STM32G081B Evaluation
Overview
The STM32G081B-EVAL Evaluation board is a high-end development platform, for Arm Cortex-M0+ core-based STM32G081RBT6 microcontroller, with USB Type-C and power delivery controller interfaces (UCPD), compliant with USB type-C r1.2 and USB PD specification r3.0, two I2Cs, two SPIs, five USARTs, one LP UART, one 12-bit ADC, two 12-bit DACs, two GP comparators, two LP timers, internal 32 KB SRAM and 128 KB Flash, CEC, SWD debugging support. The full range of hardware features on the STM32G081B-EVAL Evaluation board includes a mother board, a legacy peripheral daughterboard and a USB-C and Power Delivery daughterboard, which help to evaluate all peripherals (USB Type-C connector with USB PD, motor control connector, RS232, RS485, Audio DAC, microphone ADC, TFT LCD, IrDA, IR LED, IR receiver, LDR, MicroSD card, CEC on two HDMI connectors, smart card slot, RF E2PROM & Temperature sensor…), and to develop applications.
The board integrates an ST-LINK/V2-1 as an embedded in-circuit debugger and programmer for the STM32 MCU. The daughterboard and extension connectors provide an easy way to connect a daughterboard or wrapping board for the user’s specific applications.
The USB-C and Power Delivery daughterboard features two independent USB-C ports controlled by an STM32G0. USB-C port 1 is dual role power (DRP) and can provide up-to 45 W. USB-C Port 2 is sink only. Both support USB PD protocol and alternate mode functionality.
Application firmware examples are provided to evaluate the USB-C technology through various use cases.
- Mother board
STM32G081RBT6 microcontroller with 128 Kbytes of Flash memory and 32 Kbytes of RAM in LQFP64 package
MCU voltage choice fixed 3.3 V or adjustable from 1.65 V to 3.6 V
I2C compatible serial interface
RTC with backup battery
8-Gbyte or more SPI interface microSD card
Potentiometer
4 color user LEDs and one LED as MCU low-power alarm
Reset, Tamper and User buttons
4-direction control and selection joystick
- Board connectors:
5 V power jack
RS-232 and RS485 communications
Stereo audio jack including analog microphone input
microSD card
Extension I2C connector
Motor-control connector
- Board extension connectors:
Daughterboard connectors for legacy peripheral daughter board or USB-C daughterboard
Extension connectors for daughterboard or wire-wrap board
- Flexible power-supply options:
5 V power jack
ST-LINK/V2-1 USB connector
Daughterboard
On-board ST-LINK/V2-1 debugger/programmer with USB re-enumeration capability: mass storage, virtual COM port and debug port
- Legacy peripheral daughterboard
IrDA transceiver
IR LED and IR receiver
Light dependent resistor (LDR)
Temperature Sensor
- Board connectors:
Two HDMI connectors with DDC and CEC
Smart card slot
- USB-C and Power Delivery daughterboard
Mux for USB3.1 Gen1 / DisplayPort input and Type-C port1 output
Mux for Type-C port2 input and DisplayPort output / USB2.0
VCONN on Type-C port1
USB PD on Type-C port1
- Board connectors:
Type-C port1 DRP (dual-role port)
Type-C port2 Sink
DisplayPort input
DisplayPort output
USB 3.1 Gen1 Type-B receptacle
USB2.0 Type-A receptacle
19 V power jack for USB PD
More information about the board can be found at the STM32G081B-EVAL website [1].
More information about STM32G081RB can be found here:
Supported Features
The stm32g081b_eval board supports the hardware features listed below.
- on-chip / on-board
- Feature integrated in the SoC / present on the board.
- 2 / 2
-
Number of instances that are enabled / disabled.
Click on the label to see the first instance of this feature in the board/SoC DTS files. -
vnd,foo -
Compatible string for the Devicetree binding matching the feature.
Click on the link to view the binding documentation.
