All pins reserved by servo. I cant use a DC motor at the same time.
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Massimiliano Zingarelli on 13 Nov 2018
Hi everyone, I have just started to use MATLAB with arduino for a university project.
I'm trying to use both a servo and a DC motor with an arduino, but when I initialise the servo motor, all the pins (or at least the PWM ones) become reserved to the servo.
a = arduino('COM4', 'Uno', 'Libraries', 'Servo')
s = servo(a, 'D11', 'MinPulseDuration', 0.00055, 'MaxPulseDuration', 0.0024)
writePWMDutyCycle(a, "D9", 1)
The error I get is:
"Digital pin D9 is reserved by Servo in 'Reserved' mode. To change the pin configuration, clear all variables holding onto this resource."
I have tried other pins, but they are all reserved. If i don't initialise the servo, it works.
How can I reserve just one pin for the servo and not all of them?
More Answers (1)
I only have an MKR1000 at my disposal right now and here is what I tried with no error messages. See if a similar approach works for you on Uno.
a = arduino
s = servo(a, 'D9', 'MinPulseDuration', 0.00055, 'MaxPulseDuration', 0.0024)
writePWMDutyCycle(a, 'D10', 1)
This did not give me any errors, but I do not have actual devices connected. So I cannot confirm that the hardware is doing what it is supposed to. But there are no reasons why it should not.