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feat: Blues Heron (STM32U575CIT6) #2873

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1 change: 1 addition & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -874,6 +874,7 @@ User can add a STM32 based board following this [wiki](https://github.com/stm32d
| :----: | :-------: | ---- | :-----: | :---- |
| :green_heart: | STM32L4R5ZIYx | [Swan R5](https://blues.com/products/swan) | *2.1.0* | |
| :green_heart: | STM32L433CC | [Cygnet](https://blues.com/products) | *2.8.0* | |
| :yellow_heart: | STM32U575CITx | [Heron](https://blues.com/products) | *2.12.0* | |
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@fpistm fpistm Dec 9, 2025

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Suggested change
| :yellow_heart: | STM32U575CITx | [Heron](https://blues.com/products) | *2.12.0* | |
| :yellow_heart: | STM32U575CITx | [Heron](https://blues.com/products) | **2.12.0** | |


### [Elecgator](https://www.elecgator.com/) boards

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67 changes: 42 additions & 25 deletions boards.txt
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Expand Up @@ -14254,41 +14254,58 @@ Blues.menu.pnum.CYGNET.pid.0=0x0003
Blues.menu.pnum.CYGNET.openocd.target=stm32l4x
Blues.menu.pnum.CYGNET.debug.svd_file={runtime.tools.STM32_SVD.path}/svd/STM32L4xx/STM32L433.svd

# Heron board
Blues.menu.pnum.HERON=Heron
Blues.menu.pnum.HERON.upload.maximum_size=2097152
Blues.menu.pnum.HERON.upload.maximum_data_size=786432
Blues.menu.pnum.HERON.build.mcu=cortex-m33
Blues.menu.pnum.HERON.build.fpu=-mfpu=fpv5-sp-d16
Blues.menu.pnum.HERON.build.float-abi=-mfloat-abi=hard
Blues.menu.pnum.HERON.build.board=HERON
Blues.menu.pnum.HERON.build.series=STM32U5xx
Blues.menu.pnum.HERON.build.product_line=STM32U575xx
Blues.menu.pnum.HERON.build.variant=STM32U5xx/U575C(G-I)(T-U)_U585CI(T-U)
Blues.menu.pnum.HERON.build.peripheral_pins=-DCUSTOM_PERIPHERAL_PINS
Blues.menu.pnum.HERON.vid.0=0x30A4
Blues.menu.pnum.HERON.pid.0=0x0004
Blues.menu.pnum.HERON.openocd.target=stm32u5x
Blues.menu.pnum.HERON.debug.svd_file={runtime.tools.STM32_SVD.path}/svd/STM32U5xx/STM32U575.svd

# Upload menu
Blues.menu.upload_method.OpenOCDSTLink=OpenOCD STLink (SWD)
Blues.menu.upload_method.OpenOCDSTLink.upload.protocol=stlink
Blues.menu.upload_method.OpenOCDSTLink.upload.tool=openocd_upload

Blues.menu.upload_method.OpenOCDDapLink=OpenOCD DapLink (SWD)
Blues.menu.upload_method.OpenOCDDapLink.upload.protocol=cmsis-dap
Blues.menu.upload_method.OpenOCDDapLink.upload.tool=openocd_upload
Blues.menu.upload_method.OpenOCDDapLink.debug.server.openocd.scripts.0=interface/cmsis-dap.cfg
Blues.menu.upload_method.OpenOCDDapLink.debug.server.openocd.scripts.1={runtime.platform.path}/debugger/select_swd.cfg

Blues.menu.upload_method.swdMethod=STM32CubeProgrammer (SWD)
Blues.menu.upload_method.swdMethod.upload.protocol=swd
Blues.menu.upload_method.swdMethod.upload.options=-a {upload.address} -m {upload.mode} -s {upload.start}
Blues.menu.upload_method.swdMethod.upload.tool=stm32CubeProg

Blues.menu.upload_method.jlinkMethod=STM32CubeProgrammer (J-Link)
Blues.menu.upload_method.jlinkMethod.upload.protocol=jlink
Blues.menu.upload_method.jlinkMethod.upload.options=-a {upload.address} -s {upload.start}
Blues.menu.upload_method.jlinkMethod.upload.tool=stm32CubeProg
Blues.menu.upload_method.dfuMethod=STM32CubeProgrammer (DFU)
Blues.menu.upload_method.dfuMethod.upload.protocol=dfu
Blues.menu.upload_method.dfuMethod.upload.options=-v {upload.vid} -p {upload.pid} -a {upload.address} -s {upload.start}
Blues.menu.upload_method.dfuMethod.upload.tool=stm32CubeProg

