ST Nucleo F767ZI

Overview

This is a set of Bridle’s extension to the original Zephyr upstream board ST Nucleo F767ZI with some adaptions and improvement on Kconfig and Devicetree level.

List of extensions

Kconfig

activate self powered USB explicitly and set the maximum of electrical current consumption to 0㎃:

ST Nucleo F767ZI

Kconfig.defconfig

config USB_SELF_POWERED
	default y
	depends on USB_DEVICE_STACK && BOARD_NUCLEO_F767ZI

config USB_MAX_POWER
	default 0 if BOARD_NUCLEO_F767ZI	# 0mA (self powered)
	depends on USB_DEVICE_STACK && BOARD_NUCLEO_F767ZI

change log level and startup delay only in case of use the native USB device port st,stm32-otgfs with CDC-ACM UART zephyr,cdc-acm-uart as Zephyr console:

ST Nucleo F767ZI

Kconfig.defconfig

# Workaround for not being able to have commas in macro arguments
DT_CHOSEN_Z_CONSOLE := zephyr,console
DT_COMPAT_Z_CDC_ACM_UART := zephyr,cdc-acm-uart
DT_COMPAT_STM32_USB := st,stm32-otgfs

# Macros to shorten Kconfig expressions
DT_CHOSEN_CONSOLE_NODE := $(dt_chosen_path,$(DT_CHOSEN_Z_CONSOLE))
DT_CHOSEN_CONSOLE_PARENT := $(dt_node_parent,$(DT_CHOSEN_CONSOLE_NODE))

if BOARD_NUCLEO_F767ZI && \
	$(dt_chosen_enabled,$(DT_CHOSEN_Z_CONSOLE)) && \
	$(dt_compat_on_bus,$(DT_COMPAT_Z_CDC_ACM_UART),usb) && \
	$(dt_node_has_compat,$(DT_CHOSEN_CONSOLE_PARENT),$(DT_COMPAT_STM32_USB))

# Logger cannot use itself to log
choice USB_CDC_ACM_LOG_LEVEL_CHOICE
	default USB_CDC_ACM_LOG_LEVEL_OFF
	depends on LOG
endchoice

# Set USB log level to error only
choice USB_DEVICE_LOG_LEVEL_CHOICE
	default USB_DEVICE_LOG_LEVEL_ERR
	depends on LOG
endchoice

# Wait 4000ms at startup for logging
config LOG_PROCESS_THREAD_STARTUP_DELAY_MS
	default 4000
	depends on LOG

# Wait 4000ms at startup for USB enumeration on host side
config BOOT_DELAY
	default 4000

endif # zephyr,cdc-acm-uart

Devicetree

set default entries for model and compatible of the boards:

ST Nucleo F767ZI

nucleo_f767zi.overlay

/ {
	model = "STMicroelectronics STM32F767ZI-NUCLEO board @ UART Concole";
	compatible = "st,stm32f767zi-nucleo", "st,stm32f767zi-nucleo-uartcons";
};