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manual:demos:stm32f3_discovery_gcc

ARM-CM4 STM32 STMicroelectronics STM32F3-Discovery GCC

Supported firmware update interfaces

RS232 CAN USB TCP/IP SD-card
No No Yes No No

Development Environment

This demo is targeted towards the STM32F3-Discovery board, with 256 Kb internal Flash EEPROM and 48 Kb internal RAM.

To program the bootloader into the internal flash, the on-board ST-Link debugger interface was used (USB ST-LINK connector). Firmware updates via USB use the USB USER connector on the board. This means that no additional hardware is needed, besides a standard micro-USB cable.

To build the demo programs you can use the GNU ARM Embedded toolchain.

Toolchain configuration

The demo programs are configured for building with a Makefile. Before attempting to perform a build, update the location of the toolchain binaries (i.e. arm-none-eabi-gcc) in the Makefile. It is set in variable TOOL_PATH. If the toolchain binaries are available on the path, then the TOOL_PATH variable can be left empty.

It is assumed that tools such as GNU make and rm are installed and available on the path. For (Ubuntu) Linux users this can be achieved by running command: sudo apt-get install build-essential. Windows users can install the GNU MCU Eclipse Windows Build Tools.

Building and programming the Bootloader

Before the bootloader can be used, it needs to be built and programmed into the STM32F303's internal flash memory. The steps in this section only need to be done once.

To build the bootloader, open a command prompt in directory \Target\Demo\ARMCM4_STM32F3_Discovery_F303VC_GCC\Boot\ and run the command:

make clean all

The expected output is:

+++ Cleaning build environment
+++ Clean complete
+++ Assembling [startup_stm32f303xc.s]
+++ Compiling [main.c]
+++ Compiling [hooks.c]
...
+++ Linking [openblt_stm32f303.elf]
...
+++ Build complete [openblt_stm32f303.srec]

The bootloader program is now ready to be programmed into the internal flash memory of the STM32F303. Using your favorite programmer (i.e. OpenOCD or STM32 ST-Link utility), flash the bootloader using one of the following files, depending on what file type your programmer supports:

  • \Target\Demo\ARMCM4_STM32F3_Discovery_F303VC_GCC\Boot\bin\openblt_stm32f303.elf
  • \Target\Demo\ARMCM4_STM32F3_Discovery_F303VC_GCC\Boot\bin\openblt_stm32f303.srec

Building the Demo Program

To build the user program, open a command prompt in directory \Target\Demo\ARMCM4_STM32F3_Discovery_F303VC_GCC\Prog\ and run the command:

make clean all

The expected output is:

+++ Cleaning build environment
+++ Clean complete
+++ Assembling [startup_stm32f303xc.s]
+++ Compiling [timer.c]
+++ Compiling [main.c]
...
+++ Linking [demoprog_stm32f303.elf]
...
+++ Build complete [demoprog_stm32f303.srec]

The output file is

  • \Target\Demo\ARMCM4_STM32F3_Discovery_F303VC_GCC\Prog\bin\demoprog_stm32f303.srec

Firmware update procedure

To download the demo program \Target\Demo\ARMCM4_STM32F3_Discovery_F303VC_GCC\Prog\bin\demoprog_stm32f303.srec using the bootloader, follow the instructions in the following links, depending on the communication interface you intend to use:

For firmware updates via USB, keep in mind that the USB cable should be connected to the USB USER connector on the board and not the USB ST-LINK connector.

manual/demos/stm32f3_discovery_gcc.txt · Last modified: 2020/02/06 16:29 by voorburg