Is there a way to overwrite simulink encoder block pins?

Question

Lachlan Downie 2022-10-23

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https://ww2.mathworks.cn/matlabcentral/answers/1833148-is-there-a-way-to-overwrite-simulink-encoder-block-pins

回答： Dhruv 2023-2-21

Hi! I'm having some issues using 'Simulink Support Package for Arduino Hardware' with my Arduino Uno and Arduino Motor Shield Rev3.

The support package includes a built in encoder block to read the position of a motor, however for the Uno it locks the encoder pins to Pin 2 and Pin 3, but the motor sheild uses pin 3 as pwm control for the motor duty cycle. I'm trying to use pins 2 and 4 for my encoder, leaving pin 3 for the pwm conrtrol, but the encoder block does not allow this.

Any support, advice, or workaround would be greatly appreciated.

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Answer 1

Dhruv 2023-2-21

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https://ww2.mathworks.cn/matlabcentral/answers/1833148-is-there-a-way-to-overwrite-simulink-encoder-block-pins#answer_1176110

The best possible solution which could help work out this issue is trying to use a different microcontroller that has more available pins or a built-in hardware encoder interface. (I would recommend Arduino Mega or Due)

Following is the list of Arduino Board/Digital pins usable for interrupts:

Uno, Nano, Mini, and other ATMega328-based boards - 2, 3
Mega, Mega2560, MegaADK - 2, 3, 18, 19, 20, 21 (20 and 21 are not available when they are used for I2C communication)
Micro, Leonardo, and other 32u4-based boards - 0, 1, 2, 3, 7
Nano 33 IoT - 2, 3, 9, 10, 11, 13, A1, A5, A7
Due - All digital pins