I am trying to do a simple LED blink via GPIO. I have attached images of my block design, Address editor for the axi_gpio and the constraints file. I am using XSDK 2019.1 and Vivado 2019.1. I am trying to run this on an UltraZed board by Avnet. The code is as below. While trying to set the direction of the GPIO I keep running into the issue where it tries to do this --> *LocalAddr = Value; in Xil_Out32 and it hangs. Based on the comments from this post --> https://forums.xilinx.com/t5/Vivado-TCL-Community/Stuck-at-Xil-Out32/m-p/471656#M1612 I modified the constraints for each led output but I still run into the issue. I also tried changing the optimization to O0 in the bsp as LocalAddr appears as N/A while watching it. Is there anyway to resolve this?
#include <stdio.h>
#include "platform.h"
#include "xparameters.h"
#include "xgpio.h"
#include "xstatus.h"
#define GPIO_DEVICE_ID XPAR_AXI_GPIO_0_DEVICE_ID
#define LED 0x01
#define LED_DELAY 100000000
#define LED_CHANNEL 1
XGpio Gpio; // Instantiated GPIO device driver instance
int LEDOutput()
{
volatile int Delay;
int Status;
int led = LED;
Status = XGpio_Initialize(&Gpio, GPIO_DEVICE_ID);
if ( Status != XST_SUCCESS ) { return XST_FAILURE; }
//Set direction for the LED output
XGpio_SetDataDirection(&Gpio, LED_CHANNEL, 0x00);
//Infinitive loop to blink LEDs
while (1) {
while(led<=128){
// write output to the LEDs
XGpio_DiscreteWrite(&Gpio, LED_CHANNEL, led);
// Delay so that LEDs blinking is visible
led = led<<1;
for (Delay = 0; Delay < LED_DELAY; Delay++) {;}
}
led=LED;
}
printf("Oop! Never get into here\n\r");
return XST_SUCCESS;
}
int main()
{
int Status;
init_platform();
Status = LEDOutput();
if ( Status != XST_SUCCESS) {
print("GPIO output the the LEDs failed!\n\r");
}
cleanup_platform();
return 0;
}
