Test Station Configuration¶
The test station configuration is the list of all parameters configuring the test station itself, that is parameters changing from station to station and test jig to test jig, such as ip adresses, com port, etc.
Definition¶
In the context of a test bench implementation on spintop-openhtf, the test station configuration is defined as a yaml file. As an example, the following yaml snippet defines the configuration of the serial port and ip address of a test bench.
serial :
comport: "COM4"
baudrate : "115200"
ip_address : "192.168.0.100"
test_constant: 4
Create a new .yml file, paste the above configurations in it and save it as config.yml in the same directory as your test bench main.py It will be imported in a test bench.
Load Configuration from File¶
To load the configurations in the test logic, the openhth conf module must be imported.
from openhtf.util import conf
The configuration parameters used must then be defined. A description of the configuration can be added to the declaration.
conf.declare("serial", 'A dict that contains two keys, "comport" and "baudrate"')
conf.declare("ip_address", 'The IP Address of the testbench')
conf.declare("test_constant", 'A test constant')
and the configuration file loaded.
conf.load_from_filename("config.yml")
Use Configuration¶
Once loaded and declared, the test station parameters can be accessed through the conf object. For example, to print soome of the configuration parameters, use the following in a test case:
print ("Serial port is {}".format(conf.serial["comport"]))
print ("IP address is {}".format(conf.ip_address))
print ("Test constant is {}".format(conf.test_constant))
Add the above code excerpts to your latest test bench and run it.
The test will print the information in the console window as
Serial port is COM4
IP address is 192.168.0.100
Test constant is 4
Built-in station id parameter¶
Spintop-openhtf uses a built-in parameter in the conf object that defines the test station id. The id used is the hostname of the PC on which the test bench runs. For example, printing the station ID of a PC whose hostname is “TutorialStation”
print ("Station ID is {}".format(conf.station_id))
will result in
Station ID is TutorialStation