artiq-zynq/src/gateware/endianness.py

22 lines
462 B
Python

from migen import *
def convert_signal(signal):
assert len(signal) % 8 == 0
nbytes = len(signal)//8
signal_bytes = []
for i in range(nbytes):
signal_bytes.append(signal[8*i:8*(i+1)])
return Cat(*reversed(signal_bytes))
def convert_value(value, size):
assert size % 8 == 0
nbytes = size//8
result = 0
for i in range(nbytes):
result <<= 8
result |= value & 0xff
value >>= 8
return result