pyPLC/helpers.py

52 lines
1.6 KiB
Python
Raw Normal View History

def twoCharHex(b):
strHex = "%0.2X" % b
return strHex
def showAsHex(mybytearray, description=""):
packetlength = len(mybytearray)
strHex = ""
for i in range(0, packetlength):
strHex = strHex + twoCharHex(mybytearray[i]) + " "
print(description + "(" + str(packetlength) + "bytes) = " + strHex)
def prettyHexMessage(mybytearray, description=""):
packetlength = len(mybytearray)
strHex = ""
for i in range(0, packetlength):
strHex = strHex + twoCharHex(mybytearray[i]) + " "
return description + "(" + str(packetlength) + "bytes) = " + strHex
def compactHexMessage(mybytearray):
packetlength = len(mybytearray)
strHex = ""
for i in range(0, packetlength):
strHex = strHex + twoCharHex(mybytearray[i])
return strHex
def prettyMac(macByteArray):
s=""
2022-11-11 10:21:28 +00:00
length = len(macByteArray)
if (length!=6):
s="invalid MAC length " + str(length) + "!"
for i in range(0, length-1):
s = s + twoCharHex(macByteArray[i]) + ":"
2022-11-11 10:21:28 +00:00
s = s + twoCharHex(macByteArray[length-1])
return s
def combineValueAndMultiplier(value, mult):
# input: value and multipliers as strings
# output: The numerical value x* 10^mult
x = float(value)
m = int(mult)
return x * 10**m
if __name__ == "__main__":
print("Testing the helpers")
print(str(combineValueAndMultiplier("123", "0")) + " should be 123")
print(str(combineValueAndMultiplier("5678", "-1")) + " should be 567.8")
print(str(combineValueAndMultiplier("-17", "1")) + " should be -170")
print(str(combineValueAndMultiplier("4", "4")) + " should be 40000")