CT_project/入口引导提示节点/led.py

import socket
import time

string_color = {
    "UNKNOWN":'',            #
    "RED":'\\C1',         #红色, 默认
    "GREEN":'\\C2',       #绿色
    "YELLOW":'\\C3',      #黄色
    "BLUE":'\\C4',        #蓝色
    "CYAN":'\\C5',        #青色
    "PURPLE":'\\C6',      #紫色
    "WHITE":'\\C7'       #白色
}
class Led31():
    def __init__(self,ip,port):
        self.ip=ip
        self.port=port

    def display(self,area_index, input, color):
        self.sock=socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        self.sock.settimeout(1)
        try:
            self.sock.connect((self.ip,self.port))
            self.sock.send(self.generate_bytes(area_index, input, color))
            self.sock.close()
        except:
            pass
        time.sleep(0.01)

    def generate_bytes(self,area_index, input, color):
        input = color + input

        #  area_index = 0  #显示区域编号
        x = 0           #显示区域左上角x,单位像素
        y = area_index*17           #显示区域左上角y,单位像素
        width = 79     #显示区域宽,单位像素
        heigth = 16    #显示区域高,单位像素


        #msg = bytearray(input, encoding='utf-8')
        msg = bytearray(input, encoding='gbk')

        m_frame_head = bytearray(8) #帧头, 默认8个0xA5
        m_frame_head[0:8] = b'\xA5\xA5\xA5\xA5\xA5\xA5\xA5\xA5'

        m_frame_configuration = bytearray(14) #包头, 配置参数, 14个byte
        m_frame_configuration[0:12]=b'\xfe\xff\x00\x80\x00\x00\x00\x00\x00\x00\x63\x02'
        # m_frame_configuration 最后2个是 数据域长度,后面在写

        m_cmd_head = bytearray(7) #指令头, 默认7个byte
        m_cmd_head[0:7] = b'\xA3\x06\x01\x00\x00\x00\x01'

        m_area_head = bytearray(29) #区域头, 默认29个byte
        # m_area_head 前面2个是 区域的数据长度, 后面在写
        m_area_head[2] = 0
        t_area_x = 0x8000+x	# 区域 X 坐标,默认以字节(8 个像素点)为单位, 高字节最高位为 1 时,表示以像素点为单位
        m_area_head[3]=t_area_x%256
        m_area_head[4]=int(t_area_x/256)
        t_area_y = y	#区域 Y 坐标,以像素点为单位
        m_area_head[5]=t_area_y%256
        m_area_head[6]=int(t_area_y/256)
        t_area_width = 0x8000+width	#区域宽度,默认以字节(8 个像素点)为单位, 高字节最高位为 1 时,表示以像素点为单位
        m_area_head[7]=t_area_width%256
        m_area_head[8]=int(t_area_width/256)
        t_area_height = heigth	#区域高度,以像素点为单位
        m_area_head[9]=t_area_height%256
        m_area_head[10]=int(t_area_height/256)
        m_area_head[11] = area_index
        m_area_head[12:25] = b'\x00\x00\x02\x00\x00\x00\x00\x02\x01\x01\x00\x00\x0a'
        #m_area_head[21] = 1 #0x01——静止显示
        #m_area_head[21] = 5 #0x05——向上移动
        #m_area_head后面4个是 显示字符串 的长度, 后续在写.

        #长度整合
        t_show_string_len = len(msg)
        m_area_head[25] = t_show_string_len%256
        m_area_head[26]=(int(t_show_string_len/256))%256
        m_area_head[27]=(int(t_show_string_len/256/256))%256
        m_area_head[28]=(int(t_show_string_len/256/256/256))%256
        t_area_data_len = 29-2+ len(msg)
        m_area_head[0]=t_area_data_len%256
        m_area_head[1]=int(t_area_data_len/256)
        t_data_len = 7 + 29 + len(msg)
        m_frame_configuration[12] = t_data_len%256
        m_frame_configuration[13] = int(t_data_len/256)

        #crc校验码
        t_result_src = m_frame_configuration + m_cmd_head + m_area_head +msg
        crc=self.crc16(t_result_src)
        [a1,a2]=self.dec2hex(crc)
        m_frame_crc = bytearray(2) #crc校验码, 2个byte, 包校验为包头数据和数据域的校验值
        m_frame_crc[0]=a1
        m_frame_crc[1]=a2


        p_src = t_result_src + m_frame_crc
        p_dst = bytearray(1024)
        i=0
        j=0
        for i in range(len(p_src)):
            if p_src[i] == 0xA5:
                p_dst[j] = 0xA6
                p_dst[j+1] = 0x02
                j+=2
            elif  p_src[i] == 0xA6:
                p_dst[j] = 0xA6
                p_dst[j+1] = 0x01
                j+=2
            elif  p_src[i] == 0x5A:
                p_dst[j] = 0x5B
                p_dst[j+1] = 0x02
                j+=2
            elif  p_src[i] == 0x5B:
                p_dst[j] = 0x5B
                p_dst[j+1] = 0x01
                j+=2
            else:
                p_dst[j] = p_src[i]
                j = j+1

        m_frame_tail = bytearray(1)
        m_frame_tail[0] = 90 #就是0x5A

        output = m_frame_head + p_dst[0:j] + m_frame_tail
        return output

    def dec2hex(self,num):
        a=int(num/256)
        b=int(num%256)
        return [b,a]
    def crc16(self,bytes):
        crc=0
        for byte in bytes:
            crc=byte^crc
            for i in range(8):
                if crc&0x01==1:
                    crc=(crc>>1)^0xA001
                else:
                    crc=crc>>1
        return crc

class EntranceLED(Led31):
    def __init__(self,ip,port):
        Led31.__init__(self,ip,port)

        self.last_suv={"color":string_color["RED"],"string":"剩SUV   0"}
        self.last_small={"color":string_color["RED"],"string":"剩轿车  0"}
        self.last_idle={"color":string_color["GREEN"],"string":"初始化"}


    def fresh_led(self,suv,small,entrance_busy):
        suv_info={}
        small_info={}
        idle_info={}
        if suv<=0:
            suv_info["color"]=string_color["RED"]
        elif entrance_busy==True:
            suv_info["color"]=string_color["YELLOW"]
        else:
            suv_info["color"]=string_color["GREEN"]

        if small<=0:
            small_info["color"]=string_color["RED"]
        elif entrance_busy==True:
            small_info["color"]=string_color["YELLOW"]
        else:
            small_info["color"]=string_color["GREEN"]

        suv_info["string"]='剩SUV   %02d'%suv
        small_info["string"]='剩轿车  %02d'%small

        if not self.last_suv["color"]==suv_info["color"] or not self.last_suv["string"]==suv_info["string"]:
            self.display(0,suv_info["string"],suv_info["color"])
            self.last_suv=suv_info
        if not self.last_small["color"]==small_info["color"] or not self.last_small["string"]==small_info["string"]:
            self.display(1,small_info["string"],small_info["color"])
            self.last_small=small_info

        if suv<=0 and small<=0:
            idle_info["color"]=string_color["RED"]
            idle_info["string"]="车位已满"
        elif entrance_busy==True:
            idle_info["color"]=string_color["YELLOW"]
            idle_info["string"]="有车请等待"
        else:
            idle_info["color"]=string_color["GREEN"]
            idle_info["string"]="空闲可进入"

        if not self.last_idle["color"]==idle_info["color"] or not self.last_idle["string"]==idle_info["string"]:
            self.display(2,idle_info["string"],idle_info["color"])
            self.last_idle=idle_info