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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;
}

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