Edukit ATECC608B & AWS IOT & UiFlow

[ajb2k3]

@felmue Sorry, you need to import unit
Then import units then from units import _ID

also the code is

import units
import unit
from units import _ID
ID_0 = unit.get(unit.ID, (21,22))

however you can also use:

import units
import unit
from units import _ID
ATECC = unit.get(unit.ID, (21,22))

I don't know why both unit and units (with an S) must be called but they both do.

[felmue]

Hello @ajb2k3

thank you again. I tried both your code sequences - still no luck. M5Core2 still reboots after the last command.

Which UIFlow firmware version is running on your M5Core2?

Thanks
Felix

[ajb2k3]

@felmue ok, its been working all day and now crashing
1.10.2

OK if you make 1 single mistake, you to to disconnect and power down the Core2 to empty the memory

this works.

[felmue]

Hello @ajb2k3

at this point I think whether the commands succeed or result in a crash depends on the amount of free memory.
With a freshly rebooted M5Core2 the following commands (sometimes) can be executed w/o crash.

>>> import unit
>>> ID_0 = unit.get(unit.ID, (21,22))
>>> print(ID_0.wakeup())
True
>>> print(ID_0.readConfigZone())
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "units/_ID.py", line 186, in readConfigZone
  File "units/_ID.py", line 363, in read
  File "units/_ID.py", line 377, in read_output
  File "units/_ID.py", line 161, in idle_mode
  File "i2c_bus.py", line 100, in write_list
OSError: I2C bus error (110)
>>> print(ID_0.readConfigZone())
True
>>> print(ID_0.revisionNumber)
bytearray(b'\x00\x00`\x03')

Note: The commands need to be executed manually one by one.
Note: I don't need the import units nor the from units import _ID commands.

Thanks
Felix

[ajb2k3]

@felmue said in Edukit ATECC608B & AWS IOT & UiFlow:

Hello @ajb2k3

at this point I think whether the commands succeed or result in a crash depends on the amount of free memory.
With a freshly rebooted M5Core2 the following commands (sometimes) can be executed w/o crash.

>>> import unit
>>> ID_0 = unit.get(unit.ID, (21,22))
>>> print(ID_0.wakeup())
True
>>> print(ID_0.readConfigZone())
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "units/_ID.py", line 186, in readConfigZone
  File "units/_ID.py", line 363, in read
  File "units/_ID.py", line 377, in read_output
  File "units/_ID.py", line 161, in idle_mode
  File "i2c_bus.py", line 100, in write_list
OSError: I2C bus error (110)
>>> print(ID_0.readConfigZone())
True
>>> print(ID_0.revisionNumber)
bytearray(b'\x00\x00`\x03')

Note: The commands need to be executed manually one by one.
Note: I don't need the import units nor the from units import _ID commands.

Thanks
Felix
Agreed, once the error occurs then memory gets filled requiring hard reset.
You didn’t need unit or the from? I will try again later.
I have spent all weekend writing up the atecc for my av2 book including logging the MP modules. I’ll try without those two line tonight.

[ajb2k3]

The issue of found was that the basic unit functions are in the unit module with unit.ID being empty but the ATecc function are all in units._ID

[ajb2k3]

@felmue try adding the following before defining ID_0

From esp import gc
gc.collect.

This should help clean up some memory.

Nope that was wrong. the min code I can get running is

import unit
import units
from units import _ID
import gc
ATECC = unit.get(unit.ID, (21,22))
gc.collect()

Oh cool, I got import units._ID to work.

[ajb2k3]

@gabrielgc75 @felmue I now present to you the configuration loaded from the ATECC608b in my Core2 AWS

[felmue]

Hello @ajb2k3

thank you. I've tried to add the gc.collect() command. The result is still not 100% persistent. From time to time I still get a crash.

Thanks
Felix

[ajb2k3]

@felmue thanks for letting me know. It’s been stable for the testing but I’m yet to move beyond. I tried looking at provisioning for vets and codes but my brain is not taking it in hence the low level MP stuff.

I’m sure there will s an issue with MP but I don’t deal directly and not getting feedback from @m5stack or @IAMLIUBO