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what this usart error exactly mean?

Question asked by navid ansari on Jul 15, 2017
Latest reply on Jul 29, 2017 by navid ansari


i receive this error on lpc1768


in api it says Receive data overflow

why should it overflow?everything is right on oscope

this usart connected to ADM485 that its output level is 5v and i maybe noise on input of ADM485 is leveled up and make this error happen?