ir_tx_test.py

   1 # ir_tx_test.py Test for nonblocking NEC/RC-5/RC-6 mode 0 IR blaster.
   2
   3 # Released under the MIT License (MIT). See LICENSE.
   4
   5 # Copyright (c) 2020 Peter Hinch
   6
   7 # Implements a 2-button remote control on a Pyboard
   8
   9 from pyb import Pin, LED
  10 import uasyncio as asyncio
  11 from aswitch import Switch, Delay_ms
  12 from ir_tx import NEC, RC5, RC6_M0
  13
  14 loop = asyncio.get_event_loop()
  15
  16 class Rbutton:
  17     toggle = 1  # toggle is ignored in NEC mode
  18     def __init__(self, irb, pin, addr, data, rep_code=False):
  19         self.irb = irb
  20         self.sw = Switch(pin)
  21         self.addr = addr
  22         self.data = data
  23         self.rep_code = rep_code
  24         self.sw.close_func(self.cfunc)
  25         self.sw.open_func(self.ofunc)
  26         self.tim = Delay_ms(self.repeat)
  27
  28     def cfunc(self):  # Button push: send data
  29         self.irb.transmit(self.addr, self.data, Rbutton.toggle)
  30         # Auto repeat
  31         self.tim.trigger(108)
  32
  33     def ofunc(self):  # Button release: cancel repeat timer
  34         self.tim.stop()
  35         Rbutton.toggle ^= 1  # Toggle control
  36
  37     async def repeat(self):
  38         await asyncio.sleep(0)  # Let timer stop before retriggering
  39         if not self.sw():  # Button is still pressed: retrigger
  40             self.tim.trigger(108)
  41             if self.rep_code:
  42                 self.irb.repeat()  # NEC special case: send REPEAT code
  43             else:
  44                 self.irb.transmit(self.addr, self.data, Rbutton.toggle)
  45
  46 async def main(proto):
  47     # Test uses a 38KHz carrier. Some Philips systems use 36KHz.
  48     # If button is held down normal behaviour is to retransmit
  49     # but most NEC models send a RPEAT code
  50     rep_code = False  # Don't care for RC-X. NEC protocol only.
  51     pin = Pin('X1')
  52     if not proto:
  53         irb = NEC(pin)  # Default NEC freq == 38KHz
  54         # Option to send REPEAT code. Most remotes do this.
  55         rep_code = True
  56     elif proto == 5:
  57         irb = RC5(pin, 38000)
  58     elif proto == 6:
  59         irb = RC6_M0(pin, 38000)
  60
  61     b = []  # Rbutton instances
  62     b.append(Rbutton(irb, Pin('X3', Pin.IN, Pin.PULL_UP), 0x1, 0x7, rep_code))
  63     b.append(Rbutton(irb, Pin('X4', Pin.IN, Pin.PULL_UP), 0x10, 0xb, rep_code))
  64     led = LED(1)
  65     while True:
  66         await asyncio.sleep_ms(500)  # Obligatory flashing LED.
  67         led.toggle()
  68
  69 s = '''Test for IR transmitter. Run:
  70 ir_tx_test.test() for NEC protocol
  71 ir_tx_test.test(5) for RC-5 protocol
  72 ir_tx_test.test(6) for RC-6 mode 0.
  73
  74 Ground X3 to send addr 1 data 7
  75 Ground X4 to send addr 0x10 data 0x0b.'''
  76 print(s)
  77
  78 def test(proto=0):
  79     loop.run_until_complete(main(proto))