Support for 'reversed polarity' LNBs

[kenny@…]

Circularly polarizied LNBs when attached to satellite dishes that have two reflectors are reversed from their normal polarity (e.g., left-hand circular becomes right-hand circular). This patch adds a checkbox selector to the DiSEqC LNB configuration to support reversing the polarity of the LNB. Note that linear signals (i.e., horizontal and vertical) are not affected by this toggle.

This patch also adds two preset types for the existing circular LNB presets that are the same values but reversed.

[kenny@…]

Patch to add in reversal of polarity for circularly polarized LNBs

[danielk]

Partially reviewed patch (I need someone with DiSEqC to sanity check this too).

[danielk]

(In [11371]) Fixes #2473. Adds support for polarity inversion in DiSEqC setups by applying modified patch from kenny at the b org.

This happens when using an even number of reflectors and a circularly polarized signal. In particular, this is a problem with those oddly shaped dishes that are used to recieve data from two different satelite constellations at once.

[anonymous]

In trunk/mythtv/libs/libmythtv/diseqc.cpp

line 1987 " lnb_pol_inv = :POLINV "

should be

line 1987 " lnb_pol_inv = :POLINV, "

missing comma.

[danielk]

(In [11380]) Fixes #2473. Fixes typo in earlier commit.

[anonymous]

I looks like the cmd_repeat and inv_pol database items are getting read/written in the wrong order in this patch.

mythconverg.diseqc_tree has lnb_pol_inv as the last item in the table but dieeqc.cpp sometimes has cmd_repeat as last. Check lines starting about 1943

[danielk]

Can you make a patch?

I don't have DiSEqC, or DVB for that matter, so my write->test->rewrite loop is quite long...

[kenny@…]

Fixes single instance of reversed values in SELECT results.

[danielk]

(In [11398]) Really Fixes #2473. Fixes a copy-n-paste error in [11371].. (looked at, and missed by multiple devs, doh!)

[rocketr at gmail.com]

With this patch mythtv-setup doesn't allow dishpro LNB's to be saved. It also does not allow me to reverse the 'reversed polarity' LNB option.

[anonymous]

To clarify you can now only select reversed polarity LNB's in mythtv-setup and nothing else. It won't save the setting if you disable reversed polarity.

[daniel.chassot@…]

Fix the polarity inversion bool that was not saved in the DB

[daniel.chassot@…]

The polarity inverted flag was never saved to the DB due to type error.(svn head rev11464) I've just attached a patch that fixes this (polinv.patch) This is a nasty bug because the scanner is not working while the inversion is wrong!!

[danielk]

(In [11491]) Fixes #2473. Fixes a bug saving the DiSEqC polarity with patch from Daniel Chassot.

We were saving the string value of the checkbox to the DB as an int, which meant it was always true.

With this change we instead use its boolValue() to save the correct value to the DB.