64 lines
2.0 KiB
Python
64 lines
2.0 KiB
Python
import xml.etree.ElementTree as ET
|
|
|
|
class Xml_reader:
|
|
""" reader for the XML configuration """
|
|
|
|
def __init__(self, path):
|
|
"""inits the reader
|
|
|
|
Args:
|
|
path (string): path to the XML config file
|
|
"""
|
|
self.root = ET.parse(path).getroot()
|
|
|
|
def get_device_names(self):
|
|
"""returns the names of all devices in the config
|
|
|
|
Returns:
|
|
list: names of the devices
|
|
"""
|
|
return [device.get("name") for device in self.root.findall('Device')]
|
|
|
|
def get_value_info(self,device_name):
|
|
"""returns the value information for a device
|
|
|
|
Args:
|
|
device_name (string): the name of the relevant device
|
|
|
|
Returns:
|
|
dict: {'type','unit','offset','factor'}
|
|
"""
|
|
if self.root.find("Device[@name='%s']" % device_name) is None:
|
|
return None
|
|
value_info = self.root.find(
|
|
"Device[@name='%s']/ValueInfo" % device_name)
|
|
return {
|
|
'type': value_info.get('type'),
|
|
'unit': value_info.get('unit'),
|
|
'offset': None if value_info.find("Offset") is None
|
|
else value_info.find("Offset").text,
|
|
'factor': None if value_info.find("Factor") is None
|
|
else value_info.find("Factor").text,
|
|
}
|
|
|
|
def get_port(self,device_name):
|
|
"""returns the port details for a device
|
|
|
|
Args:
|
|
device_name (string): the name of the relevant device
|
|
|
|
Returns:
|
|
dict: {'protocol', [list: pins]}
|
|
"""
|
|
if self.root.find("Device[@name='%s']" % device_name) is None:
|
|
return None
|
|
port = self.root.find(
|
|
"Device[@name='%s']/Port" % device_name)
|
|
return {
|
|
'protocol': port.get('protocol'),
|
|
'pins': [
|
|
pin.text for pin in self.root.findall(
|
|
"Device[@name='%s']/Port/Pin" % device_name
|
|
)
|
|
]
|
|
} |