driver/pe6216: add support for Aten PE6216 PDU

doc/configuration.rst

@@ -196,6 +196,9 @@ Currently available are:
 ``netio_kshell``
   Controls *NETIO 4C PDUs* via a Telnet interface.
 
+``pe6216``
+  Controls an Aten PE6216 PDU via a simple HTTP API.
+
 ``raritan``
   Controls *Raritan PDUs* via SNMP.
 

labgrid/driver/power/pe6216.py

@@ -0,0 +1,49 @@
+"""Tested with Aten PE6216.
+
+HTTP API is defined by in the aten PDU PE6216 specification:
+https://assets.aten.com/product/manual/Restful-API-Guide-for-PDU_2022-11-18.pdf
+"""
+import re
+import requests
+
+PORT = 80
+
+MIN_OUTLET_INDEX = 1
+MAX_OUTLET_INDEX = 16
+headers = {'Content-Type': 'application/x-www-form-urlencoded'}
+
+def power_set(host, port, index, value):
+    index = int(index)
+    assert MIN_OUTLET_INDEX <= index <= MAX_OUTLET_INDEX
+    value = 'on' if value else 'off'
+
+    requests.post(
+        f'http://{host}:{port}/api/outlet/relay',
+        headers=headers,
+        data={
+            'usr': 'administrator',
+            'pwd': 'password',
+            'index': index,
+            'method': value,
+        }
+    )
+
+
+def power_get(host, port, index):
+    index = int(index)
+    assert MIN_OUTLET_INDEX <= index <= MAX_OUTLET_INDEX
+
+    response = requests.get(
+        f'http://{host}:{port}/api/outlet/relay',
+        headers=headers,
+        params={
+            'usr': 'administrator',
+            'pwd': 'password',
+            'index': index,
+        }
+    )
+
+    m = re.search( r'<\d+>(?P<state>(ON|OFF|PENDING))<.*', response.text)
+    if m is None:
+        raise RuntimeError('PE6216: could not match reponse')
+    return m.group('state') == 'ON'