User Tools

Site Tools


manual:demos:olimex_em32g880f128stk_gcc

This is an old revision of the document!


ARM-CM3 EFM32 Olimex EM-32G880F128-STK GCC

Supported firmware update interfaces

UART CAN USB TCP/IP SD-card
Yes No No No No

Development Environment

This demo is targeted towards the Olimex EM-32G880F128-STK board, with 128 kB internal Flash EEPROM and 16 kB internal RAM.

To program the bootloader into the internal flash on the EFM32G880 microcontroller, the Segger J-Link JTAG interface was used. However, this is not required if you have another means of programming the internal flash.

The demo programs are pre-configured for building with the Codesourcery G++ Lite (Target OS EABI) toolchain. Alternatively, you can use the GCC ARM Embedded toolchain.

Building and programming the Bootloader

Before the bootloader can be used, it needs to be built and programmed into the EFM32G880's internal flash memory. The steps in this section only need to be done once.

Batch files are added to aid in building the software program. First clean the bootloader program by double-clicking the file “\Target\Demo\ARMCM3_EFM32_Olimex_EM32G880F128STK_GCC\Boot\cmd\clean.bat”. Next, build the bootloader program by double-clicking the file “\Target\Demo\ARMCM3_EFM32_Olimex_EM32G880F128STK_GCC\Boot\cmd\build.bat”. The output should look like:

+++ Compiling [hooks.o]

+++ Compiling [main.o]

+++ Compiling [boot.o]

...

+++ Linking [openblt_olimex_efm32g880.elf]

...

+++ Build complete [openblt_olimex_efm32g880.bin]

The bootloader program is now ready to be programmed into the internal flash memory of the EFM32G880. Using your favorite programmer, flash the bootloader using one of the following files, depending on what file type your programmer supports:

  • \Target\Demo\ARMCM3_EFM32_Olimex_EM32G880F128STK_GCC\Boot\bin\openblt_olimex_efm32g880.elf
  • \Target\Demo\ARMCM3_EFM32_Olimex_EM32G880F128STK_GCC\Boot\bin\openblt_olimex_efm32g880.bin

Building the Demo Program

Batch files are added to aid in building the demo program. First clean the demo program by double-clicking the file “\Target\Demo\ARMCM3_EFM32_Olimex_EM32G880F128STK_GCC\Prog\cmd\clean.bat”. Next, build the demo program by double-clicking the file “\Target\Demo\ARMCM3_EFM32_Olimex_EM32G880F128STK_GCC\Prog\cmd\build.bat”. The output should look like:

+++ Compiling [boot.c]

+++ Compiling [main.c]

...

+++ Linking [demoprog_olimex_efm32g880.elf]

...

+++ Build complete [demoprog_olimex_efm32g880.srec]

The output file is

  • \Target\Demo\ARMCM3_EFM32_Olimex_EM32G880F128STK_GCC\Prog\bin\demoprog_olimex_efm32g880.srec

Firmware update procedure

To download the demo program \Target\Demo\ARMCM3_EFM32_Olimex_EM32G880F128STK_GCC\Prog\bin\demoprog_olimex_efm32g880.srec using the bootloader, follow the instructions in the following links, depending on the communication interface you intend to use:

manual/demos/olimex_em32g880f128stk_gcc.1477314591.txt.gz · Last modified: 2019/09/24 22:13 (external edit)