Hello
I have confused in the coding of the Serial Graphical LCD on NXP P89V664.
Can any one help ????
the code is
#include<reg52.H> #include<stdio.h> #include<intrins.h> // #define unsigned char unsigned char // 0~255 // #define unsigned int unsigned int // 0~65535 sbit _CS = P2^3; sbit _RST = P2^2; sbit A0 = P2^1; sbit SCK = P4^0; sbit DIN = P4^2; unsigned char ContrastLevel; // for contrast setting level //----------------------------------- // dispaly data (128x64) //----------------------------------- unsigned char code Logo[]={ ....0x15,0x06,0x00,0x00,0x10,0x1F,0x10,0x00,0x00,0x12,0x15,0x15,0x15,0x88,0xC0 }; //----------------------------------- // Delay Routine //----------------------------------- void delayms(unsigned int m) // 12MHz Xtal, close to ms value { unsigned int j; unsigned int i; for(i=0; i<m; i++) for(j=0; j<109; j++) _nop_(); } //----------------------------------- // IO Routine //----------------------------------- void lcd_cmd(unsigned char Command) //send command { SCK = 1; A0 = 0; _CS = 0; DIN = Command & 0x80; SCK= 0; SCK= 1; DIN = Command & 0x40; SCK= 0; SCK= 1; DIN = Command & 0x20; SCK= 0; SCK= 1; DIN = Command & 0x10; SCK= 0; SCK= 1; DIN = Command & 0x08; SCK= 0; SCK= 1; DIN = Command & 0x04; SCK= 0; SCK= 1; DIN = Command & 0x02; SCK= 0; SCK= 1; DIN = Command & 0x01; SCK= 0; SCK= 1; _CS = 1; } void lcd_data(unsigned char DData) //send data { SCK= 1; A0 = 1; _CS = 0; DIN = DData & 0x80; SCK= 0; SCK= 1; DIN = DData & 0x40; SCK= 0; SCK= 1; DIN = DData & 0x20; SCK= 0; SCK= 1; DIN = DData & 0x10; SCK= 0; SCK= 1; DIN = DData & 0x08; SCK= 0; SCK= 1; DIN = DData & 0x04; SCK= 0; SCK= 1; DIN = DData & 0x02; SCK= 0; SCK= 1; DIN = DData & 0x01; SCK= 0; SCK= 1; _CS = 1; } //----------------------------------- // Write a Screen //----------------------------------- void WriteScreen(unsigned char *DisplayData) // DisplayData should be 164x64/8 = 1312byte { unsigned char TempData; unsigned char i, j; for(i=0;i<8;i++) { lcd_cmd(0xb0 | i); // select page 0~7 lcd_cmd(0x10); // start form column 4 lcd_cmd(0x00); // (2byte command) for(j=0;j<128;j++) { TempData=(*(DisplayData+(i*128)+j)); lcd_data(TempData); } } } //----------------------------------- // Contrast control //----------------------------------- void LCD_Darker(void) { if (ContrastLevel<0x3F) { ContrastLevel++; } lcd_cmd(0x81); // E-Vol setting lcd_cmd(ContrastLevel); // (2byte command) } void LCD_Lighter(void) { if (ContrastLevel>0x00) { ContrastLevel--; } lcd_cmd(0x81); // E-Vol setting lcd_cmd(ContrastLevel); // (2byte command) } //----------------------------------- // Init LCD module //----------------------------------- void initLCDM(void) { _RST=1; // hardware reset LCD module _RST=0; delayms(1); _RST=1; delayms(800); ContrastLevel=0x17; // default Contrast Level 1a lcd_cmd(0xab); //new lcd_cmd(0xaf); // display on lcd_cmd(0x40); // display start line=0 lcd_cmd(0xc8); // Common output mode select= reverse lcd_cmd(0xa6); // normal display lcd_cmd(0xa4); // Duisplay all point = off lcd_cmd(0xa3); // LCD bias = 1/9 a2 lcd_cmd(0x2f); // Power control = all on lcd_cmd(0x25); // Rab Ratio 26 lcd_cmd(0x81); // E-Vol setting lcd_cmd(ContrastLevel); // (2byte command) } //----------------------------------- // Main Program //----------------------------------- void main() { SP=0x60; EA = 0; // disable interrupts _CS =1; _RST =1; A0 =1; SCK =1; DIN =1; initLCDM(); WriteScreen(Logo); while(1) { } } //end of program
The error it shoes that P4 is an undefined identifier. error C202
This is the code for the serial graphical LCD I am using for sending the serial data to the lcd on four lines but it does not give any result at the end.
It shows the raster image on the graphical lcd so please help for further for sending the lcd data on four lines
#include <stdio.h> #include <config.h> #include <lcd128x64.h> // definitions for the LCD controller #include <fonts.h> // definitions for the fonts //----------------------------------------------------------------------------- // MAIN Routine //----------------------------------------------------------------------------- sbit SWT = P2^4; /* eval board switch */ void main (void) { config(); // setup all the SFR initialization lcd_init(); // initialize LCD display lcd_erase(); // erase the display while(1) { lcd_clear_area(SCRN_LEFT,SCRN_TOP,SCRN_RIGHT,SCRN_BOTTOM); lcd_box(SCRN_LEFT,SCRN_TOP,SCRN_RIGHT,SCRN_BOTTOM); lcd_box(SCRN_LEFT+2,SCRN_TOP+2,SCRN_RIGHT-2,SCRN_BOTTOM-2); lcd_text(4,4,FONT_NINE_DOT," Priyank Rathod"); lcd_text(6,29,FONT_NINE_DOT,"128x64"); lcd_text(60,32,FONT_SEVEN_DOT," Toggling"); lcd_text(17,52,FONT_SIX_DOT,"">http://www.google.com"); lcd_update(SCRN_TOP,SCRN_BOTTOM); while(SWT == 1); while(SWT == 0); lcd_invert_area(SCRN_LEFT+3,SCRN_TOP+3,SCRN_RIGHT-3,SCRN_BOTTOM-3); lcd_update(SCRN_TOP,SCRN_BOTTOM); while(SWT == 1); while(SWT == 0); } }