IR wakeup: Create custom u-boot image with code mapping for "undefined decode_type"

[straynrg]

I would like to use the IR wakeup feature on my Odroid N2 with a TV which returns an IRMP code in which the decode_type is undefined.

The page How to configure IR wakeup code states:

the decoded protocol is not implemented you will receive a message like this:

Received IRMP code: scancode='0x00251001', IRMP protocol = 7, decode_type is undefined!

Then a implementation/code mapping for u-boot would be needed.

If I understand correctly, this means i should hard-code the scancode in u-boot, specificially in the odroid-g12-common.h header file and create a custom uboot image.

Can anyone elaborate if I understood this correctly, or give any pointers on what to do?

[Portisch]

No, you will need to implement the whole protocol for your remote first.
This means the timing with start pulse, bit count and and and.

With a quick look I guess you have a unknown variant of RC5.

hardkernel/u-boot/blob/odroidg12-v2015.01/arch/arm/cpu/armv8/g12b/firmware/scp_task/scp_remote.c#L180

[straynrg]

Thank you for your swift response.

@Portisch

No, you will need to implement the whole protocol for your remote first.
This means the timing with start pulse, bit count and and and.

With a quick look I guess you have a unknown variant of RC5.

With the old TV which I still have at hand, the IR wakeup does work and shows a valid decode_type. I added a custom oldtv.remotewakeup file and was done. This seems to contradict your advice to implement the whole protocol for the remote?