1414// limitations under the License.
1515//
1616
17- // FirebaseStream_ESP8266 is a sample that stream on a firebase child
18- // node.
17+ // FirebaseStream_ESP8266 is a sample that stream bitcoin price from a
18+ // public Firebase and display it on a i2c OLED screen.
19+
20+ //
21+ // Copyright 2015 Google Inc.
22+ //
23+ // Licensed under the Apache License, Version 2.0 (the "License");
24+ // you may not use this file except in compliance with the License.
25+ // You may obtain a copy of the License at
26+ //
27+ // http://www.apache.org/licenses/LICENSE-2.0
28+ //
29+ // Unless required by applicable law or agreed to in writing, software
30+ // distributed under the License is distributed on an "AS IS" BASIS,
31+ // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
32+ // See the License for the specific language governing permissions and
33+ // limitations under the License.
34+ //
35+
36+ // FirebaseStream_ESP8266 is a sample that stream bitcoin price from a
37+ // public Firebase and optionally display them on a OLED i2c screen.
1938
2039#include < Firebase.h>
40+ #include < Adafruit_GFX.h>
41+ #include < Adafruit_SSD1306.h>
2142
22- Firebase fbase = Firebase(" example.firebaseio.com"
43+ #define OLED_RESET 10
44+ Adafruit_SSD1306display (OLED_RESET);
45+
46+ Firebase fbase = Firebase(" publicdata-cryptocurrency.firebaseio.com"
2347
2448void setup () {
2549 Serial.begin (9600 );
2650
51+ display.begin (SSD1306_SWITCHCAPVCC,0x3C );// initialize with the I2C addr 0x3C (for the 128x32)
52+ display.display ();
53+
2754// connect to wifi.
2855 WiFi.begin (" SSID" " PASSWORD"
2956 Serial.print (" connecting"
@@ -35,7 +62,7 @@ void setup() {
3562 Serial.print (" connected:"
3663 Serial.println (WiFi.localIP ());
3764
38- fbase.stream (" /chat "
65+ fbase.stream (" /bitcoin "
3966}
4067
4168
@@ -49,9 +76,17 @@ void loop() {
4976auto type = fbase.read (event);
5077 Serial.print (" event:"
5178 Serial.println (type);
52- if (type != Firebase::Event::UNKNOWN) {
79+ if (type != Firebase::Event::UNKNOWN) {
5380 Serial.print (" data:"
5481 Serial.println (event);
82+
83+ // TODO(proppy): parse JSON object.
84+ display.clearDisplay ();
85+ display.setTextSize (1 );
86+ display.setTextColor (WHITE);
87+ display.setCursor (0 ,0 );
88+ display.println (event);
89+ display.display ();
5590 }
5691 }
5792}