tool/mbed/mbed-sdk/workspace_tools/host_tests/midi.py

   1 from __future__ import print_function
   2 import sys
   3 import re
   4 import time
   5 import mido
   6 from mido import Message
   7
   8
   9 def test_midi_in(port):
  10         expected_messages_count=0
  11         while expected_messages_count < 7:
  12                 for message in port.iter_pending():
  13                         if message.type in ('note_on', 'note_off', 'program_change', 'sysex'):
  14                                 yield message
  15                                 expected_messages_count+=1
  16                 time.sleep(0.1)
  17
  18 def test_midi_loopback(input_port):
  19         expected_messages_count=0
  20         while expected_messages_count < 1:
  21                 for message in input_port.iter_pending():
  22                         print('Test MIDI OUT loopback received {}'.format(message.hex()))
  23                         expected_messages_count+=1
  24
  25 def test_midi_out_loopback(output_port,input_port):
  26         print("Test MIDI OUT loopback")
  27         output_port.send(Message('program_change', program=1))
  28         test_midi_loopback(input_port)
  29
  30         output_port.send(Message('note_on', note=21))
  31         test_midi_loopback(input_port)
  32
  33         output_port.send(Message('note_off', note=21))
  34         test_midi_loopback(input_port)
  35
  36         output_port.send(Message('sysex', data=[0x7E,0x7F,0x09,0x01]))
  37         test_midi_loopback(input_port)
  38
  39         output_port.send(Message('sysex', data=[0x7F,0x7F,0x04,0x01,0x7F,0x7F]))
  40         test_midi_loopback(input_port)
  41
  42         output_port.send(Message('sysex', data=[0x41,0x10,0x42,0x12,0x40,0x00,0x7F,0x00,0x41]))
  43         test_midi_loopback(input_port)
  44
  45         output_port.send(Message('sysex', data=[0x41,0x10,0x42,0x12,0x40,0x00,0x04,0x7F,0x3D]))
  46         test_midi_loopback(input_port)
  47
  48 portname=""
  49
  50 while portname=="":
  51         print("Wait for MIDI IN plug ...")
  52         for name in mido.get_input_names():
  53                 matchObj = re.match( r'Mbed', name)
  54
  55                 if matchObj:
  56                         portname=name
  57         time.sleep( 1 )
  58
  59 try:
  60         input_port = mido.open_input(portname)
  61         output_port = mido.open_output(portname)
  62
  63         print('Using {}'.format(input_port))
  64
  65         print("Test MIDI IN")
  66
  67         for message in test_midi_in(input_port):
  68                 print('Test MIDI IN received {}'.format(message.hex()))
  69
  70         test_midi_out_loopback(output_port,input_port)
  71 except KeyboardInterrupt:
  72     pass