某串口数据校验工具

SerialDataCheck.py

str1 = "E0 06 00 0F 40 01 03 59"
REQ = str1.split(" ")
print(REQ)
rSYN, rESC, rLEN, rSUM, rESCsw = 0, 0, 0, 0, False

if REQ[0] == "E0":
    rSYN = "E0"
    rESC = "D0"
    rLEN = int(REQ[1], 16)
    print("读卡器数据，SYN是{}，ESC是{}，LEN是{}".format(rSYN, rESC, rLEN))
elif REQ[0] == "FF":
    rSYN = "FF"
    rESC = "FD"
    rLEN = int(REQ[2], 16)
    print("触摸数据，SYN是{}，ESC是{}，LEN是{}".format(rSYN, rESC, rLEN))
else:
    print("未知数据")
    exit(1)

for i in range(1, rLEN+1):
    if REQ[i] == rESC:
        rESCsw = True
        continue
    elif rESCsw:
        rSUM += int(REQ[i], 16)+1
        rESCsw = False
        continue
    rSUM += int(REQ[i], 16)

if REQ[0] == "E0":
    if (rSUM & 0xFF) == int(REQ[-1], 16):
        print("校验通过")
    else:
        print(hex(rSUM & 0xFF))
elif REQ[0] == "FF":
    if not (rSUM & 0xFF):
        print("校验通过")
    else:
        print(hex(rSUM & 0xFF))