Added ESP8266 water leak sensor

Added ESP8266 water leak sensor

Esp8266EasyIoT/examples/esp8266_leak/esp8266_leak.ino

@@ -0,0 +1,53 @@
+ /*
+ V1.0 - first version
+ 
+ Created by Igor Jarc <[email protected]>
+ See http://iot-playground.com for details
+ 
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License
+ version 2 as published by the Free Software Foundation.
+ */
+#include <Esp8266EasyIoT.h>
+#include <SoftwareSerial.h> 
+
+Esp8266EasyIoT esp; 
+
+SoftwareSerial serialEsp(10, 11);
+
+#define LEAK_PIN  2  // Arduino Digital I/O pin number
+#define CHILD_ID_LEAK 0
+
+Esp8266EasyIoTMsg msgLeak(CHILD_ID_LEAK, V_DIGITAL_VALUE);
+//Esp8266EasyIoTMsg msgHum(CHILD_ID_LEAK, V_LEAK); // supported in esp >= V1.1 lib
+
+int lastLeakValue = -1;
+
+void setup()
+{
+  serialEsp.begin(9600);
+  Serial.begin(115200);  
+
+  Serial.println("EasyIoTEsp init");
+  esp.begin(NULL, 3, &serialEsp, &Serial);
+
+  pinMode(LEAK_PIN, INPUT);
+
+  esp.present(CHILD_ID_LEAK, S_LEAK);
+}
+
+void loop()
+{
+  esp.process();
+
+  // Read digital pin value
+  int leakValue = digitalRead(LEAK_PIN); 
+  // send if changed
+  if (leakValue != lastLeakValue) {    
+    Serial.println(leakValue);
+    esp.send(msgLeak.set(leakValue==0?0:1));
+    lastLeakValue = leakValue;
+  }  
+}
+
+

external_libraries/MySensors/MyMessage.cpp

@@ -177,10 +177,10 @@ MyMessage& MyMessage::set(void* value, uint8_t length) {
 
 
 MyMessage& MyMessage::set(const char* value) {
-	uint8_t length = strlen(value);
+	uint8_t length = min(strlen(value), MAX_PAYLOAD);
 	miSetLength(length);
 	miSetPayloadType(P_STRING);
-	strncpy(data, value, min(length, MAX_PAYLOAD));
+	strncpy(data, value, length);
 	return *this;
 }