Rockbox General > Rockbox General Discussion
Sansa e200 - wheel light fade in/out, also display fade in/out
casainho:
--- Quote from: jdgordon on November 10, 2007, 08:31:13 AM ---
--- Quote from: casainho on November 07, 2007, 12:14:27 PM ---I paid one time for CPU and for memory, I pay constantly for energy on battery!
--- End quote ---
you know that if the light is on then more batter is being used right? so you end up using more power... especially when you want to get the cpu doing more work which does nothing more than make the display look a bit nicer....
--- End quote ---
But the light is ON 100% of time now! I would like to turn it OFF at for example 80% of the time, to get a very smooth bright and not a hard like now.
One problem that can arise is electric noise because of PWM. Having a switching frequency instead of light always turned ON, may pass noise from switching current of light, to all the circuit system and degrade the audio signal ??
Anyway, I would like to try have the light at 20% ON when It's now ON time. Maybe It will be good for my auto-formation to do that, because I just have small experiences in microcontollers AVR with GCC-AVR and I should learn how to do good programing in C, with kernels and with ARM devices ;-) :-)
ROMzombie:
I just disable it though Settings>System>Wheel Light Timeout>Off.
It's not worth the battery time (or annoyance) to have a blindingly bright LED shining at my face, when it's already got a tactile wheel.
::)
casainho:
--- Quote from: ROMzombie on November 12, 2007, 03:26:58 PM ---I just disable it though Settings>System>Wheel Light Timeout>Off.
It's not worth the battery time (or annoyance) to have a blindingly bright LED shining at my face, when it's already got a tactile wheel.
::)
--- End quote ---
But If you have the option to choose have 10% or others values of the total the wheel light, It will not be blindingly bright LED shining at your face but a smooth beautiful blue light ;-) :-) - that would spend 90% less of battery, in case of 10% of total light.
Until that option for dimming light is true on RB, I have my light turned off.
cannabisman:
I agree, i would like to see the wheel light be able to dim ::)
Vchat20:
Agreed with the poster just above me. The feature is desire not just to have it, but anyone who uses the player will tell you that the wheel light is just a -slight- bit too bright for the eyes depending on the surrounding environment. And just like the LCD backlight/brightness, it deserves a way to set a brightness level.
Looking into the source and specifically at the LCD backlight fading code, it already has the basis of doing this kind of thing purely in software and should be relatively easy to adapt I would think to the wheel light (someone correct me on this who has actually written the code. Specifically I'm looking at the fading code which does a nice PWM-ish job with the backlight).
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