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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


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










euem789's avatar
euem789
Icon for New Contributor rankNew Contributor
5 years ago

Hi, eric

I didn't solve the problem yet,

and only knew how to perform generating hex->bmp file // sobel -edge-detect

through quartus testbench (altera-modelsim using fopen&fclose without NIOS)

I think I have to study more to ask detail & intuitive question later.

thanks for every help