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ADC and LCD interfacing issue

I have written a code for getting input from ADC 0804 and then display the value on 16x2 lcd
I need help in writing a function to convert ADC output into a value which can be displayed in 16x2 lcd. ADC is used to convert temperature output from lm35. 5V supply voltage and Vref=2.5V.
I need code for - convert_display(value)
Also keil compiler gives error - adc_inter.c(16): error C141: syntax error near '='. I am unable to understand what should be done?

#include <reg51.h>
#include <stdio.h>
#include <string.h>
void msdelay(unsigned int time);
void convert_display(unsigned char value);
#define RD P2^5;
#define WR P2^6;
#define INTR P2^7;
unsigned long MYDATA;

void main()
{ unsigned char value; MYDATA = P1; MYDATA = 0xFF; INTR = 1; RD = 1; WR = 1; while(1) { WR=0; WR=1; while(INTR==1) { } RD=0; value=MYDATA; convert_display(value); RD=1; }
}

void msdelay(unsigned int time)
{ unsigned char x,y; for(x=0;x<=time;x++) for(y=0;y<=1275;y++);
}

Parents
  • I have written a code. At last, no errors and no warnings. Now I need function definition for "convert_display" Please help me. I have to convert temperature from lm35 ->ADC0804(ref voltage 2.28V) ->89s51and display it on 16x2 lcd display.

    
    #include <REGX51.h>
    #include <stdio.h>
    #include <string.h>
    void msdelay(unsigned int time);
    void convert_display(unsigned char value);
    #define SET(reg, bit) reg |=  (1 << bit)  // Sets a bit in reg.
    #define CLR(reg, bit) reg &= ~(1 << bit)  // Clears a bit in reg.
    #define INTR P2^7
    #define RD P2^5
    #define WR P2^6
    #define MYDATA P0
    void main()
    {
            unsigned char value;
            SET(P2,5);
            SET (P2,6);
            SET (P2,7);
            MYDATA =0xFF;
            while(1)
            {
                    CLR(P2,6); SET(P2,6);
                    while(INTR==1)
                    {
                    }
                    CLR(P2,5);
                    value=MYDATA;
                    convert_display(value);
                    SET(P2,5);
            }
    }
    
    void convert_display(unsigned char value)
    {
    
    }
    
    void msdelay(unsigned int time)
    {
            unsigned char x,y;
            for(x=0;x<=time;x++)
            for(y=0;y<=1275;y++);
    }
    
    
    

Reply
  • I have written a code. At last, no errors and no warnings. Now I need function definition for "convert_display" Please help me. I have to convert temperature from lm35 ->ADC0804(ref voltage 2.28V) ->89s51and display it on 16x2 lcd display.

    
    #include <REGX51.h>
    #include <stdio.h>
    #include <string.h>
    void msdelay(unsigned int time);
    void convert_display(unsigned char value);
    #define SET(reg, bit) reg |=  (1 << bit)  // Sets a bit in reg.
    #define CLR(reg, bit) reg &= ~(1 << bit)  // Clears a bit in reg.
    #define INTR P2^7
    #define RD P2^5
    #define WR P2^6
    #define MYDATA P0
    void main()
    {
            unsigned char value;
            SET(P2,5);
            SET (P2,6);
            SET (P2,7);
            MYDATA =0xFF;
            while(1)
            {
                    CLR(P2,6); SET(P2,6);
                    while(INTR==1)
                    {
                    }
                    CLR(P2,5);
                    value=MYDATA;
                    convert_display(value);
                    SET(P2,5);
            }
    }
    
    void convert_display(unsigned char value)
    {
    
    }
    
    void msdelay(unsigned int time)
    {
            unsigned char x,y;
            for(x=0;x<=time;x++)
            for(y=0;y<=1275;y++);
    }
    
    
    

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