222 lines
6.5 KiB
ReStructuredText
222 lines
6.5 KiB
ReStructuredText
.. _stm32f072b_disco_board:
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ST STM32F072B-DISCO
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###################
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Overview
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********
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The STM32F072B-DISCO Discovery kit features an ARM Cortex-M0 based STM32F072RB
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MCU with everything required for beginners and experienced users to get
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started quickly. Here are some highlights of the STM32F072B-DISCO board:
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- STM32 microcontroller in LQFP64 package
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- Extension header for LQFP64 I/Os for a quick connection to the prototyping
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board and easy probing
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- On-board ST-LINK/V2, debugger/programmer with SWD connector
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- Board power supply: through USB bus or from an external 5 V supply voltage
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- External application power supply: 3 V and 5 V
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- Six LEDs:
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- LD1 (red/green) for USB communication
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- LD2 (red) for 3.3 V power on
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- Four user LEDs: LD3 (orange), LD4 (green), LD5 (red) and LD6 (blue)
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- Two push-buttons: USER and RESET
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- USB USER with Mini-B connector
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- L3GD20, ST MEMS motion sensor, 3-axis digital output gyroscope
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- One linear touch sensor or four touch keys
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- RF EEprom daughter board connector
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.. image:: img/stm32f072b_disco.jpg
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:width: 272px
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:align: center
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:height: 551px
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:alt: STM32F072B-DISCO
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More information about the board can be found at the
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`STM32F072B-DISCO website`_.
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Hardware
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********
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STM32F072B-DISCO Discovery kit provides the following hardware components:
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- STM32F072RBTT6 in LQFP64 package
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- ARM |reg| 32-bit Cortex |reg| -M0 CPU
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- 48 MHz max CPU frequency
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- VDD from 2.0 V to 3.6 V
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- 128 KB Flash
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- 16 KB SRAM
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- GPIO with external interrupt capability
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- 12-bit ADC with 39 channels
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- 12-bit D/A converters
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- RTC
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- General Purpose Timers (12)
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- USART/UART (4)
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- I2C (2)
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- SPI (2)
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- CAN
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- USB 2.0 full speed interface
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- DMA Controller
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- 24 capacitive sensing channels for touchkey, linear and rotary touch sensors
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More information about STM32F072RB can be found here:
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- `STM32F072RB on www.st.com`_
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- `STM32F072xB reference manual`_
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Supported Features
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==================
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The Zephyr stm32f072b_disco board configuration supports the following hardware
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features:
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+-----------+------------+-------------------------------------+
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| Interface | Controller | Driver/Component |
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+===========+============+=====================================+
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| NVIC | on-chip | nested vector interrupt controller |
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+-----------+------------+-------------------------------------+
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| UART | on-chip | serial port-polling; |
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| | | serial port-interrupt |
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+-----------+------------+-------------------------------------+
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| PINMUX | on-chip | pinmux |
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+-----------+------------+-------------------------------------+
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| GPIO | on-chip | gpio |
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+-----------+------------+-------------------------------------+
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| CLOCK | on-chip | reset and clock control |
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+-----------+------------+-------------------------------------+
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| WATCHDOG | on-chip | independent watchdog |
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+-----------+------------+-------------------------------------+
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| I2C | on-chip | i2c controller |
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+-----------+------------+-------------------------------------+
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| SPI | on-chip | SPI controller |
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+-----------+------------+-------------------------------------+
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| CAN | on-chip | CAN controller |
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+-----------+------------+-------------------------------------+
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.. note:: CAN feature requires CAN transceiver, such as `SK Pang CAN breakout board`_.
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Other hardware features are not yet supported in this Zephyr port.
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The default configuration can be found in the defconfig file:
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``boards/arm/stm32f072b_disco/stm32f072b_disco_defconfig``
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Pin Mapping
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===========
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STM32F072B-DISCO Discovery kit has 6 GPIO controllers. These controllers are
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responsible for pin muxing, input/output, pull-up, etc.
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For mode details please refer to `STM32F072B-DISCO board User Manual`_.
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Default Zephyr Peripheral Mapping:
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----------------------------------
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- UART_1_TX : PB6
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- UART_1_RX : PB7
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- I2C1_SCL : PB8
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- I2C1_SDA : PB9
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- I2C2_SCL : PB10
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- I2C2_SDA : PB11
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- SPI1_SCK : PB3
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- SPI1_MISO : PB4
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- SPI1_MOSI : PB5
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- USER_PB : PA0
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- LD3 : PC6
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- LD4 : PC8
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- LD5 : PC9
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- LD6 : PC7
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- CAN_RX : PB8
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- CAN_TX : PB9
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System Clock
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============
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STM32F072B-DISCO System Clock could be driven by internal or external
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oscillator, as well as main PLL clock. By default System clock is driven
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by PLL clock at 72 MHz, driven by internal 8 MHz oscillator.
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Serial Port
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===========
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STM32F072B-DISCO Discovery kit has up to 4 UARTs. The Zephyr console output
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is assigned to UART 1. Default settings are 115200 8N1.
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Programming and Debugging
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*************************
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Applications for the ``stm32f072b_disco`` board configuration can be built and
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flashed in the usual way (see :ref:`build_an_application` and
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:ref:`application_run` for more details).
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Flashing
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========
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STM32F072B-DISCO board includes an ST-LINK/V2 embedded debug tool interface.
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This interface is supported by the openocd version included in the Zephyr SDK.
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Flashing an application to STM32F072B-DISCO
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-------------------------------------------
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First, connect the STM32F072B-DISCO Discovery kit to your host computer using
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the USB port to prepare it for flashing. Then build and flash your application.
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Here is an example for the :ref:`hello_world` application.
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.. zephyr-app-commands::
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:zephyr-app: samples/hello_world
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:board: stm32f072b_disco
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:goals: build flash
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Run a serial host program to connect with your board. A TTL(3.3V) serial
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adapter is required.
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.. code-block:: console
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$ minicom -D /dev/<tty device>
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Replace <tty_device> with the port where the serial adapter can be found.
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For example, under Linux, /dev/ttyUSB0.
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You should see the following message on the console:
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.. code-block:: console
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Hello World! arm
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Debugging
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=========
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You can debug an application in the usual way. Here is an example for the
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:ref:`hello_world` application.
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.. zephyr-app-commands::
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:zephyr-app: samples/hello_world
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:board: stm32f072b_disco
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:goals: debug
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References
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**********
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.. target-notes::
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.. _STM32F072B-DISCO website:
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http://www.st.com/en/evaluation-tools/32f072bdiscovery.html
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.. _STM32F072B-DISCO board User Manual:
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http://www.st.com/resource/en/user_manual/dm00099401.pdf
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.. _STM32F072RB on www.st.com:
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http://www.st.com/en/microcontrollers/stm32f072rb.html
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.. _STM32F072xB reference manual:
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http://www.st.com/resource/en/reference_manual/dm00031936.pdf
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.. _SK Pang CAN breakout board:
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http://skpang.co.uk/catalog/canbus-can-fd-breakout-board-5v-p-242.html
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