Software Flow Control on IMX6

Technical Support
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1

Hello all,
I’m trying to implement serial communication with one device which uses software flow control X-ON/X-OFF.

Is there reference code made for this kind of application? (I’m using C++). I have searched google but couldn’t find any satisfactory reference.

2

Dear @kshah,

Could you try portDCB configuration mentioned on this page https://www.toradex.com/community/questions/42900/software-flow-control-not-working-on-t20.html

Let us know if it don’t work for you.

3

Hello,
we tried it. But we are not sure how to use these settings
portDCB.XonChar = 0x11;
portDCB.XoffChar = 0x13;

Do we need to send these Xonchar, Xoffchar before and after data string ?

4

Dear @kshah,

Could you refer to this document for a more theoretical explanation of UART flow control: https://www.silabs.com/documents/public/application-notes/an0059.0-uart-flow-control.pdf.

Could you install Windows Embedded Compact from here? There are sample codes available.

Let us know if you have any other questions.