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c7f2fd5bec
1.增加移远云初始化时，qos配置 2.修改数据串口发送前 package_datas函数 3.修改modbus模式下，移远云不获取topic id 4.移远云中增加透传发送through_po 5.cloud_read_data_parse_main 函数中增加移远云没有topic id只有pkgid的特殊处理
71 lines
2.0 KiB
Python
71 lines
2.0 KiB
Python
from usr.modules.common import Singleton
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class DtuProtocolData(Singleton):
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def __init__(self):
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self.crc_table = []
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self._create_table()
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def _create_table(self):
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poly = 0xEDB88320
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a = []
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for byte in range(256):
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crc = 0
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for bit in range(8):
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if (byte ^ crc) & 1:
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crc = (crc >> 1) ^ poly
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else:
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crc >>= 1
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byte >>= 1
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a.append(crc)
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self.crc_table = a
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def crc32(self, crc_string):
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value = 0xffffffff
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for ch in crc_string:
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value = self.crc_table[(ord(ch) ^ value) & 0xff] ^ (value >> 8)
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crc_value = str((-1 - value) & 0xffffffff)
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return crc_value
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def package_datas(self, msg_data, topic_id=None, channel_id=None):
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print(msg_data)
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print("test691")
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data = []
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msg_length = len(str(msg_data))
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if channel_id is not None:
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data.append(str(channel_id))
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if topic_id is not None:
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data.append(str(topic_id))
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data.append(str(msg_length))
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print("test692")
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print("data array:", data)
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if len(msg_data) != 0:
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crc32_val = self.crc32(str(msg_data))
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data.append(crc32_val)
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data.append(str(msg_data))
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data_str = ",".join(data)
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ret_bytes = data_str.encode()
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print("ret_bytes:", ret_bytes)
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return ret_bytes
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def validate_length(self, data_len, msg_data, str_msg):
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if len(msg_data) < data_len:
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self.concat_buffer = str_msg
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self.wait_length = data_len - len(msg_data)
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print("wait length")
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print(self.wait_length)
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return False
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elif len(msg_data) > data_len:
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self.concat_buffer = ""
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self.wait_length = 0
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return False
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else:
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self.concat_buffer = ""
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self.wait_length = 0
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return True
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