标签: 设备固件

ThisdocumentdiscussesthetechnicaldetailsandfunctionalityoftheMicrochipUSBDeviceFirmwareFramework.Itassumesthattheprogrammeralreadyisfamiliarwiththefollowing:ïHowtowriteCprogramsïHowtousetheMPLABIntegratedDevelopmentEnvironment(IDE)ïThemicrocontrollerdatasheetforwhichthecodeisbeingwrittenïBasicUSBconcepts,suchasthosecoveredinchapters5,8and9intheofficialUSB2.0specificationsItemsdiscussedinthischapterinclude:ïConventionsUsedinthisGuideïRecommendedReadingïTheMicrochipWebSiteïDevelopmentSystemsCustomerChangeNotificationServiceïCustomerSupportïDocumentRevisionHistoryMicrochipUSBDeviceFirmwareFrameworkUser’sGuide2008MicrochipTechnologyInc.DS51679BNotethefollowingdetailsofthecodeprotectionfeatureonMicrochipdevices:MicrochipproductsmeetthespecificationcontainedintheirparticularMicrochipDataSheet.Microchipbelievesthatitsfamilyofproductsisoneofthemostsecurefamiliesofitskindonthemarkettoday,whenusedintheintendedmannerandundernormalconditions.Therearedishonestandpossiblyillegalmethodsusedtobreachthecodeprotectionfeature.Allofthesemethods,toourknowledge,requireusingtheMicrochipproductsinamanneroutsidethe……