有把一個帶符號的16位整數(shù)分開2個8位的（高8位的稱高位，低8位的稱低位）數(shù)據(jù)的需求，就有合并2個8位（高8位的稱高位，低8位的稱低位）的數(shù)據(jù)的需求

以下是對帶符號的16位的整數(shù)高位低位數(shù)據(jù)進行合并，還原拆分的數(shù)據(jù)，返回一個帶符號16位的數(shù)據(jù)，適用取值范圍 -32768～32767。

# 詳細說明：https://lingshunlab.com/program/python/python-high-byte-and-low-byte-merge-decade

def highlow_merge_signed(highbyte, lowbyte):
    merge_num = (highbyte  * 256) + lowbyte
    # merge_num =  (highdata << 8) + lowdata # 另一種方式的合并數(shù)據(jù)
    if merge_num > 32767:
         merge_num = merge_num - 65536

    return merge_num

審核編輯：劉清