Generating Bipolar Encoded signal using MCU

[Amr Wael]

Hello ,

I would like to make bipolar encoding using microcontroller STM32 , I have 2 states only 1 and 0 ,
What hardware can be used to generate this signal with the MCU , is there an IC or should I build a circuit ?

Here is a link for the waveforms that I desire to generate

Bipolar encoding - Wikipedia

en.wikipedia.org

Thank you very much in advance.

 

[danadakk]

Convert NRZ to RZ :

https://www.electronicproducts.com/nrz-to-rz-data-conversion-using-high-speed-or-and/

Regards, Dana.

 

[KlausST]

Hi,

my first question is: Why? Aren´t there better/simpler solutions?

With two sates only (one signal) it can´t work. You need at least a second signal. I´d vote for some kind of "clock" signal.
--> USART instead of UART .. for example.

****
Hardware:
It depends on signal voltages, currents, impedances, frequency / baud_rate ... and so on.

In simplest case you could use an RS232 transmitter IC,
But you could also use other ICs, like flip flops and analog_MUX.
or a circuit based on discretes like transistors.

Klaus

 

[BradtheRad]

From the article it appears as though output is determined from your data as well as incoming clock pulses. This brings to mind a D flip-flop whose changes of state are delayed until a clock pulse arrives. JK flip-flop is similar.

Flip-flops have Q and bar-Q outputs. As each is an inversion of the other, you can obtain bipolar AC by connecting a load across them. Can your mcu do the same thing if you program two of its outputs to be at inverted states of each other?