Blues.menu.upload_method.serialMethod=STM32CubeProgrammer (Serial)
Blues.menu.upload_method.serialMethod.upload.protocol=serial
Blues.menu.upload_method.serialMethod.upload.options=-c {serial.port.file} -a {upload.address} -s {upload.start} --parity {upload.parity}
Blues.menu.upload_method.serialMethod.upload.tool=stm32CubeProg

Blues.menu.upload_method.dfuMethod=STM32CubeProgrammer (DFU)
Blues.menu.upload_method.dfuMethod.upload.protocol=dfu
Blues.menu.upload_method.dfuMethod.upload.options=-v {upload.vid} -p {upload.pid} -a {upload.address} -s {upload.start}
Blues.menu.upload_method.dfuMethod.upload.tool=stm32CubeProg
Blues.menu.upload_method.jlinkMethod=STM32CubeProgrammer (J-Link)
Blues.menu.upload_method.jlinkMethod.upload.protocol=jlink
Blues.menu.upload_method.jlinkMethod.upload.options=-a {upload.address} -s {upload.start}
Blues.menu.upload_method.jlinkMethod.upload.tool=stm32CubeProg

Blues.menu.upload_method.bmpMethod=BMP (Black Magic Probe)
Blues.menu.upload_method.bmpMethod.upload.protocol=gdb_bmp
Blues.menu.upload_method.bmpMethod.upload.tool=bmp_upload

Blues.menu.upload_method.OpenOCDSTLink=OpenOCD STLink (SWD)
Blues.menu.upload_method.OpenOCDSTLink.upload.protocol=stlink
Blues.menu.upload_method.OpenOCDSTLink.upload.tool=openocd_upload

Blues.menu.upload_method.OpenOCDDapLink=OpenOCD DapLink (SWD)
Blues.menu.upload_method.OpenOCDDapLink.upload.protocol=cmsis-dap
Blues.menu.upload_method.OpenOCDDapLink.upload.tool=openocd_upload
Blues.menu.upload_method.OpenOCDDapLink.debug.server.openocd.scripts.0=interface/cmsis-dap.cfg
Blues.menu.upload_method.OpenOCDDapLink.debug.server.openocd.scripts.1={runtime.platform.path}/debugger/select_swd.cfg

################################################################################
# Elecgator boards

Expand Down Expand Up @@ -16365,9 +16382,13 @@ GenWL.menu.opt.o0std.build.flags.optimize=-O0
3dprinter.menu.opt.o0std=No Optimization (-O0)
3dprinter.menu.opt.o0std.build.flags.optimize=-O0

Blues.menu.opt.ogstd=Debug (-Og)
Blues.menu.opt.ogstd.build.flags.optimize=-Og
Blues.menu.opt.osstd=Smallest (-Os default)
Blues.menu.opt.oslto=Smallest (-Os) with LTO
Blues.menu.opt.oslto.build.flags.optimize=-Os -flto
Blues.menu.opt.o0std=No Optimization (-O0)
Blues.menu.opt.o0std.build.flags.optimize=-O0
Blues.menu.opt.o1std=Fast (-O1)
Blues.menu.opt.o1std.build.flags.optimize=-O1
Blues.menu.opt.o1lto=Fast (-O1) with LTO
Expand All @@ -16380,10 +16401,6 @@ Blues.menu.opt.o3std=Fastest (-O3)
Blues.menu.opt.o3std.build.flags.optimize=-O3
Blues.menu.opt.o3lto=Fastest (-O3) with LTO
Blues.menu.opt.o3lto.build.flags.optimize=-O3 -flto
Blues.menu.opt.ogstd=Debug (-Og)
Blues.menu.opt.ogstd.build.flags.optimize=-Og
Blues.menu.opt.o0std=No Optimization (-O0)
Blues.menu.opt.o0std.build.flags.optimize=-O0

