Simple test that only looks at the pins, no extra guff - just to prov…

…e pin usage

pin5test/pin5test.ino

@@ -0,0 +1,43 @@
+#define RX_PIN 19
+#define TX_PIN 23
+#define DIGITAL_PIN 18
+
+void setup() {
+  Serial.begin(115200);
+  // put your setup code here, to run once:
+  Serial2.begin(115200, SERIAL_8N1,RX_PIN,TX_PIN);
+  pinMode(DIGITAL_PIN, INPUT);
+  Serial.println("Setup Complete");
+}
+
+String tmp;
+bool digitalState;
+void loop() {
+  digitalState = digitalRead(DIGITAL_PIN);
+  if (Serial2.available() > 0) {
+    size_t len = Serial2.available();
+//    Serial.printf("%u %s\n", len, (String) digitalState);
+    uint8_t buf[len];
+    Serial2.read(buf, len);
+//    handleBytes(buf, len);    
+    buildString(buf, len);    
+  }
+
+   if(digitalState == LOW) {
+    if(tmp != "") {
+      Serial.print("tmp = ");
+      Serial.println(tmp);
+      tmp = "";
+    }
+  }
+
+}
+
+void buildString(uint8_t buf[], size_t len) {
+  for (int i = 0; i < len; i++) {
+    if (buf[i] < 0x10) {
+        tmp += '0';
+     }
+    tmp += String(buf[i], HEX);
+  }
+}