• State
  • Locked Locked
  • Replies 2 replies
  • Subscribers 98 subscribers
  • Views 559 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Question on Power Management, AM1808

Nelson Hall
Intellectual 405 points
Other Parts Discussed in Thread: AM1808

AM1808 EVM

MPC Data WinCE BSP v1.10


Ten or so minutes after boot, the UPP port and SD Memory are automatically shut down, likely by power management. Both are used by the application SW, but they will shut down whether used or not. I changed the UPP driver to power back up upon call to UPP_Open, but not sure how to change SD card settings or driver. What is the best way to keep these powered up?

Debug build output where SD Memory is shut down:

260114 PID:1b80002 TID:1120002 [NOTIFY] HandleSystemEvent 7 /REMOVE DSK1:
260130 PID:400002 TID:10b0002 SDMemory: +SMC_Deinit
260171 PID:400002 TID:10b0002 SDMemory: -SMC_Deinit
260173 PID:400002 TID:10b0002 OSAXST1: <<< Unloading Module 'sdmemory.dll' (0x82A6F768) at address 0xC0CE0000-0xC0CFA000 in Process 'NK.EXE' (0x81F89BC0)

Please help,

Nelson

  • 0
    Mastermind 9310 points

    Hi Nelson

    If the issue you're seeing is related to power management you can try the following option. Search for the following entry inside of your platform.reg or sdhc.reg:

    ; CE_DRIVER_POWER_MANAGEABLE_GENERIC_GUID, PMCLASS_PMEXT_GUID   
        "IClass"=multi_sz:"{A32942B7-920C-486b-B0E6-92A702A99B35}",
                          "{0AE2066F-89A2-4D70-8FC2-29AEFA68413C}"

    This entry will be part of the registry entries related with the SDHC driver. After removing that part power management won't be affecting the SD Card slot.

  • 0 in reply to Adeneo Embedded support team
    Intellectual 405 points

    TI,

    FIXED.  Thank you for your help.  Commenting out the "IClass"=multi_sz:"{A32942B7-920C-486b-B0E6-92A702A99B35}" did the trick.

    Nelson