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AYada.8
Associate
May 22, 2023
Question

Does STM32G070RBT6 MCU support USART(RS-232) software (XON/XOFF) flow control by default? If not, then after enabling HW flow control using .ioc file is there anything else that I will have to do to get the Hw flow control working?

I am using USART2 in DMA mode for Tx/Rx. I have attached the USART configuration after enabling HW flow control CTS/RTS. Are the configurations corrrect or do I have to modify anything?
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3 replies

waclawek.jan
Super User
May 22, 2023

> Does STM32G070RBT6 MCU support USART(RS-232) software (XON/XOFF) flow control by default?

As its name says, *software* flow control is performed in *software*. In other words, *you* have to write software so that it supports *software* flow control.

JW

AYada.8
AYada.8Author
Associate
May 22, 2023

I asked this because many of the processors and Micro-controllers support XON/XOFF flow control by default. One can just enable them like HW flow control. We can even do this in Tera-Term.

Anyways, please let me know if HW flow control requires any software to be updated or not?