在Python中接收16位整数

Question

我正在通过串行端口从硬件读取 16 位整数。

使用Python，我怎样才能得到正确的LSB和MSB，并使Python明白它是我正在摆弄的16位有符号整数，而不仅仅是两个字节的数据？

Answer 1

尝试使用 struct 模块：

import struct
# read 2 bytes from hardware as a string
s = hardware.readbytes(2)
# h means signed short
# < means "little-endian, standard size (16 bit)"
# > means "big-endian, standard size (16 bit)"
value = struct.unpack("<h", s) # hardware returns little-endian
value = struct.unpack(">h", s) # hardware returns big-endian