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LPUART Hardware flow control

Question asked by Brendan Cassidy on Jul 29, 2019
Latest reply on Jul 31, 2019 by Brendan Cassidy

Trying to understand the MODIR values/settings for hardware handshaking


I have a simple setup, two SK146 EVBs sitting next to each other.

Connections are crossed, Rx to Tx and CTS to RTS.


Both boards have UART 0 configured in the same way, one od sending a short message out periodically.

For the purpose of this design, interrupts cannot be used and the receiver is polling the status register and so flow control is required.

There are 8 bits of MODIR involved in the configuration of the handshaking but I find the explanation very confusing.


Is there an application note for this?

Or can someone simply share a known working value for basic cross-connected handshaking?