ESP32 Batch OTA Update System

Check for Updates

POST /api/check_update
Content-Type: application/json

{
  "uid": "device-unique-id",
  "master_version": "current-master-version",
  "slave_version": "current-slave-version"
}

Response Format (Success)

{
  "update_status": "11", // Example: Master & Slave needed
  "reason": "Update available via Batch 'DEFAULT'.", // Explains outcome
  "master_firmware_url": "http://server/api/firmware/download/master/",
  "slave_firmware_url": "http://server/api/firmware/slave/"
}

Response Format (No Update / Error)

{
  "update_status": "00",
  "reason": "Device up-to-date or update disabled..." // Or other reasons
}

Download Master Firmware

GET /api/firmware/download/master/

Get Slave Firmware Metadata

GET /api/firmware/slave//info

Get Slave Firmware Chunk

GET /api/firmware/slave//chunk/

Report Update Status

POST /api/update_status
Content-Type: application/json

{
  "uid": "device-unique-id",
  "device_type": "master",  // or "slave"
  "status": "SUCCESS",      // or "FAILED"
  "version": "version_after_update_attempt",
  // Optional fields the device *could* send:
  "release_id": 123, // ID of the firmware it attempted
  "batch_id": "DEFAULT" // Batch ID at time of attempt
}