raspberry pi GPIO connect with simulink

Question

qi 2019-7-3

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/469991-raspberry-pi-gpio-connect-with-simulink

评论： qi 2019-7-3

I have a dcdc model in simulink, I want to run the loop control algorithm on the raspberry pi. In other words, I need raspberry pi generate a siganl to control the dcdc model. When I try to use following method, I meet a problem "Do not assign the same GPIO number to multiple GPIO blocks in a model. ".so how to work this problem?

can i use different GPIO, and connect them through the wire on the raspberry pi board??

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Answer 1

Andrey Kiselnikov 2019-7-3

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https://ww2.mathworks.cn/matlabcentral/answers/469991-raspberry-pi-gpio-connect-with-simulink#answer_381745

Hi, you should understand that GPIO is configurable hardware. When you are launching the model on Raspberry it compiles in executable, that is trying to configure the MCU port as input and output simultaneously, that is incorrect.

The proposed method - using different pins connected by a wire is a good solution.

Also, you can evaluate all accessible pins and their functions by command line or script :

%create the system object, sure that no other Matlab functions drive your PI

mypi = raspi;

% watch pin diagram

showPins(mypi)

% clear system object

clear mypi;