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boards: arm: Add stm32f072-eval board support
Add the STM32F072-EVAL Board minimal support. Signed-off-by: Neil Armstrong <[email protected]>
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‎boards/arm/stm32f072_eval/CMakeLists.txt

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zephyr_library()
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zephyr_library_sources(pinmux.c)
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zephyr_library_include_directories(${PROJECT_SOURCE_DIR}/drivers)

‎boards/arm/stm32f072_eval/Kconfig.board

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# Kconfig - STM32F072-EVAL board configuration
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#
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# Copyright (c) 2017 BayLibre, SAS
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#
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# SPDX-License-Identifier: Apache-2.0
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#
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config BOARD_STM32F072_EVAL
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bool "STM32F072-EVAL Development Board"
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depends on SOC_STM32F072XB

‎boards/arm/stm32f072_eval/Kconfig.defconfig

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# Kconfig - STM32F072-EVAL board configuration
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#
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# Copyright (c) 2017 BayLibre, SAS
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#
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# SPDX-License-Identifier: Apache-2.0
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#
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if BOARD_STM32F072_EVAL
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config BOARD
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default stm32f072_eval
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if UART_CONSOLE
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config UART_STM32_PORT_2
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default y
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endif # UART_CONSOLE
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endif # BOARD_STM32F072_EVAL

‎boards/arm/stm32f072_eval/board.cmake

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include(${ZEPHYR_BASE}/boards/common/openocd.board.cmake)

‎boards/arm/stm32f072_eval/board.h

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/*
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* Copyright (c) 2017 BayLibre, SAS
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef __INC_BOARD_H
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#define __INC_BOARD_H
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#include <soc.h>
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/* TAMPER push button */
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#define TAMPER_PB_GPIO_PORT "GPIOC"
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#define TAMPER_PB_GPIO_PIN 13
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/* Joystick Right push button */
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#define JOYSTICK_RIGHT_PB_GPIO_PORT "GPIOE"
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#define JOYSTICK_RIGHT_PB_GPIO_PIN 3
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/* Joystick Left push button */
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#define JOYSTICK_LEFT_PB_GPIO_PORT "GPIOF"
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#define JOYSTICK_LEFT_PB_GPIO_PIN 2
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/* Joystick UP push button */
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#define JOYSTICK_UP_PB_GPIO_PORT "GPIOF"
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#define JOYSTICK_UP_PB_GPIO_PIN 9
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/* Joystick Down push button */
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#define JOYSTICK_DOWN_PB_GPIO_PORT "GPIOF"
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#define JOYSTICK_DOWN_PB_GPIO_PIN 10
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/* Joystick Sel push button */
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#define JOYSTICK_SEL_PB_GPIO_PORT "GPIOA"
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#define JOYSTICK_SEL_PB_GPIO_PIN 0
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/* LD1 green LED */
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#define LD1_GPIO_PORT "GPIOD"
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#define LD1_GPIO_PIN 8
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/* LD2 orange LED */
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#define LD2_GPIO_PORT "GPIOD"
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#define LD2_GPIO_PIN 9
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/* LD3 red LED */
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#define LD3_GPIO_PORT "GPIOD"
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#define LD3_GPIO_PIN 10
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/* LD4 blue LED */
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#define LD4_GPIO_PORT "GPIOD"
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#define LD4_GPIO_PIN 11
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/* Create aliases to make the basic samples work */
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#define SW0_GPIO_NAME TAMPER_PB_GPIO_PORT
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#define SW0_GPIO_PIN TAMPER_PB_GPIO_PIN
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#define LED0_GPIO_PORT LD1_GPIO_PORT
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#define LED0_GPIO_PIN LD1_GPIO_PIN
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#define LED1_GPIO_PORT LD2_GPIO_PORT
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#define LED1_GPIO_PIN LD2_GPIO_PIN
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#endif /* __INC_BOARD_H */

‎boards/arm/stm32f072_eval/doc/img/stm32f072_eval.jpg

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‎boards/arm/stm32f072_eval/doc/stm32f072_eval.rst

