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Dolemy's avatar
Dolemy
Icon for New Contributor rankNew Contributor
2 years ago

IOWR and IORD Problem (with Image)

Hello! I am having difficulty using the IOWR and IORD functions in NIOS II. I have created a custom Uart Tx IP and I want to communicate with my computer through it. then, I have included it in NI...
EBERLAZARE_I_Intel's avatar
EBERLAZARE_I_Intel
Icon for Regular Contributor rankRegular Contributor
2 years ago

Hi,


Can you also provide the C code and your project file? I am trying to understand your C code flow.


  • Dolemy's avatar
    Dolemy
    Icon for New Contributor rankNew Contributor
    2 years ago

    Here is my C code.

    //////////////////

    #include "sys/alt_stdio.h"
    #include <system.h>
    #include <stdio.h>
    #include <io.h>
    #include <unistd.h>
    /*void Uart_Tx(char ch)
    {
    IOWR(MY_UART_TX_0_BASE,0,0x41);
    usleep(1000000);
    printf("DATA: %c\n", IORD(MY_UART_TX_0_BASE,0));
    }
    */
    int main()
    {
    alt_putstr("Hello from Nios II!\n");
    IOWR(MY_UART_TX_0_BASE,0,0xFF);
    /* Event loop never exits. */
    while (1){
    IOWR(MY_UART_TX_0_BASE,0,0x42);
    usleep(100000);
    printf("DATA: %c\n", IORD(MY_UART_TX_0_BASE,0));
    }
    return 0;
    }

    //////////////////