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RS485 example for stm32 G4

abhijith_raj
Associate III

‎2025-05-14 12:01 AM

Hi,
Is there any RS485 example code available for STM32G497 ?
I referred in community for sample code for enabling RS485, didn't get it.

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Saket_Om
ST Employee

‎2025-05-14 3:06 AM

Hello @abhijith_raj 

Unfortunately, there is no example RS485 in our STM32Cube firmware.

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Saket_Om
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abhijith_raj
Associate III

‎2025-05-14 3:38 AM

Hi @Saket_Om 
I'm implementing RS485 using USART1 and need to configure the DE (Driver Enable) pin. I came across the HAL_RS485Ex_Init() API in the HAL driver, but I didn't find any specific configuration related to the DE pin within it. Should I call HAL_RS485Ex_Init() instead of HAL_UART_Init() for RS485 functionality, or is it required to use both? Also, how exactly should the DE pin be configured in this context?

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