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STM32WL family

st.com STM32WL family page

This ST MCU family is dual-core : based on an Arm Cortex-M4 core and an Arm Cortex-M0+ core.

Only M4 core is currently used by mbed-os applications.

Supported boards

NUCLEO_WL55JC

st.com STM32WL5x MCU page

st.com NUCLEO page

mbed.com NUCLEO page

Total FLASH is 256KB
RAM: 64 KB

LoRa

MBED-OS support

Lora radio is enabled in default STM32WL configuration

baremetal support

Baremetal is supported.

mbed_app.json:

{
    "requires": ["bare-metal", "lora", "stm32wl-lora-driver"]
}

GPIO debug pins

2 pins can be configured to check RX and TX activity.

Example of mbed_app.json:

{
    "target_overrides": {
        "NUCLEO_WL55JC": {
            "stm32wl-lora-driver.debug_rx": "LED1",
            "stm32wl-lora-driver.debug_tx": "LED2"
        }
    }
}

mbed-os test

target	platform_name	test suite	result	elapsed_time (sec)	copy_method
NUCLEO_WL55JC-ARMC6	NUCLEO_WL55JC	connectivity-lorawan-tests-tests-lorawan-loraradio	OK	44.8	default

Application example

https://github.com/ARMmbed/mbed-os-example-lorawan/

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