Connection between STM32 and SX126x on Wio-E5-LE

Products & Technology Wio Series
#1

Hello,

I am looking for a schematic or information about the connections between the STM32WLE5JC and the SX126x chip on the Wio-E5-LE. I would like to write my own application in CubeIDE, so I need to know how to configure SPI and GPIO to collaborate with the SX126x IC. The SX126x has 24 pins, including SPI and DIO pins.

How are these pins connected to the STM32? Which pins of the STM32 are used to control the SX126x? In the datasheet, I found only the information that say about only SPI connections between this two ICs but I stiil dont know pins numbers.

#2

Careful reading of the links below may give you the information you want.

1 Like
#3

So the STM32 has a built-in SX126x inside! I thought there were two separate ICs under the metal cover

#4

I believe the STM32 and SX126X are mounted under the metal cover of the Wio-E5-LE.

#5

From “Wio-E5-LE Wireless Module” datasheet:
“The module uses ST system on chip STM32WLE5JC, integrated high-
performance LoRa ® SX126X IP and ultra-low power Consumption of MCU.”

Photo “under the metal cover”

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#6

Thanks for the information.