Example: tourism industry
AN3156 Application note - STMicroelectronics
interface. When the USB event is detected, the external oscillator is configured as USB clock source. MSv19042V3 BL_DFU Wait for enumeration No Yes Configure Oscillator mode (HSE/HSI)(3) Enumeration phase Enter DFU Mode Generate System Reset (1) Wait for Host Commands DFU request routines Yes Need Reset ? Leave DFU routine Jump to Application ...
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