SW option for SD Card detection

fs-support_ZU · Jan 31st 2014

In general SD Card is detect by CD detect pin (pin12).
A SW option for detection similar to PicoCOMx is inplemented in kernel revision 1.5 or higher:

Code

Reg open \drivers\builtin\sdmmc_ch2
REM UseCardAvailable -> donâ€™t use irq pin if 1
Reg set value UseCardAvailable dword 1
REM CardAvailable=1, card have to be already inserted than you can access. 0 -> Card not accessable
Reg set value CardAvailable dword 1
Reg save

hkoettel · Feb 19th 2014

I have tested it on PicoCOMA5 with WinCE (Kernel Revision 1.03?) from 2013-12-04.
WinCE doesn't show sdcard after boot.

So far I have picocom4 used without cd-pin for sdcard-detection.
On PicoCOM4 is "CardAvailable = 1" is set at "\drivers\BuiltIn\HSMMC".

fs-support_ZU · Feb 20th 2014

Hello,

you are right the SW feature is implemeted in kernel >= 1.05 and they are not released yet. We will do this asp.

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