mirror of
https://gitee.com/Lyon1998/pikapython.git
synced 2025-01-15 17:02:53 +08:00
38 lines
693 B
Python
38 lines
693 B
Python
def convert_to_modbus(num):
|
|
# 判断输入数值的符号
|
|
if num >= 0:
|
|
sign = 0
|
|
else:
|
|
sign = 1
|
|
|
|
# 如果是负数，将其转换为补码形式
|
|
if sign:
|
|
num = (~(-num) + 1) & 0xFFFF
|
|
|
|
return num
|
|
|
|
|
|
def convert_from_modbus(num):
|
|
# 判断输入数值的符号
|
|
if (num & 0x8000):
|
|
sign = 1
|
|
else:
|
|
sign = 0
|
|
|
|
# 如果是负数，将其转换回原始的负数形式
|
|
if sign:
|
|
num = -((~num + 1) & 0xFFFF)
|
|
|
|
return num
|
|
|
|
|
|
# 测试示例
|
|
num = -10
|
|
modbus_value = convert_to_modbus(num)
|
|
|
|
original_value = convert_from_modbus(modbus_value)
|
|
|
|
assert modbus_value == 65526
|
|
assert original_value == -10
|
|
print("PASS")
|