How to send AT commands to the integrated wifi-module using internal uart in B-L475E-IOT1A

[Sabou]

I want to communicate with the wifi module integrated in the STM32 iot node using AT commands, so i configure the internal uart3 used by the module to receive AT commands and transmit the answer to the AT command but it doesn't work ?

[Mike_ST]

Well, I guess that according to the example in the CubeMX package, even though the board is UART capable, the ISM43362-M3G-L44 on this board has the SPI only firmware.

https://www.inventeksys.com/iwin/firmware/

[Sabou]

yes i try with the spi firmware and it works ; But the goal of my project is not to use the firmware , i need to establish a simple and basic communication with the integrated wifi-module using AT commands through the internal uart or spi (uart3 or spi3 used by the wifi module ) , is that possible ?

[Mike_ST]

Yes AT commands over SPI3 will work, not over UART3.

[Sabou]

yes, i've tried to send AT commands over SPI and it works ,i followed the IWIN guide for AT commands But still have a problem in two AT commands:C1=SSID and C2=Password to join a network, and I want to know if there is a special way or format to send this two commands ?