SCI waveforms visualization after IC MUXed

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Jacobo
Jacobo 2023-10-13
Hello,
A hardware genious in my company added a IC MUX (after CT) for sensing 3-phase currents in a current-controlled inverter; the idea is that the signals are multiplexed towards the ADCH19:
I'm utilizing a F2837xD for this design.
In order to send the phases in order to the ADCH19 input, A (GPIO84) and B (GPIO87) pins have to be 00 for phase R, 01 for phase S, and for phase T 10.
For debugging, I added two discrete pulse generators connected to mentioned GPIO's and some selecting signals to have the visualization phases in order:
The ADC is triggered by software, but at I cannot obtain any output waveforms at all.
I made a simple setup to confirm if my SCI was working corectly:
Obtaining a clean sinusoidal waveform.
Could you please tell me what I'm doing wrong? or there is a better way to obtain these waveforms from the IC MUX as mentioned?
Thank you.

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