Mini Remote Control: No signal sent is valid?

[eat-sleep-code]

@tannewt

I am tinkering with parts from an old AdaBox -- a Circuit Playground Express and Mini Remote Control [Product ID: 389].

I installed CircuitPython 6.3.0 on the Circuit Playground Express. I also created a lib folder on the CPE and dropped the adafruit_irremote.mpy from Bundle for Version 6.x in it.

I then placed this code into a code.py file on it:

import board
import pulseio
import adafruit_irremote

pulseIn = pulseio.PulseIn(board.IR_RX, maxlen=120, idle_state=True)
decoder = adafruit_irremote.GenericDecode()

print("start")

while True:
    pulses = decoder.read_pulses(pulseIn)
    try:
        received = decoder.decode_bits(pulses)
    except adafruit_irremote.IRNECRepeatException:
        print("Repeat Exception")
        continue
    except adafruit_irremote.IRDecodeException:
        print("Decode Exception")
        continue
    except Exception as ex:
        print("General Exception", ex)
        continue
   
    print("Code received", received)

When I press the UP button (shown here pressed several times), this is the output.

General Exception IRMessage(pulses=(6366, 251, 181, 241, 175, 191, 511, 249, 177, 273, 179, 214, 181, 271, 176, 2323, 175, 245, 181), reason='Pulses do not differ')
General Exception IRMessage(pulses=(179, 242, 174, 247, 179, 269, 178, 299, 179), reason='Too short')
General Exception IRMessage(pulses=(172,), reason='Too short')
Code received None
General Exception IRMessage(pulses=(178,), reason='Too short')
General Exception IRMessage(pulses=(179, 240, 176, 276, 197, 253, 205, 274, 179, 272, 175, 474, 181, 270, 177, 245, 181, 297, 311, 281, 181, 269, 178, 242, 174, 280, 178, 245, 182), reason='Pulses do not differ')
General Exception IRMessage(pulses=(174,), reason='Too short')
General Exception IRMessage(pulses=(179, 270, 177, 299, 179, 243, 172, 222, 173, 1685, 178, 724, 181, 1114, 176, 359, 182, 831, 178, 272, 175, 840, 206, 327, 177), reason='Only mark & space handled')

Not once did I appear to receive a valid code.

I am not sure what is incorrect with my code -- for the most part it is pretty close to the example provided on the IR Test with Remote page.

[eat-sleep-code]

I tried simplifying, with this code...

while True: 
    decoder = adafruit_irremote.NonblockingGenericDecode(pulseIn)
    for message in decoder.read():
        if isinstance(message, adafruit_irremote.IRMessage):
            print(message.code)
        else:
            try:
                print(message, len(pulseIn))
            except:
                print(message)

And all I get is this kind of output:

IIRMessage(pulses=(65535,), reason='Too short') 1
IRMessage(pulses=(65535,), reason='Too short') 1
IRMessage(pulses=(65535,), reason='Too short') 6
IRMessage(pulses=(61219,), reason='Too short') 1
IRMessage(pulses=(65535,), reason='Too short') 0
IRMessage(pulses=(65535,), reason='Too short') 3
IRMessage(pulses=(65535,), reason='Too short') 3
IRMessage(pulses=(65535,), reason='Too short') 3
IRMessage(pulses=(65535,), reason='Too short') 1
IRMessage(pulses=(65535,), reason='Too short') 1
IRMessage(pulses=(65535,), reason='Too short') 1
IRMessage(pulses=(65535,), reason='Too short') 1
IRMessage(pulses=(65535,), reason='Too short') 1
IRMessage(pulses=(65535,), reason='Too short') 3
IRMessage(pulses=(65535,), reason='Too short') 1
IRMessage(pulses=(65535,), reason='Too short') 1
IRMessage(pulses=(65535,), reason='Too short') 1
IRMessage(pulses=(65535,), reason='Too short') 1
IRMessage(pulses=(65535,), reason='Too short') 1
IRMessage(pulses=(65535,), reason='Too short') 1
IRMessage(pulses=(65535,), reason='Too short') 1
IRMessage(pulses=(65535,), reason='Too short') 1
IRMessage(pulses=(65535,), reason='Too short') 1
IRMessage(pulses=(65535,), reason='Too short') 1
IRMessage(pulses=(65535,), reason='Too short') 1

I tried with not only the Adafruit Mini Remote as well as the remote of my cable box, as well as the remote for a small video projector. All three appear to have the same experience, with no pulses over 6 in length and a majority just being 1 pulse long.

Looking at the code, it is expecting a minimum of 10 pulses. Which does not appear to ever happen with any of these remotes.

[eat-sleep-code]

Ok, I had a second CPX that is running CircuitPython 3.x :-)

I placed this code in it...

import board
import pulseio
import adafruit_irremote

pulseIn = pulseio.PulseIn(board.IR_RX, maxlen=120, idle_state=True)
decoder = adafruit_irremote.GenericDecode()

print("start")

while True:
    pulses = decoder.read_pulses(pulseIn)
    try:
        received = decoder.decode_bits(pulses)
    except Exception as ex:
        continue
   
    print("Code received", received)

And I get this when pressing up, down, left, right, up, down, left, and right:

start
Code received [255, 2, 95, 160]
Code received [255, 2, 79, 176]
Code received [255, 2, 239, 16]
Code received [255, 2, 175, 80]
Code received [255, 2, 95, 160]
Code received [255, 2, 79, 176]
Code received [255, 2, 239, 16]
Code received [255, 2, 175, 80]

This is very consistent. So it appears this works on an ancient version of CircuitPython, but not the current version. It appears, that in the last 2 or 3 years some change has borked the functionality of this library.

[eat-sleep-code]

Tried going to CircuitPython 7.0-RC1 but that opened up a whole other problem that I will raise after getting this working in 6.x.

[tannewt]

Thanks for filing an issue for this! I'm going to move it to the core repo since it seems dependent on CP version.

[DavePutz]

I tested the last script on CP 7.0.0-rc.1 and it worked correctly - no errors.

[eat-sleep-code]

@DavePutz On 7.0.0-rc.1 I am getting a weird blink seqence on the Circuit Playground Express. Yellow flash of all the Neopixels and then two red flashes of all the neopixels, a pause and repeat of the red flashes.

[tannewt]

@eat-sleep-code Those are the new status blinks for 7. The yellow flashes are the wait for safe mode on start up. The double red flashes indicate that the code.py ended due to an exception. The exception backtrace will show on the serial output.

[eat-sleep-code]

@tannewt @DavePutz I ran the second two code samples on 7.0 RC-1 and see the same behavior I saw on 6.x. It does not detect valid button presses like it use to in Circuit Python 3.x

boot_out.txt

[dhalbert]

I am moving this to the 7.x.x milestone since the bug was already present in 6.3.0.

[eat-sleep-code]

This is still not resolved as of 7.1.0-beta.3