Configure STM32WB55RG for Mbed CLI2

[kvkc97]

Hi,
I am using Mbed CLI2 to add a custom target STM32WB55RGV6. My system is Windows10 and I am using latest Mbed version. Since Mbed CLI2 supports boards K64F, DISCO_L475VG_IOT01A and NRF52840_DK only, I tried to add a custom target for my requirement following the given link.
https://os.mbed.com/docs/mbed-os/v6.6/program-setup/adding-and-configuring-targets.html
When I tried to configure the new target, error is obtained that 'Attributes are not found'. Is this the right step to be followed or is there some other steps to be followed?
Also since the version of Mbed CLI2 is beta, is there any other option to add a custom board?

Thanks & Regards
Keerthi

[ladislas]

@kvkc97 custom targets are not yet supported (see #129) but a PR is on its way to add support (see #160)

[kvkc97]

I have tried the above mentioned method but it generates the same error.

[0xc0170]

I have tried the above mentioned method but it generates the same error.

Can you describe what have you tried (also did you fetch pr #160 ?) ? The detailed report will help PR 160 to proceed.

[kvkc97]

I followed pr #160 and added add_subdirectory() in the application level CMakeLists.txt. This generates the same error that is "Target attributes are not found"

[rwalton-arm]

Hi @kvkc97 could you post your custom_targets.json? It's a possibility that the docs are incorrect, or I've messed something up as I've only tried it with one example so far.

[kvkc97]

I have added the custom_targets.json file.

[rwalton-arm]

It looks like you haven't named your target from the screenshot. The key in the outer dictionary should be the target name, e.g

{
"MYTARGET": {
        "inherits": ["Target"]
...

You then need to pass the name to the build command e.g

mbedtools build -m MYTARGET -t GCC_ARM

[kvkc97]

I have added the target name in custom_targets.json file. Since build command is not available in mbed-tools, i used configure command as follows.
mbed-tools configure -m MYTARGET -t GCC_ARM
It generated the same error, that is "Target attributes for MYTARGET not found."

[rwalton-arm]

I have added the target name in custom_targets.json file. Since build command is not available in mbed-tools, i used configure command as follows.
mbed-tools configure -m MYTARGET -t GCC_ARM
It generated the same error, that is "Target attributes for MYTARGET not found."

Which version of mbed-tools are you using? We've had a build command available for a while now.

EDIT: Sorry it's mbed-tools compile ... - I forgot we changed the name again.

[kvkc97]

I have used both compile and configure commands but both generate error. I have attached the screenshot of the same.

[rwalton-arm]

I have used both compile and configure commands but both generate error. I have attached the screenshot of the same.

OK. I'll take a look. Could you post a text copy/paste of your custom_targets.json so I can try it here? It's time consuming to recreate it from a .png. Also do you have custom_targets.json in the root of your project when you run the command? Thanks.

[kvkc97]

I have attached the custom_targets.json file below. And the file is saved in the root folder along with main.cpp and other library files.

