Legacy switch support

[mpc30]

Hi,

I have a skystar2 card.
I'm thinking of writing a Module (or Plugin?) to control legacy switches (as used by DN equipment - SW21, SW42, etc).

Looks like I can get notification of 'BeforeChannelChange' and could send the legacy switch command at that time.

I need to find someway to control the 13V/18V LNB polarity voltage.
Need to be able to switch this voltage at 8mS = 125bps rate.

What I've deduced from the moduleAPI.h and logs is that this may be possible using DDMODAPI_SET_TUNER calls.

Can anyone provide details of what parameters the DDMODAPI_SET_TUNER API requires ?

Or is there a better way to control LNB polarity voltage ?

Thanks.