Xsdrn - Run-Time Sdx/Sd1 Interfaces Routing; Xpsdn - Toggle Sdx/Sd1 Interfaces Routing At Next Power-Cycle; Xwsdn - Toggle Sdx/Sd1 Interfaces Routing After N Watchdog Resets; Xsd0N - Sdx Enable (*) - Sferalabs Strato Pi Base Advanced Configuration Manual

XSDRn - run-time SDX/SD1 interfaces routing

Immediately set the SDX/SD1 interfaces routing switch (RA4) to SDA/SDB.
This command can be used only with CMs with embedded eMMC, and only when the SD
card routed to SD1 is not mounted. The CM Lite versions running Linux would not tolerate
a hot swap of the root file system SD card.
Command Description
XSDRA Immediately set SDA to SDX bus, SDB to SD1 (RA4 = L)
(factory default)
XSDRB Immediately set SDA to SD1 bus, SDB to SDX (RA4 = H)
XSDR? return current SDX/SD1 routing

XPSDn - Toggle SDX/SD1 interfaces routing at next power-cycle

Toggle the SDX/SD1 interfaces routing switch (RA4) to SDA/SDB at next power-cycle.
Command Description
XPSD1 enable boot SD toggle at power cycle
XPSD0 disable boot SD toggle at power cycle (factory default)
XPSD? return boot SD toggle at power cycle mode

XWSDn - toggle SDX/SD1 interfaces routing after n watchdog resets

Toggle the SDX/SD1 interfaces routing switch (RA4) to SDA/SDB after n consecutive
watchdog resets.
Command Description
XWSD0 SD switch on watchdog reset disabled (factory default)
XWSDn (n>0) switch boot from SDA/SDB after n consecutive watchdog
resets, if no heartbeat is detected. A value of n > 1 can be used
with XWEA only; if the watchdog enable mode is set to XWED,
then XWSD1 is forced automatically
XWSD? return current watchdog SD toggle mode

XSD0n - SDX enable (*)

Immediately enable/disable the SDX interface (RA5).
This command may be used with the CM Lite only with bare-metal OS versions or when
the OS runs entirely in RAM, as the OS would not tolerate the hot loss of its file system. It
has no effect with CMs with embedded eMMC.
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XSDRA
XSDRB
XSDRn
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XPSD1
XPSD0
XPSDn
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XWSD0
XWSDn
XWSDn
Strato Pi Logic Controller