Hi Filomeno,
I believe that you are unable to find the PIC32MX block in Simulink.
I hope that you were able to add the ‘MPLAB Device Blocks for Simulink: dsPIC, PIC32 and SAM mcu’ add on.
From this add on you can get two microcontrollers from the PIC32 family
- ADC PIC32 High Speed SAR
- PIC32 EF Family
So, from what I understand there is no PIC32MX microcontroller available in this add on. However, there are other microcontrollers from the PIC32 family that you can use.
Hope this helps. Thanks