gopro
Extra data returned by BLE Get Hardware Info (0x3c) command response (after MAC which is the last documented field)
Component What is the bug in?
- Specs (BLE , HTTP)
Describe the bug The response to the 'Get Hardware Info' command includes additional data no documented in the specs.
example response: 20:60:3c:00:04:00:00:00:37:0b:48:45:52:4f:39:20:42:6c:61:63: <- initial response 80:6b:04:30:78:30:35:0f:48:44:39:2e:30:31:2e:30:31:2e:36:30: <- continuation 81:2e:30:30:0e:43:33:34:34:31:33:32:34:38:30:34:37:39:32:0b: <- continuation 82:48:45:52:4f:39:20:42:6c:61:63:6b:0c:64:36:33:32:36:30:62: <- continuation 83:35:35:31:39:35:01:00:01:01:01:00:07:5b:22:62:6c:65:22:5d: <- continuation (extra starts here) 84:01:01: <- continuation (extra continues here)
This decodes as: commandSentSuccessfully:0 modelNumber: 55 lengthOfModelId: 11 modelId: "HERO9 Black" boardType:"0x05" firmwareVersion:"HD9.01.01.60.00" serialNumber: "C3441324804792" ssid: "HERO9 Black" Mac: "d63260b55195"
The final sequence "01:00:01:01:01:00:07:5b:22:62:6c:65:22:5d:84:01:01" are all additional bytes not included in the documentation: https://gopro.github.io/OpenGoPro/ble_2_0#get-hardware-info
Any idea how these bytes should be interpreted?
To Reproduce Steps to reproduce the behavior: Send BLE command data [0x01, 0x3c] to GP-0072 and await the response packets on GP-0073
Expected behavior I expected the response data for Get Hardware Info to end with the MAC address
Screenshots If applicable, add screenshots to help explain your problem.
Hardware
- Camera: Hero9,.
- Smartphone iPhone 12
Hello. I am able to reproduce this even on the latest Hero 12 firmware. This extra data should not be getting sent from the camera so I will open a bug to fix this internally.
For now, you can safely ignore the extra data.
It turns out there is no plan to change the behavior here. Instead I have updated the documentation to note these "reserved" bytes.