USART with RTS/CTS in ATSAM4LS8A

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Hi all,

 

I am trying to enable RTS/CTS flow control on one of the UARTs of the device above. It is not clear to me if hardware handshaking can work without using the PDC DMA controller with the UART.

 

The datasheet for the CPU says that RTS is asserted/de-asserted according to the status of the CSR.RXBUFF bit which is controlled by the PDC. Some code examples that I have seen all use the PDC.

 

Is it possible to use hardware handshaking without using the PDC?

 

Thank you in advance for your support.

Last Edited: Thu. May 4, 2017 - 05:58 PM