167 lines
5.0 KiB
Plaintext
167 lines
5.0 KiB
Plaintext
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The battery level(s) can be monitored using the auxilary channels of the ADC
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for the touchscreen. Here are some emails which may be useful:
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From: Simon D Howard <sdh300@ecs.soton.ac.uk>
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To: Tony Lindgren <tony@atomide.com>
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cc: Linux-7110-psion@lists.sourceforge.net
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Subject: Re: [Linux-7110-psion] /proc patch
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Date: Mon, 29 Apr 2002 18:57:35 +0100 (BST)
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On Mon, 29 Apr 2002, Tony Lindgren wrote:
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> So sounds like your SSI extra channel code might work on 5mx!
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> Can you post it so we can try if you don't have a 5mx?
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Well, it wasnt really specific code, I just hacked about with the adc
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code. Currently it listens on the first 2 ports (which give the x, y
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coordinate). If you change the following lines:
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ssi_transmit_data(dev,0xd000);
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ssi_transmit_data(dev,0x9000);
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to
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ssi_transmit_data(dev,0xd000 | 0x2000);
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ssi_transmit_data(dev,0x9000 | 0x2000);
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it ought to read the other channels (according to the adc datasheet
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anyway, it didnt work so it may be that I'm totally wrong). I wrote a
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small program to print the output from /dev/tpanel but I dont have it with
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me right now - I adapted the picogui tpanel code.
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Simon
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_______________________________________________
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Linux-7110-psion mailing list
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Linux-7110-psion@lists.sourceforge.net
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https://lists.sourceforge.net/lists/listinfo/linux-7110-psion
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From: "Thilo Hille" <thilo@resourcery.de>
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To: "Simon D Howard" <sdh300@ecs.soton.ac.uk>,
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"Tony Lindgren" <tony@atomide.com>
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Subject: Re: [Linux-7110-psion] /proc patch
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Date: Tue, 30 Apr 2002 14:40:02 +0200
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gotcha..
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> So sounds like your SSI extra channel code might work on 5mx!
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> Can you post it so we can try if you don't have a 5mx?
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i just tweaked the controlbytes in adc7843.c
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ssi_transmit_data(dev,0xa400); //channel 3
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ssi_transmit_data(dev,0xe400); //channel 4
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and voila shows up the battery state on channel three.
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it stays around 2593 when accus inserted and drops down to <20 (needs about
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a 3 minutes).
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i think there are some capacitors discharging slowly this might be faster
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when the external powersupply is disconnected.
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how do we get this into an own driver?
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Thilo Hille
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resourcery GbR.
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Habsburgerstr. 11
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79104 Freiburg
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Tel.: 0761-4567807
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Fax.: 0761-4567805
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thilo@resourcery.de
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From: "Thilo Hille" <thilo@resourcery.de>
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To: <linux-7110-psion@lists.sourceforge.net>
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Subject: [Linux-7110-psion] power consumtion
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Date: Tue, 30 Apr 2002 14:57:01 +0200
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i just measured the battery current.
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its about 2.74V.
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the adc reports about 2594 (maybe rough mV?)
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Thilo Hille
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resourcery GbR.
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Habsburgerstr. 11
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79104 Freiburg
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Tel.: 0761-4567807
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Fax.: 0761-4567805
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thilo@resourcery.de
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_______________________________________________
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Linux-7110-psion mailing list
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Linux-7110-psion@lists.sourceforge.net
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https://lists.sourceforge.net/lists/listinfo/linux-7110-psion
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From: Simon D Howard <sdh300@ecs.soton.ac.uk>
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To: Thilo Hille <thilo@resourcery.de>
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cc: linux-7110-psion@lists.sourceforge.net
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Subject: Re: [Linux-7110-psion] /proc patch
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Date: Tue, 30 Apr 2002 19:23:27 +0100 (BST)
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On Tue, 30 Apr 2002, Thilo Hille wrote:
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> i just tweaked the controlbytes in adc7843.c
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> ssi_transmit_data(dev,0xa400); //channel 3
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> ssi_transmit_data(dev,0xe400); //channel 4
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> and voila shows up the battery state on channel three.
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> it stays around 2593 when accus inserted and drops down to <20 (needs about
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> a 3 minutes).
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> i think there are some capacitors discharging slowly this might be faster
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> when the external powersupply is disconnected.
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Good news, this seems to work on my revo too. I found this slightly
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surprising as the email tony quoted suggested the battery monitoring was
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done differently. When charging, it seems to reach a maximum of around
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3950 but drops to around 3500 when its finished. EPOC seems to use
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3950-4000 as its "100%" value too - I get similar readings from its
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battery monitor.
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I also get ~2464 (invariant) from the other channel - presumably the
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backup battery.
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> how do we get this into an own driver?
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"with difficulty" :)
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Simon
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_______________________________________________
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Linux-7110-psion mailing list
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Linux-7110-psion@lists.sourceforge.net
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https://lists.sourceforge.net/lists/listinfo/linux-7110-psion
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From: "Thilo Hille" <thilo@resourcery.de>
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To: "Simon D Howard" <sdh300@ecs.soton.ac.uk>
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Cc: <linux-7110-psion@lists.sourceforge.net>
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Subject: Re: [Linux-7110-psion] /proc patch
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Date: Tue, 30 Apr 2002 20:51:00 +0200
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hi simon,
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> I also get ~2464 (invariant) from the other channel - presumably the
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> backup battery.
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hmmm i dont have a backupbattery inserted and ch4 shows up ~4084.
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i dont have one at hands for now, but tomorrow i ll try it.
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did you try to remove the backup battery while watching the 4th channel?
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(hey, its like tv :)
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i really forgot about the backupbattery. i removed it 2 month ago and as id
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never used epoc since than i never needed it.
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greetingz
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Thilo Hille
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resourcery GbR.
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Habsburgerstr. 11
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79104 Freiburg
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Tel.: 0761-4567807
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Fax.: 0761-4567805
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thilo@resourcery.de
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_______________________________________________
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Linux-7110-psion mailing list
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Linux-7110-psion@lists.sourceforge.net
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https://lists.sourceforge.net/lists/listinfo/linux-7110-psion
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