節點紅色中的串行端口關閉問題

Question

我正在使用johnny-five，問題是如何關閉已經打開的串行端口？ 問題是當我重新部署紅色節點中的代碼時，它將引發錯誤，如下所示：

    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.

Answer 1

解決方法可能是將“部署”設置為“僅已修改的節點”，因此Node-RED僅在已更改的情況下才重啟johnny-5。

您必須與johnny-五個節點（ node-red-contrib-gpio ？）的開發人員提出問題，才能正確解決此問題。