optimized

libraries/AltSoftSerial/examples/Echo/Echo.ino

@@ -0,0 +1,40 @@
+#include <AltSoftSerial.h>
+
+// AltSoftSerial always uses these pins:
+//
+// Board          Transmit  Receive   PWM Unusable
+// -----          --------  -------   ------------
+// Teensy 3.0 & 3.1  21        20         22
+// Teensy 2.0         9        10       (none)
+// Teensy++ 2.0      25         4       26, 27
+// Arduino Uno        9         8         10
+// Arduino Leonardo   5        13       (none)
+// Arduino Mega      46        48       44, 45
+// Wiring-S           5         6          4
+// Sanguino          13        14         12
+
+// This example code is in the public domain.
+
+AltSoftSerial altSerial;
+
+void setup() {
+  Serial.begin(9600);
+  while (!Serial) ; // wait for Arduino Serial Monitor to open
+  Serial.println("AltSoftSerial Test Begin");
+  altSerial.begin(9600);
+  altSerial.println("Hello World");
+}
+
+void loop() {
+  char c;
+
+  if (Serial.available()) {
+    c = Serial.read();
+    altSerial.print(c);
+  }
+  if (altSerial.available()) {
+    c = altSerial.read();
+    Serial.print(c);
+  }
+}
+