Type |
Location |
Description |
Compatible |
|---|---|---|---|
CPU |
on-chip |
ARM Cortex-M0+ CPU1 |
|
ADC |
on-chip |
STM32 ADC1 |
|
Clock control |
on-chip |
STM32F0/G0 RCC (Reset and Clock controller)1 |
|
on-chip |
STM32 HSE Clock1 |
||
on-chip |
STM32G0 HSI Clock1 |
||
on-chip |
STM32 LSE Clock1 |
||
on-chip |
Generic fixed-rate clock provider1 |
||
on-chip |
STM32G0 main PLL1 |
||
Counter |
on-chip |
STM32 counters8 |
|
Cryptographic accelerator |
on-chip |
STM32 AES Accelerator1 |
|
DAC |
on-chip |
STM32 family DAC1 |
|
DMA |
on-chip |
STM32 DMA controller (V2)1 |
|
on-chip |
STM32 DMAMUX controller1 |
||
Flash controller |
on-chip |
STM32 Family flash controller1 |
|
GPIO & Headers |
on-chip |
STM32 GPIO Controller5 |
|
I2C |
on-chip |
STM32 I2C V2 controller2 |
|
Input |
on-board |
Group of GPIO-bound input keys1 |
|
Interrupt controller |
on-chip |
ARMv6-M NVIC (Nested Vectored Interrupt Controller) controller1 |
|
on-chip |
STM32G0 External Interrupt Controller1 |
||
LED |
on-board |
Group of GPIO-controlled LEDs1 |
|
Memory controller |
on-chip |
STM32 Battery Backed RAM1 |
|
MTD |
on-chip |
STM32 flash memory1 |
|
Pin control |
on-chip |
STM32 Pin controller1 |
|
PWM |
on-chip |
||
Reset controller |
on-chip |
STM32 Reset and Clock Control (RCC) Controller1 |
|
RNG |
on-chip |
STM32 Random Number Generator1 |
|
RTC |
on-chip |
STM32 RTC1 |
|
Sensors |
on-chip |
STM32 family TEMP node for production calibrated sensors with two calibration temperatures1 |
|
on-chip |
STM32 VREF+1 |
||
on-chip |
STM32 VBAT1 |
||
Serial controller |
on-chip |
||
on-chip |
STM32 LPUART1 |
||
SMbus |
on-chip |
STM32 SMBus controller2 |
|
SPI |
on-chip |
STM32 SPI controller with embedded Rx and Tx FIFOs2 |
|
SRAM |
on-chip |
Generic on-chip SRAM description1 |
|
USB Type-C Port Controller |
on-chip |
STM32 USB Type-C / Power Delivery2 |
|
Timer |
on-chip |
ARMv6-M System Tick1 |
|
on-chip |
STM32 low-power timer (LPTIM)1 |
||
on-chip |
|||
Watchdog |
on-chip |
STM32 watchdog1 |
|
on-chip |
STM32 system window watchdog1 |
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.
Default Zephyr Peripheral Mapping:
UART_3 TX/RX : PC10/PC11 (ST-Link Virtual Port Com)
UCPD2 : PD0/PD2
BUTTON (JOY_SEL) : PA0
BUTTON (JOY_LEFT) : PC8
BUTTON (JOY_DOWN) : PC3
BUTTON (JOY_RIGHT) : PC7
BUTTON (JOY_UP) : PC2
VBUS DISCHARGE : PB14
LED1 : PD5
LED2 : PD6
LED3 : PD8
LED4 : PD9
For more details please refer to STM32G0 Evaluation board User Manual [3].
Programming and Debugging
The STM32G081B Evaluation board includes an ST-LINK/V2-1 embedded debug tool interface.
Applications for the stm32g081b_eval board configuration can be built and
flashed in the usual way (see Building an Application and
Run an Application for more details).
Flashing
The board is configured to be flashed using west STM32CubeProgrammer [5] runner, so its installation is required.
$ west flash
Flashing an application to the STM32G081B_EVAL
Here is an example for the Blinky application.
# From the root of the zephyr repository
west build -b stm32g081b_eval 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 stm32g081b_eval samples/hello_world
west debug