hisenzhang / dtmf-app

Project demo based on DTMF

DTMF & HT Demo

This repository contains scripts demonstrate the idea presented in the slides.

• demo_pwd.py simulates a HT entering password. Inputs other than "5288" will be rejected.

  You entered: 5288
  Access granted.
  You entered: 588
  Access denied.
  You entered: 4321
  Access denied.
  

• demo_dynamic.py enhances safety by adopting time-variant password.

• demo_automobile.py uses your HT as a car key (with plenty of cool features).

  You entered: 0
  Opeartion code: 0 Action: lock
  Parameter:
  Car is LOCKED now.
  You entered: 1
  Opeartion code: 1 Action: unlock
  Parameter:
  Car is UNLOCKED now.
  You entered: 4
  Opeartion code: 4 Action: panic
  Parameter:
  *** Alarm sets off ***
  You entered: 9
  Undefined operation
  You entered: 2#D0
  Opeartion code: 2 Action: window_control
  Parameter: D0
  Rear Right window(s) now DOWN
  You entered: 2#01
  Opeartion code: 2 Action: window_control
  Parameter: 01
  ALL window(s) now UP
  

• demo_ascii.py interprets input as ASCII characters. Yes, you can "text" on HTs.

  You entered:  41 42 43 44
  Translates to: ABCD
  You entered:  48 65 6c 6c 6f 20 77 6f 72 6c 64 21
  Translates to: Hello world!
  You entered:  44 45 20 4b 44 32 54 41 49
  Translates to: DE KD2TAI
  You entered:  0a 59 38 38 62 20 20 20 20 20 20 20 20 20 2f 20 20 2f 7e 7e 38 38 62 20 2c 64 38 38 7e 7e 5c 20 20 7e 7e 7e 7e 64 38 38 50 20 0a 20 59 38 38 62 20 20 20 20 20 20 20 2f 20 20 7c 20 20 20 38 38 38 20 38 38 38 38 20 20 20 20 20 20 20 20 64 38 38 50 20 20 0a 20 20 59 38 38 62 20 20 65 20 20 2f 20 20 20 60 20 20 64 38 38 50 20 60 59 38 38 62 20 20 20 20 20 20 64 38 38 50 20 20 20 0a 20 20 20 59 38 38 62 64 38 62 2f 20 20 20 20 20 20 64 38 38 50 20 20 20 60 59 38 38 62 2c 20 20 20 64 38 38 50 20 20 20 20 0a 20 20 20 20 59 38 38 59 38 59 20 20 20 20 20 20 64 38 38 50 20 20 20 20 20 20 38 38 38 38 20 20 64 38 38 50 20 20 20 20 20 0a 20 20 20 20 20 59 20 20 59 20 20 20 20 20 20 64 38 38 50 5f 5f 5f 20 5c 5f 5f 38 38 50 27 20 64 38 38 50 5f 5f 5f 5f 20 20 20 20 20
  Translates to:
  Y88b         /  /~~88b ,d88~~\  ~~~~d88P
   Y88b       /  |   888 8888        d88P
    Y88b  e  /   `  d88P `Y88b      d88P
     Y88bd8b/      d88P   `Y88b,   d88P
      Y88Y8Y      d88P      8888  d88P
      Y  Y      d88P___ \__88P' d88P____
  

• demo_image.py transmits image in PPM format. Find your output image in output/ subdirectory.

  You entered:  50 31 20 33 20 32 0a 31 20 30 20 31 20 30 20 31 20 30
  Translates to: P1 3 2
  1 0 1 0 1 0
  You entered:  50 33 20 34 20 34 20 31 35 0a 30 20 30 20 30 20 30 20 30 20 30 20 30 20 30 20 30 20 31 35 20 30 20 31 35 0a 30 20 30 20 30 20 30 20 31 35 20 37 20 30 20 30 20 30 20 30 20 30 20 30 0a 30 20 30 20 30 20 30 20 30 20 30 20 30 20 31 35 20 37 20 30 20 30 20 30 0a 31 35 20 30 20 31 35 20 30 20 30 20 30 20 30 20 30 20 30 20 30 20 30 20 30
  Translates to: P3 4 4 15
  0 0 0 0 0 0 0 0 0 15 0 15
  0 0 0 0 15 7 0 0 0 0 0 0
  0 0 0 0 0 0 0 15 7 0 0 0
  15 0 15 0 0 0 0 0 0 0 0 0
  

Install Dependencies

pip install pyserial

Configure

For demonstration purpose, the default input are files. Depending on your situation, you may want to read data from the serial port or a file.

The serial port input expect characters sent from arduino with MT8870. Here's a sample program for your reference. It can be easily modified for out purpose.

In source code, uncomment the code and modify parameters for connection initialization:

conn = DriverFactory.newConnection("file")
print("Connection: " + conn.init(FILE) + "\n=========\n")
# conn = DriverFactory.newConnection("serial")
# print("Connection: " + conn.init(PORT) + "\n=========\n")

# modify parameters below
FILE = "test/ascii.txt" 
PORT = "COM3"

Run

You need python3 to run demo xxx:

python demo_xxx.py