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Altera_Forum's avatar
Altera_Forum
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13 years ago

help on rs232 communication niosII

How do I get to communicate with the Nios II via serial pc?

Basically I would like nios II sends a string to the serial port.

I use The Nios® II Software Build Tools (SBT) for eclipse.

I wrote the following code:

# include<stdio.h>

int main(){

printf("Hello world");

}

and then I tried to change the standard input and output to UART1 standart but nothing is written to the serial.

you could tell me some tutorials on the serial communication between the PC and nios II?

thanks in advance for help

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  • Altera_Forum's avatar
    Altera_Forum
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    12 years ago

    make sure you have add the correct header files ....for fopen and fclose

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    12 years ago

    Hi guy,

    I figured out what was wrong with the project.

    Firstly, I setted up the wrong pins on quartus.

    Then, instead of using 'fopen' and 'fclose' commands, I used "IOWR_ALTERA_AVALON_UART_RXDATA(UART_0_BASE, (data-to-be-send))".

    It worked!