Debug Modes - Silicon Laboratories EFR32xG21B User Manual

8.2 Debug Modes

Programming external devices is done by connecting to a target board through the provided debug connector and by setting the debug
mode to [Out]. The same connector can also be used to connect an external debugger to the EFR32 Wireless SoC on the kit by setting
debug mode to [In].
Selecting the active debug mode is done in Simplicity Studio.
Debug MCU: In this mode, the on-board debugger is connected to the EFR32 on the kit.
Debug OUT: In this mode, the on-board debugger can be used to debug a supported Silicon Labs device mounted on a custom board.
Debug IN: In this mode, the on-board debugger is disconnected, and an external debugger can be connected to debug the EFR32 on
the kit.
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Board
Host
USB
Controller
Computer
Figure 8.1. Debug MCU
Board
Host
USB
Controller
Computer
Figure 8.2. Debug OUT
Board
Host
USB
Controller
Computer
Figure 8.3. Debug IN
UG428: EFR32xG21B 2.4 GHz 10 dBm Wireless Starter Kit User's Guide
RADIO BOARD
External
Hardware
DEBUG HEADER
RADIO BOARD
External
Hardware
DEBUG HEADER
RADIO BOARD
External Debug Probe
DEBUG HEADER
On-Board Debugger
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