Bosch XDK110 General Information Manual page 33

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Picture 18: Mouseover for XDK Port Identifier
3.5.2 Operation Modes
This chapter describes the different operation modes of the XDK, how to determine in which mode
XDK is and how to switch between them. Please note that in normal operation, XDK Workbench
will automatically detect the mode XDK currently is in. Furthermore, XDK Workbench will try to
automatically perform the mode switch that is required for its correct function. However, there may
be certain situations in which the automatic detection or the automated switching does not work. In
general, XDK knows the following modes:
Bootloader Mode
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Application Mode
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Assertion
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Stack Overflow
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Bootloader Mode
The XDK bootloader is stored in the first 64 kB of XDKs flash memory. It is write protected and
represents the only piece of software on XDK that shall not be modified by an XDK user. When the
bootloader is no longer present or becomes corrupted, an update or recovery is only possible via
the J-Link JTAG Adapter (see below).
The bootloader allows uploading XDK applications via USB (see XDK Bootloader User Guide for
further information). The bootloader is write-protected and can only be overwritten or updated
using the J-Link JTAG Adapter (sold separately) via XDK Workbench.
When powering up, XDK will automatically go into the bootloader mode, which is indicated by the
red LED. If XDK finds a valid application, the bootloader will automatically turn off the red LED and
start the application.
In case no valid application is found or XDK is forced to go into bootloader mode, the yellow LED
indicates whether XDK is successfully connected to a PC. Once the red and yellow LEDs are solid
on, XDK shows up in the device view of XDK Workbench and can be programmed.
XDK110
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copying and passing on to third parties. BOSCH and the symbol are registered trademarks of Robert Bosch GmbH, Germany.
Note: Specifications within this document are subject to change without notice.
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