MobileRead Forums - View Single Post - Post-update battery weirdness

dstampe · 03-10-2007, 02:37 AM

I figure it's got nothing to do with the meter itself, there are 2 likely issues.

First, unless the reader is turned on when you charge it, the processor is asleep and does'nt realize it's being charged. Therefore it doesn't update its charge estimate. I don't know if the circuitry in the Reader can wake up the CPU when you plug in the charger.

Second (more speculatively), USB charging may not work if the hub or PC doesn't acknowledge the Reader as a valid device. USB ports have their power turned off under many circumstances. If the Reader only charges with the Connect software running, then this is due to the lack of an installed USB driver. I've never tested USB charging myself.

03-10-2007, 02:37 AM	#62
dstampe dstampe Posts: 50 Karma: 17 Join Date: Jan 2007 Location: Canada Device: Sony PRS-500	I figure it's got nothing to do with the meter itself, there are 2 likely issues. First, unless the reader is turned on when you charge it, the processor is asleep and does'nt realize it's being charged. Therefore it doesn't update its charge estimate. I don't know if the circuitry in the Reader can wake up the CPU when you plug in the charger. Second (more speculatively), USB charging may not work if the hub or PC doesn't acknowledge the Reader as a valid device. USB ports have their power turned off under many circumstances. If the Reader only charges with the Connect software running, then this is due to the lack of an installed USB driver. I've never tested USB charging myself.