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STM32 Nucleo-WL55JC

Support for the STM32 Nucleo-W55JC. More...

Detailed Description

Support for the STM32 Nucleo-W55JC.


The Nucleo-W55JC is a board from ST's Nucleo family supporting ARM dual-core Cortex-M4/M0 STM ultra-low-power microcontroller with ultra-low-power LPWAN radio solution, 64KiB of RAM and 256KiB of Flash.


Family ARM Cortex-M4 / ARM Cortex-M0+ Dual core
Vendor ST Microelectronics
Flash 256KiB
Frequency up to 48MHz
FPU no
Timers 10 (2x watchdog, 1 SysTick, 6x 16-bit, 1x 32-bit [TIM2])
ADCs 1x 12-bit (12 channel )
UARTs 3 (two UARTs and one Low-Power UART)
SPIs 2
I2Cs 3
Vcc 1.8 V - 3.6V
Datasheet Datasheet
Reference Manual Reference Manual
Programming Manual 1 Reference Manual - M4
Programming Manual 2 Reference Manual - M0
Board Manual Board Manual
Board Schematic Board Schematic
Additional Reference Developing LoRaWAN Application

Flashing the device

Flashing the Board Using OpenOCD

The ST Nucleo-wl55jc board includes an on-board ST-LINK V2 programmer. The easiest way to program the board is to use OpenOCD. Once you have installed OpenOCD (look here for installation instructions), you can flash the board simply by typing

make BOARD=nucleo-wl55jc flash

and debug via GDB by simply typing

make BOARD=nucleo-wl55jc debug

Flashing the Board Using ST-LINK Removable Media

On-board ST-LINK programmer provides via composite USB device removable media. Copying the HEX file causes reprogramming of the board. This task could be performed manually; however, the cpy2remed (copy to removable media) PROGRAMMER script does this automatically. To program board in this manner, use the command:

make BOARD=nucleo-wl55jc PROGRAMMER=cpy2remed flash
This PROGRAMMER was tested using ST-LINK firmware 2.37.26. Firmware updates could be found on this STM webpage.

Supported Toolchains

For using the ST Nucleo-wl55jc board we strongly recommend the usage of the GNU Tools for ARM Embedded Processors toolchain.


file  arduino_iomap.h
 Mapping from MCU pins to Arduino pins.
file  board.h
 Pin definitions and board configuration options.
file  gpio_params.h
 Board specific configuration of direct mapped GPIOs.
file  periph_conf.h
 Peripheral MCU configuration for the nucleo-wl55jc board.