Overview

BatteryGraph is a program for monitoring battery status on a PalmOS compatible device. Every time you switch on or off your device the program will log the current battery status in a database. On the main screen the battery percentage and voltage over the last few days will be drawn as a line in a graph. It can also display the device on-time per day wich will be drawn as bars. Furthermore it will display the total on-time since the last (autodetected) charge (or new batteries) and the current battery status on the main screen.

On the status screen it displays the current battery status, the battery warning and critical threshold, whether or not the device is plugged in (battery is charging) and the battery type. It also shows the number of records in the database and the current size in kilobytes. Furthermore it show the last detected charge date and time and how long the device has been switched on and off since then. It will also show the amount of on-time for today.

On the statistics screen it will show the average/minimum/maximum ontime per day over a selectable period. It also shows the avg/min/max number of times per day during that period as well as the average time between switch-on and switch-off.

The program should work on every Palm OS based device running Palm OS 3.5 or higher. Besides the standard palm resolution of 160x160 it also supports Sony Hi-Res (on Clie's) as well as Palm Hi-Res (OS5) for 320x320 resolution.

Features

Displays battery percentage and voltage level in a graph
Displays device on time per day
Displays total time, device on-time and device off-time since last charge
Displays statistics (avg/min/max ontime per day, avg/min/max times switched on per day, average time between switch-on and switch-off)
Auto detects last charge date
User configurable display interval
User configurable amount of data to store (maximum number of days or switch-on/off events)
Color support, with user configurable colors
Sony Hi-Res support (320x320)
Palm Hi-Res support on OS5 (320x320)
Works without using any hacks! (No HackMaster or X-Master required)
OS5 compatible

About development

This program is written in C and developed under Linux Redhat using PRC-Tools and Pilrc. It has been succesfully tested on the Palm OS Emulator (POSE) using ROM-images of the following devices:

Sony Clie SJ-30 (OS 4.1, Color, Hi-Res)
Palm M505 (OS 4.0, Color)
Palm VIIx (OS 3.5, Grayscale)

It has also been succesfully tested under the Palm OS Simulator (OS5). Furthermore it has been tested on the following actual devices:

Sony Clie SJ-30 (OS 4.1, Color, Hi-Res)
Sony Clie SL-10 (OS 4.1, Grayscale, Hi-Res)

After release I have had reports that it succesfully works on various devices such as: Palm IIIc, Vx, m515, Zire, Zire 71, Tungsten|T, Tungsten|C, Tungsten|E, Sony S320, S360, T615c, N710c, NR70/V, NX80/V.

Thanks to

Thanks to the following people for betatesting and/or bugtesting and reporting:

Daniel Palomo van Es
Patrick van Lochem
Bryan Welch
Tim Wood
Bastian Sauert

Contact

If you have any questions, comments, suggestions, problems or found a bug, please contact me by sending me an