iMX6 UART3 configuration issue in full UART mode (using RTS and CTS)

[jhalife]

Hi, We are working on NIT6Q_W development board and trying to get the UART3 port working along with hardware flow control signals RTS, CTS. Till now we are able to get the TX RX working without flow control but when we enable RTS and CTS signals UART3 stops working. We are using WEC 2013 OS and IOMUX UART3 configuration info is provided in file attached in this post. Kindly let us know if we are missing any thing as till now we are unable to get the UART3 port working.

Let me know if any other information is required on any item.

[igorpadykov]

Hi Gopal

first, one can check signals direction using Table 86. UART I/O Configuration vs. Mode

i.MX6DQ Datasheet

http://www.nxp.com/docs/en/data-sheet/IMX6DQCEC.pdf

and flow control description in sect.64.4.3 General UART Definitions i.MX6DQ Reference Manual

http://www.nxp.com/docs/en/reference-manual/IMX6DQRM.pdf

As NXP does not support WEC 2013 OS on i.MX6 platform (it supported by third parties like iwavesystems, witekio),

one can test with baremetal Github SDK
https://github.com/backenklee/swp-report/tree/master/iMX6_Platform_SDK

Best regards
igor
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