• Status Closed
  • Percent Complete
  • Task Type Patches
  • Category LCD
  • Assigned To No-one
  • Operating System iAudio X5
  • Severity Medium
  • Priority Very Low
  • Reported Version
  • Due in Version Undecided
  • Due Date Undecided
  • Votes
  • Private
Attached to Project: Rockbox
Opened by MikeS - 2006-07-25

FS#5712 - X5 Backlight Brightness Improvement/Fix

Improves the backlight brightness setting interface/parameters for the iAudio X5.

Parameters held to acceptable ranges per D305A datasheet:
* PWM frequency reduced to 512Hz to keep within 400-2000Hz range (doesn't hurt brightness).
* PWM duty cycle kept within 15%-100% range.

Higher value now equals brighter display by inverting GPO1 on the PMU. This was reversed before.

Improvements to the set_backlight_brightness function.

Default brightness now the same as the boot setting.

Closed by  linusnielsen
2006-07-25 15:22
Reason for closing:  Accepted

I reviewed it and it seems OK, but I can't test low-level stuff without an actual device.
Gimme one positive user report (except yours) and it's in :)

MikeS commented on 2006-07-25 06:23

Should I grovel for one on IRC? hehe :D

I should warn that it would break your LCD flash patch because of the PMU change since LCD OFF is now 0x80 instead of 0x70.

BTW: How'd you test the backlight thing if you don't have a device?

MikeS commented on 2006-07-25 06:26

Actually, on second thought, it wouldn't really break it or vice versa. Off is simply off as done in pcf50606-x.c.


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