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AM335x UART hardware flow control issue

Hi Ti experts,


I am implementing the UART hardware flow control feature on our own OS rather than Linux.

I enable the auto-CTS/auto-RTS following the section 19.4.1.2.1 Hardware Flow Control Configuration of AM335x ARM® Cortex™-A8 Microprocessors Technical Reference Manual.
I use a PC program that can manipulate the RTS signal to high or low(this is verified by measuring the voltage of Pin 8 of the UART DCE interface.

Whatever I set to the RTS of the PC COM interface, the target can send out characters and the PC can receive it, the flow control doesn't not take effect.


 I use UART2(J12 on the Daughterboard) at #Profile 4, AM335x EVM Rev 1.4A for this test.

I notice that there is an Incident Report SDOCM00085586 for UART hardware flow control.

I'd like to know whether the #IR SDOCM00085586() is also applied to UART2(J12 on the Daughterboard) at #Profile 4, AM335x EVM Rev 1.4A?

Thank you!


Best Regards,

Guohu