fixed infinite loops which does not works on some chips like esp8266

examples/reciever/reciever.ino

@@ -23,17 +23,15 @@ void setup() {
 void loop() {
 
     //blocks until message will not be read
-    if (bl999_have_message()) {
-        //read message to info and if check sum correct - output it to serial port
-        if (bl999_get_message(info)) {
-            Serial.println("====== Got message: ");
-            Serial.println(info.channel);
-            Serial.println(info.powerUUID);
-            Serial.println(info.battery);
-            Serial.println(info.temperature);
-            Serial.println(info.humidity);
-        }
+    bl999_wait_rx();
+
+    //read message to info and if check sum correct - output it to serial port
+    if (bl999_get_message(info)) {
+        Serial.println("====== Got message: ");
+        Serial.println(info.channel);
+        Serial.println(info.powerUUID);
+        Serial.println(info.battery);
+        Serial.println(info.temperature);
+        Serial.println(info.humidity);
     }
-
-    delay(1000);
 }

lib_bl999.cpp

@@ -46,15 +46,17 @@ extern void bl999_rx_stop() {
 }
 
 extern void bl999_wait_rx() {
-    while (bl999_active && !bl999_message_ready)
-        ;
+    while (bl999_active && !bl999_message_ready) {
+        delay(BL999_DELAY_ON_WAIT);
+    }
 }
 
 extern boolean bl999_wait_rx_max(unsigned long milliseconds) {
     unsigned long start = millis();
 
-    while (bl999_active && !bl999_message_ready && ((millis() - start) < milliseconds))
-        ;
+    while (bl999_active && !bl999_message_ready && ((millis() - start) < milliseconds)) {
+        delay(BL999_DELAY_ON_WAIT);
+    }
 
     return bl999_message_ready;
 }

lib_bl999.h

@@ -49,6 +49,13 @@
 //totally we have 36/4 = 9 nibbles
 #define BL999_DATA_ARRAY_SIZE BL999_DATA_BITS_AMOUNT / BL999_BITS_PER_PACKET
 
+// == Utility defines ==
+
+//On some microcontrollers infinite loop cause watch dog reset,
+//so introducing some small delay in loop
+#define BL999_DELAY_ON_WAIT 10
+
+
 //In this struct result will be stored
 typedef struct {
     byte channel : 2; // up to 3 channels