Re: mode2 shows output, irrecord fails (using the remote out port of an amplifier)

Hi Robert,

On 2020-03-02 11:14, Robert Jäschke wrote:
> Dear all,
> 
> I have trouble getting irrecord to recognize my remote. With mode2 I can
> see pulse and space data but I can't push irrecord over a couple of dots
> when it tries to recognize my remote. Here's the full story:
> 
> I have connected the REMOTE OUT port of my amplifier (Marantz PM5005)
> with the GPIO pin of my Raspberry Pi¹

The magic word here is that the remote out plug on Maranz outputs the 
signal *inverted* (signal present = low, no signal = high), so that your 
spaces show up as pulses, and vice versa. This explains the very long 
initial "pulse" you see. Taking this into account, your first signal 
decodes as  RC5: {D=16,F=16,T=1} in IrScrutinizer.

Ok, so we know that it is a Marantz amplifier, using RC5 with D=16. So I 
use IrScrutinizer to suck the corresponding device from irdb.tk, and use 
the Lirc-export. Produces the file enclosed.

BTW, irrecord is a really not state-of-the art. Please use 
IrScrutinizer, which runs natively on the RPi. Although in this case it 
would not have helped you, because the driver for reading GPIO inverted 
is still not written...

Greetz,

Bengt

# IrScrutinizer parametric export
#
# Creating tool: IrScrutinizer version 2.2.4
# Creating user: bengt
# Creating date: Thu Mar 05 10:20:20 CET 2020
# Encoding: WINDOWS-1252
#
# Manufacturer: Marantz
# Model: PM5005
# Displayname: 
# Device Class: Amplifier
# Remotename: 
#

# Protocol name: RC5
begin remote
	name		marantz_amp-rc5
	bits		13
	flags		RC5|CONST_LENGTH
	eps		30
	aeps		100
	zero		889	889
	one		889	889
	plead		889
	gap		114000
	toggle_bit	2
	frequency	36000
	begin codes
		POWER_ON/OFF	0x000000000000140C
		MUTE_ATT	0x000000000000140D
		DISPLAY	0x000000000000140F
		VOLUME_+	0x0000000000001410
		VOLUME_-	0x0000000000001411
		SPEAKER_A/B	0x000000000000141D
		SOURCE_DIRECT	0x0000000000001422
		LOUDNESS	0x0000000000001432
		CURSOR_UP	0x0000000000000410
		CURSOR_DOWN	0x0000000000000411
		EXIT_MENU	0x0000000000000413
		CURSOR_LEFT	0x0000000000000415
		CURSOR_RIGHT	0x0000000000000416
		ENTER_(OK)	0x0000000000000417
	end codes
end remote