Added button to give fast command access

LoRaReceiver/LoRaReceiver.ino

@@ -8,6 +8,9 @@
 #define SENDER_ID 0xAA
 #define SELF_ID 0xAB
 
+#define BUTTON_PULLUP_PIN 22
+#define BUTTON_SIGNAL_PIN 19
+
 #define LORA_SCK 5
 #define LORA_MISO 19
 #define LORA_MOSI 27
@@ -96,6 +99,9 @@ void handleCommandG() {
 void setup() {
   Serial.begin(115200);
 
+  pinMode(BUTTON_PULLUP_PIN, INPUT_PULLUP);
+  pinMode(BUTTON_SIGNAL_PIN, INPUT_PULLDOWN);
+
   // OLED init
   Wire.begin();  // SDA/SCL Default
   if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
@@ -117,6 +123,16 @@ void setup() {
 }
 
 void loop() {
+  if (digitalRead(BUTTON_SIGNAL_PIN) == HIGH) {
+    Serial.println("Button gedrueckt -> sende 'g'");
+    showOnOLED("Knopf gedrueckt", "GPS angefragt");
+
+    handleCommandG();
+
+    while (digitalRead(BUTTON_SIGNAL_PIN) == HIGH) delay(10);
+    delay(50);
+  }
+
   if (Serial.available()) {
     char cmd = Serial.read();
     switch (cmd) {