Added backend

backend/app.py

@@ -0,0 +1,38 @@
+from flask import Flask
+from threading import Thread
+import os
+
+
+app = Flask(__name__)
+
+threadFlag = True
+def playFunction(freq):
+    global threadFlag
+    while not threadFlag:
+        os.system("beep -f %f" % (freq))
+        #print("beep -f %f" % (freq))
+
+tc = 0
+@app.before_first_request
+def activate_job():
+    global tc
+    tc = 0
+
+@app.route('/startfreq/<freq>')
+def freq(freq):
+    print(freq)
+    thread2 = Thread(target=playFunction, args=freq)
+    return("200")
+
+@app.route('/stopfreq/<freq2>')
+def freq2(freq2):
+    global threadFlag
+    threadFlag = True
+    return("200")
+
+if __name__ == "__main__":
+    app.run(debug=True, host='0.0.0.0')
+
+
+
+