219126_en-US

UART CTS RTS not detecting

I am using i.MX53 processor in my design. I am using linux-2.6.35.3 kernel i.MX53 as BSP.
I am testing UART3(RS232) with RTS and CTS. If I disable RTS/CTS control flag(CRTSCTS). In this case I am able to transmit and receive the data through the UART3 port.
In this case if I enable RTS/CTS control flag (CRTSCTS ), the data transmission and reception is not happening.
Please let me know how to test the UART3 with the above scenario. Is there any application to test UART3 with RTS/CTS?

NOTE: I am using Software controlled-Hardware flow control(Handshaking control)

Please let me know whether this is enough? Or do i need to enable anything else on the driver side?

Raana

Re: UART CTS RTS not detecting

Is this issue resolved?

Re: UART CTS RTS not detecting

Hi Yuri,

do you know that the RTS signal is alsways an input to the iMX53 and that the CTS signal is always an output from the iMX cpu ?

Perhaps is that your problem

Regards

Re: UART CTS RTS not detecting

5-wire connection is needed for CTS / RTS flow control.