Specific support for SmartieParts Rev 2.2 LED backlight driver

[GoogleCodeExporter]

Revision 2.2 of the SmartieParts programmer/backlight board is here! It 
provides support for the HobbyKing LED backlight instead of an EL backlight.  
In order to be compatible with all firmwares (including stock), it is set to be 
on by default and must actively be turned off.  This is opposite to existing 
logic in the firmwares which support backlights.

I suggest a menu entry for "invert light [yes/no]" where choosing yes inverts 
high/low signal on PB7.

Further, 2.2 supports dimming.  Outputting a PWM signal on PB7 with a duty 
cycle ranging from 0% to 100% will affect the brightness. If frequency can be 
set independent of duty cycle, it is advised to be set at 400hz.

I suggest a menu entry that allows the user to set the brightness from 0 to 
100. Perhaps they could choose to assign it to a pot.

Original issue reported on code.google.com by ad...@criticalnode.com on 27 Jun 2012 at 4:29

[GoogleCodeExporter]

Support to invert backlight signal scheduled for next revision (r767)

Original comment by michael....@mypostoffice.co.uk on 18 Jul 2012 at 5:51

[GoogleCodeExporter]

Backlight signal invert option now available.

Original comment by michael....@mypostoffice.co.uk on 14 Dec 2013 at 12:10

• Changed state: Closed