Can we control RTS/CTS signle for Hardware flow control support for LPUART of Stm32l4r5?

[Bhushan]

Hi,

We are using LPUART port of the STM32L4R5 controller for communication with BLE for that we would like to use RTS/CTS signal.

How can i control/check the RTS/CTS signal?

Is it possible to control/check the RTS/CTS signal through the software?

Please provide the solution for same.

Thank you.

[Tesla DeLorean]

>>Is it possible to control/check the RTS/CTS signal through the software?

They can be used as GPIO, you can manage this entirely in software if you want.

The input pins are readable via GPIOx->IDR in all cases.

[Alex R]

The RTS/CTS signals are controlled by the hardware to implement the flow control (if enabled).

The status of the CTS signal (level and edge) can be detected via interrupts.

[Bhushan]

Thank you.

So I can monitor the CTS signal using this API "LL_USART_IsActiveFlag_CTS", Please confirm.

Or else please suggest any other method

[Alex R]

That is correct