[mythtv-users] HDPVR IR blaster slow

[Joseph Fry]

On Sat, Jun 20, 2015 at 3:13 PM, Gary Buhrmaster <gary.buhrmaster at gmail.com>
wrote:

> On Sat, Jun 20, 2015 at 6:43 PM, Joseph Fry <joe at thefrys.com> wrote:
> ....
> > I know that i2c_master_send can handle up to 64k... so I think I may try
> and
> > force it to send everything in one go rather than breaking it up.  I
> doubt
> > it will work, but it would be interesting if it did.
> >
> > Beyond that, I can't see anything else to do to make this faster.
>
> You will likely have to look at the IC datasheets, HD-PVR schematics,
> and HD-PVR firmware (only the first is likely publicly available) to know
> what can be sent across the i2c bus.  It can be fun experimenting and
> reverse engineering, but it may not be successful.
>
> At some point, it is likely going to be worth your time to simply purchase
> another transmitter (but you probably already knew that).
>
> Good luck.


Believe it or not... it works fine passing all 400 bytes at once.  Shaved
the time for 10 key presses from over 10 seconds to under 9 seconds... sigh.
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