rst:0x7 (TG0WDT_SYS_RESET) and rst:0x8 (TG1WDT_SYS_RESET)
What it looks like
rst:0x7 (TG0WDT_SYS_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT) rst:0x8 (TG1WDT_SYS_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
What it means
A hardware watchdog timer reset the whole chip because the code stopped responding. TG0 is usually the task watchdog side, TG1 the interrupt watchdog. Unlike a panic, there may be no crash message before it.
Likely causes
- A task or loop that never yields, so the watchdog is never fed.
- Interrupts blocked for too long.
- A deadlock: two tasks each waiting for a lock the other holds.
How to fix it
- Add delay(1) or yield() to long loops and timeouts to wait loops.
- Keep interrupt handlers short and never block inside them.
- Take locks in the same order everywhere to avoid deadlocks.
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