Python 零散脚本

test

# 生成正弦波 wav 250
import wave
import math
import array

# 音频参数
sample_rate = 44100  # 采样频率
duration = 60*10  # 音频时长（秒）

# 创建一个新的WAV文件
output_file = wave.open('output.wav', 'w')
output_file.setnchannels(1)  # 单声道
output_file.setsampwidth(2)  # 2字节，16位
output_file.setframerate(sample_rate)

# 生成250Hz的音频数据
samples = array.array('h', [0] * (sample_rate * duration))
amplitude = 2 ** 15 - 1  # 振幅

for i in range(len(samples)):
    t = float(i) / sample_rate  # 当前时间（秒）
    samples[i] = int(amplitude * math.sin(2 * math.pi * 250 * t))

# 将音频数据写入WAV文件
output_file.writeframes(samples)

# 关闭WAV文件
output_file.close()

# 生成指定的bin
import os
import binascii
import random

file_path = 'example.bin'
# file_size = 0x3150
file_size = 1024*8

with open(file_path, 'wb') as f:
    remaining_bytes = file_size
    buffer_size = 1024  # 每次写入的字节数
    while remaining_bytes > 0:
        buffer = bytearray(random.getrandbits(8) for _ in range(min(buffer_size, remaining_bytes)))
        f.write(buffer)
        remaining_bytes -= buffer_size

#! /usr/bin/env python
#coding=utf-8
import os
import time
from ctypes import *
import numpy as np 

class USBI2C():
    ch341 = windll.LoadLibrary("C:/WCH.CN/CH341PAR/CH341DLLA64.dll")
    def __init__(self, usb_dev = 0, i2c_dev = 0):
        self.usb_id   = usb_dev
        self.dev_addr = i2c_dev
        if USBI2C.ch341.CH341OpenDevice(self.usb_id) != -1:
            USBI2C.ch341.CH341SetStream(self.usb_id, 0x80)
            USBI2C.ch341.CH341CloseDevice(self.usb_id)
        else:
            print("USB CH341 Open Failed!")

    def read(self, addr,len):
        if USBI2C.ch341.CH341OpenDevice(self.usb_id) != -1:
            obuf = (c_byte * 2)()
            ibuf = (c_byte * len)()
            obuf[0] = self.dev_addr
            obuf[1] = addr
            USBI2C.ch341.CH341StreamI2C(self.usb_id, 2, obuf, len, ibuf)
            USBI2C.ch341.CH341CloseDevice(self.usb_id)
            # return ibuf[0] & 0xff
            return ibuf
        else:
            print("USB CH341 Open Failed!")
            return 0

    def write(self, addr, dat):
        if USBI2C.ch341.CH341OpenDevice(self.usb_id) != -1:
            obuf = (c_byte * 3)()
            ibuf = (c_byte * 1)()
            obuf[0] = self.dev_addr
            obuf[1] = addr
            obuf[2] = dat & 0xff
            USBI2C.ch341.CH341StreamI2C(self.usb_id, 3, obuf, 0, ibuf)
            USBI2C.ch341.CH341CloseDevice(self.usb_id)
        else:
            print("USB CH341 Open Failed!")

if __name__ == '__main__':
    
    regs_add = [0x0b,0x0f,0x24,0x25,0x26,0x2e,0x2f]
    for i in range(len(regs_add)):
        i2cDevice = USBI2C(0,0x32)
        buf = i2cDevice.read(regs_add[i],1)
        print(hex(regs_add[i]),hex(c_uint8(buf[0]).value))