Microblaze Application - Switches, Pushes & LEDs

/*
 * Copyright (c) 2018 Matej "B-Matt" Arlović.
 * All rights reserved.
 * WEB: https://gas-locator.com
 */

#include <stdio.h>
#include "platform.h"
#include "xparameters.h"
#include "xgpio.h"

#define LED_1 0x01
#define LED_2 0x02
#define LED_3 0x04
#define LED_4 0x08
#define LED_5 0x10
#define LED_6 0x20
#define LED_7 0x40
#define LED_8 0x80

#define PUSH_1 0x1
#define PUSH_2 0x2
#define PUSH_3 0x4
#define PUSH_4 0x8

void print(char *str);

int main()
{
    init_platform();
    XGpio switchesGpio, ledsGpio, pushGpio;
    XGpio_Initialize(&switchesGpio, XPAR_DIP_SWITCHES_8BITS_DEVICE_ID);
    XGpio_Initialize(&pushGpio, XPAR_PUSH_DEVICE_ID);
    XGpio_Initialize(&ledsGpio, XPAR_LEDS_DEVICE_ID);

    XGpio_SetDataDirection(&switchesGpio, 1, 0xff);
    XGpio_SetDataDirection(&pushGpio, 1, 0xff);
    XGpio_SetDataDirection(&ledsGpio, 1, 0x0);

    int i = 0;
    int runingLeds = 0;
    int runingLedsMin = 255;
    int runingLeds2 = 1;

    while(1)
    {
        u32 pushData = XGpio_DiscreteRead(&pushGpio, 1);
        if(pushData)
        {
            if(pushData & PUSH_1)
            {
                XGpio_DiscreteSet(&ledsGpio, 1, (LED_1 | LED_3 | LED_5 | LED_7));
                for(i=0; i < 1000000; i++);
                XGpio_DiscreteClear(&ledsGpio, 1, (LED_1 | LED_3 | LED_5 | LED_7));
            }
            else if(pushData & PUSH_2)
            {
                XGpio_DiscreteWrite(&ledsGpio, 1, runingLeds);
                runingLeds += 1;
                if(runingLeds >= 255)
                    runingLeds = 0;
                for(i=0; i < 100000; i++);
            }
            else if(pushData & PUSH_3)
            {
                XGpio_DiscreteWrite(&ledsGpio, 1, runingLedsMin);
                runingLedsMin /= 2;
                if(runingLedsMin <= 0)
                    runingLedsMin = 255;
                for(i=0; i < 1000000; i++);
            }
            else if(pushData & PUSH_4)
            {
                XGpio_DiscreteWrite(&ledsGpio, 1, runingLeds2);
                runingLeds2 *= 2;
                if(runingLeds2 >= 255)
                    runingLeds2 = 1;
                for(i=0; i < 1000000; i++);
            }
        }
        else
        {
            u32 switchData = XGpio_DiscreteRead(&switchesGpio, 1);
            XGpio_DiscreteWrite(&ledsGpio, 1, switchData);
        }
    }
    return 0;
}