Partitions

FireFly Controller uses a custom board, typically using the ESP32 WROVER-E Module featuring 16MB flash storage (ESP32-WROVER-E-N16R8).

The custom partition table will is defined as:

Name	Type	SubType	Offset	Size (Hex)	Size (Human)	Flags
nvs	data	nvs	0x9000	0x5000	20KB
otadata	data	ota	0xe000	0x2000	8KB
app0	app	ota_0	0x10000	0x640000	6.25MB
app1	app	ota_1	0x650000	0x640000	6.25MB
config	data	spiffs	0xC90000	0x80000	512KB
www	data	spiffs	0xD10000	0x2E0000	2.875MB
coredump	data	coredump	0xFF0000	0x10000	64KB

Note: The spiffs SubType label is an ESP32 toolchain partition type identifier. The config and www partitions both use the LittleFS filesystem, not SPIFFS.

config partition

Data stored within this partition contains configuration data for the controller itself, such as:

• OTA Update Service configuration
• Certificates
• I/O and action configuration

It should only be formatted and flashed by the Hardware Registration and Configuration application.

🚫 It is ineligible to receive OTA updates via the OTA Update Service, nor via a forced OTA update.

The partition size is 512KB.

www partition

Files stored on this partition are used for web user interface or other blobs of data.

✅ It is eligible for OTA updates, and therefore data stored on this partition will be lost during an OTA update of the partition.

The partition size is 2.875MB.