first version

library.json

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+{
+    "name": "SerialReader",
+    "version": "1.0.0",
+    "description": "Helper class for reading Serial input, without blocking",
+    "repository":
+    {
+      "type": "git",
+      "url": "https://git.hodos.ro/arduino/lib_serial-reader.git"
+    },
+    "authors":
+    [
+      {
+        "name": "Nicu Hodos",
+        "email": "nicu@hodos.ro",
+        "maintainer": true
+      }
+    ],
+    "license": "MIT",
+    "frameworks": "arduino",
+    "platforms": "*"
+  }

src/SerialReader.h

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+#pragma once
+
+#include <Arduino.h>
+
+class SerialReader {
+    static const int bufferLength = 50;
+	char buffer[bufferLength];
+
+public:
+    char* getBuffer() {
+        return buffer;
+    }
+
+	int readLine(SerialUART &serial) {
+		static int pos = 0;
+		int rpos;
+		int readCh;
+
+		for (int i = 0, avail = serial.available(); i < avail && (readCh = serial.read()) > 0; i++) {
+			switch (readCh) {
+			case '\r': // Ignore CR
+				break;
+			case '\n': // Return on new-line
+				rpos = pos;
+				pos = 0;  // Reset position index ready for next time
+				return rpos;
+			default:
+				if (pos < bufferLength - 1) {
+					buffer[pos++] = readCh;
+					buffer[pos] = 0;
+				}
+			}
+		}
+		return 0;
+	}
+
+};