ir_tx/test.py

   1 # ir_tx_test.py Test for nonblocking NEC/SONY/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 with auto repeat.
   8 from sys import platform
   9 ESP32 = platform == 'esp32'
  10 if ESP32:
  11     from machine import Pin
  12 else:
  13     from pyb import Pin, LED
  14 import uasyncio as asyncio
  15 from aswitch import Switch, Delay_ms
  16 # Import all implemented classes
  17 from ir_tx.nec import NEC
  18 from ir_tx.sony import SONY_12, SONY_15, SONY_20
  19 from ir_tx.philips import RC5, RC6_M0
  20
  21 loop = asyncio.get_event_loop()
  22
  23 class Rbutton:
  24     toggle = 1  # toggle is ignored in NEC mode
  25     def __init__(self, irb, pin, addr, data, rep_code=False):
  26         self.irb = irb
  27         self.sw = Switch(pin)
  28         self.addr = addr
  29         self.data = data
  30         self.rep_code = rep_code
  31         self.sw.close_func(self.cfunc)
  32         self.sw.open_func(self.ofunc)
  33         self.tim = Delay_ms(self.repeat)
  34
  35     def cfunc(self):  # Button push: send data
  36         self.irb.transmit(self.addr, self.data, Rbutton.toggle)
  37         # Auto repeat. The Sony protocol specifies 45ms but this is tight.
  38         # In 20 bit mode a data burst can be upto 39ms long.
  39         self.tim.trigger(108)
  40
  41     def ofunc(self):  # Button release: cancel repeat timer
  42         self.tim.stop()
  43         Rbutton.toggle ^= 1  # Toggle control
  44
  45     async def repeat(self):
  46         await asyncio.sleep(0)  # Let timer stop before retriggering
  47         if not self.sw():  # Button is still pressed: retrigger
  48             self.tim.trigger(108)
  49             if self.rep_code:
  50                 self.irb.repeat()  # NEC special case: send REPEAT code
  51             else:
  52                 self.irb.transmit(self.addr, self.data, Rbutton.toggle)
  53
  54 async def main(proto):
  55     # Test uses a 38KHz carrier. Some Philips systems use 36KHz.
  56     # If button is held down normal behaviour is to retransmit
  57     # but most NEC models send a REPEAT code
  58     rep_code = proto == 0  # Rbutton constructor requires False for RC-X. NEC protocol only.
  59     if ESP32:  # Pins for IR LED gate
  60         pin = (Pin(23, Pin.OUT, value = 0), Pin(21, Pin.OUT, value = 0))
  61     else:
  62         pin = Pin('X1')
  63     classes = (NEC, SONY_12, SONY_15, SONY_20, RC5, RC6_M0)
  64     irb = classes[proto](pin, 38000)  # My decoder chip is 38KHz
  65
  66     b = []  # Rbutton instances
  67     px3 = Pin(18, Pin.IN, Pin.PULL_UP) if ESP32 else Pin('X3', Pin.IN, Pin.PULL_UP)
  68     px4 = Pin(19, Pin.IN, Pin.PULL_UP) if ESP32 else Pin('X4', Pin.IN, Pin.PULL_UP)
  69     b.append(Rbutton(irb, px3, 0x1, 0x7, rep_code))
  70     b.append(Rbutton(irb, px4, 0x10, 0xb, rep_code))
  71     if ESP32:
  72         while True:
  73             print('Running')
  74             await asyncio.sleep(5)
  75     else:
  76         led = LED(1)
  77         while True:
  78             await asyncio.sleep_ms(500)  # Obligatory flashing LED.
  79             led.toggle()
  80
  81 # Greeting strings. Common:
  82 s = '''Test for IR transmitter. Run:
  83 from ir_tx_test import test
  84 test() for NEC protocol
  85 test(1) for Sony SIRC 12 bit
  86 test(2) for Sony SIRC 15 bit
  87 test(3) for Sony SIRC 20 bit
  88 test(4) for Philips RC-5 protocol
  89 test(5) for Philips RC-6 mode 0.
  90 '''
  91
  92 # Pyboard:
  93 spb = '''
  94 IR LED on pin X1
  95 Ground pin X3 to send addr 1 data 7
  96 Ground pin X4 to send addr 0x10 data 0x0b.'''
  97
  98 # ESP32
  99 sesp = '''
 100 IR LED gate on pins 23, 21
 101 Ground pin 18 to send addr 1 data 7
 102 Ground pin 19 to send addr 0x10 data 0x0b.'''
 103
 104 print(''.join((s, sesp)) if ESP32 else ''.join((s, spb)))
 105
 106 def test(proto=0):
 107     loop.run_until_complete(main(proto))