Add instructions to example and test files.

Author: ed7coyne

examples/FirebaseSerialHost_ESP8266/FirebaseSerialHost_ESP8266.ino

@@ -16,15 +16,26 @@
 
 // FirebasePush_ESP8266 is a sample that will start our serial transciever
 // listening on a software port and allow debug info over main serial port.
+//
+// A suggested setup for testing this example would be a USB to TTL cable
+// with the green wire connected to pin 5 and the white wire connected to
+// pin 4.
+// First edit begin.txt and put in your host and secret.
+// Then run the following commands to setup the serial port in linux:
+// stty -F /dev/ttyUSB0 9600 raw -echo -echoe -echok
+// Then on one console do:
+// cat /dev/ttyUSB0 &
+// This console will now read all responses from the modem. Then do:
+// cat begin.txt > /dev/ttyUSB0
+// You should see +OK and you can now feed in theother example commmands.
 
 #include <SoftwareSerial.h>
 #include <ESP8266WiFi.h>
 
 #include <Firebase.h>
 #include <SerialTransceiver.h>
 
-
-SoftwareSerial data_serial(13 /*RX*/, 14/*TX*/);
+SoftwareSerial data_serial(5 /*RX*/, 4/*TX*/);
 firebase::modem::SerialTransceiver transceiver;
 
 void setup() {
@@ -42,6 +53,10 @@ void setup() {
   Serial.println(WiFi.localIP());
 
   data_serial.begin(9600);
+  while (!data_serial) {
+    Serial.println("Error initilizing serial.");
+    delay(5000);
+  }
 
   transceiver.begin(&data_serial);
 }

examples/FirebaseSerialHost_ESP8266/begin.txt

@@ -0,0 +1,2 @@
+BEGIN $YOUR_HOST $YOUR_SECRET
+

examples/FirebaseSerialHost_ESP8266/get.txt

@@ -0,0 +1,2 @@
+GET /serial/test
+

examples/FirebaseSerialHost_ESP8266/get_push.txt

@@ -0,0 +1 @@
+GET /serial/push_test

examples/FirebaseSerialHost_ESP8266/push.txt

@@ -0,0 +1 @@
+PUSH /seria/push_test "this is a test string \ "

examples/FirebaseSerialHost_ESP8266/remove.txt

@@ -0,0 +1 @@
+REMOVE /serial/test

examples/FirebaseSerialHost_ESP8266/set.txt

@@ -0,0 +1,2 @@
+SET /serial/test this is a test string \ "
+