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FlexIO UART Modbus RTU RS485

Question asked by Diego Valerio on Jan 11, 2019
Latest reply on Jan 14, 2019 by Mark Butcher

Hi!

Can anyone helpe me to fix a problem i am having with FlexIO UART Modbus RTU RS485?

I have problems with the transmit routine. After writting all characters with FLEXIO_UART_WriteByte, I disable the Tx interrupt using FLEXIO_UART_DisableInterrupts. After that, I clear the control pin for the RS485. But this action makes my response frame gets 0xFF or 0xFE in the last transmitted byte, instead the correct value.

 

Hope somebody could help me.

Thanks.

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