{
"MYTARGET": {
"inherits": ["Target"],
"core": "Cortex-M4F",
"public": false,
"macros": ["USE_HAL_DRIVER", "USE_FULL_LL_DRIVER", "TRANSACTION_QUEUE_SIZE_SPI=2", "MBED_TICKLESS", "EXTRA_IDLE_STACK_REQUIRED", "STM32WB55xx",
"MBEDTLS_CONFIG_HW_SUPPORT"],
"extra_labels": ["STM", "STM32WB", "CORDIO", "STM32WB55xx"],
"features": ["BLE"],
"config": {
"lse_available": {
"help": "Define if a Low Speed External xtal (LSE) is available on the board (0 = No, 1 = Yes). If Yes, the LSE will be used to clock the RTC, LPUART, ... otherwise the Low Speed Internal clock (LSI) will be used",
"value": "1"
},
"lpuart_clock_source": {
"help": "Define the LPUART clock source. Mask values: USE_LPUART_CLK_LSE, USE_LPUART_CLK_PCLK1, USE_LPUART_CLK_HSI",
"value": "USE_LPUART_CLK_LSE|USE_LPUART_CLK_PCLK1"
},
"stdio_uart_tx": {
"help": "default TX STDIO pins is defined in PinNames.h file, but it can be overridden"
},
"stdio_uart_rx": {
"help": "default RX STDIO pins is defined in PinNames.h file, but it can be overridden"
},
"lpticker_delay_ticks": {
"help": "https://os.mbed.com/docs/latest/porting/low-power-ticker.html",
"value": 1,
"macro_name": "LPTICKER_DELAY_TICKS"
},
"lpticker_lptim_clock": {
"help": "Default value for LPTIM clock (lpticker_lptim == 1). Value is the dividing factor. Choose 1, 2 or 4",
"value": 1
},
"lpticker_lptim": {
"help": "This target supports LPTIM. Set value 1 to use LPTIM for LPTICKER, or 0 to use RTC wakeup timer",
"value": 1
},
"lse_drive_load_level": {
"help": "HSE drive load level RCC_LSEDRIVE_LOW | RCC_LSEDRIVE_MEDIUMLOW | RCC_LSEDRIVE_MEDIUMHIGH | RCC_LSEDRIVE_HIGH",
"value": "RCC_LSEDRIVE_LOW"
}
},
"overrides": {
"deep-sleep-latency": 4,
"init-us-ticker-at-boot": true,
"lpticker_delay_ticks": 0
},
"device_has": ["USTICKER", "LPTICKER", "RTC", "ANALOGIN", "I2C", "I2CSLAVE", "I2C_ASYNCH", "INTERRUPTIN", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT",
"SERIAL", "SERIAL_FC", "SLEEP", "SPI", "SPISLAVE", "SPI_ASYNCH", "STDIO_MESSAGES", "WATCHDOG", "RESET_REASON", "CRC", "FLASH", "MPU",
"SERIAL_ASYNCH", "TRNG", "USBDEVICE"],
"supported_toolchains": ["ARM", "IAR", "GCC_ARM"],
"device_name": "STM32WB55RGVx",
"OUTPUT_EXT": "bin",
"supported_c_libs": {
"arm": ["std", "small"],
"gcc_arm": ["std", "small"],
"iar": ["std"]
},
"bootloader_supported": true,
"supported_form_factors": ["ARDUINO", "MORPHO"],
"supported_application_profiles": ["full", "bare-metal"],
}
}

[rwalton-arm]

Thanks. Your target is marked public: false so the targets.json parser ignores it. If you set public: true it should find the target attributes. I'm still getting another error from CMake to do with include directories, but that could be just my test env as I didn't add any source files for the custom target. Could you give it another try with public: true and let me know what happens? Thanks.

[kvkc97]

Thanks. I edited custom target file to public:true but same error is generated.

[rwalton-arm]

Interesting. The error I'm seeing now is:

mbedtools --traceback compile -t GCC_ARM -m MYTARGET -c
Configuring project and generating build system...
-- The C compiler identification is GNU 9.2.1
-- The CXX compiler identification is GNU 9.2.1
-- The ASM compiler identification is GNU
-- Found assembler: /usr/local/bin/arm-none-eabi-gcc
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/local/bin/arm-none-eabi-gcc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/local/bin/arm-none-eabi-g++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
CMake Error at mbed-os/connectivity/drivers/mbedtls/TARGET_STM/TARGET_STM32WB55xx/CMakeLists.txt:4 (target_include_directories):
  Cannot specify include directories for target "mbed-mbedtls-stm" which is
  not built by this project.

...
mbed_tools.build.exceptions.MbedBuildError: CMake invocation failed!

Oh, I also had to remove the trailing comma on this line: "supported_application_profiles": ["full", "bare-metal"], as it complained the file was invalid JSON with the trailing comma. But I'd expect you to see a different error if that was the case. Can you run mbedtools --traceback compile ... and post the output here? Thanks.