Allwinner H3 or H5 SoC and IR TX

Hi All,

I have been trying to get IR TX to work from my FriendlyArm NanoPi NEO Air
(Allwinner H3) and NanoPi NEO 2 (Allwinner H5) for a month now.

RX works fine.

I have tried a real time kernel, and I have tried LIRC.

irsend generates the following message:

irsend: hardware does not support sending

I have enabled the PWM GPIO in the kernel.

When I try bit banging, even with the real time patch (Linux 4.14.52), the
timing is not accurate enough. About 25% of the time I can get a signal
sent that can be read by AnalysIR, and about 1% of the time, the signal is
the signal I expected to send.

Does anyone have suggestions on how I can make this work?

Thanks,

Colin.

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