void LCDContrast(unsigned char contrast)
{
// LCD Extended Commands.
LCDSend(0x21, SEND_CMD);
// Set LCD Vop (Contrast).
LCDSend(0x80 | contrast, SEND_CMD);
// LCD Standard Commands, horizontal addressing mode.
LCDSend(0x20, SEND_CMD);
}
void LCDFill (unsigned char xs,unsigned char ys,unsigned char width,unsigned char height, unsigned char color)
{
unsigned char i,j;
for (i=0;i < height;i++) // Number of horizontal lines
{
LCDSetXY(xs,ys+i); // Goto start of fill area (Top Left)
LCDSend(PRAMWR); // Write to display
for (j=0;j < width;j++) // pixels per line
LCDSend(color);
}
}
void LCDUpdate(void)
{
int x, y;
for (y = 0; y < 48 / 8; y++)
{
LCDSend(0x80, SEND_CMD);
LCDSend(0x40 | y, SEND_CMD);
for (x = 0; x < 84; x++)
{
LCDSend(LcdMemory[y * 84 + x], SEND_CHR);
}
}
}
void LCDInit(void)
{
// Initialize SPI Interface
Initialize_SPI();
// set pin directions
LCD_CS_MAKE_OUT();
LCD_CS_HIGH();
LCD_DC_MAKE_OUT();
LCD_RES_MAKE_OUT();
// Toggle reset pin
LCD_RES_LOW();
Delay(1000);
LCD_RES_HIGH();
Delay(1000);
// Send sequence of command
LCDSend(0x21, SEND_CMD); // LCD Extended Commands.
LCDSend(0xC8, SEND_CMD); // Set LCD Vop (Contrast). 0xC8
LCDSend(0x04 | !!(LCD_START_LINE_ADDR & (1u << 6)), SEND_CMD); // Set Temp S6 for start line
LCDSend(0x40 | (LCD_START_LINE_ADDR & ((1u << 6) - 1)), SEND_CMD); // Set Temp S[5:0] for start line
//LCDSend( 0x13, SEND_CMD ); // LCD bias mode 1:48.
LCDSend(0x12, SEND_CMD); // LCD bias mode 1:68.
LCDSend(0x20, SEND_CMD); // LCD Standard Commands, Horizontal addressing mode.
//LCDSend( 0x22, SEND_CMD ); // LCD Standard Commands, Vertical addressing mode.
LCDSend(0x08, SEND_CMD); // LCD blank
LCDSend(0x0C, SEND_CMD); // LCD in normal mode.
// Clear and Update
LCDClear();
LCDUpdate();
}
void LCDSetXY(unsigned char x, unsigned char y)
{
LCDSend(PPASET); // page start/end ram
LCDSend(y); // Start Page to display to
LCDSend(131); // End Page to display to
LCDSend(PCASET); // column start/end ram
LCDSend(x); // Start Column to display to
LCDSend(131); // End Column to display to
}
void LCDSetPixel(unsigned char x, unsigned char y, unsigned char color)
{
LCDSetXY(x,y); // Set position
LCDSend(PRAMWR); // Now write the pixel to the display
LCDSend(color); // Write the data in the specified Color
}
void LCDInit(void)
{
int i;
LCDReset();
LCDSend(PSWRESET); // software reset
SpinDelay(100);
LCDSend(PSLEEPOUT); // exit sleep mode
LCDSend(PBSTRON); // booster on
LCDSend(PDISPON); // display on
LCDSend(PNORON); // normal on
LCDSend(PMADCTL); // rotate display 180 deg
LCDSend(0xC0);
LCDSend(PCOLMOD); // color mode
LCDSend(0x02); // 8bpp color mode
LCDSend(PSETCON); // set contrast
LCDSend(0xDC);
// clear display
LCDSetXY(0,0);
LCDSend(PRAMWR); // Write to display
i=LCD_XRES*LCD_YRES;
while(i--) LCDSend(WHITE);
// test text on different colored backgrounds
LCDString(" The quick brown fox ", (char *)&FONT6x8,1,1+8*0,WHITE ,BLACK );
LCDString(" jumped over the ", (char *)&FONT6x8,1,1+8*1,BLACK ,WHITE );
LCDString(" lazy dog. ", (char *)&FONT6x8,1,1+8*2,YELLOW ,RED );
LCDString(" AaBbCcDdEeFfGgHhIiJj ", (char *)&FONT6x8,1,1+8*3,RED ,GREEN );
LCDString(" KkLlMmNnOoPpQqRrSsTt ", (char *)&FONT6x8,1,1+8*4,MAGENTA,BLUE );
LCDString("UuVvWwXxYyZz0123456789", (char *)&FONT6x8,1,1+8*5,BLUE ,YELLOW);
LCDString("`-=[]_;',./~!@#$%^&*()", (char *)&FONT6x8,1,1+8*6,BLACK ,CYAN );
LCDString(" _+{}|:\\\"<>? ",(char *)&FONT6x8,1,1+8*7,BLUE ,MAGENTA);
// color bands
LCDFill(0, 1+8* 8, 132, 8, BLACK);
LCDFill(0, 1+8* 9, 132, 8, WHITE);
LCDFill(0, 1+8*10, 132, 8, RED);
LCDFill(0, 1+8*11, 132, 8, GREEN);
LCDFill(0, 1+8*12, 132, 8, BLUE);
LCDFill(0, 1+8*13, 132, 8, YELLOW);
LCDFill(0, 1+8*14, 132, 8, CYAN);
LCDFill(0, 1+8*15, 132, 8, MAGENTA);
}
