// Purpose: Initialize a graphic LCD. This must be called before any
// other glcd function is used.
// Inputs: The initialization mode
// OFF - Turns the LCD off
// ON - Turns the LCD on
// Date: 5/28/2003
void glcd_init(int1 mode)
{
// Initialze some pins
output_HIGH(GLCD_RST);
output_low(GLCD_E);
output_low(GLCD_CS1);
output_low(GLCD_CS2);
output_low(GLCD_DI); // Set for instruction
glcd_writeByte(GLCD_CS1, 0xC0); // Specify first RAM line at the top
glcd_writeByte(GLCD_CS2, 0xC0); // of the screen
glcd_writeByte(GLCD_CS1, 0x40); // Set the column address to 0
glcd_writeByte(GLCD_CS2, 0x40);
glcd_writeByte(GLCD_CS1, 0xB8); // Set the page address to 0
glcd_writeByte(GLCD_CS2, 0xB8);
if(mode == ON)
{
glcd_writeByte(GLCD_CS1, 0x3F); // Turn the display on
glcd_writeByte(GLCD_CS2, 0x3F);
}
else
{
glcd_writeByte(GLCD_CS1, 0x3E); // Turn the display off
glcd_writeByte(GLCD_CS2, 0x3E);
}
glcd_fillScreen(OFF); // Clear the display
}
// Purpose: Turn a pixel on a graphic LCD on or off
// Inputs: x - the x coordinate of the pixel
// y - the y coordinate of the pixel
// color - ON or OFF
// Output: 1 if coordinate out of range, 0 if in range
void glcd_pixel(int x, int y, int1 color)
{
BYTE data;
BYTE chip = GLCD_CS1; // Stores which chip to use on the LCD
if(x > 63) // Check for first or second display area
{
x -= 64;
chip = GLCD_CS2;
}
output_low(GLCD_DI); // Set for instruction
bit_clear(x,7); // Clear the MSB. Part of an instruction code
bit_set(x,6); // Set bit 6. Also part of an instruction code
glcd_writeByte(chip, x); // Set the horizontal address
glcd_writeByte(chip, (y/8 & 0b10111111) | 0b10111000); // Set the vertical page address
output_high(GLCD_DI); // Set for data
data = glcd_readByte(chip);
if(color == ON)
bit_set(data, y%8); // Turn the pixel on
else // or
bit_clear(data, y%8); // turn the pixel off
output_low(GLCD_DI); // Set for instruction
glcd_writeByte(chip, x); // Set the horizontal address
output_high(GLCD_DI); // Set for data
glcd_writeByte(chip, data); // Write the pixel data
}
void glcd_showimage2()
{
int16 n=0;
int i,j;
int1 cs=0;
// Loop through the vertical pages
for(i = 0; i <8; ++i)
{
output_low(GLCD_DI); // Set for instruction
glcd_writeByte(GLCD_LEFT, 0b01000000); // Set horizontal address to 0
glcd_writeByte(GLCD_RIGHT, 0b01000000);
glcd_writeByte(GLCD_LEFT, i | 0b10111000);// Set page address
glcd_writeByte(GLCD_RIGHT, i | 0b10111000);
output_high(GLCD_DI); // Set for data
// Loop through the horizontal sections
for(j = 0; j < 128;++j)
{
if(j<64) cs=GLCD_LEFT;else cs=GLCD_RIGHT;
glcd_writeByte(cs,sun[n]); // Turn pixels on or off
//delay_us(5);
n++;
}
}
}
// Purpose: Initialize the LCD.
// Call before using any other LCD function.