Elecgator.menu.opt.osstd=Smallest (-Os default)
Elecgator.menu.opt.oslto=Smallest (-Os) with LTO
Expand Down Expand Up @@ -16822,13 +16839,13 @@ GenWL.menu.dbg.enable_all.build.flags.debug=-g
3dprinter.menu.dbg.enable_all=Core Logs and Symbols Enabled (-g)
3dprinter.menu.dbg.enable_all.build.flags.debug=-g

Blues.menu.dbg.none=None
Blues.menu.dbg.enable_all=Core Logs and Symbols Enabled (-g)
Blues.menu.dbg.enable_all.build.flags.debug=-g
Blues.menu.dbg.enable_sym=Symbols Enabled (-g)
Blues.menu.dbg.enable_sym.build.flags.debug=-g -DNDEBUG
Blues.menu.dbg.enable_log=Core logs Enabled
Blues.menu.dbg.enable_log.build.flags.debug=
Blues.menu.dbg.enable_all=Core Logs and Symbols Enabled (-g)
Blues.menu.dbg.enable_all.build.flags.debug=-g
Blues.menu.dbg.none=None
Comment on lines +16842 to +16848
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@fpistm fpistm Dec 9, 2025

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I don't recommend to change this order.
If you need to debug, the correct way is to enable the "Optimize for debugging" in the Arduino IDE menu. Then debug and symbol is activated.
Else this mean by default binary is more fat.

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@zfields zfields Dec 12, 2025

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In my mind, you want to start a project with debug symbols, then once you have hardened your implementation, you will either optimize for size or speed.

This follows the precedent of adding -DNDEBUG to your compilation, only after you are happy with what you've built and you are ready to release a production build.

This will also allow our users to simply press the debug button and start debugging without having to "learn" how to set it up.

That being said, if this is a STM32duino experience faux pas, and you are not asking, but telling me to change it, then I will change it, no problem.

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@fpistm fpistm Dec 12, 2025

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Only a advice. in a general case Arduino users do not debug and assume the binary is in release mode.
Anyway, that's fine for me as it only concerns Blues menu.
So keep it like this.


Elecgator.menu.dbg.none=None
Elecgator.menu.dbg.enable_sym=Symbols Enabled (-g)
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85 changes: 85 additions & 0 deletions cmake/boards_db.cmake
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Expand Up @@ -109054,6 +109054,91 @@ target_compile_options(GENERIC_WLE5JCIX_serial_none INTERFACE
"SHELL:-DHAL_UART_MODULE_ENABLED -DHWSERIAL_NONE"
)

# HERON
# -----------------------------------------------------------------------------

set(HERON_VARIANT_PATH "${CMAKE_CURRENT_LIST_DIR}/../variants/STM32U5xx/U575C(G-I)(T-U)_U585CI(T-U)")
set(HERON_MAXSIZE 2097152)
set(HERON_MAXDATASIZE 786432)
set(HERON_MCU cortex-m33)
set(HERON_FPU_CONF "fpv5-sp-d16")
set(HERON_FPU_ABI "hard")
set(HERON_FPCONF "${HERON_FPU_CONF}-${HERON_FPU_ABI}")
set(HERON_PID 0x0004)
add_library(HERON INTERFACE)
target_compile_options(HERON INTERFACE
"SHELL:-DSTM32U575xx"
"SHELL:-DCUSTOM_PERIPHERAL_PINS"
"SHELL:"
"SHELL:-mfpu=${HERON_FPU_CONF} -mfloat-abi=${HERON_FPU_ABI}"
-mcpu=${HERON_MCU}
)
target_compile_definitions(HERON INTERFACE
"STM32U5xx"
"ARDUINO_HERON"
"BOARD_NAME=\"HERON\""
"BOARD_ID=HERON"
"VARIANT_H=\"variant_HERON.h\""
)
target_include_directories(HERON INTERFACE
${CMAKE_CURRENT_LIST_DIR}/../system/STM32U5xx
${CMAKE_CURRENT_LIST_DIR}/../system/Drivers/STM32U5xx_HAL_Driver/Inc
${CMAKE_CURRENT_LIST_DIR}/../system/Drivers/STM32U5xx_HAL_Driver/Src
${CMAKE_CURRENT_LIST_DIR}/../system/Drivers/CMSIS/Device/ST/STM32U5xx/Include/
${CMAKE_CURRENT_LIST_DIR}/../system/Drivers/CMSIS/Device/ST/STM32U5xx/Source/Templates/gcc/
${HERON_VARIANT_PATH}
)

