MicroPython Forum (Archive)

Thanks guys

Oops, I figured out the issue, user error! The object after the last comma is being assigned to the 'b' variable, which make sense based on how the line would tokenised and parsed by the interpreter. The correct implementation should be: >>> a,b = u.split('^') if ('^' in u) else (u,'') This returns ...

I'm a bit confused why the behaviour of the split statement is different between two use cases, and wondered what I may have overlooked? This works the way I'd expect it to: >>> u = 'm/s^2' >>> if '^' in u: a, b = u.split('^') >>> a 'm/s' >>> b '2' Now I tried to simplify this into a single statemen...

Thank you, your reply helped me see where I was going wrong. I was using a comparison branch instruction instead of bl, so the link register wasn't being stored at the point where I branched off. For anyone else stumbling upon this post with the same issue, to resolve this: I was originally using th...

I tried adding some random add and sub instructions between the pop({lr}) and the bx(lr) but unfortunately, this didn't make a difference. The Traceback doesn't tell me what line it failed on (reports the line where the function is called), so I only worked out it was that line by commenting out the...

Hi, not sure what I'm doing wrong here, but I've been trying to use the inline assembler to process data coming in at a high rate. I have some very basic knowledge of assembly having written a few assembly functions to speed up timing-critical sections of C-Code before on embedded platforms, but I w...

Ah ok, not a problem, thanks for the info @jimmo

In CPython, there is a class 'magic' method '__index__()' which allows the object to be used in slice notation: class Screen_Object(object): def __init__(x_pos, y_pos, index) self.x = x_pos self.y = y_pos self.screen_list_index = index def draw_object(self): #draw instructions def __index__(self): r...

Thank you for both your replies @pythoncoder and @jimmo, it looks like a bytearray is going to be the best option. I I see my mistake with the memory view object and using the 'print' function (thanks @jimmo), when using the method suggested by @pythoncoder it worked as expected. However, the memory...

Hi all, I am working with CAN-Bus Data coming in at over 100hz (in bursts) and need to store all the messages as quickly as possible so that the next message can be read from the CAN Chip Buffer. But which way is the quickest way to store this data in micropython? For those who haven't worked with C...