meshtastic-firmware/bin/genpartitions.py

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1.2 KiB
Python
Executable File

#!/usr/bin/python2
# This is a layout for 4MB of flash
# Name, Type, SubType, Offset, Size, Flags
# nvs, data, nvs, 0x9000, 0x6000,
# otadata, data, ota, , 0x2000,
# app0, app, ota_0, , 0x1c0000,
# app1, app, ota_1, , 0x1c0000,
# spiffs, data, spiffs, , 0x06f000,
start = 0x9000
nvssys = 0x3000
nvsuser = 0x2000 # NOTE: ti seems total size of nvssys MUST be 0x5000 or device will bootloop
nvs = nvssys + nvsuser
ota = 0x2000
# app = 0x1c0000
spi = 128 * 1024
# treat sys part sizes + spiffs size as reserved, then calculate what appsize can be
reserved = start + nvs + ota + spi
maxsize = 0x400000 # 4MB
app = (maxsize - reserved) / 2
# total = start + nvs + ota + 2 * app + spi
nvskb = nvsuser / 1024
spikb = spi / 1024
appkb = app / 1024
table = """
# This is autogenerated by genpartions.py - change that tool instead!
# appsize={appkb} KB, spiffs={spikb} KB, usernvs={nvskb} KB
# Name, Type, SubType, Offset, Size, Flags
nvs, data, nvs, 0x{start:x}, 0x{nvs:x},
otadata, data, ota, , 0x{ota:x},
app0, app, ota_0, , 0x{app:x},
app1, app, ota_1, , 0x{app:x},
spiffs, data, spiffs, , 0x{spi:x} """.format(**locals())
print(table)