AnsweredAssumed Answered

USB CDC (Virtual COM) and DFU (Device Firmware Upgrade)

Question asked by edific on Oct 7, 2011
Latest reply on Oct 30, 2011 by Tormod
Hi, i m using stm32 cortext m3. Is it normal to have CDC (virtual com port) combine with FDU to become a composite USB device? Is there any example on this? Thanks.

This is so that a PC application can perform not only firmware upgrade but also other communication/operations with uC. The PC application will make sure that uC is in the right mode before performing firmware upgrade.