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UART in half_duplex in K20(Single-wire Mode)

Question asked by Reshma Kalavoor Chembai on May 15, 2017
Latest reply on May 23, 2017 by Reshma Kalavoor Chembai

Hello,

 

I am trying to work with the UART in MK20DN512VLK10 processor in half duplex mode in RS485 type physical interface . 

 

When I try to work in Single-Wire UART mode (LOOPS =1 and RSRC =1), I am not able to receive the data even if the transmit direction is kept as Input (TXDIR  = Input).

Transmit works fine when the transmit direction is changed to Output(TXDIR  = Output).

 

Please let me know whether there is any other setting that needs to be done to receive the data.

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