|
Rockbox mail archiveSubject: FW: USB charging issues when H340 is low batteryFW: USB charging issues when H340 is low battery
From: Mat Mirabella <mathew.mirabella_at_gmail.com>
Date: Fri, 27 Oct 2006 08:23:57 +1000 Hi All. Is anyone going to have a go at trying to answer my issues/problems re charging via USB on Iriver H340? It is still the same situation with the latest rockbox... The unit powers down and will not charge via USB if the battery level is low. Does anyone else have this issue or know what the problem may be. I know that charging is not yet really in rockbox... But my problem is charging in general... Won't work via USB if battery is low. It is not probably a rockbox problem as such. It might however occur because rockbox keeps playing until the battery is so low that when it powers off due to low battery... The battery is too low by that stage to boot into battery charge mode in iriver firmware via USB. The issue is described in detail below. Mat. -----Original Message----- From: Mat Mirabella [mailto:mathew.mirabella_at_gmail.com] Sent: Thursday, 5 October 2006 9:38 AM To: rockbox_at_cool.haxx.se Subject: USB charging issues when H340 is low battery Hi all. I am having problems with charging my Iriver H340 via USB. I am using the Oct 1 rockbox build at the moment with patched Iriver firmware v1.30, and the charge via USB option in the Iriver firmware is set to "on". Charging works fine with the power supply, but USB has problems. If the unit has good enough battery charge to be used in rockbox for normal use, and i want to charge it a bit via USB, i can do so by turning it off, holding REC, plugging it in, waiting for it to go into the Iriver firmware, and then it does go into "Charging" mode... but this does not seem to work for when the battery is flat - i would have thought a more critical time for it. When the unit just dies due to low battery when in use, it used to be able to charge via USB as soon as it was plugged into USB. Now, the unit keeps cycling through boot and shutdown with low battery warnings, and does not seem to get into charge mode. This is the case even when holding down REC when starting. the sequence is this: 1. plug device into USB 2. device begins to power up and you see the rockbox boot loader screen. 3. Device begins to go into rockbox 4. Before the rockbox logo etc, there is a "low battery" warning 5. The device shuts down. this takes about 5 seconds or so, and all steps repeat over and over. it stops if i remove the device from USB. If i hold down REC at any time during the startup sequence, or even hold REC before plugging the unit in, the device does the following: 1. plug device into USB while holding REC or hold REC just after plugging in. 2. device begins to power up and you see the rockbox boot loader screen. 3. Device screen flashes off and on to indicate that it is going to go into the Iriver firmware 4. Device goes into the Iriver firmware and sits for a bit as it 5. The device shuts down, first showing the iriver firmware shutdown screen. this takes about 10 seconds or so, and all steps repeat over and over. it stops if i remove the device from USB. the same happens no matter how long i hold REC. Normally, you would expect the device to go into charge mode after booting into the Iriver firmware. This does not happen when the unit has a low battery. Could this be because rockbox (when in normal use) does not die until the battery is so low that there is not even enough charge to boot up to the point where charging can occur via USB? If so, then this seems to be a problem. Has anyone else experienced this problem? I think it would be useful to have something in the wiki or the manual that describes all the possibilities related to battery charging via USB or power etc. AFAIK the manual does not have any section on how to work with the battery etc. Also, sometimes i can hear a high pitched sound coming out of the body of the unit when i have the USB cable plugged in. This is like the high pitched TV tube sound you can sometimes hear coming from TV sets. It does not happen all the time, but is most common when the unit is in the state i am describing here - that is, has a low battery and won't charge via USB. Regards. Mat. Received on 2006-10-27 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |