Updater for Sonoff, flash size limitation. about emonesp HOT 6 CLOSED

@glynhudson @TrystanLea @jeremypoulter

I took emonesp/src timer branch and copied it to ESP8266_WiFi_v2.x/src folder and hit compile:

DATA: [===== ] 53.7% (used 43956 bytes from 81920 bytes)
PROGRAM: [= ] 10.5% (used 438603 bytes from 4194304 bytes)

Looks promising so far, PROGRAM is 438603 bytes, below 50%... I'll try get it working now.

from emonesp.

The Sonoff makes 2 firmware, sonoff-minimal and other sonoff-*
Sonoff-minimal is what is needed to use before update with other greater firmware.
And doesn’t use spiffs.

from emonesp.

I can't find the minimal you refer to, is it a pio env?

from emonesp.

On realeses, you can find the different .bin for the different purposes.

sonoff-minimal.bin = The Minimal version allows intermediate OTA uploads to support larger versions and does NOT change any persistent parameter. This version should NOT be used for initial installation.

When compiling from sources,there is a VAR for compiling that .bin .
That firmware handles the minimal functions to update it over web (at least)

from emonesp.

I can find what look like 'minimal' memory addresses in firmware.map, but can't find the VAR you mention. Which file is it in?

from emonesp.

my_user_config.h
Line 435: //#define FIRMWARE_MINIMAL // Create sonoff-minimal as intermediate firmware for OTA-MAGIC

Uncommenting that line and compiling, generates the minimal firmware.

from emonesp.