The STM32F0 Discovery development board uses an STM32F051R8T6 MCU and integrates the ST-LINK/V2-1 debugger and programmer. It also comes with a comprehensive STM32 software HAL library and various packaged software examples.
The STM32 Discovery board features:
STM32F051R8T6 microcontroller featuring 64 KB Flash memory, 8 KB RAM in an LQFP64 package
On-board ST-LINK/V2 with selection mode switch to use the kit as a standalone ST-LINK/V2 (with SWD connector for programming and debugging)
Board power supply: through USB bus or from an external 5 V supply voltage
External application power supply: 3 V and 5 V
- LD1 (red) for 3.3 V power on
- LD2 (red/green) for USB communication
- LD3 (green) for PC9 output
- LD4 (blue) for PC8 output
Two push buttons (user and reset)
Extension header for all LQFP64 I/Os for quick connection to prototyping board and easy probing
An additional board is provided which can be connected to the extension connector for even easier prototyping and probing.
Comprehensive free software including a variety of examples, part of STM32CubeF0 package or STSW-STM32049 for legacy Standard Libraries usage
The Zephyr stm32f0_disco board configuration supports the following hardware features:
|NVIC||on-chip||nested vector interrupt controller|
|UART||on-chip||serial port-polling; serial port-interrupt|
|CLOCK||on-chip||reset and clock control|
Other hardware features are not yet supported in this Zephyr port.
The default configuration can be found in the defconfig file:
Connections and IOs¶
Each of the GPIO pins can be configured by software as output (push-pull or open-drain), as input (with or without pull-up or pull-down), or as peripheral alternate function. Most of the GPIO pins are shared with digital or analog alternate functions. All GPIOs are high current capable except for analog inputs.
Programming and Debugging¶
STM32F0DISCOVERY board includes an ST-LINK/V2-1 embedded debug tool interface. This interface is supported by the openocd version included in the Zephyr SDK.
Flashing an application to Nucleo F030R8¶
Here is an example for the Blinky Application application.
# On Linux/macOS cd $ZEPHYR_BASE/samples/basic/blinky mkdir build && cd build # On Windows cd %ZEPHYR_BASE%\samples\basic\blinky mkdir build & cd build # Use cmake to configure a Ninja-based build system: cmake -GNinja -DBOARD=stm32f0_disco .. # Now run ninja on the generated build system: ninja ninja flash
You will see the LED blinking every second.
You can debug an application in the usual way. Here is an example for the Blinky Application application.
# On Linux/macOS cd $ZEPHYR_BASE/samples/basic/blinky # If you already made a build directory (build) and ran cmake, just 'cd build' instead. mkdir build && cd build # On Windows cd %ZEPHYR_BASE%\samples\basic\blinky # If you already made a build directory (build) and ran cmake, just 'cd build' instead. mkdir build & cd build # If you already made a build directory (build) and ran cmake, just 'cd build' instead. # Use cmake to configure a Ninja-based build system: cmake -GNinja -DBOARD=stm32f0_disco .. # Now run ninja on the generated build system: ninja debug