Feat flashmode for ESP8266 #13

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MrUnknownDE · 2026-04-05T17:51:36+02:00

MrUnknownDE commented

2026-04-05 17:51:36 +02:00

Originally created by @unlogisch04 on 1/11/2026

On Official Slime HW it is not possible to flash them just over USB when they are in a boot loop.
They are based from ESP8266.
~~Left ESP32* out of loop as they either have a HW solution to put them into Flash Mode or use USB JTag on the chip.~~
Target is, that there is a fail safe at begin of the program so it goes into flash mode if it reboots more than 3 times after a crash. For ESP32 it is directly after a crash. For HW with softpower solution (gorbits as example) the code in init has maybe to be changed, so a reboot with a button press is still possible.

Current Status is:

A safe mode shell
Boot Prompt with Infos from Flash
Small Serial command set:
- FRST - Factory Reset, cleans the config file and WiFi credentials (useful by crashes to wrong configs)
- SET FLASHMODE - Sets the tracker into flashmode does work on ESP8266 and ESP32-C3 )
- REBOOT - Reboots the tracker
Still not able to recover from updates that have been interrupted by power off at the wrong time

Tasks:

Needs to be checked if this constructor runs rly before all other constructors.
Testing with official Slimes
Testing that no breaks for ESP32 variants.
Lint

*Originally created by @unlogisch04 on 1/11/2026* On Official Slime HW it is not possible to flash them just over USB when they are in a boot loop. They are based from ESP8266. ~~Left ESP32* out of loop as they either have a HW solution to put them into Flash Mode or use USB JTag on the chip.~~ Target is, that there is a fail safe at begin of the program so it goes into flash mode if it reboots more than 3 times after a crash. For ESP32 it is directly after a crash. For HW with softpower solution (gorbits as example) the code in init has maybe to be changed, so a reboot with a button press is still possible. Current Status is: - A safe mode shell - Boot Prompt with Infos from Flash - Small Serial command set: - FRST - Factory Reset, cleans the config file and WiFi credentials (useful by crashes to wrong configs) - SET FLASHMODE - Sets the tracker into flashmode does work on ESP8266 and ESP32-C3 ) - REBOOT - Reboots the tracker - Still not able to recover from updates that have been interrupted by power off at the wrong time Tasks: - [x] Needs to be checked if this constructor runs rly before all other constructors. - [x] Testing with official Slimes - [x] Testing that no breaks for ESP32 variants. - [x] Lint

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Reference: github/SlimeVR-Tracker-ESP#13