IR remotes + lirc

Discussions about the new Ryde "Set-top Box" Style Digital ATV Receiver
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m0lte
Posts: 4
Joined: Wed Oct 14, 2020 8:10 am

IR remotes + lirc

Post by m0lte » Thu Oct 15, 2020 9:07 am

Hello, me again.

I've dug out an old Microsoft Media Centre USB IR receiver. It identifies as a Philips eHome Infrared Transceiver, with IR keymap "rc-rc6-mce". The light on it flashes when I press buttons on a Samsung TV remote. Nothing shows up in the IR Test stuff in the menu though. I wonder if there is a way to reconfigure the Ryde receiver not to use GPIO for IR? I don't see lirc on the box so I'm assuming some kernel stuff is used instead?

This is what the kernel spits out when I plug it in:

usb 1-1.1: New USB device found, idVendor=0471, idProduct=0815, bcdDevice= 0.00
usb 1-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 1-1.1: new full-speed USB device number 4 using xhci_hcd
usb 1-1.1: Product: eHome Infrared Transceiver
usb 1-1.1: Manufacturer: Philips
usb 1-1.1: SerialNumber: PH00Vga9
Registered IR keymap rc-rc6-mce
rc rc1: Media Center Ed. eHome Infrared Remote Transceiver (0471:0815) as /devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.1/1-1.1:1.0/rc/rc1
rc rc1: lirc_dev: driver mceusb registered at minor = 1, raw IR receiver, raw IR transmitter
input: Media Center Ed. eHome Infrared Remote Transceiver (0471:0815) as /devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.1/1-1.1:1.0/rc/rc1/input2
mceusb 1-1.1:1.0: long-range (0x1) receiver active
mceusb 1-1.1:1.0: Registered Philips eHome Infrared Transceiver with mce emulator interface version 1
mceusb 1-1.1:1.0: 2 tx ports (0x0 cabled) and 2 rx sensors (0x1 active)

I'm going to go digging today, but would appreciate any pointers please.

Thanks
Tom

MW0RUD
Posts: 35
Joined: Fri Apr 24, 2020 3:09 pm

Re: IR remotes + lirc

Post by MW0RUD » Thu Oct 15, 2020 9:25 am

Hi Tom,
Yes, we are using the kernel IR drivers rather than LIRC, one less dependency. It should be possible to support this properly in the future but I don't have time to look into properly before CAT20. If you are confident with python and in a hurry I can point you at roughly were you need to hack.
Tim

m0lte
Posts: 4
Joined: Wed Oct 14, 2020 8:10 am

Re: IR remotes + lirc

Post by m0lte » Thu Oct 15, 2020 11:54 am

Yes please... just a pointer would be ace.

MW0RUD
Posts: 35
Joined: Fri Apr 24, 2020 3:09 pm

Re: IR remotes + lirc

Post by MW0RUD » Thu Oct 15, 2020 12:06 pm

To get the ir test working you will probably need to use ir-keytable to enable the correct driver after connecting the usb and after every reboot, e.g.

Code: Select all

ir-keytable -p rc-rc6-mce
To get ryde to work with it you will probably only need to edit ~/ryde/rydeplayer/ir.py

You will at least need to add rc-rc6-mce to the valid drivers list around line 83 and modify the device name from ir_gpio_recv around line 247

Let me know if you get it working and what changes you made as it will make it easier to integrate properly later.

Tim

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