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//Program to display String on LCD
//Program to interface Serial EEPROM AT24C02 with 8051 microcontroller (AT89C51) #include<reg51.h> #include<intrins.h> //For using [_nop_()]
sbit sda=P1^0; sbit scl=P1^1; sbit led=P0^1; bit ack; sbit led1=P0^2; sbit sav=P0^4; sbit up=P0^5; sbit down=P0^6; sfr lcd_data_pin=0xA0;//p2 port sfr output=0x80;//p0 port sbit rs=P3^1;
sbit en=P3^0; unsigned char reead,write; unsigned int temp,new_value1,new_value,test=0,num=0,i,j; void init() // to initialize the output pins and Timer0 { up=down=1;
TMOD=0x01; TL0=0xf6; TH0=0xFf; IE=0x82; TR0=1; } void delay(unsigned int count) { int i,j; for(i=0;i<count;i++) for(j=0;j<1275;j++); } void lcd_command(unsigned char comm) { lcd_data_pin=comm; en=1; rs=0; delay(1); en=0; } void lcd_data(unsigned char disp) { lcd_data_pin=disp; en=1; rs=1; delay(1); en=0; } lcd_strng(unsigned char *disp) { int x; for(x=0;disp[x]!=0;x++) { lcd_data(disp[x]); } } void lcd_ini() { lcd_command(0x38); // for using 8-bit 2 row LCD delay(5); lcd_command(0x0F); // for display on, cursor blinking delay(5); lcd_command(0x80); delay(5); } void aknowledge() //acknowledge condition { scl=1; _nop_(); _nop_(); scl=0; } void start() //start condition { sda=1; scl=1; _nop_(); //No operation _nop_(); sda=0; scl=0; } void stop() //stop condition { sda=0; scl=1; _nop_(); _nop_(); sda=1; scl=0; } void send_byte(unsigned int value) //send byte serially {
unsigned int i; unsigned int send;
send=value; for(i=0;i<8;i++) { sda=send/128; //extracting MSB send=send<<1; //shiftng left scl=1; _nop_(); _nop_(); scl=0; } ack=sda; //reading acknowledge sda=0; } unsigned char read_byte() //reading from EEPROM serially { unsigned int i; sda=1; reead=0; for(i=0;i<8;i++) { reead=reead<<1; scl=1; _nop_(); _nop_(); if(sda==1) reead++; scl=0; } sda=0; return reead; //Returns 8 bit data here } void save() //save in EEPROM { init(); while(1) { if(up==0&&down==1) //check if up pin is pressed { test++; num=test; new_value=num%10; num=num/10; if(test==9) test=0;
} if(up==1&&down==0) //check if down pin is pressed { test--; num=test; new_value=num%10; num=num/10; if(test==0) test=9;
}
start(); send_byte(0xA0); //device address aknowledge(); send_byte(0x00); //word address aknowledge(); send_byte(new_value); //send data aknowledge(); stop(); if(ack==0) { /* new_value1=new_value1+48; */ led1=1; delay(100); led1=0; delay(100); lcd_command(0x86); lcd_data(new_value);
} else led1=1; aknowledge(); }
void Read() { start(); send_byte(0xA0); aknowledge(); send_byte(0x00); aknowledge(); start(); send_byte(0xA1); //device address aknowledge(); i=read_byte(); aknowledge(); stop(); if(i==new_value) { led=0; delay(100); led=1; delay(100); write=i+48; lcd_command(0xC6); lcd_data(write); } else led=1;
aknowledge(); }
void main() { lcd_ini();
lcd_strng("Sent :"); lcd_command(0xC0); lcd_strng("Read :"); temp=0; while(1) { save(); Read(); } }
you complain. and complain. and complain again.
Because you get it wrong. And get it wrong. And get it wrong again.
can you help.
You're doing everything you possibly could to make sure nobody would want to help you. You've been told so a couple of times, and yet you persist behaving like a 5-year-old.
I'm done with you. Good bye.
instead of stamping your little feet in the floor and crying "help me" why not post properly formatted code and HOPE you have not pissed everybody off by your "I post crap and want you to spend your spare time to decipher it".
Erik
Is this what it's supposed to look like?
