def ReverseByteOrder(data):
"""
Method to reverse the byte order of a given unsigned data value
Input:
data: data value whose byte order needs to be swap
data can only be as big as 4 bytes
Output:
revD: data value with its byte order reversed
"""
s = "Error: Only 'unsigned' data of type 'int' or 'long' is allowed"
if not ((type(data) == int)or(type(data) == long)):
s1 = "Error: Invalid data type: %s" % type(data)
print(''.join([s,'\n',s1]))
return data
if(data < 0):
s2 = "Error: Data is signed. Value is less than 0"
print(''.join([s,'\n',s2]))
return data
seq = ["0x"]
while(data > 0):
d = data & 0xFF # extract the least significant(LS) byte
seq.append('%02x'%d)# convert to appropriate string, append to sequence
data >>= 8 # push next higher byte to LS position
revD = int(''.join(seq),16)
return revD
