185 lines
6.0 KiB
Python
185 lines
6.0 KiB
Python
import struct
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import logging
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import binascii
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class Command191A:
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def __init__(self):
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self.command_19 = 0x19 # 卡鉴权上报命令
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self.command_1a = 0x1A # 平台回复卡鉴权命令
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def parse_19_card_auth(self, data):
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"""
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解析19H卡鉴权上报命令
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:param data: 完整的19H命令报文
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:return: 解析后的字典或None
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"""
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try:
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# 验证基本帧格式
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if len(data) < 14 or data[0:2] != b'JX' or data[2] != 0x19:
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logging.warning(f"19H命令帧格式不正确，原始报文: {binascii.hexlify(data)}")
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return None
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# 打印完整的原始报文以便调试
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print(f"完整原始报文: {binascii.hexlify(data)}")
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# 提取桩号
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pile_id_bytes = data[3:11]
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# 提取时间标识
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time_bytes = data[14:20]
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year = time_bytes[0] + 2000
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month, day, hour, minute, second = time_bytes[1:6]
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timestamp = f"{year:04d}-{month:02d}-{day:02d} {hour:02d}:{minute:02d}:{second:02d}"
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# 提取卡号（通常是ASCII字符串）
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card_number_start = 22
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card_number_end = card_number_start + 16
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card_number = data[card_number_start:card_number_end].decode('ascii').rstrip('\x00')
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# 打印解析结果
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print("\n19H卡鉴权上报命令解析结果:")
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print(f"桩号: {pile_id_bytes.hex()}")
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print(f"时间标识: {timestamp}")
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print(f"卡号: {card_number}")
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return {
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"pile_id": pile_id_bytes.hex(),
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"timestamp": timestamp,
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"card_number": card_number
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}
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except Exception as e:
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logging.error(f"解析19H命令失败: {str(e)}")
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logging.error(f"原始报文: {binascii.hexlify(data)}")
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return None
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def generate_1a_card_auth_response(self, card_number):
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"""
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生成1AH卡鉴权响应命令
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:param card_number: 卡号
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:return: 1AH响应报文
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"""
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try:
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# 构建帧
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frame = bytearray()
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frame.extend(b'JX') # 帧起始标志
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frame.append(self.command_1a) # 命令码
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frame.extend(bytes.fromhex('0317665611360637')) # 桩号（固定值）
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frame.append(0x01) # 数据加密方式
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# 构建数据域
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data = bytearray()
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# 时间标识（当前时间）
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from datetime import datetime
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now = datetime.now()
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data.extend(struct.pack("<BBBBBB",
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now.year - 2000, now.month, now.day,
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now.hour, now.minute, now.second))
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# 卡号（16字节ASCII，不足补0）
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card_number_bytes = card_number.ljust(16, '\x00').encode('ascii')
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data.extend(card_number_bytes)
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# 卡余额（假设为0）
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data.extend(struct.pack("<I", 0)) # 4字节，分辨率0.01元
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# 允许充电标志（1-可充电；2-禁止充电）
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data.append(0x01)
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# 不可充电原因（如果允许充电，则为0）
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data.append(0x00)
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# 计费模型选择（1-使用本地计费模型）
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data.append(0x01)
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# 计费模型版本（假设为1）
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data.extend(struct.pack("<H", 1))
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# 停车费费率（假设为0）
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data.extend(struct.pack("<I", 0))
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# 时段数（假设为1个）
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data.append(0x01)
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# 第1个时段起始时间（假设为全天）
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data.extend([0x00, 0x00]) # 起始时
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# 第1个时段类型（平段）
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data.append(0x03)
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# 第1个时段电价费率（假设为0.1元/kWh）
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data.extend(struct.pack("<I", 1000))
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# 第1个时段服务费率（假设为0.05元/kWh）
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data.extend(struct.pack("<I", 500))
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# 数据域长度
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frame.extend(struct.pack("<H", len(data)))
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# 加入数据域
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frame.extend(data)
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# 计算校验码
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check = 0
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for b in frame[2:]:
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check ^= b
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frame.append(check)
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print("1AH卡鉴权响应数据构建成功:")
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print(f"数据内容: {frame.hex()}")
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print(f"数据长度: {len(frame)}字节")
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return bytes(frame)
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except Exception as e:
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logging.error(f"生成1AH卡鉴权响应出错: {str(e)}")
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return None
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def process_19_card_auth(self, data):
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"""
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处理19H卡鉴权上报命令
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:param data: 完整的19H命令报文
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:return: 是否成功处理
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"""
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try:
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parsed_data = self.parse_19_card_auth(data)
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if parsed_data is None:
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logging.warning("19H命令解析失败")
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return False
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# 记录卡鉴权信息日志
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logging.info(f"收到桩号 {parsed_data['pile_id']} 的卡鉴权请求，卡号 {parsed_data['card_number']}")
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return True
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except Exception as e:
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logging.error(f"处理19H命令出错: {str(e)}")
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return False
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# 测试用例
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if __name__ == "__main__":
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# 19H命令测试报文
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test_19_data = bytes.fromhex(
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"4A 58 19 03 17 66 56 11 36 06 37 01 16 00 19 01 09 0C 15 2B 65 36 39 61 32 31 30 33 00 00 00 00 00 00 00 00 14")
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# 1AH命令测试报文
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test_1a_data = bytes.fromhex(
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"4A 58 1A 03 17 66 56 11 36 06 37 01 1D 00 19 01 09 0C 15 2E 65 36 39 61 32 31 30 33 00 00 00 00 00 00 00 00 A5 0E 0D 00 01 00 01 BF")
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parser = Command191A()
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# 测试解析19H命令
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parser.process_19_card_auth(test_19_data)
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# 测试生成1AH响应
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card_number = "e69a21033"
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response = parser.generate_1a_card_auth_response(card_number)
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print("\n1AH卡鉴权响应:")
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print(response.hex()) |