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97 lines
2.4 KiB
Markdown
97 lines
2.4 KiB
Markdown
# STM32WL family
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[st.com STM32WL family page](https://www.st.com/en/microcontrollers-microprocessors/stm32wl-series.html)
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This ST MCU family is dual-core : based on an Arm Cortex-M4 core and an Arm Cortex-M0+ core.
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Only M4 core is currently used by mbed-os applications.
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* [Supported boards](#supported-boards)
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* [NUCLEO_WL55JC](#nucleo_wl55jc)
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* [CUSTOM boards](#custom-boards)
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* [LoRa](#lora)
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* [MBED-OS support](#mbed-os-support)
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* [baremetal support](#baremetal-support)
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* [Antenna configuration](#antenna-configuration)
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* [GPIO debug pins](#gpio-debug-pins)
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* [mbed-os test](#mbed-os-test)
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* [Application example](#application-example)
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# Supported boards
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## NUCLEO_WL55JC
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[st.com STM32WL5x MCU page](https://www.st.com/en/microcontrollers-microprocessors/stm32wl5x.html)
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[st.com NUCLEO page](https://www.st.com/en/evaluation-tools/nucleo-wl55jc.html)
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[mbed.com NUCLEO page](https://os.mbed.com/platforms/ST-Nucleo-WL55JC/)
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- Total FLASH is 256KB
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- RAM: 64 KB
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## CUSTOM boards
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Check https://github.com/ARMmbed/stm32customtargets
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# LoRa
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## MBED-OS support
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Lora radio is enabled in default STM32WL configuration
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## baremetal support
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Baremetal is supported.
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mbed_app.json:
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```
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{
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"requires": ["bare-metal", "lora", "stm32wl-lora-driver"]
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}
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```
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## Antenna configuration
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NUCLEO HW configuration is provided as the default configuration.
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https://github.com/ARMmbed/mbed-os/blob/master/connectivity/drivers/lora/TARGET_STM32WL/STM32WL_radio_driver.cpp#L23
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```
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MBED_WEAK void set_antenna_switch(RBI_Switch_TypeDef state)
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```
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So you can overwrite it for your custom board.
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## GPIO debug pins
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2 pins can be configured to check RX and TX activity.
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Example of mbed_app.json:
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```
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{
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"target_overrides": {
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"NUCLEO_WL55JC": {
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"stm32wl-lora-driver.debug_rx": "LED1",
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"stm32wl-lora-driver.debug_tx": "LED2"
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}
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}
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}
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```
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## mbed-os test
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| target | platform_name | test suite | result | elapsed_time (sec) | copy_method |
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|---------------------|---------------|----------------------------------------------------|--------|--------------------|-------------|
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| NUCLEO_WL55JC-ARMC6 | NUCLEO_WL55JC | connectivity-lorawan-tests-tests-lorawan-loraradio | OK | 44.8 | default |
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## Application example
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https://github.com/ARMmbed/mbed-os-example-lorawan/
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