All pins reserved by Arduino servo

11 次查看（过去 30 天）
William Zhang
William Zhang 2022-4-17
编辑： William Zhang 2022-4-19
clc
clear
triggerPin = 'D2';
echoPin = 'D3';
servoPin = 'D4';
port = 'COM5';
board = 'Nano3';
ledWhite = 'D9';
ledGreen = 'D10';
ledRed = 'D11';
k = 1;
a = arduino(port,board,'Libraries',{'Servo','Ultrasonic'});
configurePin(a,servoPin,'DigitalOutput')
configurePin(a,ledWhite,'DigitalOutput')
configurePin(a,ledRed,'DigitalOutput')
configurePin(a,servoPin,'Servo')
s = servo(a, servoPin, 'MinPulseDuration', 700*10^-6, 'MaxPulseDuration', 2300*10^-6);
Hello everyone,
In the above code snippet, I cannot run all the LED pins because they are all reserved by servo. I have tried configure pin method but this does not work. Could someone please help? Am running MATLAB 2021b.
Error:
"Nano3 Pin D9 is reserved by Servo. To release the resource, clear all variables holding onto this resource."
(Same error for all three pins)
  2 个评论
Walter Roberson
Walter Roberson 2022-4-18
https://www.arduino.cc/reference/en/libraries/servo/ says that pins 9 and 10 are reserved, except 11 and 12 instead for Mega
William Zhang
William Zhang 2022-4-19
Thank you very much! For those students that are wondering by this post in the future, here's all I did:
[Notice how all these pins are repositioned appropriately this time]::
triggerPin = 'D2';
echoPin = 'D3';
servoPin = 'D9';
port = 'COM5';
board = 'Nano3';
ledWhite = 'D5';
ledGreen = 'D6';
ledRed = 'D11';

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

William Zhang
William Zhang 2022-4-19
编辑：William Zhang 2022-4-19
Heyo everyone, the issue has been resolved thanks to the amazing commentor, Walter Roberson (see comment section).
Here the pins are made new and appropriate to correct pins, where only 9 and 10 are used by servo::
triggerPin = 'D2';
echoPin = 'D3';
servoPin = 'D9';
port = 'COM5';
board = 'Nano3';
ledWhite = 'D5';
ledGreen = 'D6';
ledRed = 'D11';

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Startup and Shutdown 的更多信息

标签

产品


版本

R2021b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by