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mirror of https://github.com/node-red/node-red-nodes.git synced 2023-10-10 13:36:58 +02:00
node-red-nodes/io/serialport
Dave Conway-Jones f6e71bf962
"revert" serial port and base64 nodes forwards....
undo buffer syntax updates
2017-06-30 19:52:20 +01:00
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locales/en-US Let serialport node only report errors once 2015-11-02 10:40:53 +00:00
25-serial.html Update licenses and packages for all nodes 2016-11-06 20:26:19 +00:00
25-serial.js "revert" serial port and base64 nodes forwards.... 2017-06-30 19:52:20 +01:00
LICENSE Update licenses and packages for all nodes 2016-11-06 20:26:19 +00:00
package.json "revert" serial port and base64 nodes forwards.... 2017-06-30 19:52:20 +01:00
README.md add a v0.3 serial port to help with node5/6 2016-05-26 19:41:47 +01:00

node-red-node-serialport

Node-RED nodes to talk to hardware Serial ports.

Note : The version 0.1.x of this package requires underlying serialport v2.0.x

Earlier versions of node.js, as found on default Debian install on a Raspberry Pi, require an updated version of npm. See below. Or you can install the older version of this node - node-red-node-serialport@0.0.5

Install

Run the following command in your Node-RED user directory (typically ~/.node-red):

    npm i node-red-node-serialport

For versions on node.js prior to 4.x (ie v0.10.x and v0.12.x) please install using

    sudo npm i -g npm@2.x
    npm i node-red-node-serialport

You may also have to install or upgrade GCC to be version 4.8 or better. Alternatively you can simply install the older version of this node.

    npm install node-red-node-serialport@0.0.5

During install there may be multiple messages about optional compilation. These may look like failures... as they report as failure to compile errors - but often are warnings and the node will continue to install and, assuming nothing else failed, you should be able to use it. Occasionally some platforms will require you to install the full set of tools in order to compile the underlying package.

Usage

Provides two nodes - one to receive messages, and one to send.

Input

Reads data from a local serial port.

Clicking on the search icon will attempt to autodetect serial ports attached to the device, however you many need to manually specify it. COM1, /dev/ttyUSB0, etc

It can either

  • wait for a "split" character (default \n). Also accepts hex notation (0x0a).
  • wait for a timeout in milliseconds for the first character received
  • wait to fill a fixed sized buffer

It then outputs msg.payload as either a UTF8 ascii string or a binary Buffer object.

If no split character is specified, or a timeout or buffer size of 0, then a stream of single characters is sent - again either as ascii chars or size 1 binary buffers.

Output

Provides a connection to an outbound serial port.

Only the msg.payload is sent.

Optionally the new line character used to split the input can be appended to every message sent out to the serial port.