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USART2 RXNE not trigger if Rx and Tx happen same time

Question asked by chueh.fema on Jan 28, 2016
Latest reply on Jan 28, 2016 by Clive One
I am using the stm32f411 ,the USART2 work normally when the Rx and Tx not happen on the same time, if the Rx and Tx happen on the same time then rxne will not trigger. But if the next received byte come it will trigger the rxne but overrun bit did not rise.

Did any one have the similar problem ?
thanks

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