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Subject: Re: AW: Update to the AJRv1 recharging

Re: AW: Update to the AJRv1 recharging

From: Jerry Van Baren <gerald.vanbaren_at_smiths-aerospace.com>
Date: 2005-02-24

Matthias Klumpp wrote:
> Hi Jerry,
>
> # -----Ursprüngliche Nachricht-----
> # An update: In the software I attempt to close the powermgmt.csv file
> # when USB is plugged in, but I'm not sure it is successful. I ran a
> # recharge test overnight and ended up with a zero length file :-(.
> #
> # If you are running a test for me, get the file off the AJR by
> # 1) Power your AJR off (which will close the file)
> # 2) Power it back on
> # 3) Plug in the USB right away (I don't open the powermgmt.csv file for
> # one minute after power up).
>
> I just tried out your AJZ, but even doing 1)-3) I'm getting a 0 byte CSV.
>
> Here's exactly what I did (AJZ in JB's root, RB 2.4 in flash):
>
> - Connect charger
> - ROLO AJZ
> - Run JB for 5min (just a test to get firm with that CSV thing)
> - I see the CSV in the root
> - Disconnect charger (if I don't disconnect it, I'm not able to power it
> off - it then only goes to the charging pop-up)
> - Power on with batteries
> - Connect USB immediately
> - I see the CSV also on the PC, but empty
>
> What's wrong ?
>
> Regards
>
> Matthias

Hi Matthias,

A zero length CSV is symptomatic of the file not being closed properly.
    Linus sent a hint that I should call fsync() after the write which
would be a better solution to the USB/zero length problem, but I have
not done that yet.

Ronald Teune generated a CSV yesterday of a charge cycle with a ~9v
charger supply so getting a charge sample from your set up is less
important now. I need to compare his results with mine (stock charger &
battery), but it looks good so far...

Thanks,
gvb
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Received on Thu Feb 24 19:14:36 2005


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