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.. _stm32f072_eval_board:
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ST STM32F072-EVAL
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###################
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Overview
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********
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The STM32F072-EVAL Discovery kit features an ARM Cortex-M0 based STM32F072VBT6 MCU
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with a wide range of connectivity support and configurations.
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Here are some highlights of the STM32F072-EVAL board:
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- Four 5 V power supply options: power jack, ST-LINK/V2 USB connector, user USB connector, or daughter board
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- Stereo audio jack, which supports a headset with microphone connected to DAC and ADC of STM32F072VBT6.
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- 2G Byte (or more) SPI interface MicroSD card
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- I2C compatible serial interface temperature sensor
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- RF E2PROM
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- RS232 and RS485 communication
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- IrDA transceiver
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- IR LED and IR receiver
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- SWD debug support, ST-LINK/V2 embedded
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- 240x320 TFT color LCD connected to SPI interface of STM32F072VBT6
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- Joystick with 4-direction control and selector
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- Reset and tamper buttons
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- Four color user LEDs and two LEDs as MCU low power alarm
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- Extension connector for daughter board or wrapping board
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- MCU voltage choice: fixed 3.3 V or adjustable from 1.65 V to 3.6 V
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- USB full-speed connector
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- Touch sensing buttons
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- RTC with backup battery
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- CAN2.0A/B compliant connector
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- Light Dependent Resistor (LDR)
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- Potentiometer
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- Two HDMI connectors with DDC and CEC
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- Smart Card slot
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- Motor control connector
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.. image:: img/stm32f072_eval.jpg
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:width: 540px
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:align: center
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:height: 549px
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:alt: STM32F072-EVAL
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More information about the board can be found at the `STM32F072-EVAL website`_.
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Hardware
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********
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STM32F072-EVAL Discovery kit provides the following hardware components:
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- STM32F072VBT6 in LQFP100 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 with HW parity
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- GPIO with external interrupt capability
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- one 12-bit ADC with 16 channels
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- one 12-bit D/A converters with 2 channels
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- RTC
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- Advanced-control Timer
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- General Purpose Timers (8)
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- Watchdog Timers (2)
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- USART (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 OTG FS with on-chip PHY
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- CRC calculation unit
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- DMA Controller
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- HDMI CEC Controller
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- 24 capacitive sensing channels for touchkey, linear, and rotary touch sensors
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- Up to 87 fast I/Os: 68 I/Os with 5V tolerant capability and 19 with independent supply
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More information about STM32F072VB can be found here:
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- `STM32F072VB on www.st.com`_
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- `STM32F072 reference manual`_
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Supported Features
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==================
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The Zephyr stm32f072_eval board configuration supports the following hardware 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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| PWM | on-chip | pwm |
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+-----------+------------+-------------------------------------+
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| CLOCK | on-chip | reset and clock control |
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+-----------+------------+-------------------------------------+
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| IWDG | on-chip | independent watchdog |
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+-----------+------------+-------------------------------------+
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Other hardware features are not yet supported on this Zephyr porting.
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The default configuration can be found in the defconfig file:
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``boards/arm/stm32f072_eval/stm32f072_eval_defconfig``
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Pin Mapping
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===========
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STM32F072-EVAL Discovery kit has 6 GPIO controllers. These controllers are responsible for pin muxing,
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input/output, pull-up, etc.
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For mode details please refer to `STM32F072-EVAL board User Manual`_.
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Default Zephyr Peripheral Mapping:
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----------------------------------
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- UART_2_TX : PD5
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- UART_2_RX : PD6
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- TAMPER_PB : PC13
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- JOYSTICK_RIGHT_PB : PE3
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- JOYSTICK_LEFT_PB : PF2
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- JOYSTICK_UP_PB : PF9
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- JOYSTICK_DOWN_PB : PF10
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- JOYSTICK_SEL_PB : PA0
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- LD1 : PD8
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- LD2 : PD9
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- LD3 : PD10
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- LD4 : PD11
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System Clock
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============
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STM32F072-EVAL System Clock could be driven by an internal or external oscillator,
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as well as the main PLL clock. By default the System clock is driven by the PLL clock at 48MHz,
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driven by an 8MHz high speed internal clock.
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Serial Port
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===========
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STM32F072-EVAL Discovery kit has up to 4 UARTs. The Zephyr console output is assigned to UART2.
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Default settings are 115200 8N1.
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Programming and Debugging
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*************************
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Applications for the ``stm32f072_eval`` 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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STM32F072-EVAL Discovery kit includes an ST-LINK/V2 embedded debug tool interface.
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This interface is supported by the openocd version included in Zephyr SDK.
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Flashing an application to STM32F072-EVAL
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-------------------------------------------
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Here is an example for the :ref:`blinky-sample` application.
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.. zephyr-app-commands::
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:zephyr-app: samples/basic/blinky
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:board: stm32f072_eval
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:goals: build flash
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You will see the LED blinking every second.
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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:`blinky-sample` application.
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.. zephyr-app-commands::
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:zephyr-app: samples/basic/blinky
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:board: stm32f072_eval
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:maybe-skip-config:
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:goals: debug
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.. _STM32F072-EVAL website:
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http://www.st.com/en/evaluation-tools/stm32072b-eval.html
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.. _STM32F072-EVAL board User Manual:
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http://www.st.com/resource/en/user_manual/dm00104135.pdf
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.. _STM32F072VB on www.st.com:
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http://www.st.com/en/microcontrollers/stm32f072vb.html
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.. _STM32F072 reference manual:
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http://www.st.com/resource/en/reference_manual/dm00031936.pdf

