Arduino mega 2560 Pin 9 issue

Question

David Hughes on 30 Dec 2020

2
Link

Direct link to this question

https://nl.mathworks.com/matlabcentral/answers/705248-arduino-mega-2560-pin-9-issue

Commented: Walter Roberson on 7 May 2023

Hello,

I'm using the Simulink support package for Arduino Hardware and going through this example https://uk.mathworks.com/help/supportpkg/arduino/ref/communicating-with-arduino-hardware.html

communicating with arduino hardware.

I'm using Windows 10, 2020b, connecting by USB.

At "Task 3 - Simulate the Model

To simulate the model, follow these steps:

1. Observe that the model plays the motion energy recorded in a room and compares it with a threshold to detect intrusion.

2. In the model, change the Simulation mode on the toolbar to Normal. This tells Simulink to run the model on the host computer. See Task 4 below to run the model on the Arduino target hardware.

3. In the model, click the Run button in the Simulink toolbar."

For the suimulation mode is it this dropdown which includes 'Accelerator' and 'Fast Accelerator' in which case where is the 'External' mentioned in the following task?

If it is this then when used I am getting this error;

"MATLAB System block 'arduino_communication/Digital Output' error occurred when invoking 'setupImpl' method of 'codertarget.arduinobase.blocks.DigitalWrite'. The error was thrown from ' 'C:\ProgramData\MATLAB\SupportPackages\R2020b\toolbox\target\shared\devicedrivers\+matlabshared\+devicedrivers\+blocks\DigitalIO.p' at line 0'.

Caused by:

Configuring Pin 9 as Digital Input/Output failed. Pin 9 is not a valid Digital Input/Output pin. Reconnect the hardware, provide a valid Digital Input/Output pin number for your hardware and try again. "

Am I using the wrong Normal or is there an issue with Pin 9 on the Mega? The example states it is configured for the Mega already.

Thanks in advance.