From b3c5cfa1e099b5d5127e4e48e23cbae716e0b3ca Mon Sep 17 00:00:00 2001
From: tiijay <git@th-jahn.de>
Date: Sat, 8 Nov 2025 13:54:31 +0100
Subject: [PATCH] v.0.2.0 WiFiClient  HTTP request

---
 lib/BlinkLed/src/BlinkLed.cpp |   2 +-
 lib/BlinkLed/src/BlinkLed.h   |   5 +-
 platformio.ini                |   8 +--
 src/main.cpp                  | 116 +++++++++++++++++++++++++++++++++-
 4 files changed, 120 insertions(+), 11 deletions(-)

diff --git a/lib/BlinkLed/src/BlinkLed.cpp b/lib/BlinkLed/src/BlinkLed.cpp
index 504fcb0..1c7ca4e 100644
--- a/lib/BlinkLed/src/BlinkLed.cpp
+++ b/lib/BlinkLed/src/BlinkLed.cpp
@@ -1,6 +1,6 @@
 #include "BlinkLed.h"
 
-BlinkLed::BlinkLed(byte pin)
+BlinkLed::BlinkLed(u_int8_t pin)
 {
     BlinkLed();
     _pin = pin;
diff --git a/lib/BlinkLed/src/BlinkLed.h b/lib/BlinkLed/src/BlinkLed.h
index 698db4b..be567a0 100644
--- a/lib/BlinkLed/src/BlinkLed.h
+++ b/lib/BlinkLed/src/BlinkLed.h
@@ -2,17 +2,16 @@
 #define BLINKLED
 
 #include <Arduino.h>
-
 class BlinkLed
 {
 private:
     PinStatus _ledStatus;
-    byte _pin;
+    u_int8_t _pin;
     /* data */
     BlinkLed() { _ledStatus = LOW; }
 
 public:
-    BlinkLed(byte pin);
+    BlinkLed(u_int8_t pin);
     ~BlinkLed() {}
 
     void on();
diff --git a/platformio.ini b/platformio.ini
index c729259..362a9a1 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -15,8 +15,6 @@ framework = arduino
 monitor_speed = 115200
 build_flags = 
 	-D PICO_CYW43_ARCH_THREADSAFE_BACKGROUND=1
-
-lib_deps = fastled/FastLED@^3.10.3
-
-; Add this to see build flags during compilation
-; build_flags = -v
\ No newline at end of file
+lib_deps = 
+	fastled/FastLED@^3.10.3
+	bblanchon/ArduinoJson@^7.4.2
diff --git a/src/main.cpp b/src/main.cpp
index a9c452a..44a856f 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,7 +1,9 @@
+#include <WiFi.h>
+#include <ArduinoJson.h>
+#include <LedMatrix.h>
 #include <FastLED.h>
 #include <MyClass.h>
 #include <BlinkInternLed.h>
-#include <LedMatrix.h>
 #include <mathematics.h>
 
 const uint8_t MATRIX_ROWS = 64;
@@ -91,6 +93,106 @@ void setupMatrix()
     matrix.show();
 }
 
+void get_json_data()
+{
+    Serial.println("get_json_data()");
+
+    WiFiClient client;
+    const int timeout = 5000; // 5 second timeout
+
+    if (client.connect("api.open-meteo.com", 80))
+    {
+        Serial.println("connected to api.open-meteo.com :-)");
+
+        client.println("GET /v1/forecast?latitude=52.52&longitude=13.41&current_weather=true HTTP/1.1");
+        client.println("Host: api.open-meteo.com");
+        client.println("User-Agent: PicoW");
+        client.println("Connection: close");
+        client.println();
+
+        // Wait for response with timeout
+        unsigned long startTime = millis();
+        while (client.available() == 0)
+        {
+            if (millis() - startTime > timeout)
+            {
+                Serial.println(">>> Client Timeout !");
+                client.stop();
+                return;
+            }
+            delay(10);
+        }
+
+        // JSON Response parsen
+        String response = "";
+        while (client.available())
+        {
+            String line = client.readStringUntil('\n');
+            response += line + "\n";
+
+            // Debug: print each line as it comes
+            Serial.print("> ");
+            Serial.println(line);
+        }
+        Serial.println("=== Full Response Complete ===");
+
+        // JSON parsen (nach dem Header)
+        int jsonStart = response.indexOf('{');
+        if (jsonStart > 0)
+        {
+            Serial.println("jsonStart > 0");
+            String json = response.substring(jsonStart);
+
+            // StaticJsonDocument<512> doc;
+            JsonDocument doc;
+            DeserializationError error = deserializeJson(doc, json);
+
+            if (!error)
+            {
+                JsonObject current = doc["current_weather"];
+                JsonObject units = doc["current_weather_units"];
+
+                float temperature = current["temperature"];
+                String temp_unit = units["temperature"];
+
+                Serial.printf("Temperature: %.1f %s", temperature, temp_unit.c_str());
+                Serial.println();
+            }
+            else
+            {
+                Serial.println(error.c_str());
+            }
+        }
+        else
+        {
+            Serial.println("NOT jsonStart > 0");
+        }
+
+        client.stop();
+    }
+    else
+    {
+        Serial.println("NO connection to api.open-meteo.com");
+    }
+}
+
+void connect_wifi()
+{
+    // For Wokwi simulation - use simulated WiFi
+    Serial.println("Connecting to WiFi...");
+
+    // In Wokwi, WiFi connects automatically in simulation
+    WiFi.begin("Wokwi-GUEST", ""); // Wokwi's simulated WiFi
+    while (WiFi.status() != WL_CONNECTED)
+    {
+        delay(250);
+        Serial.print(".");
+    }
+    Serial.println("\nConnected to WiFi!");
+    Serial.print("IP address: ");
+    Serial.println(WiFi.localIP());
+}
+
 void setup()
 {
     // Initialize Serial for debug output
@@ -102,8 +204,18 @@ void setup()
         delay(10);
     }
 
+    connect_wifi();
+    if (WiFi.status() == WL_CONNECTED)
+    {
+        get_json_data();
+    }
+    else
+    {
+        Serial.println("WiFi NOT connected.");
+    }
+
     setupMatrix();
-    printCharMatrixSimple('@');
+    // printCharMatrixSimple('@');
     // number_to_bitarray_msb(0x11FF, 16, true);
 
     // playWithBlinkLed();