license_plate_recognition/bx/BxCmdDelDynamicArea.py

from .BxCmd import baseBxCmd
from .BxCmdCode import CMD_DEL_DYNAMIC_AREA


class CmdDelDynamicArea(baseBxCmd):
    def __init__(self, numbers):
        super().__init__(CMD_DEL_DYNAMIC_AREA.group, CMD_DEL_DYNAMIC_AREA.code)
        self.numbers = numbers if numbers else []

    def Build(self):
        result = bytearray()
        # 写入命令组
        result.append(self.Group())
        # 写入命令
        result.append(self.Cmd())
        # 写入响应标志
        result.append(0x01)
        # 写入保留值
        result.extend([0x00, 0x00])
        
        # 写入数量
        l = len(self.numbers)
        if l == 0:
            result.append(0xff)
        else:
            result.append(l)
        
        # 写入编号
        for n in self.numbers:
            result.append(n)
        
        return bytes(result)


def NewCmdDelDynamicArea(numbers):
    return CmdDelDynamicArea(numbers)