A SML (Smart Message Language) library
This library can be used to parse SML byte streams. It does not read from external devices.
The sml2mqtt program makes use of this library.
Example:
from smllib import SmlStreamReader
stream = SmlStreamReader()
stream.add(b'BytesFromSerialPort')
sml_frame = stream.get_frame()
if sml_frame is None:
print('Bytes missing')
# Shortcut to extract all values without parsing the whole frame
obis_values = sml_frame.get_obis()
# return all values but slower
parsed_msgs = sml_frame.parse_frame()
for msg in parsed_msgs:
# prints a nice overview over the received values
print(msg.format_msg())SmlMessage
transaction_id: 17c77d6b
group_no : 0
abort_on_error: 0
message_body <SmlOpenResponse>
codepage : None
client_id : None
req_file_id: 07ed29cd
server_id : 11111111111111111111
ref_time : None
sml_version: None
crc16 : 25375
SmlMessage
transaction_id: 17c77d6c
group_no : 0
abort_on_error: 0
message_body <SmlGetListResponse>
client_id : None
sever_id : 11111111111111111111
list_name : 0100620affff
act_sensor_time : 226361515
val_list: list
<SmlListEntry>
obis : 8181c78203ff
status : None
val_time : None
unit : None
scaler : None
value : ISK
value_signature: None
-> (Hersteller-Identifikation)
<SmlListEntry>
obis : 0100000009ff
status : None
val_time : None
unit : None
scaler : None
value : 11111111111111111111
value_signature: None
-> (Geräteeinzelidentifikation)
<SmlListEntry>
obis : 0100010800ff
status : 386
val_time : None
unit : 30
scaler : -1
value : 123456789
value_signature: None
-> 12345678.9Wh (Zählerstand Total)
<SmlListEntry>
obis : 0100010801ff
status : None
val_time : None
unit : 30
scaler : -1
value : 123456789
value_signature: None
-> 12345678.9Wh (Zählerstand Tarif 1)
<SmlListEntry>
obis : 0100010802ff
status : None
val_time : None
unit : 30
scaler : -1
value : 0
value_signature: None
-> 0.0Wh (Zählerstand Tarif 2)
<SmlListEntry>
obis : 0100100700ff
status : None
val_time : None
unit : 27
scaler : 0
value : 555
value_signature: None
-> 555W (aktuelle Wirkleistung)
<SmlListEntry>
obis : 8181c78205ff
status : None
val_time : None
unit : None
scaler : None
value : XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
value_signature: None
-> (Öffentlicher Schlüssel)
list_signature : None
act_gateway_time: None
crc16 : 22117
SmlMessage
transaction_id: 17c77d6d
group_no : 0
abort_on_error: 0
message_body <SmlCloseResponse>
global_signature: None
crc16 : 56696