Energy Micro EFM32 CPU Support Package

This package contains project templates and system files for the Energy Micro EFM32.

Installation Instructions

CrossWorks Version 2.x Installation Instructions

To install this support package using CrossStudio:

1. Click the Tools > Package Manager menu option to open the package manager window.
2. Right click on the Energy Micro EFM32 CPU Support Package entry and select Install Selected Packages.
3. Click Next to take you to the summary page.
4. Click Next to install the package.
5. Click Finish to close the package manager window.

Alternatively, to manually install this support package:

1. If you have not done so already, follow the CMSIS 3 Support Package installation instructions.
2. Download the file EFM32.hzq using your web browser.
3. Click the Tools > Manually Install Packages menu option.
4. Select the file you have just downloaded to install the package.

To view the support package and its contents:

1. Click the Tools > Show Installed Packages.
2. Click on the Energy Micro EFM32 CPU Support Package link.

Release Notes

1.10

• Added support for EFM32WG devices.
• Updated EFM32 CMSIS files to version 3.20.0
• Removed old CMSIS core library. Existing projects should remove references to $(TargetsDir)/EFM32/lib/cmsis$(LibExt)$(LIB) from the Linker Options > Additional Input Files project property as the library is no longer required.

1.9

• CTL projects now default to a process stack size of 256 bytes. Please note that existing CTL projects will need to specify a process stack size using the Runtime Memory Area Options > Process Stack Size project property in order to work with CrossWorks for ARM version 2.3.1 onwards.
• Increased default main stack size to 256 bytes.
• Updated EFM32 CMSIS files to version 3.0.3

1.8

• Added support for EFM32TG225F16, EFM32TG225F32, EFM32TG225F8, EFM32TG825F16, EFM32TG825F32 and EFM32TG825F8 devices.
• Updated EFM32 CMSIS files to version 3.
• Updated EFM32 SVD files to version 1.6.

1.7

• Project templates now default to using EABI compiler.
• Now uses the CMSIS 3 core support package. Existing projects will need to make the following changes in order for the project to build:
  • Add $(TargetsDir)/EFM32/include/CMSIS and $(TargetsDir)/CMSIS_3/CMSIS/Include to the Preprocessor Options > User Include Directories project property.
  • Remove references to $(TargetsDir)/EFM32/lib/cmsis$(LibExt)$(LIB) from the Linker Options > Additional Input Files project property as the library is no longer required.
  • Remove the file core_cm3.c from the project as it no longer exists or is required.
• Loader now works when AUXHFRCO has been enabled.

1.6

• Added support for EFM32GG and EFM32LG devices.
• Added EABI versions of libraries.

1.5

• Added support for EFM32G222, EFM32G232, EFM32G842 devices.
• Added support for EFM32TG devices.
• Now using CMSIS version 2.0.

1.4

• Added core registers to memory map files.

1.3

• Fixed startup code for applications running in RAM configuration.
• Now uses CMSIS SVD register description files.
• The Target Interface Type property is now set to SWD by default.
• SWD interface will now run at full speed after reset.

1.2

• Added work-around for swapped RAM/FLASH parameter definitions in some Gecko parts.

1.1

• Added memory simulation DLLs.

1.0

• Initial Release.

Documentation

Energy Micro Examples

Energy Micro provide many example projects that can be used with CrossWorks in their Simplicity Studio. To use these examples:

• Download and install Simplicity Studio from Energy Micro's website .
• Start CrossStudio and install the EFM32 CPU support package if it has not been installed already.
• Start Simplicity Studio and from this select the example you want to use, then press the Source button to load the example solution into CrossStudio.

CMSIS Documentation

This package uses Energy Micro's CMSIS files exclusively for device headers and core support.

Debugging Capability

The EFM32 serial wire debug supports SW-DP and not JTAG-DP. The CrossConnect Lite and CrossConnect Classic support single-wire debug using the Cortex SWD Adapter which you can purchase from our website.

If you need to debug an EFM32G you can use a recent Segger J-Link. Alternatively, you can use an FTDI-based JTAG adapter, such as the JTAGkey or JTAGkey-Tiny, together with our Cortex SWD Adapter. Please check to ensure that your FTDI device is compatible with our adapter before attaching!

Known Problems

The flash loader does not support devices with 1KB of RAM (EFM32TG108F4 and EFM32TG110F4), use the EFM32 UART bootloader instead for these parts.