ST Nucleo WB55RG

This page file discusses the port of NuttX to the STMicroelectronics NUCLEO-WB55RG board. That board features the multi-protocol wireless and ultra-low-power STM32WB55RGV6 MCU with 1MiB of Flash and 256KiB of SRAM. A dedicated M0+ coprocessor is responsible for performing the real-time low layer operations via one of the available wireless stacks distributed as binaries in STM32CubeWB package.

Status

April 2022: The nucleo-wb55rg board minimal setup compiles successfully.

June 2022: All STM32WB chip family is defined, many of peripherals are supported - GPIO, EXTI, DMA, timers, flash, PWR, RTC, USART/LPUART, SPI, IPCC. SRAM2 heap allocation works. Builtin apps work and ostest passed.

July 2022: Added BLE support with mailbox IPC driver.

LEDs

The board has 3 user leds:

LED1 (Blue)      PB5
LED2 (Green)     PB0
LED3 (Red)       PB1

These LEDs are not used by the board port unless CONFIG_ARCH_LEDS is defined. In that case, the usage by the board port is defined in include/board.h and src/stm32_autoleds.c.

Buttons

The board has 3 user buttons:

SW1     PC4 (needs SB47 close)
SW2     PD0
SW3     PD1

Serial Consoles

The MCU’s USART1 is connected to the on-board ST-LINK/V2-1 and exposed as a Virtual COM Port over the same Micro-USB Type B connection used for programming/debugging.

Configurations

nsh:

Configures the NuttShell (nsh) located at examples/nsh. This configuration is focused on low level, command-line driver testing.

ble:

Besides the NuttShell this configuration also enables BLE support. It includes btsak application for testing BLE applications.

nimble:

Besides the NuttShell it includes nimble example application which uses NimBLE host stack.:

nsh> ifup bnep0
nsh> nimble