debugprobe.uf2 version 2.2.3 identifying as 2.0.0

[dirkx]

After installing the most recent 2.2.3 (sha256:149e31fd06288a05fd2c00c1ea65acb6dd30b833b2b3e816ef6cc4d5c776d9ae) - I noticed that it identifies itself as 2.0.0:

     sudo openocd -f interface/cmsis-dap.cfg -f target/rp2350.cfg -c "adapter speed 5000" -c "program blink.elf verify reset exit"
     Open On-Chip Debugger 0.12.0+dev-g5855e5c (2025-09-03-13:57)
     ...
     Info : Using CMSIS-DAPv2 interface with VID:PID=0x2e8a:0x000c, serial=E6647C740388422C
Info : CMSIS-DAP: SWD supported
Info : CMSIS-DAP: Atomic commands supported
Info : CMSIS-DAP: Test domain timer supported
Info : CMSIS-DAP: FW Version = 2.0.0
Info : CMSIS-DAP: Interface Initialised (SWD)
Info : SWCLK/TCK = 0 SWDIO/TMS = 0 TDI = 0 TDO = 0 nTRST = 0 nRESET = 0
Info : CMSIS-DAP: Interface ready
Info : clock speed 5000 kHz
Info : SWD DPIDR 0x10212927
....

Which a grep in the code seems to confirm:

   curl .... https://github.com/raspberrypi/debugprobe/releases/download/debugprobe-v2.2.3/debugprobe.uf2
    strings ~/Downloads/debugprobe.uf2| grep 2.0.0
    2.0.0
    sha256 ~/Downloads/debugprobe.uf2 
    SHA256 (/Users/dirkx/Downloads/debugprobe.uf2) = 149e31fd06288a05fd2c00c1ea65acb6dd30b833b2b3e816ef6cc4d5c776d9ae

Is that to be expected ?

[P33M]

There's an unfortunate collision between the CMSIS-DAP firmware level (2.0.0) and debugprobe release number. The two are unrelated.

The bcdDevice field of the USB device descriptor reflects the debugprobe firmware version.

 $ sudo lsusb -v -d 2e8a: | head -n 18

Bus 003 Device 002: ID 2e8a:000c Raspberry Pi Debugprobe on Pico (CMSIS-DAP)
Negotiated speed: Full Speed (12Mbps)
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.10
  bDeviceClass            0 [unknown]
  bDeviceSubClass         0 [unknown]
  bDeviceProtocol         0
  bMaxPacketSize0        64
  idVendor           0x2e8a Raspberry Pi
  idProduct          0x000c Debugprobe on Pico (CMSIS-DAP)
  bcdDevice            2.23
  iManufacturer           1 Raspberry Pi
  iProduct                2 Debugprobe on Pico (CMSIS-DAP)
  iSerial                 3 E6616407E39A8B2C
  bNumConfigurations      1

[dirkx]

Thanks -- that works splendidly here. So in short - the protocol does not allow for the firmware version it self to be conveyed - just the protocol level ? Correct ?

dirkx@cheesegrater ~ % sudo lsusb -v -d 2e8a: | head -n 18
Password:

Bus 008 Device 010: ID 2e8a:000c  
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.10
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x2e8a 
  idProduct          0x000c 
  bcdDevice            2.23
  iManufacturer           1 Raspberry Pi
  iProduct                2 Debug Probe (CMSIS-DAP)
  iSerial                 3 E6647C740388422C
  bNumConfigurations      1
  Configuration Descriptor:

[P33M]

Yes.

[dirkx]

Thanks - closing this ticket - as this is more of a documentation thing.

[lurch]

as this is more of a documentation thing.

raspberrypi/documentation#4171 🙂