On Thu, Oct 7, 2010 at 11:45 PM, Alex Gonzalez <lang...@gmail.com> wrote: > Hi, > I haven't found any list for generic embedded linux questions so please > redirect > me if you know one. > I am working on a Freescale MX51 board with a MC13892 PMIC which has a > battery driver to > monitor and control the battery. If I were to develop a battery powered > device based on > it, I would need a way to monitor the charge, turn on/off the charger if > needed > depending on battery level and suspend the system if the battery level > drops. > Some battery packs come with external chips that provide this functionality, > but these > battery packs are not available if you are not bulk purchasing. > If I were to use the battery measurements provided by the PMIC to control > the battery > charge I would need to model the specific battery I am goint to use in terms > of > voltage/current graphs. Any known Linux effort towards this? > Also, could the typical laptop user space applications (gnome panel applet > et al) that > typically use ACPI be used on an embedded system? Are there any other > applications > specifically targetted to the embedded market?
No ACPI on ARM yet. But you can take a look into drivers/power/ and the power_supply framework. Basically you need to provide those nodes as in your /sys/class/battery/BAT0/. Software controlled charging would be rather tricky to implement, if it's using an external PMIC for the charging management, and possibly with a good gauge, things would be much easier. > As you may guess it's the first time I work on a battery powered embedded > device. > Thanks for your help, > Alex > _______________________________________________ > linaro-dev mailing list > linaro-dev@lists.linaro.org > http://lists.linaro.org/mailman/listinfo/linaro-dev > > _______________________________________________ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
