Thomas,
We've been using SysBatteryInfo every 30 seconds for a very similar purpose
(display) without a problem. Are you _SURE_ that's where the problem lies?
I've not heard of any bugs relating to it. We use:
static void DisplayBattery()
{
SysBatteryKind Kind;
Boolean PluggedIn;
Byte Pct;
SysBatteryInfo (false,NULL,NULL,NULL,&Kind,&PluggedIn,&Pct);
// draw battery outline
if (PluggedIn)
{
// draw "pluged in"
}
else
{
// draw percentage
}
if (ScanIsPalmSymbolUnit())
{
if (Kind == sysBatteryKindLiIon)
// calculate point at which scanning will fail for SPT1700
else
// calculate point at which scanning will fail for SPT1500
// draw to mark scan failure level
}
}
If you are _determined_ to use HrwBatteryLevel, my guess is that you'd have
to use the SysAToDCalibrationTokenType table to convert to voltage, then use
the sysBattVoltageCurve table to convert to percentage. But that's what
SysBatteryInfo is good for, so why reinvent the wheel?
Todd Augsburger
[EMAIL PROTECTED]
Roller Organs
http://www.bright.net/~allmax/index.htm
>Subject: Re: HrwBatteryLevel
>From: "Thomas Werner" <[EMAIL PROTECTED]>
>Date: Tue, 17 Jul 2001 16:28:22 +0200
>X-Message-Number: 13
>
>Hi Todd,
>
>i my project the customer wish to see the battery level in nearly every
>form. I have used/use SysBatteryInfo to get this info (and to test if the
>SPT is in the cradle). But there is/was a problem: if you call
>SysBatterieInfo many times (as i have done; every 10 seconds) you get a
>(memory?) problem (i don't know if this is a PalmOS or
SymbolPalmOS-problem;
>I get this info from Symbol england and USA). After same days the SPT
locked
>(you can't do anythings with it) and you have to put out the batterie and
>put it in again (no reset needed!). It looks like the SPT freezes (same
with
>display on!) and the only PowerOnButton is a batterie out-and-in.
>
>So i changed the cradle-check to HrwDockStatus (every 10 seconds), and call
>SysBatterieInfo only every 15 minutes (or more). So far there was no
problem
>with the program, but i wish to change the SysBatterieInfo to
>HrwBatterieLevel (if there is no memory-problem with this one). So i have
to
>know what the return of HrwBatterieLevel is.
>
>
>Thomas Werner
>E-Mail: [EMAIL PROTECTED]
>
>>Von: [EMAIL PROTECTED]
>>[mailto:[EMAIL PROTECTED]]Im Auftrag von Todd
>>Augsburger
>>Gesendet: Dienstag, 17. Juli 2001 14:36
>>An: Palm Developer Forum
>>Betreff: Re: HrwBatteryLevel
>>
>>
>>
>>Thomas,
>>
>>I have no experience with HrwBatteryLevel, but have found SysBatteryInfo
to
>be sufficient for battery level info on the Symbol SPT1700. Is there a
>specific need?
>
>I have found via experience that the Symbols will scan above 10% with
>Lithium batteries (as on a SPT1700), and 25% with standard batteries (as on
>a SPT1500).
>
>I'll share code if it's applicable to your need.
>
>Todd Augsburger
>[EMAIL PROTECTED]
>Roller Organs
>http://www.bright.net/~allmax/index.htm
>
>
>>Subject: problem with LateWakeupNotification
>>From: "Thomas Werner" <[EMAIL PROTECTED]>
>>Date: Mon, 16 Jul 2001 19:35:09 +0200
>>X-Message-Number: 33
>>
>>...
>>
>>System: Symbol SPT1700 - PalmOS 3.5.2 (latest version from Symbol).
>>
>>Another question: Did sameone know what the return from HrwBatteryLevel
>>meens (i get 255 at 100% BatteryLevel)? I haven't found any Docu for the
>>Hrw-functions.
>>
>>
>>Thanks for your help,
>>
>>Thomas Werner [EMAIL PROTECTED]
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