usart stop and start bit

N

notwist

New Member

• May 2, 2008

• #1

In the data sheet, the start and stop bits are 0 and 1 respectively. Is it possible to switch them? Odd question I know but I was just curious if this is possible.

 

Nigel Goodwin

Super Moderator

Most Helpful Member

• May 2, 2008

• #2

Not really, as it's set in the hardware - by NOT using a MAX232 (or similar) every bit is reversed, is that what you want?. But you can't change just the start and stop bits, not when using the hardware USART.

 

ikalogic

Member

• May 2, 2008

• #3

as Nigel said, you can't.. but i am very curious though.. why do want to invert start and stop bits?

 

Mike - K8LH

Well-Known Member

• May 2, 2008

• #4

Did I see a "polarity" bit in an EUSART SFR for some PIC some time ago? If so, does anyone know what that does?

Mike

 

ikalogic

Member

• May 2, 2008

• #5

Mike said:

Did I see a "polarity" bit in an EUSART SFR for some PIC some time ago? If so, does anyone know what that does?

Mike

Click to expand...

I am not a PIC programmer, but i know that usually 'polarity' just inverts the clock signal..