example starter app

Author: jsloyer

.cfignore

@@ -0,0 +1,54 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+env/
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+*.egg-info/
+.installed.cfg
+*.egg
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.coverage
+.cache
+nosetests.xml
+coverage.xml
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/

Procfile

@@ -1 +1 @@
-web: python hello.py
+web: python server.py

README.md

@@ -1,8 +1,14 @@
-Hello World in Python on Cloud Foundry using Flask
+Python app to demonstrate using inputs and outputs on a Raspberry Pi
 ================================================================================
 
-This is a sample application showing how to deploy a simple hello world app
-using Cloud Foundry and the Python build pack.
+This is a sample application shows how to use simple inputs and outputs on a
+Raspberry Pi.  There is a server side component that runs in Bluemix (Cloud Foundry) and
+a Python client that runs on a Raspberry Pi.
+
+The input is a simple button.  The output is a simple LED.  If you click on/off
+in the web UI in Bluemix it will turn a LED on/off.  If you press the button
+it will send a text message using Twilio to the phone number and message you
+type in the web ui.
 
 
 
@@ -13,7 +19,7 @@ To Use
 cf push myappname
 ```
 
-Replace myapp name with the name of your app (ex. hello-world)
+Replace myapp name with the name of your app (ex. python-raspberry-pi)
 
 or click the button below
 

__init__.py

@@ -0,0 +1,41 @@
+import RPi.GPIO as GPIO
+import time
+import os, json
+import ibmiotf.application
+import uuid
+
+GPIO.setmode(GPIO.BCM)
+GPIO.setup(18, GPIO.IN, pull_up_down=GPIO.PUD_UP)
+GPIO.setup(17, GPIO.OUT)
+
+client = None
+
+def myCommandCallback(cmd):
+    if cmd.event == "light":
+        command = cmd.payload["d"]["command"]
+        print command
+        if command == "on":
+            GPIO.output(17, True)
+        elif command == "off":
+            GPIO.output(17, False)
+
+try:
+    options = ibmiotf.application.ParseConfigFile("/home/pi/device.cfg")
+    options["deviceId"] = options["id"]
+    options["id"] = "aaa" + options["id"]
+    print options
+    client = ibmiotf.application.Client(options)
+    client.connect()
+    client.deviceEventCallback = myCommandCallback
+    client.subscribeToDeviceEvents(event="light")
+
+    while True:
+        GPIO.wait_for_edge(18, GPIO.FALLING)
+        print "Button Pushed"
+        myData = {'buttonPushed' : True}
+        client.publishEvent("raspberrypi", options["deviceId"], "input", myData)
+        time.sleep(0.2)
+
+except ibmiotf.ConnectionException  as e:
+    print e
+

client.py

@@ -1,4 +1,7 @@
 ---
 applications:
-- name: hello-world-flask
+- name: python-iot-hackathon
   memory: 128M
+  services:
+   - iot-python
+   - twilio

hello.py

@@ -1 +1,3 @@
 Flask
+ibmiotf
+twilio

manifest.yml

@@ -0,0 +1,75 @@
+from flask import Flask,redirect
+from flask import render_template
+from flask import request
+import os, json
+import time
+import ibmiotf.application
+from twilio.rest import TwilioRestClient
+
+vcap = json.loads(os.getenv("VCAP_SERVICES"))
+twilioAccount = vcap["user-provided"][0]["credentials"]["accountSID"]
+twilioToken = vcap["user-provided"][0]["credentials"]["authToken"]
+twilioClient = TwilioRestClient(twilioAccount, twilioToken)
+
+client = None
+
+phoneNumberTo = ""
+textMessage = "Button Pushed"
+phoneNumberFrom = os.getenv("PHONE_NUMBER_FROM")
+deviceId = os.getenv("DEVICE_ID")
+
+def myCommandCallback(cmd):
+    global phoneNumberTo
+    global textMessage
+
+    buttonPushed = cmd.payload["d"]["buttonPushed"]
+    message = twilioClient.messages.create(to=phoneNumberTo, from_=phoneNumberFrom, body=textMessage)
+    print buttonPushed
+try:
+    options = {
+        "org": vcap["iotf-service"][0]["credentials"]["org"],
+        "id": vcap["iotf-service"][0]["credentials"]["iotCredentialsIdentifier"],
+        "auth-method": "apikey",
+        "auth-key": vcap["iotf-service"][0]["credentials"]["apiKey"],
+        "auth-token": vcap["iotf-service"][0]["credentials"]["apiToken"]
+    }
+    client = ibmiotf.application.Client(options)
+    client.connect()
+
+    client.deviceEventCallback = myCommandCallback
+    client.subscribeToDeviceEvents(event="input")
+
+except ibmiotf.ConnectionException as e:
+    print e
+
+app = Flask(__name__)
+
+if os.getenv("VCAP_APP_PORT"):
+    port = int(os.getenv("VCAP_APP_PORT"))
+else:
+    port = 8080
+
+@app.route('/')
+def hello():
+    return render_template('index.html')
+
+@app.route('/light/<command>', methods=['GET', 'POST'])
+def light_route(command):
+    print command
+    myData = {'command' : command}
+    client.publishEvent("raspberrypi", deviceId, "light", myData)
+    return redirect("/", code=302)
+
+@app.route('/phoneNumber', methods=['POST'])
+def phone_number_route():
+    global phoneNumberTo
+    global textMessage
+
+    phoneNumber =  request.form['phoneNumber']
+    textMessage =  request.form['message']
+    phoneNumberTo = "+1" + phoneNumber
+
+    return redirect("/", code=302)
+
+if __name__ == '__main__':
+    app.run(host='0.0.0.0', port=port)

requirements.txt

@@ -0,0 +1,22 @@
+<!doctype html>
+<html>
+    <head>
+        <title>Hello from Flask</title>
+    </head>
+    <body>
+        <h1>Simple Python App to Turn a Light on an off</h1>
+        <br />
+        <form action="/phoneNumber" method="POST">
+            <input name="phoneNumber" type="text" placeholder="5555551212"/>
+            <input name="message" type="text" placeholder="Button Pushed"/>
+            <input type="submit" value="Save my phone number and text message" />
+        </form>
+        <br />
+        <form action="/light/on" method="POST">
+            <input type="submit" value="Turn Light On">
+        </form>
+        <form action="/light/off" method="POST">
+            <input type="submit" value="Turn Light Off">
+        </form>
+    </body>
+</html>