Merge pull request #35 from aperepel/master

Fixes watchdog timer resets (must feed at least once within 8 seconds)

examples/NetworkAnalysis/Transmitter/Transmitter_esp8266

@@ -0,0 +1,76 @@
+// a 10K pull-down resistor is required
+// place it between the GND and the communications pin
+// if you are getting a report of every message in Busy bucket, add a resistor
+
+#if defined(ESP8266)
+  #include <ESP.h>
+#endif
+
+#include <PJON.h>
+
+float test;
+float mistakes;
+int busy;
+int fail;
+
+// network(Arduino pin used, selected device id)
+PJON network(D1, 45);
+
+int packet;
+char content[] = "01234567890123456789";
+
+void setup() {
+  Serial.begin(115200);
+
+  Serial.println("PJON - Network analysis");
+  Serial.println("Starting a 10 seconds communication test..");
+  Serial.println();
+}
+
+void loop() {
+  long time = millis();
+  while(millis() - time < 10000) {
+    #if defined(ESP8266)
+      ESP.wdtFeed();
+    #endif
+
+    /*
+    Here send_string low level function is used to
+    be able to catch every single sending result.
+    */
+
+    int response = network.send_string(44, content, 20);
+    if(response == ACK)
+      test++;
+    if(response == NAK)
+      mistakes++;
+    if(response == BUSY)
+      busy++;
+    if(response == FAIL)
+      fail++;
+  }
+
+  Serial.print("Absolute com speed: ");
+  Serial.print( (test * 24 ) / 10 );
+  Serial.println("B/s");
+  Serial.print("Practical bandwidth: ");
+  Serial.print( (test * 20 ) / 10 );
+  Serial.println("B/s");
+  Serial.print("Packets sent: ");
+  Serial.println(test);
+  Serial.print("Mistakes (error found with CRC) ");
+  Serial.println(mistakes);
+  Serial.print("Fail (no answer from receiver) ");
+  Serial.println(fail);
+  Serial.print("Busy (Channel is busy or affected by interference) ");
+  Serial.println(busy);
+  Serial.print("Accuracy: ");
+  Serial.print(100 - (100 / (test / mistakes)));
+  Serial.println(" %");
+  Serial.println(" --------------------- ");
+
+  test = 0;
+  mistakes = 0;
+  busy = 0;
+  fail = 0;
+};