hw.device-type: Modify bluechiptechnology-tm3

[chrisruk]

Change-type: patch

I found https://github.com/balena-io/contracts/blob/master/contracts/hw.device-type/rockpi-4b-rk3399/contract.json and https://docs.balena.io/learn/getting-started/rockpi-4b-rk3399/nodejs/ which appear to have the same installation process

Which I've adapted below -

• Wait for writing of balenaOS to complete.
• Remove the SD card from the host machine.
• Insert the freshly flashed SD card into the TM3
• Warning! This will also completely erase internal storage medium, so please make a backup first.
• Connect power to the TM3
• Wait for the TM3 to finish flashing and shutdown. Please wait until screen and Ethernet green LED are off.
• Remove the SD card from the TM3.
• Remove and re-connect power to the TM3 to boot the device.

I wasn't quite sure how the 'partials' maps to the above text though.

[chrisruk]

I'm just wondering also if I should change

    "storage": {
      "internal": true
    },
    "media": {
      "defaultBoot": "sdcard",
      "altBoot": ["internal"]
    },

To:

    "storage": {
      "internal": true
    },
    "media": {
      "defaultBoot": "internal",
      "altBoot": ["sdcard"]
    },

Originally I thought the first syntax was correct, as the TM3 boots from an SD card if one is inserted and otherwise boots from eMMC.

But now I'm thinking because we're using a 'flashing' image, we should use the latter syntax, as Balena will generally be run from eMMC?

[floion]

I'm just wondering also if I should change

    "storage": {
      "internal": true
    },
    "media": {
      "defaultBoot": "sdcard",
      "altBoot": ["internal"]
    },

To:

    "storage": {
      "internal": true
    },
    "media": {
      "defaultBoot": "internal",
      "altBoot": ["sdcard"]
    },

Originally I thought the first syntax was correct, as the TM3 boots from an SD card if one is inserted and otherwise boots from eMMC.

But now I'm thinking because we're using a 'flashing' image, we should use the latter syntax, as Balena will generally be run from eMMC?

Hi, yes, please make that change also