Add before() for initialisations before radio hogs SPI

Fix #293

libraries/MySensors/core/MySensorCore.cpp

@@ -64,6 +64,9 @@ void _begin() {
 	    hwInit();
 	#endif
 
+	// Call before() in sketch (if it exists)
+	if (before) before();
+
 	debug(PSTR("Starting " MY_NODE_TYPE " (" MY_CAPABILIIES ", " LIBRARY_VERSION ")\n"));
 
 	signerInit();

libraries/MySensors/core/MySensorCore.h

@@ -236,6 +236,7 @@ extern MyMessage _msgTmp;  // Buffer for temporary messages (acks and nonces amo
 void receive(const MyMessage &message)  __attribute__((weak));
 void receiveTime(unsigned long)  __attribute__((weak));
 void presentation()  __attribute__((weak));
+void before() __attribute__((weak));
 void setup() __attribute__((weak));
 void loop() __attribute__((weak));
 

libraries/MySensors/examples/RelayActuator/RelayActuator.ino

@@ -46,8 +46,7 @@
 #define RELAY_OFF 0 // GPIO value to write to turn off attached relay
 
 
-void setup()  
-{ 
+void before() { 
   for (int sensor=1, pin=RELAY_1; sensor<=NUMBER_OF_RELAYS;sensor++, pin++) {
     // Then set relay pins in output mode
     pinMode(pin, OUTPUT);   
@@ -56,6 +55,10 @@ void setup()
   }
 }
 
+void setup() {
+  
+}
+
 void presentation()  
 {   
   // Send the sketch version information to the gateway and Controller

libraries/MySensors/keywords.txt

@@ -21,6 +21,7 @@ wait	KEYWORD2
 receive	KEYWORD2
 receiveTime	KEYWORD2
 loop	KEYWORD2
+before	KEYWORD2
 setup	KEYWORD2
 presentation	KEYWORD2
 sleep	KEYWORD2