Add softserial_mock sketch to forward serial commands from one arduino to another

ino/softserial_mock/softserial_mock.ino

@@ -0,0 +1,31 @@
+#include <SoftwareSerial.h>
+
+/**
+ * CONSTANTS
+ **/
+
+#define rSignal 7
+#define tSignal 8
+
+const int serialDelay = 5;
+
+SoftwareSerial softSerial (rSignal, tSignal);
+
+volatile char cmdChar = 'z';
+
+void setup() {
+  Serial.begin(57600);
+  Serial.flush();
+  Serial.setTimeout(serialDelay);
+
+  softSerial.begin(9600);
+  softSerial.flush();
+  softSerial.setTimeout(serialDelay);
+}
+
+void loop () {
+  if (Serial.available()) {
+    cmdChar = (char)Serial.read();
+    softSerial.write(cmdChar);
+  }
+}