8.2 Debug Modes

Programming external devices is done by connecting to a target board through the provided Debug IN/OUT 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.

RADIO BOARD

Board

Controller

USB

Host

Computer

DEBUG HEADER

External

Hardware

Figure 8.1. Debug MCU

Debug OUT: In this mode, the on-board debugger can be used to debug a supported Silicon Labs device mounted on a custom board.

Board

Controller

USB

Host

Computer

DEBUG HEADER

External

Hardware

RADIO BOARD

Figure 8.2. Debug OUT

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.

Board

Controller

USB

Host

Computer

DEBUG HEADER

External Debug Probe

RADIO BOARD

Figure 8.3. Debug IN

UG261: EFR32MG12 2.4 GHz 10 dBm Radio Board User's Guide

On-Board Debugger

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