FPGA_VIVADO_SI_VHDL_Mihael_Cristian_Ignat

hh

helloworld.c

#include "xparameters.h"
#include "xgpio.h"
#include "xil_printf.h"

#define LED 0x01 / Assumes bit 0 of GPIO is connected to an LED /
#define LED_DELAY 10000000
#define LED_CHANNEL 1
#define SW_CHANNEL 1

XGpio LedGpio, SwGpio; / The Instance of the GPIO Driver /

int main ( void )
{
int Status;
volatile int Delay;
int sw_value;

/* Initialize the Led GPIO driver */

Status = XGpio_Initialize(&LedGpio, XPAR_LED_GPIO_DEVICE_ID);

if (Status != XST_SUCCESS) {

xil_printf("Led Gpio Initialization Failed\r\n");

return XST_FAILURE;

}

/* Initialize the Switch GPIO driver */

Status = XGpio_Initialize(&SwGpio, XPAR_SW_GPIO_DEVICE_ID);

if (Status != XST_SUCCESS) {

xil_printf("Switch Gpio Initialization Failed\r\n");

return XST_FAILURE;

}

/* Set the direction for all signals as inputs except the LED output */

XGpio_SetDataDirection(&LedGpio, LED_CHANNEL, 0xFFF0);

/* Set the direction for all signals input */

XGpio_SetDataDirection(&SwGpio, SW_CHANNEL, 0xFFFF);

while (1) {

// Read Switch value

sw_value = XGpio_DiscreteRead(&SwGpio, SW_CHANNEL);

/* Send swtich value to leds */

XGpio_DiscreteWrite(&LedGpio, LED_CHANNEL, sw_value);

}

xil_printf("Successfully ran Gpio Example\r\n");
return XST_SUCCESS;
}

demo.vhd

library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_ARITH.ALL;