I spent 2 minutes to reformat this - because I wanted an answer to the question (maybe)... I wasted more time reading the argument (shame on BOTH of you - stupid poster didn't bother to take the 2 minutes to reformat correctly, and stupid arrogant answer wasted all our time chastising someone - instead of taking 2 minutes to reformat. --- when they should have remembered, that the information on the forums is not only for the original asker, but for anyone searching for answers to the same questions. for shame and a sad statement.
and if the tabs don't look right, sorry they look right in the preview for me.
//Program to display String on LCD //Program to interface Serial EEPROM AT24C02 with 8051 microcontroller (AT89C51) #include<reg51.h> #include<intrins.h> //For using [_nop_()] sbit sda=P1^0; sbit scl=P1^1; sbit led=P0^1; bit ack; sbit led1=P0^2; sbit sav=P0^4; sbit up=P0^5; sbit down=P0^6; sfr lcd_data_pin=0xA0;//p2 port sfr output=0x80;//p0 port sbit rs=P3^1; sbit en=P3^0; unsigned char reead, write; unsigned int temp, new_value1, new_value, test=0, num=0, i, j; void init() // to initialize the output pins and Timer0 { up=down=1; TMOD=0x01; TL0=0xf6; TH0=0xFf; IE=0x82; TR0=1; } void delay(unsigned int count) { int i, j; for(i=0;i<count;i++) for(j=0;j<1275;j++); } void lcd_command(unsigned char comm) { lcd_data_pin=comm; en=1; rs=0; delay(1); en=0; } void lcd_data(unsigned char disp) { lcd_data_pin=disp; en=1; rs=1; delay(1); en=0; } lcd_strng(unsigned char *disp) { int x; for(x=0;disp[x]!=0;x++) { lcd_data(disp[x]); } } void lcd_ini() { lcd_command(0x38); // for using 8-bit 2 row LCD delay(5); lcd_command(0x0F); // for display on, cursor blinking delay(5); lcd_command(0x80); delay(5); } void aknowledge() //acknowledge condition { scl=1; _nop_(); _nop_(); scl=0; } void start() //start condition { sda=1; scl=1; _nop_(); //No operation _nop_(); sda=0; scl=0; } void stop() //stop condition { sda=0; scl=1; _nop_(); _nop_(); sda=1; scl=0; } void send_byte(unsigned int value) //send byte serially { unsigned int i; unsigned int send; send=value; for(i=0;i<8;i++) { sda=send/128; //extracting MSB send=send<<1; //shiftng left scl=1; _nop_(); _nop_(); scl=0; } ack=sda; //reading acknowledge sda=0; } unsigned char read_byte() //reading from EEPROM serially { unsigned int i; sda=1; reead=0; for(i=0;i<8;i++) { reead=reead<<1; scl=1; _nop_(); _nop_(); if(sda==1) reead++; scl=0; } sda=0; return reead; //Returns 8 bit data here } void save() //save in EEPROM { init(); while(1) { if(up==0&&down==1) //check if up pin is pressed { test++; num=test; new_value=num%10; num=num/10; if(test==9) test=0; } if(up==1&&down==0) // check if down pin is pressed { test--; num=test; new_value=num%10; num=num/10; if(test==0) test=9; } start(); send_byte(0xA0); //device address aknowledge(); send_byte(0x00); //word address aknowledge(); send_byte(new_value); //send data aknowledge(); stop(); if(ack==0) { /* new_value1=new_value1+48; */ led1=1; delay(100); led1=0; delay(100); lcd_command(0x86); lcd_data(new_value); } else led1=1; aknowledge(); } } void Read() { start(); send_byte(0xA0); aknowledge(); send_byte(0x00); aknowledge(); start(); send_byte(0xA1); // device address aknowledge(); i=read_byte(); aknowledge(); stop(); if(i==new_value) { led=0; delay(100); led=1; delay(100); write=i +48; lcd_command(0xC6); lcd_data(write); } else led = 1; aknowledge(); } void main() { lcd_ini(); lcd_strng("Sent :"); lcd_command(0xC0); lcd_strng("Read :"); temp=0; while (1) { save(); Read(); } }