Forum Discussion

euem789's avatar
euem789
Icon for New Contributor rankNew Contributor
6 years ago
Solved

file io with NIOS II

Hi all I wrote a code to read the text file for implementing in FPGA board (DE1-SOC) with NIOS II , but when I build the project, the elf file wasn't generated. here's my code ----------...
  • EricMunYew_C_Intel's avatar
    EricMunYew_C_Intel
    5 years ago

    Hi, Dong Wook


    You are right.


    However, there is another way, ie using a character-mode device like UART.


    Below example is to write characters to a UART called uart1. You can find the device name (/dev/uart1) in the system.h

    #include <stdio.h>

    #include <string.h>


    int main (void)

    {

    char* msg = "hello world";

    FILE* fp;

    fp = fopen ("/dev/uart1", "w");

    if (fp!=NULL) { fprintf(fp, "%s",msg); fclose (fp);}

    return 0;

    }


    Thanks.


    Eric










EricMunYew_C_Intel's avatar
EricMunYew_C_Intel
Icon for Frequent Contributor rankFrequent Contributor
5 years ago

Hi, Dong Wook


Thanks for your appraisal, and I noted.

For my recommendation below, you may consider using a HyperTerminal or other tools to transmit character by character from your PC to the target FPGA hardware board. Then you may apply fread() or fscanf() instead in your code to read from your PC to the target FPGA board.


Please let me know if you have question.

Yon can proceed to open a new ticket, welcome.


Again thanks for your appraisal.


Thanks.


Eric