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How to change the usb serial number

Hi

I have a unique serial number saved in EEPROM for each PCB, I want to assign that serial number string to the USB descriptor, so on windows, I can see that serial number. How can I do this? I see the USB descriptor serial number is defined as macro, can't be changed in run-time.

Thanks
Wang

Parents
  • Aha, I know how how "__week" works.
    But in this case, USBD_StringDescriptor definition uses bunch of #define macros and conditional compilation, which are defined in usb_lib.c and usb_config.c. To extract USBD_StringDescriptor definition, we have to make these macros referable. It's so troublesome. In this reason, above method is easier and safer, just to delete "const" modifier.

    Tsuneo

Reply
  • Aha, I know how how "__week" works.
    But in this case, USBD_StringDescriptor definition uses bunch of #define macros and conditional compilation, which are defined in usb_lib.c and usb_config.c. To extract USBD_StringDescriptor definition, we have to make these macros referable. It's so troublesome. In this reason, above method is easier and safer, just to delete "const" modifier.

    Tsuneo

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