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btsimonh edited this page Feb 28, 2022 · 4 revisions

This page outlines the flash layouts of the various devices supported by OpenBK7231T_App

BK7231 (all except N?)

'Official' partitions: (from BkDriverFlash.c)

"Bootloader" - 0x00000000 - 0x11000, //68KB
  Last 0x1000 is some kind of application header written by the bootloader after OTA
"Application" - 0x11000 - 0x132000,//1156KB
"ota" - 0x132000 - 0x1C8000, //600KB
  This area can be shared with the littleFS filesystem when OTA not in progress.  FS can be backed up and restored if using the webapp upgrade.
"RF Firmware" - 0x1e0000 - 0x1e1000 // 4KB - don't lose this one - calibration data?
"NET info" - 0x1e1000 - 0x1e2000,// for net related info - we use this for configuration

Areas not listed in Beken partition table:

"Unknown net stuff" - 0x1e2000 - 0x1e3000 // 4kbytes - Beken SDK writes SSID here with other stuff? 'fast reconnect?'
"flash Vars" - ours - 0x1e3000 - 0x1e5000 // 8kbytes - Flash Variables area (boot count, etc.)
  the address is set as ('End of Net Info' + 0x1000) in flash_vars.c

There are Tuya logs later in flash, plus info in the last sector or two which is unknown.