HI BAJ, I see it but does it mean start/stop also will be inverted? the way it says= it sounds like it does invert the whole thing. 1 =3D UxTX Idle state is 0 0 =3D UxTX Idle state is 1 thanks I am going to try it. Andre ________________________________ From: Byron Jeff To: Microcontroller discussion list - Public. =20 Sent: Saturday, October 5, 2013 9:19 PM Subject: Re: [EE]: Invert UART including start/stop bit without external ha= rdware =20 Andre, Check the UART section of the family reference. They are located here: http://www.microchip.com/stellent/idcplg?IdcService=3DSS_GET_PAGE&nodeId=3D= 2575 It's section 21. In the status and control register there is a UTXINV bit that does what you require. BAJ On Sat, Oct 05, 2013 at 08:37:07PM -0700, Andre Abelian wrote: >=20 >=20 > Hi All, >=20 > I need to invert the whole UART input including start and stop bit. same = as adding external inverter 7404. > I like to know if this is possible doing it in pic? =A0I am using =A0PIC2= 4FJ256GB110. =A0 > did any one try it any info?=A0 >=20 > thanks >=20 > Andre =A0=A0 > --=20 > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist --=20 Byron A. Jeff Chair: Department of Computer Science and Information Technology College of Information and Mathematical Sciences Clayton State University http://faculty.clayton.edu/bjeff --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .