ipaddress_demo.cpp

#include <unistd.h>
#include <iostream>
#include <sys/types.h>
#include <ifaddrs.h>
#include <netinet/in.h>
#include <string.h>
#include <cstring>
#include <arpa/inet.h>

#include "../cpp/driver/everloop_image.h"
#include "../cpp/driver/everloop.h"
#include "../cpp/driver/wishbone_bus.h"

namespace hal = matrix_hal;

struct sockaddr_in sa;
char str[INET_ADDRSTRLEN];
int last_integer = 0;

void setNumber(int position, int value, hal::EverloopImage *image) {

  image->leds[position].blue = 0;
  image->leds[position].green = 20;
  image->leds[position].red = 40;

  for (int i = 0; i < value; i++) {
    image->leds[i + position + 1].blue = 0;
    image->leds[i + position + 1].blue = 30;
  }
}

int main() {

  hal::WishboneBus bus;
  bus.SpiInit();
  hal::Everloop everloop;
  hal::EverloopImage image;

  everloop.Setup(&bus);

  struct ifaddrs *ifAddrStruct = NULL;
  struct ifaddrs *ifa = NULL;
  void *tmpAddrPtr = NULL;

  getifaddrs(&ifAddrStruct);

  for (ifa = ifAddrStruct; ifa != NULL; ifa = ifa->ifa_next) {
    if (!ifa->ifa_addr) {
      continue;
    }
    if (ifa->ifa_addr->sa_family == AF_INET) { // check it is IP4
      // is a valid IP4 Address
      tmpAddrPtr = &((struct sockaddr_in *)ifa->ifa_addr)->sin_addr;
      char addressBuffer[INET_ADDRSTRLEN];
      inet_ntop(AF_INET, tmpAddrPtr, addressBuffer, INET_ADDRSTRLEN);
      printf("%s IP Address %s\n", ifa->ifa_name, addressBuffer);
      if (std::strcmp(ifa->ifa_name, "wlan0") == 0) {
        in_addr_t address = inet_addr(addressBuffer);
        last_integer = (address >> 24) & 0xFF;
        printf("show last integer: %i\n", last_integer);
      }
    }
  }
  if (ifAddrStruct != NULL)
    freeifaddrs(ifAddrStruct);

  for (hal::LedValue &led : image.leds) {
    led.red = 0;
    led.green = 0;
    led.blue = 0;
    led.white = 0;
  }
  everloop.Write(&image);

  int first_digit = (int)last_integer / 100;
  int second_digit = (int)(last_integer % 100) / 10;
  int third_digit = (int)(last_integer % 100) % 10;

  setNumber(0, first_digit, &image);
  everloop.Write(&image);

  setNumber(first_digit + 1, second_digit, &image);
  everloop.Write(&image);

  setNumber(first_digit + second_digit + 2, third_digit, &image);
  everloop.Write(&image);

  return 0;
}