MicroPython Forum (Archive)

I successfully used the following to load a 32 bit word in to r5: data(2, 0x4d00) # ldr r5, [pc, #0] load r5 with data following the branch (0x4e00: ldr r6, [pc, #0]) b(HERE0) data(4, 0x1b8d72e4) # r5 = 0b00011011100011010111001011100100, the state table in 32 bits label(HERE0) This is the way viper...

You are right: I flashed the nightly build and now pin('LED') is possible even on RPI Pico! Nice.

Hey Scruss, Pin('LED') works for me on Teensy 4.1 and this name is revealed indeed if I look it up in Pin.board.__dict__.items() like posted above. In RPI Pico I don't find Pin.board or Pin.cpu (those nasty inconsistencies in different ports .., is there something similar at least?). So the only way...

Hello Jibun, I'm not sure I understood your question. Perhaps this is what you are looking for: from machine import Pin pin1 = Pin('A12', Pin.OUT) print(list((name for name, code in Pin.board.__dict__.items() if code == pin1))) # or print(list((name for name, code in Pin.cpu.__dict__.items() if code...

you could try: but I'm not sure this is "Future-safe".
It works here for RPi2040.

Thank you Scruss. Didn't know of this solution. It's nice but will not work in my case unfortunately, as the array is possibly very large indeed. I currently have: def array_dsize(arr): sizes = {'b': 0, 'B': 0, 'h':1, 'H':1, 'i':2, 'I':2, 'l':2, 'L':2, 'q':3, 'Q':3, 'f':2, 'd':3} baddr=bytes(array('...

Hello, I have an array like arr: from array import array arr = array('b', (2,3,4,0)) Now only having arr, how can I get the itemsize of arr, which in this case is 1? In Python 3.10 I would use arr.itemsize Is there another way than str(arr) and extracting the code form the string "array('b', [2, 3, ...

For the problem reported in https://forum.micropython.org/viewtopic.php?f=6&t=12721 I wrote a class that employs 3 PIO state machines to determine minimum, maximum, count and mean of a series of pulses on a pin. I used it to measure RPI2040 ISR latencies and reported there. As I am not using github ...

I have to correct my previous findings. My numbers and those by @TheSilverBullet are to a great extent artefacts. The functions used for stopping the PWM signal suppressed the PWM pulse by forcing it low for a brief time (~2-3 us) but then gave way to the original PWM pulse which was much longer (25...

Hello @TheSilverBullet, thank you for sharing code. Glad to find other inquiring minds I was trying to reproduce and improve :-) I constructed a PulseTimer class that has 2 period (=16 ns at 125 MHz) resolution. The idea is to use jmp(pin, LABEL) to get out of the loop with one instruction. The same...