acassis commented on issue #3680:
URL: https://github.com/apache/nuttx-apps/issues/3680#issuecomment-5129096176

   @fdcavalcanti probably it is happening because you are not using a terminal 
that supports VT102/VT220 ANSI escape sequence. Before this patch the serial 
driver was blocking most of the VT102 and VT220 byte sequences. This is exactly 
to avoid the serial driver consuming/blocking it blindly.
   
   I don't remember all the details, but I think pytest uses pyserial, so you 
need to filter out these sequences:
   
https://www.google.com/search?q=how+to+filter+out+VT102%2FVT220+ANSI+escape+sequence+on+pyserial%3F
   


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