MicroPython Forum (Archive)

So this ADC.read_uv(), it doesn't exist in 1.17 firmware. I tried 1.18. It's not there either. i wonder if this is just an issue with the document maybe copy-pasted from pyboard. The call class ADC(pin, *, atten) also doesn't work. It only takes 1 parameter. So under the current scenario, is there ...

I've wound up the voltage at the analog inputs of several ESP32s set to ATTN_11DB over the years. I found the max 4095 count is reached at around 3.13v on my Fluke87. So maybe the high and low ends of the voltage range doesn't go linear enough. What about the mid section like say 2V? Is 2V represen...

I read from here that there are several attenuation levels of the ADC: https://docs.micropython.org/en/latest/esp32/quickref.html#adc-analog-to-digital-conversion On the other hand, random nerd tutorials has a different set of ranges with the same attenuation levels: https://randomnerdtutorials.com/...

Thanks. I could just call machine.UART() again? There's no indication it would work or what would happen if it gets called again. So I did some experimentation with calling it and sending and receiving data and with gc. It seems to work fine as long as I call gc.collect() to release memory from the ...

I wish to adjust the timeout of an UART port I instantiated. I can't find anything in the reference:

https://docs.micropython.org/en/latest/ ... .UART.html

I can't just assign value to UART.timeout. That is not a member variable. So is there any way to make changes to the timeout? Thanks.

I have this simple test code that runs on PC Python just fine but produces error on MP: def test_local(): if not hasattr(test_local, "myVar"): test_local.myVar = 10 print(test_local.myVar) On PC: >>> test_local() 10 On MP (ESP32 port 1.17): >>> test_local() Traceback (most recent call last): File "<...

dhylands wrote: ↑

Thu Dec 02, 2021 1:51 am

I only use calander on the host (under CPython). And since the offset you're looking for is a constant that can't ever change you can just hard-code it into your micropython code. No need to use calendar to calculate it.

Right thanks. I really don't need the module, just the offset.

Thanks! I didn't know about the calendar module. It's not built-in, or in the stdlib or ecosys. Is it a 3rd-party contributed module for Python or MP? calendar comes with CPython. You can find the documentation here: https://docs.python.org/3/library/calendar.html The documentation for the time mod...

Thanks @davef!

I'll see if I can understand your code and incorporate into my script.

Curious, are those exception handling in import supposed to make your script run on both MP and Python (or another platform)?

The difference between the Micropython 2000 epoch and the unix 1970 is a constant. You can calculate that constant in CPython by using: import calendar epoch_1970 = (1970, 1, 1, 0, 0, 0, 0, 0) epoch_2000 = (2000, 1, 1, 0, 0, 0, 0, 0) time_offset = calendar.timegm(epoch_2000) - calendar.timegm(epoch...