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Miscellaneous Functions
machine.main(filename)
Set the
filename
of the main script to run after
boot.py
is finished. If this function is not
called then the default file
main.py
will be executed.
It only makes sense to call this function from within
boot.py
.
machine.rng()
Return a 24-bit software generated random number.
machine.unique_id()
Returns a byte string with a unique identifier of a board/SoC. It will vary from a board/SoC
instance to another, if underlying hardware allows. Length varies by hardware (so use
substring of a full value if you expect a short ID). In some MicroPython ports, ID corresponds
to the network MAC address.
Use
ubinascii.hexlify()
to convert the byte string to hexadecimal form for ease of
manipulation and use elsewhere.
machine.info()
Returns the high water mark of the stack associated with various system tasks, in words (1
word = 4 bytes on the ESP32). If the value is zero then the task has likely overflowed its
stack. If the value is close to zero then the task has come close to overflowing its stack.
Constants
Reset Causes
machine.PWRON_RESET machine.HARD_RESET machine.WDT_RESET
machine.DEEPSLEEP_RESET machine.SOFT_RESET machine.BROWN_OUT_RESET
Wake Reasons
machine.PWRON_WAKE machine.PIN_WAKE machine.RTC_WAKE machine.ULP_WAKE
Pin Wakeup Modes
5.2.1 machine
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