a USB MCU communication procedures, the U I now use a lot of useful background

USB DemoCode
............\IDE2.0.0
............\........\Demo1_for_61broad
............\........\.................\broad_code(firmware)
............\........\.................\....................\chap9.c.bak
............\........\.................\....................\chap9.h
............\........\.................\....................\D12CI.h
............\........\.................\....................\Device.env
............\........\.................\....................\Easyusb11.lib
............\........\.................\....................\ExternInt.c
............\........\.................\....................\hardware.asm
............\........\.................\....................\hardware.h
............\........\.................\....................\hardware.inc
............\........\.................\....................\isr.asm
............\........\.................\....................\isr.h
............\........\.................\....................\Makefile
............\........\.................\....................\PWM.WAV
............\........\.................\....................\readme.txt
............\........\.................\....................\Resource.asm
............\........\.................\....................\Resource.inc
............\........\.................\....................\System.asm
............\........\.................\....................\usb061.env
............\........\.................\....................\usb061.h
............\........\.................\....................\usb061.lik
............\........\.................\....................\usb061.opt
............\........\.................\....................\usb061.rc
............\........\.................\....................\usb061.scs
............\........\.................\....................\usb061.set
............\........\.................\....................\usb061.spj
............\........\.................\....................\usb11.h
............\........\.................\....................\usbmain.c
............\........\.................\....................\usbmain.h
............\........\.................\pc_code
............\........\.................\.......\Debug
............\........\.................\.......\ReadMe.txt
............\........\.................\.......\Release
............\........\.................\.......\res

............\........\.................\.......\...\Testfirm.rc2
............\........\.................\.......\resource.h
............\........\.................\.......\SETUPAPI.LIB
............\........\.................\.......\StdAfx.cpp
............\........\.................\.......\StdAfx.h
............\........\.................\.......\Testfirm.aps
............\........\.................\.......\Testfirm.clw
............\........\.................\.......\Testfirm.cpp
............\........\.................\.......\Testfirm.dsp
............\........\.................\.......\Testfirm.dsw
............\........\.................\.......\Testfirm.h
............\........\.................\.......\Testfirm.ncb
............\........\.................\.......\Testfirm.opt
............\........\.................\.......\Testfirm.plg
............\........\.................\.......\Testfirm.rc
............\........\.................\.......\TestfirmDlg.cpp
............\........\.................\.......\TestfirmDlg.h
............\........\.................\.......\USB11_D12.dll
............\........\.................\.......\USB11_D12.lib
............\........\Demo1_for_box
............\........\.............\box_code(firmware)
............\........\.............\..................\chap9.c
............\........\.............\..................\chap9.h
............\........\.............\..................\CMacro.lib
............\........\.............\..................\D12CI.c
............\........\.............\..................\D12CI.h
............\........\.............\..................\Device.env
............\........\.............\..................\

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