system.serial.readUntil
This function is used in Python Scripting.
Description​
Reads a byte at a time from a serial port until a delimiter character is encountered. The read will block for up to timeout milliseconds before returning.
caution
If the delimiter is not found before the timeout period, then the buffer will dump, potentially resulting in data loss.
Client Permission Restrictions​
This scripting function has no Client Permission restrictions.
Syntax​
system.serial.readUntil(port, delimiter, includeDelimiter, [timeout])
Parameters​
| Type | Parameter | Description |
|---|---|---|
| String | port | The previously configured serial port to use. |
| Char | delimiter | The delimiter to read until. |
| Boolean | includeDelimiter | If true, the delimiter will be included in the return value. |
| Integer | timeout | Timeout in milliseconds. Default is 5000. [optional] |
Returns​
String - Returns a String containing all 8-bit ASCII characters read until the delimiter was reached, and including the delimiter if the "includeDelimiter" parameter was true.
Scope​
Gateway, Vision Client, Perspective Session
Code Example​
Code Snippet
# This example will read bytes from an open port called "COM1" until the delimiter character is reached.
port = "COM1"
delimiter = "$"
system.serial.readUntil(port,delimiter,True)
Keywords​
system serial readUntil, serial.readUntil