AnsweredAssumed Answered

Character Match in UART setting problem

Question asked by fallah.omid on Nov 30, 2016
Latest reply on Dec 1, 2016 by Imen D

I am trying to set a character match interrupt on Uart2 of stm32L4 (discovery board).
all things work fine but it just seems to have a bug, in page 1229 of STM32L4X6 datasheet it is written:
"This bit field can only be written when reception is disabled (RE = 0) or the USART is disabled(UE=0)"

before i write CR2[32:24] for the Character, i Disable RE, but CR2 doesn't get new value !
it only gets new Value when i Disable UE !
means i have to disable whole uart to be able to write on CR2 character match side.
is it a bug in MCU or i'm doing something wrong ... ?!