Generating 180 Degree Phase Shifted Waveforms for Logic 1 and 0 on Microcontroller

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#1 21677086 04 Mar 2017 12:18

Tapajit Mondal Tapajit Mondal

Anonymous

Post #1
21677086 04 Mar 2017 12:18

Hello dear friends,

The following image is that of a Data signal, one waveform is used to represent logic level 1 and other 180 degree phase shifted waveform represents logic 0. Can someone please provide some input on how I may be able to generate the following waveforms on a micro-controller ?

Regards,
TM
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#2 21677087 04 Mar 2017 14:03

Dean Franks Dean Franks

Anonymous

Post #2
21677087 04 Mar 2017 14:03

Use two digital outputs, drive a resistor ladder DAC with the pattern:
2-3-1-2-2-3-1-2-2-1-3-2

to generate the waveform you provided. If you need a hardware assisted way (rather than bit banging gpio pins), let us know what microcontroller you are using and whether the microcontroller has to be able to do other things at the same time.

https://en.wikipedia.org/wiki/Resistor_ladder
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Generating 180 Degree Phase Shifted Waveforms for Logic 1 and 0 on Microcontroller

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