Teensy4 Hardware Interrupt Problem

Hello community,

I installed simulink hardware support package for Arduino. Created a new model, selected Teensy 4.1. I selected Hardware Interrupt block. Put it in the model. Selected the CAN3_Handler.

Created a function call subsystem. Inside it I put onboard CAN recieve and selected CAN3.

Im getting this error which I couldnt understand:

Error evaluating 'InitFcn' callback of HardwareInterrupt block (mask) 'untitled/Hardware Interrupt'.

Callback string is 'codertarget.arduinobase.conflictcheck.validateandregisterBlocks(gcbh);

matlabshared.svd.internal.interruptBlockMask(gcb,'blockInitFcn');'

Caused by:

Hardware Interrupt block 'untitled/Hardware Interrupt' is not supported on the Teensy 4.1 (Arduino Compatible) hardware board.

You can either change the Arduino hardware or remove the Hardware Interrupt block from model and try again.

I already selected Teensy 4.1 as a target but I dont understand the error. This block seems to be created specifically for Teensy 4.1 but it says it is not supported. What am I missing here?

Thanks in advance,

Answer 1

[Walter Roberson]

https://www.mathworks.com/help/simulink/supportpkg/arduino_ref/transmit-receive-data-can-blocks.html

The CAN receive block is supported on a variety of Arduino hardware. The Teensy is not on the list of supported hardware.

The block you found is not specific to Teensy: it is for Arduino, but not all ardunino is supported.

[Soner]

Hello Walter,

The block I used was onboard can receive which also supports teensy

https://uk.mathworks.com/help/simulink/supportpkg/arduino_ref/onboardcanreceive.html

I have no problem with that block. The issue is the hardware interrupt block which seems to be made for teensy but even with the simplest model I couldn’t make it work

[Walter Roberson]

I see.

Could you confirm that you are using the block described at https://www.mathworks.com/help/simulink/supportpkg/arduino_ref/hardwareinterruptadvancedteensy4.html ? I notice the one there is labeled "CAN1 Handler" (not CAN3 Handler), and has a block name of "Hardware Interrupt" (absent from your diagram.)

[Soner]

yes I confirm Im using that block and if you look closely in the screenshot thats the Hardware Interrupt block. when you click elsewhere in the model, the name is hidden. Inside the block there are 3 options. CAN1_Handler,CAN2_Handler,CAN3_Handler. I need this for CAN3 and I selected CAN3_Handler. I put the onboard can receive block inside a function call so that I can call the receive block when there is a message.