• Status Closed
  • Percent Complete
  • Task Type Patches
  • Category LCD
  • Assigned To No-one
  • Operating System iAudio X5
  • Severity Low
  • Priority Very Low
  • Reported Version
  • Due in Version Undecided
  • Due Date Undecided
  • Votes
  • Private
Attached to Project: Rockbox
Opened by RaeNye - 2006-05-31

FS#5474 - Brightness & Contrast for the X5

1. Adapted the HAVE_BACKLIGHT_BRIGHTNESS control of the H300 for the X5.
2. Added contrast control via VDV voltage of the LCD (same way that the OF does that).

Also edited settings{.h,.c,_menu.c} as appropriate.

comments for commiter:
a. please get rid of lcd_default_contrast() and replace it by DEFAULT_CONTRAST_SETTING on other platforms as well.
b. maybe it’d be wiser to #define HAVE_LCD_CONTRAST instead of checking !defined(LCD_COLOR) || defined(IAUDIO_X5).

Closed by  RaeNye
2006-07-23 22:18
Reason for closing:  Accepted

BillKerr says:


I have managed to get the contrast & brightness patch to work!! The problem is exactly as RaeNye said: the settings need to be reset & rebuilt.
I edited apps/settings.c and changed line 97 from




This forced the stored settings to be rebuilt & reloaded. The brightness & contrast changes perfectly now.


I am looking at this patch to get it into CVS.

Ready for commit:
- resynced with current CVS - tested compilation on h1xx, h3xx, ipod photo, archos player and x5
- apply with patch -p1

Can you tell me in which datapaper and on with site number i can find the register call?

Assuming you refer to the contrast part (the brightness is just modifying PWM rate as done in the H3xx),
the relevant datasheet is the first link in page 31 describes POWER_REG_5 (0x0e) and page 34 describes the relevant field (VDV).

The OF sets contrast in the same manner.


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