Wetter-anzeigen/WeatherMatrix/WeatherMatrix.ino

#include <FastLED.h>

#define LED_PIN  0

#define COLOR_ORDER GRB
#define CHIPSET     WS2811

#define BRIGHTNESS 10
 
// networking and json
String apiUrl;
int status = WL_IDLE_STATUS;

int connectWiFi() {
  WiFi.begin("Wokwi-GUEST", "", 6);
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
  }
  return WiFi.status();
}

String buildAPIUrl (double lat, double lon, const String& apiKey) {
  const String latStr(lat, 4);
  const String lonStr(lon, 4);
  return String("https://api.openweathermap.org/data/2.5/weather?lat=" +
                latStr + "&lon=" + lonStr + "&appid=" + apiKey);
}

// Params for width and height
const uint8_t kMatrixWidth = 16;
const uint8_t kMatrixHeight = 16;

uint16_t XY( uint8_t x, uint8_t y)
{
  uint16_t i;
  if ( x & 0x01) {
    i = kMatrixHeight * (kMatrixWidth - (x + 1)) + y;
  } else {
    i = kMatrixHeight * (kMatrixWidth - x) - (y + 1);
  }
  return i;
}

#define NUM_LEDS (kMatrixWidth * kMatrixHeight)
CRGB leds_plus_safety_pixel[ NUM_LEDS + 1];
CRGB* const leds( leds_plus_safety_pixel + 1);

uint16_t XYsafe( uint8_t x, uint8_t y)
{
  if ( x >= kMatrixWidth) return -1;
  if ( y >= kMatrixHeight) return -1;
  return XY(x, y);
}

uint8_t sun_yx[16][16] = {
  {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
  {0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0},
  {0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0},
  {0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0},
  {1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1},
  {0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 1, 0},
  {0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0},
  {0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 0},
  {0, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0},
  {0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0},
  {0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 1, 0},
  {1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1},
  {0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0},
  {0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0},
  {0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0},
  {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
};

uint8_t cloud_yx[16][16] = {
  {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
  {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
  {0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0},
  {0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0},
  {0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0},
  {0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0},
  {0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0},
  {0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0},
  {0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0},
  {0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0},
  {0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0},
  {0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0},
  {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
  {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
  {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
  {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
};

void DrawFrame(uint8_t arr[][16])
{
  for (int i = 0; i < 16; i++) {
    for (int j = 0; j < 16; j++) {
      uint8_t elem = arr[i][j];
      if (elem == 1) {
        leds[ XYsafe(i, j)]  = CRGB::Yellow;
      }
    }
  }
}

void loop()
{
  DrawFrame(sun_yx);
  FastLED.show();
  delay(3000);
  FastLED.clear();
  DrawFrame(cloud_yx);
  FastLED.show();
  delay(3000);
  FastLED.clear();
}




void setup() {
  Serial.begin(9600);

  // weather api
  const float lat = 48.9517;
  const float lon = 10.1703;
  const String apiKey = "e471293b25fdb6697c0a862f2695df5f";
  apiUrl = buildAPIUrl(lat, lon, apiKey);
  connectWiFi();
  
  if (WiFi.status() != WL_CONNECTED) {
    Serial.println(WiFi.status());
  }
  HTTPClient http;
  http.begin(apiUrl);
  int respCode = http.GET();

  JsonDocument payload;

  if(respCode > 0){
    const String response = http.getString();
    deserializeJson(payload, response);
    Serial.println(payload.size());
  } else {
    Serial.print("error ");
    Serial.println(respCode);
  }

  
  FastLED.addLeds<CHIPSET, LED_PIN, COLOR_ORDER>(leds, NUM_LEDS).setCorrection(TypicalSMD5050);
  FastLED.setBrightness( BRIGHTNESS );
}