‎boards/arm/stm32f072_eval/dts.fixup

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/* This file is a temporary workaround for mapping of the generated information
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* to the current driver definitions. This will be removed when the drivers
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* are modified to handle the generated information, or the mapping of
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* generated data matches the driver definitions.
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*/
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#define CONFIG_NUM_IRQ_PRIO_BITS ARM_V6M_NVIC_E000E100_ARM_NUM_IRQ_PRIORITY_BITS
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#define CONFIG_UART_STM32_PORT_2_BASE_ADDRESS ST_STM32_USART_40004400_BASE_ADDRESS
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#define CONFIG_UART_STM32_PORT_2_BAUD_RATE ST_STM32_USART_40004400_CURRENT_SPEED
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#define CONFIG_UART_STM32_PORT_2_IRQ_PRI ST_STM32_USART_40004400_IRQ_0_PRIORITY
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#define CONFIG_UART_STM32_PORT_2_NAME ST_STM32_USART_40004400_LABEL
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#define PORT_2_IRQ ST_STM32_USART_40004400_IRQ_0

‎boards/arm/stm32f072_eval/pinmux.c

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/*
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* Copyright (c) 2017 BayLibre, SAS
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <kernel.h>
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#include <device.h>
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#include <init.h>
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#include <pinmux.h>
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#include <sys_io.h>
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#include "pinmux/stm32/pinmux_stm32.h"
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/* pin assignments for STM32F072-EVAL board */
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static const struct pin_config pinconf[] = {
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#ifdef CONFIG_UART_STM32_PORT_2
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{STM32_PIN_PD5, STM32F0_PINMUX_FUNC_PD5_USART2_TX},
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{STM32_PIN_PD6, STM32F0_PINMUX_FUNC_PD6_USART2_RX},
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#endif /* CONFIG_UART_STM32_PORT_2 */
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};
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static int pinmux_stm32_init(struct device *port)
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{
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ARG_UNUSED(port);
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stm32_setup_pins(pinconf, ARRAY_SIZE(pinconf));
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return 0;
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}
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SYS_INIT(pinmux_stm32_init, PRE_KERNEL_1,
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CONFIG_PINMUX_STM32_DEVICE_INITIALIZATION_PRIORITY);

‎boards/arm/stm32f072_eval/stm32f072_eval.dts

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/*
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* Copyright (c) 2017 BayLibre, SAS
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/dts-v1/;
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#include <st/stm32f072.dtsi>
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/ {
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model = "STMicroelectronics STM32F072-EVAL board";
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compatible = "st,stm32f072-eval", "st,stm32f072";
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chosen {
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zephyr,console = &usart2;
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zephyr,sram = &sram0;
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zephyr,flash = &flash0;
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};
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};
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&usart2 {
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current-speed = <115200>;
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pinctrl-0 = <&usart2_pins_d>;
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pinctrl-names = "default";
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status = "ok";
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};

‎boards/arm/stm32f072_eval/stm32f072_eval.yaml

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identifier: stm32f072_eval
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name: STM32F072-EVAL
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type: mcu
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arch: arm
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toolchain:
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- zephyr
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- gccarmemb
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ram: 16
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flash: 128
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testing:
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ignore_tags:
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- net

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