paulscherrerinstitute/asynInterposeDelay

Adds delays between the bytes of asyn driver output for devices that need this.

AsynInterposeDelay

This is an interpose layer for asyn octet drivers. It adds the feature to have a delay after every chunk of characters written to the device. The default chunk size is 1.

Usage

In the startup script, after loading the asynInterposeDelay driver and setting up an asyn octet port, call asynInterposeDelay to add this interpose layer to an existing asyn octet port/address.

At run-time, delay and chunk size can be examined or changed using the asyn option interface with the "delay" or "chunksize" option, respectively.

The delay is a floating point number in seconds.

The chunk size is an unsigned integer. 0 is treated as 1.

asynInterposeDelay "port", address, "delay", chunksize
asynShowOption "port", address, "delay"
asynShowOption "port", address, "chunksize"
asynSetOption "port", address, "delay", delay
asynSetOption "port", address, "chunksize", chunksize

Example startup script

drvAsynSerialPortConfigure "port", "/dev/ttyS0"
asynInterposeDelay "port", 0, 0.001

Example interactive delay display and change

asynShowOption "port", 0, "delay"
asynSetOption "port", 0, "delay", 0.05
asynShowOption "port", 0, "chunksize"
asynSetOption "port", 0, "chunksize", 32