target_link_options(HERON INTERFACE
"LINKER:--default-script=${HERON_VARIANT_PATH}/ldscript.ld"
"LINKER:--defsym=LD_FLASH_OFFSET=0x0"
"LINKER:--defsym=LD_MAX_SIZE=${HERON_MAXSIZE}"
"LINKER:--defsym=LD_MAX_DATA_SIZE=${HERON_MAXDATASIZE}"
"SHELL:-mfpu=${HERON_FPU_CONF} -mfloat-abi=${HERON_FPU_ABI}"
-mcpu=${HERON_MCU}
)

add_library(HERON_serial_disabled INTERFACE)
target_compile_options(HERON_serial_disabled INTERFACE
"SHELL:"
)
add_library(HERON_serial_generic INTERFACE)
target_compile_options(HERON_serial_generic INTERFACE
"SHELL:-DHAL_UART_MODULE_ENABLED"
)
add_library(HERON_serial_none INTERFACE)
target_compile_options(HERON_serial_none INTERFACE
"SHELL:-DHAL_UART_MODULE_ENABLED -DHWSERIAL_NONE"
)
add_library(HERON_usb_CDC INTERFACE)
target_compile_options(HERON_usb_CDC INTERFACE
"SHELL:-DUSBCON -DUSBD_VID=0x30A4 -DUSBD_PID=${HERON_PID} -DHAL_PCD_MODULE_ENABLED -DUSBD_USE_CDC -DDISABLE_GENERIC_SERIALUSB"
)
add_library(HERON_usb_CDCgen INTERFACE)
target_compile_options(HERON_usb_CDCgen INTERFACE
"SHELL:-DUSBCON -DUSBD_VID=0x30A4 -DUSBD_PID=${HERON_PID} -DHAL_PCD_MODULE_ENABLED -DUSBD_USE_CDC"
)
add_library(HERON_usb_HID INTERFACE)
target_compile_options(HERON_usb_HID INTERFACE
"SHELL:-DUSBCON -DUSBD_VID=0x30A4 -DUSBD_PID=${HERON_PID} -DHAL_PCD_MODULE_ENABLED -DUSBD_USE_HID_COMPOSITE"
)
add_library(HERON_usb_none INTERFACE)
target_compile_options(HERON_usb_none INTERFACE
"SHELL:"
)
add_library(HERON_xusb_FS INTERFACE)
target_compile_options(HERON_xusb_FS INTERFACE
"SHELL:"
)
add_library(HERON_xusb_HS INTERFACE)
target_compile_options(HERON_xusb_HS INTERFACE
"SHELL:-DUSE_USB_HS"
)
add_library(HERON_xusb_HSFS INTERFACE)
target_compile_options(HERON_xusb_HSFS INTERFACE
"SHELL:-DUSE_USB_HS -DUSE_USB_HS_IN_FS"
)

# HY_TINYSTM103TB
# -----------------------------------------------------------------------------

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1 change: 1 addition & 0 deletions tools/platformio/boards_remap.json
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Expand Up @@ -33,6 +33,7 @@
"bw_swan_r5": "SWAN_R5",
"blues_swan_r5": "SWAN_R5",
"blues_cygnet": "CYGNET",
"blues_heron": "HERON",
"disco_b_g431b_esc1": "B_G431B_ESC1",
"disco_b_u585i_iot02a": "B_U585I_IOT02A",
"nucleo_wl55jc": "NUCLEO_WL55JC1"
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2 changes: 2 additions & 0 deletions variants/STM32U5xx/U575C(G-I)(T-U)_U585CI(T-U)/CMakeLists.txt
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Expand Up @@ -22,8 +22,10 @@ add_library(variant_bin STATIC EXCLUDE_FROM_ALL
generic_clock.c
PeripheralPins.c
PeripheralPins_DEVKIT_IOT_CONTINUUM.c
PeripheralPins_HERON.c
variant_DEVKIT_IOT_CONTINUUM.cpp
variant_generic.cpp
variant_HERON.cpp
)
target_link_libraries(variant_bin PUBLIC variant_usage)

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