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OMAP3503 and power switch

SimpleSoft
Intellectual 840 points
Other Parts Discussed in Thread: OMAP3503

I have an Gumstix Overo module based on OMAP3503. i buld my own battery system with charger and gas-gauge. But i have some problem with power on/off module, because this module have no inputs for power button (in Triton). Module have only one power input +3.3v. In this case i build my own power system based on li-ion battery, charger and gas-gauge, and one solution i see - small microcontroller with power button input, and control this input by polling.

But maybe you have another solution?

  • 0
    Genius 5470 points

    I have implemented Windows CE on the Overo and I have full power managment (suspend /resume) working,

    The POWER input labeled on the expansion boards connector can be used as a power (ON/OFF) button.

    I have a N.O. push button wired up to the POWER input and can place the module into suspend by pressing the button.

    Pressing again (or several other methods) can wake it back up. It takes some programming and OMAP know how but it is possible.

    Power managment under Linux seems to be weak but I think the Android folks are fixking that.

  • 0 in reply to DavidVescovi
    Intellectual 840 points

    I am using WinCE also. I place module into suspend mode, but it consume ~130mA @ 3,7V. It is too big for li-ion system.

    May be problem in power managment block?