DFU protocol init packet . What is the size of the select command ?

[smohan]

I am referring to this documentation on Message Sequence charts . I am working on the sample example of  BLE secure  DFU  bootloader , on the SDK v17.0.2 , softdevice S132

Nordic Semiconductor Infocenter .

I have some doubts regarding this . Does the Control point refer to the Control point characteristics of DFU service on the target?

What is the size of the 'Select' command 06 01 ?  or what is the size and field descriptors of the packet that the select command resides?

As mentioned  in nRF5 SDK v17.0.0: DFU protocol (nordicsemi.com) , does the  opcode 06  means select command , and what does 01 mention?

I am asking this regard for a documentation purpose for one of our client

[Vidar Berg]

Hello,

I have some doubts regarding this . Does the Control point refer to the Control point characteristics of DFU service on the target?

 Yes you've understood it correctly. It is referring to the characteristic which will be present on the DFU target.

As mentioned  in nRF5 SDK v17.0.0: DFU protocol (nordicsemi.com) , does the  opcode 06  means select command , and what does 01 mention?

The Select request opcode is followed by the Object type, and it's a NRF_DFU_OBJ_TYPE_COMMAND type object when the value following the opcode is 0x1.

If anything is still unclear, let me know.

Best regards,

Vidar