Uart simmulation on proteus using atmega 32

[belal elkady]

it's the first code in UART so i'm trying to simulate it and i use the virtual terminal on proteus

but nothing appear i don't know why ??

the code :

/*
* Uart_Driver.c
*
* Created: 7/29/2013 4:33:00 PM
* Author: Belak Magdy
*/


#include <avr/io.h>
void UARTinit();
void UARTsender(char data);
char UARTreceiver();


void UARTinit(){
UBRRH=0X03; // 1200 bps & 16MHZ clock frequency
UBRRL=0X41;
UCSRB|=(1<<RXEN)|(1<<TXEN);
UCSRC|=(1<<URSEL)|(3<<UCSZ0);
}

void UARTsender(char data){

while(!(UCSRA & (1<<UDRE))) {

}

UDR = data ;


}

char UARTreceiver(){

while (!(UCSRA & (1<<RXC))){

}

return UDR;


}

that's very simple app:

#include <avr/io.h>
#include <stdio.h>

void main (){
UARTinit();


while(1){
UARTsender("b");
UARTreceiver();
}

}

 

[Venkadesh_M]

did you select the baudrate settings in virtual terminal and frequency in Chip??

then it must be the problem of

---

Code C - [expand]
1
while(!(UCSRA & (1<<UDRE))) {}

---

try to take this commanded if still not works check the config, then there is no uart in the library device..

 

[belal elkady]

did you select the baudrate settings in virtual terminal and frequency in Chip??

then it must be the problem of

---

Code C - [expand]
1
while(!(UCSRA & (1<<UDRE))) {}

---

try to take this commanded if still not works check the config, then there is no uart in the library device..

yes, i did and i don't find any problem in the code . please take a look at the simulation

 

[shihab_leo]

Hi belal elkady
I haven't checked your baud rate and other settings yet But your UARTsender function expects a char and you are passing it a string
try changing

---

Code C - [expand]
1
UARTsender("b");

---

to

---

Code C - [expand]
1
UARTsender('b');

---

 

[Venkadesh_M]

Hi belal elkady
I haven't checked your baud rate and other settings yet But your UARTsender function expects a char and you are passing it a string
try changing

---

Code C - [expand]
1
UARTsender("b");

---

to

---

Code C - [expand]
1
UARTsender('b');

---

How did I missed it, It will show an compilation error... :smile:

 

[belal elkady]

I changed it but it still not working

i use a crystal of 16mhz and the baud rate is 1200 bps

 

[jayanth.devarayanadurga]

Data is inverted? See if invert is selected in you PC terminal software.

https://www.kanda.com/AVR-C-Code-UART.php

https://extremeelectronics.co.in/av...vr-microcontrollers-reading-and-writing-data/

Use COMPIM of Proteus if you want to send data from Proteus to Hyper Terminal.

 

[Venkadesh_M]

post your proteus file with compiled source code...