76 lines
1.5 KiB
Python
76 lines
1.5 KiB
Python
'''
|
|
FilePath: \hart\test\pkg\common.py
|
|
Author: shenghao.xu
|
|
Date: 2023-03-15 10:17:55
|
|
LastModifiedBy: shenghao.xu
|
|
LastEditTime: 2023-05-15 14:42:43
|
|
Descripttion:
|
|
'''
|
|
from ctypes import *
|
|
import ctypes
|
|
import os
|
|
import struct
|
|
import sys
|
|
|
|
|
|
def print_hex_data_space(bytes, uppercase=False):
|
|
l = ['{:02x} '.format(int(i)) for i in bytes]
|
|
if uppercase:
|
|
l = [i.upper() for i in l]
|
|
print("".join(l))
|
|
pass
|
|
|
|
|
|
def print_hex_space(bytes):
|
|
l = ['0x{:02x} '.format(int(i)) for i in bytes]
|
|
print("".join(l))
|
|
pass
|
|
|
|
|
|
# 十六进制打印
|
|
def print_hex(bytes):
|
|
l = [hex(int(i)) for i in bytes]
|
|
print("".join(l))
|
|
pass
|
|
|
|
|
|
# 数组异或操作
|
|
def xor(bytes):
|
|
result = 0
|
|
for i in bytes:
|
|
result ^= i
|
|
return result
|
|
|
|
|
|
# bytearray 转 ctypes
|
|
def bytes_to_ctypes(bytes):
|
|
return (c_ubyte * len(bytes))(*bytes)
|
|
|
|
|
|
def float_to_hex_str(f): # 浮点数转十六进制字符串
|
|
fp = ctypes.pointer(ctypes.c_float(f))
|
|
cp = ctypes.cast(fp, ctypes.POINTER(ctypes.c_long))
|
|
return hex(cp.contents.value)
|
|
|
|
|
|
class HiddenPrints:
|
|
def __enter__(self):
|
|
self._original_stdout = sys.stdout
|
|
sys.stdout = open(os.devnull, 'w')
|
|
|
|
def __exit__(self, exc_type, exc_val, exc_tb):
|
|
sys.stdout.close()
|
|
sys.stdout = self._original_stdout
|
|
|
|
|
|
|
|
class LimitedArray:
|
|
def __init__(self, capacity):
|
|
self.capacity = capacity
|
|
self.array = []
|
|
|
|
def append(self, element):
|
|
if len(self.array) >= self.capacity:
|
|
self.array.pop(0)
|
|
self.array.append(element)
|