Coverage for d7a/dll/background_frame.py: 81%

27 statements  

« prev     ^ index     » next       coverage.py v7.5.0, created at 2024-05-24 08:03 +0200

1# 

2# Copyright (c) 2015-2021 University of Antwerp, Aloxy NV. 

3# 

4# This file is part of pyd7a. 

5# See https://github.com/Sub-IoT/pyd7a for further info. 

6# 

7# Licensed under the Apache License, Version 2.0 (the "License"); 

8# you may not use this file except in compliance with the License. 

9# You may obtain a copy of the License at 

10# 

11# http://www.apache.org/licenses/LICENSE-2.0 

12# 

13# Unless required by applicable law or agreed to in writing, software 

14# distributed under the License is distributed on an "AS IS" BASIS, 

15# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 

16# See the License for the specific language governing permissions and 

17# limitations under the License. 

18# 

19import pprint 

20 

21from d7a.d7anp.addressee import IdType 

22from d7a.support.schema import Validatable, Types 

23from d7a.dll.background_frame_control import BackgroundFrameControl 

24from d7a.d7anp.frame import Frame as D7anpFrame 

25 

26 

27class BackgroundFrame(Validatable): 

28 

29 SCHEMA = [{ 

30 "subnet": Types.BYTE(), 

31 "control": Types.OBJECT(BackgroundFrameControl), 

32 "payload": Types.BITS(16), 

33 "crc16" : Types.BITS(16) # TODO does not work, look into this later {'validator': validate_crc } 

34 }] 

35 

36 def __init__(self, subnet, control, payload, crc16): 

37 self.subnet = subnet 

38 self.control = control 

39 self.payload = payload 

40 self.crc16 = crc16 

41 # TODO validate CRC 

42 

43 super(BackgroundFrame, self).__init__() 

44 

45 # def validate_crc(self, value, error): 

46 # raw_data = [] 

47 # raw_data.append(self.length) 

48 # raw_data.append(self.subnet) 

49 # raw_data.append(self.control) 

50 # raw_data.append(self.target_address) 

51 # raw_data.append(self.payload) 

52 # crc = calculate_crc(raw_data) 

53 

54 

55 @staticmethod 

56 def parse(s): 

57 subnet = s.read("int:8") 

58 control = BackgroundFrameControl.parse(s) 

59 payload = s.read("uint:16") 

60 crc = s.read("uint:16") 

61 

62 return BackgroundFrame( 

63 subnet=subnet, 

64 control=control, 

65 payload=payload, 

66 crc16=crc 

67 ) 

68 

69 

70 def __iter__(self): 

71 yield self.subnet 

72 for byte in self.control: yield byte 

73 for byte in self.payload: yield byte 

74 yield self.crc16 

75 

76 def __str__(self): 

77 return pprint.PrettyPrinter().pformat(self.as_dict())