Support and General Use > Hardware
AGPTEK Rocker
mittorn:
First, i tried to reduce battery usage.
I've found that rockbox use 10-30% cpu when updating display
After disabling display update when backlight off i've got 1% cpu usage in idle and 3-15% when playing.
It is very strange: on same file it may use only 1.5-2% and may 30%. It just changes randomy on every rockbox start.
I tried to reduce timer frequences, but it only reduced idle usage to 0.7 and playing to 2%.
On "successful" launch (with 2-3% cpu usage), it may work about 11 hours from full battery change (after reducing timer freqs).
Of cause i have some questions:
1. Why not stop timers when no modules using it (when running in idle)?
2. Why use separate thread to run timer? i do not think that constantly switching process context is good for battery usage. Maybe just use signals for interrupts and nanosleep/select for wfi?
3. By default, audio buffer size is larger that used in rockbox. You may increase buffer size to reduce cpu activations while playing. Is it possible to fill buffer only every 2-3 seconds in rockbox?
It seems that firmware kenrel implementation is good, but hosted is very poor.
Bilgus:
Are you running a recent dev version?
mittorn:
Yes, it is 1da2708a7c48c144605d84da94d0184209713683
Dromedary:
I bought a Rocker from Amazon. Came with firmware v 1.31 beta
It falls to update firmware. Gives me messages
"Updater V 1.1"
and then
"v_v Failed"
Anyone familiar with this?
So far tried different SD cards, resetting player, writing to the card using separate card reader. No firmware update works. Not even the AGPTEK's own.
Thanks
Njones:
The latest firmware version for the Rocker is 1.2
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