Bootloop detection and failsafe mode#48
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…mings, early exit)
…ass it as <unsigned>.
…wn module. The device is mostly located in the fuse box without any connected computer. The serial of the device is used to communicate with the electric meter and dealing with baudrates of 300 or 9600 which disturbs the serial exception dump. Also working with low baudrates can trigger the hardware watchdog while dumping the stack trace. So: We capture exception information in our own module and write them to the filesystem. Wrapping the __wrap_system_restart_local() function using '-Wl,--wrap=__wrap_system_restart_local' is not possible as the system_restart_local() function is already wrapped within the original framework. We replace the original core_esp8266_postmortem.cpp while compiling this project using 'pre:pio-scripts/replace_freamwork_core_esp8266_postmortem.py'
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…loop_failsafe Cherrypick kupferfox bootloop failsafe (original PR: #48)
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Es gibt nun einen Failsafe-Mode, in dem eine Firmware aufgeladen werden kann.
Folgende Logik:
Die Implementierung ist komplett abgekapselt von allen Funktionen. Also ein wirkliches Failsafe.
In Setup und Loop jeweils nur 1 Call der bei Normalbetrieb ins leere Läuft. Quasi zero overhead (3x if-check).