node red serial port closing issue

[siddharth fultariya]

hello, i am using johnny-five and the problem is how to close the serial port which is already opend?now the problem is when i re-deploy the flow in node-red it will generate an error as shown below:

10 Feb 10:38:33 - [info] Stopping flows
10 Feb 10:38:33 - [info] Stopped flows
10 Feb 10:38:33 - [info] Starting flows
1518239313152 Connected COM6
10 Feb 10:38:33 - [info] Started flows
1518239313157 Error Opening COM6: Access denied
(node:12788) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 1): Error: Unhandled "error" event. ([object Object])
(node:12788) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
1518239323160 Device or Firmware Error A timeout occurred while connecting to the Board.

[Mark Setrem]

there's no need to shout!

What version of node-red?
What operating system?
What version of nodejs?

[siddharth fultariya]

 Node-red Version : 0.18.2
Operating system : windows 10
Version of Node.js : 8.9.4

[Julian Knight]

Can you connect to COM6 manually using a terminal emulator or the Arduino monitor?

What makes you think that the serial port is open? The error is a permissions issue.

[siddharth fultariya]

i thinks that serial port is open, because when i deploy the flow first time in node red it works fine but when  i re-deploy the flow in Node-Red it throws an error "access denied" due to this behavior i thought that serial port might be opened.  

[Julian Knight]

Ah, so perhaps Johnny 5 or te j5 node isn't releasing the serial port on redeploy. Maybe raise an issue there?