Switch between Mass Storage and Custom HID in Composite project

[fiim]

Posted on July 22, 2013 at 09:36

Hellow! (stm32f37)�?�ow would you organize Switch between Mass Storage and Custom HID in Composite project? Where is the variable, changing which can be initialized either hid or mass storage or together?

[dthedens23]

Posted on July 22, 2013 at 17:14

The USB Host (PC) enumerates the device. It does this by asking questions that the device must respond to. The configuration is constant so these answers are coded in structures in flash. This happens when the device is inserted.

Single Device can be a MS or Single Device can be HID or Composite Device can be both MS and HID by using more endpoints Single Device cannot switch enumeration on the fly (without some special considerations) there are examples of composite devices. attached custom HID + CDC ________________ Attachments : CDC_HID_Composit.c : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006I0db&d=%2Fa%2F0X0000000bc2%2FSelgCS.nW7ArpMI8nlxDyZ1GmUCeKbL73.sZHfM8Fjs&asPdf=false

[fiim]

Posted on July 22, 2013 at 21:49

Thank you! So, if I want to switch between the 3 types, I should have in my program(flash) 3 patterns: Composite_DeviceDescriptor[], HID_DeviceDescriptor[] and MassStorage_DeviceDescriptor[]. Now I have to uninitialize (USB_deinit) the previous and re-initialize using a different descriptor. So?