// Inputs: OFF - Turns the LCD off
// ON - Turns the LCD on
void glcd_init(int mode)
{
low_Enable;
low_CS1;
low_CS2;
low_DI;
glcd_writeByte(GLCD_LEFT, 0xC0); // Specify first RAM line at the top
glcd_writeByte(GLCD_RIGHT, 0xC0); // of the screen
glcd_writeByte(GLCD_LEFT, 0x40); // Set the column address to 0
glcd_writeByte(GLCD_RIGHT, 0x40);
glcd_writeByte(GLCD_LEFT, 0xB8); // Set the page address to 0
glcd_writeByte(GLCD_RIGHT, 0xB8);
if(mode == ON)
{
glcd_writeByte(GLCD_LEFT, 0x3F); // Turn the display on
glcd_writeByte(GLCD_RIGHT, 0x3F);
}
else
{
glcd_writeByte(GLCD_LEFT, 0x3E); // Turn the display off
glcd_writeByte(GLCD_RIGHT, 0x3E);
}
glcd_fillScreen(OFF); // Clear the display
glcd_update();
}
void glcd_image(long mempointer /*This is the image location in program memory*/)
{ int j, i;
int page = 0xB8;
char chipsel;
char buffer[1];
output_low(GLCD_DI); // Set for instruction
glcd_writeByte(GLCD_CS1, 0x40); // Set the column address to 0
glcd_writeByte(GLCD_CS2, 0x40);
glcd_writeByte(GLCD_CS1, page); // Set the page address to 0
glcd_writeByte(GLCD_CS2, page);
for (j = 0; j < 8; j++, page+=1)
{ output_low(GLCD_DI);
glcd_writeByte(GLCD_CS1, page);
glcd_writeByte(GLCD_CS2, page);
for (i = 0; i < 128; i++)
{
if ( i < 64)
{
chipsel = GLCD_CS1;
}
else
{
chipsel = GLCD_CS2;
}
read_program_memory(mempointer, buffer, 1);
mempointer++;
output_high(GLCD_DI);
glcd_writeByte(chipsel, *buffer);
}
}
}
void glcd_update()
{
unsigned int8 i, j;
unsigned int8 *p1, *p2;
p1 = displayData.left;
p2 = displayData.right;
// Loop through the vertical pages
for(i = 0; i < 8; ++i)
{
output_low(GLCD_DI); // Set for instruction
glcd_writeByte(GLCD_LEFT, 0x40); // Set horizontal address to 0
glcd_writeByte(GLCD_RIGHT, 0x40);
glcd_writeByte(GLCD_LEFT, i | 0xB8); // Set page address
glcd_writeByte(GLCD_RIGHT, i | 0xB8);
output_high(GLCD_DI); // Set for data
// Loop through the horizontal sections
for(j = 0; j < 64; ++j)
{
glcd_writeByte(GLCD_LEFT, *p1++); // Turn pixels on or off
glcd_writeByte(GLCD_RIGHT, *p2++); // Turn pixels on or off
}
}
}
// Purpose: Update the LCD with data from the display arrays
void glcd_update()
{
int i, j;
int *p1, *p2;
p1 = displayData.left;
p2 = displayData.right;
// Loop through the vertical pages
for(i = 0; i < 8; ++i)
{
low_DI;
glcd_writeByte(GLCD_LEFT, 0x40); // Set horizontal address to 0
glcd_writeByte(GLCD_RIGHT, 0x40);
glcd_writeByte(GLCD_LEFT, i | 0xB8); // Set page address
glcd_writeByte(GLCD_RIGHT, i | 0xB8);
high_DI;
// Loop through the horizontal sections
for(j = 0; j < 64; ++j)
{
glcd_writeByte(GLCD_LEFT, *p1++); // Turn pixels on or off
glcd_writeByte(GLCD_RIGHT, *p2++); // Turn pixels on or off
}
}
}
// Purpose: Fill the LCD screen with the passed in color.
// Works much faster than drawing a rectangle to fill the screen.
// Inputs: ON - turn all the pixels on
// OFF - turn all the pixels off
// Dependencies: glcd_writeByte()
void glcd_fillScreen(int1 color)
{
int i, j;
// Loop through the vertical pages
for(i = 0; i < 8; ++i)
{
output_low(GLCD_DI); // Set for instruction
glcd_writeByte(GLCD_CS1, 0b01000000); // Set horizontal address to 0
glcd_writeByte(GLCD_CS2, 0b01000000);
glcd_writeByte(GLCD_CS1, i | 0b10111000); // Set page address
glcd_writeByte(GLCD_CS2, i | 0b10111000);
output_high(GLCD_DI); // Set for data
// Loop through the horizontal sections
for(j = 0; j < 64; ++j)
{
glcd_writeByte(GLCD_CS1, 0xFF*color); // Turn pixels on or off
glcd_writeByte(GLCD_CS2, 0xFF*color); // Turn pixels on or off
}
}
}
