Discussion in "Project Help" started by    kira113    Aug 19, 2017.
Sat Aug 19 2017, 08:52 AM
#1
hello everyone
i write a simple program using c language for read analog value from adc0804 then convert that value to three decimal number and then display them on 3 seven_seg but when i compile the program using keil ide i got some error ( like 'multiple public definition ')
can anyone help me with it .
#include <REGX51.H>
sbit cs   = P3^7 ;
sbit WRIT	= P3^5 ;
sbit READ	= P3^6 ;
sbit inter= P3^4 ;
#define adc_port  P1 
#define seg_port  P0 

char ones,tens,hunds,digital_value,rfd;
int table[16]={0x40,0x79,0x24,0x30,0x19,0x12,0x02,0x78,0x00,0x10,0x08,0x03,0x46,0x21,0x06,0x0e};
void conv();
void read_adc();
void delay_us(int);
void delay_ms(int);
void delay_sec( char);
void div23dig(char);
void disp ( char , char, char );
void main(){
							
							adc_port = 0xff	;		//init adc_Port as input
									P0 = 0X0			;//init p0 as output
									P3= 0x10		;	//init p3.4 as input
								while(1){
									
									
										conv();
										read_adc();
										div23dig(digital_value);
									  disp(ones,tens,hunds);
										delay_sec(1);
									 
										
												}
            }

void conv()
	{
		cs=0;
		WRIT=0;
		WRIT=1;
		cs=1;
		while(inter);
	}

void read_adc()
	{
			cs=0;
			READ=0;
			digital_value=adc_port;
			READ=1;
			cs=1;
  }

void delay_us( int us_count)
 {
    while(us_count!=0)
      {
         us_count--;
       }
   }
void delay_ms( int ms_count)
 {
        while(ms_count!=0)
         {
            delay_us(112);   /*delay_us is called to generate 1ms delay*/
             ms_count--;
            }
   }
void delay_sec( char sec_count)
 {

     while(sec_count!=0)
      {
         delay_ms(1000);    /*delay_ms is called to generate 1sec delay*/
         sec_count--;
        }
 }
void div23dig(char x )
 { 
		hunds= digital_value/100 ;
		rfd = digital_value%100 ;
	  tens = rfd/10;
		ones = rfd%10;
	
 }
void disp ( char x , char y ,char z )
 {  char i; 
		i = table[ones] ;
	  seg_port = i ;
	  P2=P2|1;
	  delay_ms(16);
		P2=P2&254;
	  i=table[tens];
	 seg_port=i;
	  P2=P2|2;
		delay_ms(16);
	   P2=P2&253;
		i= table[hunds];
	  seg_port=i;
	  P2=P2|4;
		delay_ms(16);
	  P2=P2&251;
 
 }



[ Edited Wed Aug 23 2017, 01:26 PM ]
Sun Aug 20 2017, 08:31 PM
#2

"when i compile the program using keil ide i got some error
( like 'multiple public definition ')"

When asking for help, giving the exact error message is important.
It is better to zip and post your full code,
as copying off the web page is not 100% successful.

I tried your code and got unused variables warnings for call
"void disp ( char x , char y ,char z )"
x,y and z are not used in the procedure.

I notice you declared it as
"void disp ( char , char, char );" without naming the variables.
That may be legal, but makes it harder to spot errors, as in the case above.


[ Edited Sun Aug 20 2017, 08:35 PM ]
Wed Aug 23 2017, 01:30 PM
#3
It will be easier to help if you can post the complete error message with line number. So we know which line is generating the error.
By the way, it's better to define "table" as const since you're not going to change it but just use it as a reference for digits.
 kira113 like this.
Sun Oct 08 2017, 08:33 PM
#4
actually i solve this problem , and it was just test for my project which is"power meter"
so i could measure the ac voltage and display it on 3 7-seg , and then moved to measure current using CT 1000:1 and it worked very good with some error , but when i tried to merge current and voltage together i used tow adc0804( i could to use adc0808 but the time was very short to do that ) and connect it with same PORT on micro , i will attach the schematic and the code to understand what i'm trying to say so maybe you can help me .
Sun Oct 08 2017, 08:40 PM
#5
these are my schematic and c source file , and i hope to help me because i tried to solve it for two weeks and there is no progress at all
Sun Oct 08 2017, 08:42 PM
#6
https://drive.google.com/open?id=0B_IGcFftMx3fYV9VTmw5dkp2Q2s


[ Edited Sun Oct 08 2017, 08:45 PM ]
Thu Oct 12 2017, 01:04 AM
#7
I don't think the 0804 works as it should in Proteus.
I ended up greatly simplifying your design to get it working.
The good news is that you have a working start point.
Use the virtual serial port in Proteus to print messages to help
with debugging.

