from ctypes import *
import platform
from time import sleep
from usb_device import *
from usb2pwm import *if __name__ == '__main__': DevIndex = 0DevHandles = (c_int * 20)()# Scan deviceret = USB_ScanDevice(byref(DevHandles))if(ret == 0):print("No device connected!")exit()else:print("Have %d device connected!"%ret)# Open deviceret = USB_OpenDevice(DevHandles[DevIndex])if(bool(ret)):print("Open device success!")else:print("Open device faild!")exit()# Get device infomationUSB2XXXInfo = DEVICE_INFO()USB2XXXFunctionString = (c_char * 256)()ret = DEV_GetDeviceInfo(DevHandles[DevIndex],byref(USB2XXXInfo),byref(USB2XXXFunctionString))if(bool(ret)):print("USB2XXX device infomation:")print("--Firmware Name: %s"%bytes(USB2XXXInfo.FirmwareName).decode('ascii'))print("--Firmware Version: v%d.%d.%d"%((USB2XXXInfo.FirmwareVersion>>24)&0xFF,(USB2XXXInfo.FirmwareVersion>>16)&0xFF,USB2XXXInfo.FirmwareVersion&0xFFFF))print("--Hardware Version: v%d.%d.%d"%((USB2XXXInfo.HardwareVersion>>24)&0xFF,(USB2XXXInfo.HardwareVersion>>16)&0xFF,USB2XXXInfo.HardwareVersion&0xFFFF))print("--Build Date: %s"%bytes(USB2XXXInfo.BuildDate).decode('ascii'))print("--Serial Number: ",end='')for i in range(0, len(USB2XXXInfo.SerialNumber)):print("%08X"%USB2XXXInfo.SerialNumber[i],end='')print("")print("--Function String: %s"%bytes(USB2XXXFunctionString.value).decode('ascii'))else:print("Get device infomation faild!")exit()# Initialize adcPWMConfig = PWM_CONFIG()#我选的是P8，对应的PWM是CH3 二进制是1000 ->16进制是0x08PWMConfig.ChannelMask = 0x08for i in range(0,8):PWMConfig.Polarity[i] = 1 # 将所有PWM通道都设置为正极性for i in range(0,8):PWMConfig.Precision[i] = 100 # 将所有通道的占空比调节精度都设置为1%for i in range(0,8):PWMConfig.Prescaler[i] = 10 # 将所有通道的预分频器都设置为10，则PWM输出频率为200MHz/(PWMConfig.Precision*PWMConfig.Prescaler)for i in range(0,8):PWMConfig.Pulse[i] = PWMConfig.Precision[i]*30//100 # 将所有通道的占空比都设置为30%# 初始化PWMret = PWM_Init(DevHandles[DevIndex],byref(PWMConfig));if ret != PWM_SUCCESS:print("Initialize pwm faild!")exit()else:print("Initialize pwm sunccess!")print(DevHandles[DevIndex])# 启动PWM,RunTimeOfUs之后自动停止，利用该特性可以控制输出脉冲个数，脉冲个数=RunTimeOfUs*200/(PWMConfig.Precision*PWMConfig.Prescaler)#RunTimeOfUs=0,表示一直输出  RunTimeOfUs = 0ret = PWM_Start(DevHandles[DevIndex],PWMConfig.ChannelMask,RunTimeOfUs)if(ret != PWM_SUCCESS):print("Start pwm faild!")exit()else:print("Start pwm sunccess!")try:while (True):#改变PWM波形占空比 for j in range(0,101,2):for i in range(0,8):PWMConfig.Pulse[i] = j                 PWM_SetPulse(DevHandles[DevIndex],PWMConfig.ChannelMask,PWMConfig.Pulse)sleep(0.05)     for j in range(100,-1,-2):for i in range(0,8):PWMConfig.Pulse[i] = j                 PWM_SetPulse(DevHandles[DevIndex],PWMConfig.ChannelMask,PWMConfig.Pulse)                sleep(0.05)     except KeyboardInterrupt:pass# 停止PWM# l、et = PWM_Stop(DevHandles[DevIndex],PWMConfig.ChannelMask)# if(ret != PWM_SUCCESS):#     print("Stop pwm faild!");#     exit()# else:#     print("Stop pwm sunccess!")# Close deviceret = USB_CloseDevice(DevHandles[DevIndex])if(bool(ret)):print("Close device success!")else:print("Close device faild!")exit()

 PWMConfig.ChannelMask = 0x08

 PWMConfig.Pulse[i] = j