Tracing on Silicon Labs EFM32PG12

From SEGGER - Support Wiki
Jump to: navigation, search

This article describes how to get started with trace on the Silicon Labs EFM32PG12 MCU. This article assumes that there is already a basic knowledge about trace in general (what is trace, what different implementations of trace are there, etc.). If this is not the case, we recommend to read Trace chapter in the J-Link User Manual (UM08001). The Silicon Labs EFM32PG12 MCU implements tracing via pins , so a J-Trace can be used for tracing.

Minimum requirements

In order to use trace on the Silicon Labs EFM32PG12 devices, the following minimum requirements have to be met:

  • J-Link software version V6.20d or later
  • Ozone V2.46a or later (if streaming trace and / or the sample project from below shall be used)
  • J-Trace PRO for Cortex-M HW version V1.0 or later

Sample project

Streaming trace

The following sample project is designed to be used with J-Trace PRO and Ozone to demonstrate streaming trace. The project has been tested with the minimum requirements mentioned above and a EFM32 Pearl Gecko PG12 Starter Kit. The sample project comes with a pre-configured project file for Ozone that runs out-of-the box. In order to rebuild the sample project, SEGGER Embedded Studio can be used.

SiliconLabs_EFM32PG12_9MHz_TraceExample.zip

Note: The example is shipped with a compiled .JLinkScriptfile, should you need the original source it can be requested at support@segger.com

To create your own .JLinkScriptfile you can use the following project as reference: Tracing on SEGGER_Cortex-M_Trace_Reference_Board


Specifics/Limitations

The EFM32PG12 product family has additional pins that can be used for tracing. Usually only 5 Pins are mapped to have the trace functionality. In this case however multiple pinout configurations are possible over different ports even. Should you be using our trace example make sure your physical tracepin connections are equal to the ones on the evaluation board used in the example. If not adjust the pin initialization accordingly.

Tested Hardware

EFM32 Pearl Gecko PG12 Starter Kit