[AVR] Atmega16 with Proteus 8 virtual terminal !

mzannerni · Mar 19, 2014

Hello guys,
I used to program with bascom language and now i just start using the C language,
I wrote a code to send data using USART,and i tried to simulate it on proteus 8 virtual terminal but it is not working ..
Could you figure out my mistake !

i will post my code here :

Code C - [expand]
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#include <avr/io.h>
#include <stdio.h>
 
unsigned char data;
int delay;
 
// function to send data
void USART_TRANS (unsigned char data)
{
    while (!( UCSRA & (1<<UDRE)));   // wait while register is free
    UDR = data;   
                                       // load data in the register
}
// function to receive data
unsigned char USART_REC (void)
{
    while(!(UCSRA) & (1<<RXC));                   // wait while data is being received
    return UDR;                                   // return 8-bit data
}
 
int main(void)
{
    
    
UCSRA=(0<<RXC) | (0<<TXC) | (0<<UDRE) | (0<<FE) | (0<<DOR) | (0<<UPE) | (0<<U2X) | (0<<MPCM);
UCSRB=(0<<RXCIE) | (0<<TXCIE) | (0<<UDRIE) | (1<<RXEN) | (1<<TXEN) | (0<<UCSZ2) | (0<<RXB8) | (0<<TXB8);
UCSRC=(1<<URSEL) | (0<<UMSEL) | (0<<UPM1) | (0<<UPM0) | (0<<USBS) | (1<<UCSZ1) | (1<<UCSZ0) | (0<<UCPOL);
UBRRH=0x00;
UBRRL=0X33; //BAUD 9600 AND CRYSTAL 8.000.000
 
data="Hello !";  
    
    while(1)
    {
  
        USART_TRANS(data);
        for (delay=0;delay=1000;delay++)
        ;
    
    }
}

I adjest the proteus terminal to the same settings,same baud ! :roll:
is there any better program to simulate my program ?!

milan.rajik · Mar 19, 2014

Code C - [expand]
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#include <avr/io.h>
#include <stdio.h>
 
unsigned char gdata[] = "Hello";
unsigned long delay;
 
// function to send data
void USART_TRANS (unsigned char ldata)
{
    while (!( UCSRA & (1 << UDRE)));   // wait while register is free
    UDR = ldata;   
                                       // load data in the register
}
 
// function to receive data
unsigned char USART_REC (void)
{
    while(!(UCSRA) & (1 << RXC));                   // wait while data is being received
    return UDR;                                   // return 8-bit data
}
 
// function to send data
void USART_TRANS_STRING (unsigned char *ldata)
{
        while(*ldata){
        USART_TRANS(*ldata++);
    }
}
 
int main(void)
{
    
     
    UCSRA = (0 << RXC)   | (0 << TXC)   | (0 << UDRE)   | (0 << FE)   | (0 << DOR)  | (0 << UPE)   | (0 << U2X)   | (0 << MPCM);
    UCSRB = (0 << RXCIE) | (0 << TXCIE) | (0 << UDRIE)  | (1 << RXEN) | (1 << TXEN) | (0 << UCSZ2) | (0 << RXB8)  | (0 << TXB8);
    UCSRC = (1 << URSEL) | (0 << UMSEL) | (0 << UPM1)   | (0 << UPM0) | (0 << USBS) | (1 << UCSZ1) | (1 << UCSZ0) | (0 << UCPOL);
    UBRRH = 0x00;
    UBRRL =0X33; //BAUD 9600 AND CRYSTAL 8.000.000
 
    
        while(1)
        {
  
            USART_TRANS_STRING(gdata);
 
            for (delay = 0; delay = 1000000; delay++);
    
        }
}

mzannerni · Mar 19, 2014

milan.rajik said:

Code C - [expand]
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#include <avr/io.h>
#include <stdio.h>
 
unsigned char gdata[] = "Hello";
unsigned long delay;
 
// function to send data
void USART_TRANS (unsigned char ldata)
{
    while (!( UCSRA & (1 << UDRE)));   // wait while register is free
    UDR = ldata;   
                                       // load data in the register
}
 
// function to receive data
unsigned char USART_REC (void)
{
    while(!(UCSRA) & (1 << RXC));                   // wait while data is being received
    return UDR;                                   // return 8-bit data
}
 
// function to send data
void USART_TRANS_STRING (unsigned char *ldata)
{
        while(*ldata){
        USART_TRANS(*ldata++);
    }
}
 
int main(void)
{
    
     
    UCSRA = (0 << RXC)   | (0 << TXC)   | (0 << UDRE)   | (0 << FE)   | (0 << DOR)  | (0 << PE)   | (0 << U2X)   | (0 << MPCM);
    UCSRB = (0 << RXCIE) | (0 << TXCIE) | (0 << UDRIE)  | (1 << RXEN) | (1 << TXEN) | (0 << UCSZ2) | (0 << RXB8)  | (0 << TXB8);
    UCSRC = (1 << URSEL) | (0 << UMSEL) | (0 << UPM1)   | (0 << UPM0) | (0 << USBS) | (1 << UCSZ1) | (1 << UCSZ0) | (0 << UCPOL);
    UBRRH = 0x00;
    UBRRL =0X33; //BAUD 9600 AND CRYSTAL 8.000.000
 
    
        while(1)
        {
  
            USART_TRANS_STRING(gdata);
 
            for (delay = 0; delay < 1000000; delay++);
    
        }
}

Thank you so much your code works perfectly !
could you help me to send a variable ? which contains a variable number ?
and also all the letters appear next to each other is there anyway to pass a line ?

milan.rajik · Mar 19, 2014

could you help me to send a variable ? which contains a variable number ?

Integer or float value?

You have to convert each digit of the number to char by adding 0x30 and then form a string.

and also all the letters appear next to each other is there anyway to pass a line ?

Code C - [expand]
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unsigned char gdata[] = "Hello\r\n";
 
USART_TRANS_STRING(gdata);

or

Code C - [expand]
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unsigned char gdata[] = "Hello";
 
USART_TRANS_STRING(gdata);
USART_TRANS(0x13);
USART_TRANS(0x10);

mzannerni · Mar 19, 2014

Thank you for your fast replay first of all ..
Actually i want to send a variable integer for now ..
I was trying to understand the way the u have used to send the string :
"you used a pointer Ldata ? and you made the Ldata=gdata while calling the function
as a result Ldata is pointing to gdata[0] ??? i hope i am right ?"
Thank you so much !

[AVR] Atmega16 with Proteus 8 virtual terminal !

mzannerni

Newbie level 3

milan.rajik

Banned

mzannerni

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milan.rajik

Banned

mzannerni

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Similar threads

Code C - [expand]
1 2 3	unsigned char gdata[] = "Hello\r\n"; USART_TRANS_STRING(gdata);

Code C - [expand]
1 2 3 4 5	unsigned char gdata[] = "Hello"; USART_TRANS_STRING(gdata); USART_TRANS(0x13); USART_TRANS(0x10);

[AVR] Atmega16 with Proteus 8 virtual terminal !

mzannerni

Newbie level 3

milan.rajik

Banned

mzannerni

Newbie level 3

milan.rajik

Banned

mzannerni

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