Invert tx Line on STM32

craig3 · ‎2009-11-20

Posted on November 20, 2009 at 15:55

craig3 · ‎2011-05-17

Posted on May 17, 2011 at 13:31

Is it possible to invert the tx line on an stm32?

I currently have a customer that wants me to invert the output of the tx line to make it compatible with their hardware, is this possible or will I need to implement a hardware buffer stage?

st3 · ‎2011-05-17

Posted on May 17, 2011 at 13:31

What ''tx line'' ?

tomas23 · ‎2011-05-17

Posted on May 17, 2011 at 13:31

If you mean UART Tx, then no, use single-gate or transistor inverter.

pranamesh · ‎2011-05-17

Posted on May 17, 2011 at 13:31

as edison says, not possible (or atleaste i dont know of). however if changing the hardware is not possible (say it is already manufactured and at customer site) then you may use the software usart to your ''inverted'' mode and update the firmware. there are lots of examples of such a piece of code.