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stm32f100 U(S)ART and busy flag

Question asked by semler.miloslav on Aug 25, 2014
Latest reply on Aug 27, 2014 by peacock.jack.003
I read the reference manual for circuit mentioned but I cannot find any flag in register for USART that will show there is some transmission/reception active. Is there someone who solved similar problem? I need this for my own irda multi-master protocol.