Attachment

Get Social

Information

Powered by e107 Forum System

Conversation

ExperimenterUK
Mon Jan 07 2019, 03:31 AM
@REVOCATUS please post in the AVR forum
Mon Dec 24 2018, 09:25 AM
REVOCATUS MATEMU
sorry I mean referee boards for player substitution
Mon Dec 24 2018, 09:24 AM
REVOCATUS MATEMU
hi am.looking how to build referee by using Atmega 328 and its codes
Sat Dec 15 2018, 01:45 PM
Arslan ayoub
Hii ,, can I get the simulation of numeric keypad lock on proteus
ExperimenterUK
Mon Dec 03 2018, 05:17 PM
Please post questions in the forum. The chat box is for chat
Mon Dec 03 2018, 06:43 AM
help!me!
help! I don't understand busy flag!
Sun Dec 02 2018, 08:01 PM
ile
hello
Mon Nov 12 2018, 05:58 AM
Pavan_user
i have seen your replica of I2C programming using AT89C51 but i am unable to understand the "ack_bit" variable usage ...looks like it is always 1...can you elaborate how acknowledgment is working....
bgk3678
Tue Nov 06 2018, 02:36 PM
kindly any one give solution for my problem
ExperimenterUK
Mon Nov 05 2018, 09:48 PM
Pins high is the normal state. You need a program to set them low

Downloads

Comments

Kheirodin
Tue Jan 22 2019, 11:54 PM
garfield0929
Sun Jan 20 2019, 12:48 AM
servprov
Thu Jan 17 2019, 06:44 AM
marcomilazzo
Wed Jan 16 2019, 04:21 PM
sandhyashree
Wed Jan 16 2019, 04:04 PM
SONACHAI1234
Sun Jan 06 2019, 08:14 AM
manan.gulyaani
Tue Jan 01 2019, 07:58 AM
etech
Sun Dec 30 2018, 07:44 PM

Online

Guests: 45, Members: 0 ...

most ever online: 182184
(Members: , Guests: 182184) on 06 Aug 2010: 05:37 AM

Members: 38040
Newest member: Kheirodin
Forum Activity
ExperimenterUK Avatar
Posted By ExperimenterUK
Sun Jan 06 2019, 10:37 PM
Which 8051 chip are you using ?
SONACHAI1234 Avatar
Posted By SONACHAI1234
Sun Jan 06 2019, 08:21 AM
Hi,By mistakenly i burn rx program in my 8051 micr...
ExperimenterUK Avatar
Posted By ExperimenterUK
Wed Dec 19 2018, 06:27 PM
Nobody knows?sifirsekizThe problem is that you are...
sifirsekiz Avatar
Posted By sifirsekiz
Wed Dec 19 2018, 12:15 PM
sifirsekiz Avatar
Posted By sifirsekiz
Sun Dec 16 2018, 11:13 PM
Guys pleaseeeee :((
sifirsekiz Avatar
Posted By sifirsekiz
Sat Dec 15 2018, 07:09 PM
HiThe pulse-sensor-amped has an analogue output.Th...
ExperimenterUK Avatar
Posted By ExperimenterUK
Sat Dec 15 2018, 07:01 PM
HiThe pulse-sensor-amped has an analogue output.Th...
sifirsekiz Avatar
Posted By sifirsekiz
Sat Dec 15 2018, 09:02 AM
and ı have pulse sensor one out but anolog use 805...
sifirsekiz Avatar
Posted By sifirsekiz
Sat Dec 15 2018, 08:56 AM
HiMembers can supply code and diagrams if they wan...
ExperimenterUK Avatar
Posted By ExperimenterUK
Fri Dec 14 2018, 11:54 PM
HiMembers can supply code and diagrams if they wan...