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IDProjectCategoryView StatusLast Update
0003541FSiMX6Displaypublic2018-12-13 08:55
Reporterzutter Assigned To 
PrioritynormalSeverityminorReproducibilityhave not tried
Status resolvedResolutionfixed 
Product VersionV2.60 
Target VersionV2.70Fixed in VersionV2.70 
Summary0003541: Using boot screen backlight brightness is not adjustable via I2C
DescriptionUsing boot screen backlight brightness is not adjustable via I2C
Steps To Reproducee.g. use kernel display mode16 for create a bootscreen
Additional InformationADP-EDT, ... :pullups on PWRCTRL and LEDCTRL required.
Modify FS_InitLCDCommon:

    // LCD controller is initialized by boot loader
    // We must set contrast voltage
    if( g_LCDRegParms.bUseBootInit && (g_LCDMode.dwType & LCD_TYPE_VEE) )
        DWORD dwVoltage;
        dwVoltage = g_LCDMode.dwContrastValue;
        dwVoltage = GetLCDcontrast(IsVerbose(), dwVoltage);
        FS_ContrastControl( CONTRAST_CMD_SET, &dwVoltage );
    // If use "g_LCDRegParms.bUseExtDll" following both pins are off and will not be ajusted
    // in a later stage so we have to adjust these pins here - else nothing happens
ADD -> FS_BacklightControl(BACKLIGHT_CMD_ON, NULL);
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