004f, 0); // Set GDDRAM X address counter
writeReg(0x004e, 0); // Set GDDRAM Y address counter
setRS(0); writeLcd(0x22); // RAM data write register
setRS(1);
for(int i=0; i<320*240; i++) {
writeLcd(color);
}
}
//Prints a single character specified by its ASCII code to the display.
void printChar(u08 data)
{
//set RS (Register Select) line high to select data register
sbi(PORTD, 7);
writeLcd(data);
delayUs(50);
}
//Writes a command byte to the LCD.
void writeControl(u08 data)
{
//set RS (Register Select) line low to select command register
cbi(PORTD, 7);
writeLcd(data);
//wait for the instruction to be executed
delayUs(100);
}
void lcdChar(int x, int y, char c, lcd_color_t fg, lcd_color_t bg)
{
uint8_t* ptr = fnt8x8 + (unsigned int)c*8;
for(int py=y; py<y+FONT_H; py++)
{
writeReg(0x004f, x); // Set GDDRAM X address counter
writeReg(0x004e, py); // Set GDDRAM Y address counter
setRS(0); writeLcd(0x22); // RAM data write register
setRS(1);
uint8_t l = *ptr++;
for(int px=x; px<x+FONT_W; px++)
{
if (l & 0x80) {
writeLcd(fg);
} else {
writeLcd(bg);
}
l <<= 1;
}
}
}
