ST Nucleo F091RC
Overview
The STM32 Nucleo-64 development board with STM32F091RC MCU, supports Arduino and ST morpho connectivity.
The STM32 Nucleo board provides an affordable, and flexible way for users to try out new concepts, and build prototypes with the STM32 microcontroller, choosing from the various combinations of performance, power consumption, and features.
The Arduino* Uno V3 connectivity support and the ST morpho headers allow easy functionality expansion of the STM32 Nucleo open development platform with a wide choice of specialized shields.
The STM32 Nucleo board integrates the ST-LINK/V2-1 debugger and programmer.
The STM32 Nucleo board comes with the STM32 comprehensive software HAL library together with various packaged software examples.
More information about the board can be found at the Nucleo F091RC website 1.
Hardware
Nucleo F091RC provides the following hardware components:
STM32 microcontroller in QFP64 package
Two types of extension resources:
Arduino* Uno V3 connectivity
ST morpho extension pin headers for full access to all STM32 I/Os
ARM* mbed*
On-board ST-LINK/V2-1 debugger/programmer with SWD connector:
Selection-mode switch to use the kit as a standalone ST-LINK/V2-1
Flexible board power supply:
USB VBUS or external source (3.3V, 5V, 7 - 12V)
Power management access point
Three LEDs:
USB communication (LD1), user LED (LD2), power LED (LD3)
Two push-buttons: USER and RESET
USB re-enumeration capability. Three different interfaces supported on USB:
Virtual COM port
Mass storage
Debug port
Support of wide choice of Integrated Development Environments (IDEs) including:
IAR
ARM Keil
GCC-based IDEs
More information about STM32F091RC can be found in the STM32F091 reference manual 2
Supported Features
The Zephyr nucleo_f091rc board configuration supports the following hardware features:
Interface |
Controller |
Driver/Component |
|---|---|---|
NVIC |
on-chip |
nested vector interrupt controller |
UART |
on-chip |
serial port-polling; serial port-interrupt |
PINMUX |
on-chip |
pinmux |
GPIO |
on-chip |
gpio |
CLOCK |
on-chip |
reset and clock control |
FLASH |
on-chip |
flash memory |
WATCHDOG |
on-chip |
independent watchdog |
COUNTER |
on-chip |
rtc |
I2C |
on-chip |
i2c controller |
SPI |
on-chip |
SPI controller |
ADC |
on-chip |
ADC controller |
DAC |
on-chip |
DAC controller |
DMA |
on-chip |
Direct Memory Access |
Other hardware features are not yet supported in this Zephyr port.
The default configuration can be found in the defconfig file:
boards/arm/nucleo_f091rc/nucleo_f091rc_defconfig
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.
Board connectors:
Default Zephyr Peripheral Mapping:
UART_1 TX/RX : PB6/PB7
UART_2 TX/RX : PA2/PA3 (ST-Link Virtual COM Port)
I2C1 SCL/SDA : PB8/PB9 (Arduino I2C)
I2C2 SCL/SDA : PA11/PA12
SPI1 SCK/MISO/MOSI : PA5/PA6/PA7 (Arduino SPI)
SPI2 SCK/MISO/MOSI : PB13/PB14/PB15
USER_PB : PC13
LD1 : PA5
DAC_OUT1 : PA4
For mode details please refer to STM32 Nucleo-64 board User Manual 3.
Programming and Debugging
Applications for the nucleo_f091rc board configuration can be built and
flashed in the usual way (see Building an Application and
Run an Application for more details).
Flashing
Nucleo F091RC 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 F091RC
Here is an example for the Blinky application.
# From the root of the zephyr repository
west build -b nucleo_f091rc samples/basic/blinky
west flash
You will see the LED blinking every second.
Debugging
You can debug an application in the usual way. Here is an example for the Hello World application.
# From the root of the zephyr repository
west build -b nucleo_f091rc samples/hello_world
west debug