@felmue said in M5-TOUGH / unable to change display brightness:
M5.Axp.SetLDOVoltage(3,3000);
Hi Felmue!
That one works, thanks a lot!
Really confusing that there is a PWM backlight LED mentioned in the library which does not work. And that the usage of SetLcdVoltage is inconsistent between the Core2 and TOUGH.
On Core2 the LcdVoltage changes DCDC3 (@param number 0=DCDC1 / 1=DCDC2 / 2=DCDC3 ) which is connected to LCD_BL. For the TOUGH on the other hand DCDC3 is unused and they used the LDO3.
So maybe they should simply change the line SetDCVoltage(2, voltage); to M5.Axp.SetLDOVoltage(3,voltage); or maybe even better introduce a new function SetLCDBacklightVoltage(...) in their library.
Thanks to all for your hints.
