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UART DR vs TDR/RDR registers

Question asked by Romain Delhomel on Apr 16, 2018
Latest reply on Apr 16, 2018 by Romain Delhomel

I don't understand something, what's the point of TDR and RDR registers if during the Receive and Transmit functions they read/write into the DR register.

Moreover UART is normally full duplex but if we read/write into the same register we only can be half duplex at the most.

Could you explain me this point please, thanks.