STM32WL - 1st microcontroller SoC with LoRa

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rcolistete
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STM32WL - 1st microcontroller SoC with LoRa

Post by rcolistete » Mon Dec 07, 2020 6:27 am

STM32WL - 1st microcontroller SoC family with LoRa, was announced in January 2020 :
https://www.st.com/en/microcontrollers- ... eries.html
https://www.st.com/content/st_com/en/pr ... 2wlex.html
https://blog.st.com/stm32wl/
https://www.st.com/resource/en/datashee ... wle5jc.pdf
It doesn't have WiFi, neither Bluetooth, only SX126x LoRa transceiver, so it will be useful as LoRa(Wan) node. The STM32WLE5 is a low power MCU, with low frequency (48 MHz), up to 64KB of RAM, up to 256 kB of internal flash, with many low power modes :
- deepsleep : 31 nA (shutdown), 360 nA (standby with RTC), 1.07 µA (stop2 with RTC);
- < 72 µA/MHz without LoRa, x 48 MHz = 3,456 mA;
- 5.4 mA in LoRa RX;
- 15-87 mA in LoRa TX (10-20 dBm).
- MCU runs @ 2 MHz consuming 0.6-0.7 mA;
- it has LPRun (Low Power Run) mode, @ 2 MHz consumes 0.22 mA, while @ 0,4 MHz consumes only 52 uA.

Since November 2020 there is a LoRa-E5 STM32WLE5JC module from SeeedStudio, US$9.90 (first batch of the module is sold out, now it is again in pre-order).

So let us share the MicroPython port efforts in this topic. There was already some MicroPython community interest since January 2020 Melbourne MicroPython Meetup.
My "MicroPython Samples". My "MicroPython Firmwares" with many options (double precision, ulab, etc).

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mattyt
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Re: STM32WL - 1st microcontroller SoC with LoRa

Post by mattyt » Mon Dec 07, 2020 1:50 pm

Unfortunately the Nucleo-WL55JC development board for this chip just doesn't seem available (at least the JC1 variant I'd need in Australia). If it were I'd be very keen to work on a MicroPython port! I just don't have time to design/build my own board...

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rcolistete
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Re: STM32WL - 1st microcontroller SoC with LoRa

Post by rcolistete » Wed Dec 09, 2020 5:06 am

The SeeedStudio LoRa-E5 module seems to be simple to use (just few components to make a board using it). But I haven't succeded to buy one from 1st batch.

I hope that it is just a matter of time to have some development boards with STM32WL available (in 2021).
My "MicroPython Samples". My "MicroPython Firmwares" with many options (double precision, ulab, etc).

micado2
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Re: STM32WL - 1st microcontroller SoC with LoRa

Post by micado2 » Fri Dec 11, 2020 10:57 am

Hello guys,
Nucleo with WL seems available for all countries --> https://www.st.com/en/evaluation-tools/ ... sample-buy
I'm also very interested by a FW for STM32WL nucleo board!

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mattyt
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Re: STM32WL - 1st microcontroller SoC with LoRa

Post by mattyt » Sun Dec 13, 2020 12:10 am

micado2 wrote:
Fri Dec 11, 2020 10:57 am
Nucleo with WL seems available for all countries --> https://www.st.com/en/evaluation-tools/ ... sample-buy
The JC2's are available but unfortunately I can't find a distributor for a JC1 variant (which I need for Australian use). That STM32 page suggests Rutronik have them...but JC1's aren't listed there.

If anyone can find a Nucleo-WL55JC1 I'd be very keen to get my hands on one!

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