MicroPython Forum (Archive)

Firas_Baccouri wrote: ↑

Wed Jun 22, 2022 2:38 pm

But the question still is there any possibility to use some array in a C module so you can than use it by the python code ?

Yes you can construct any Python object (e.g. array, or bytearray, or bytes) and return that from your C module.

PM-TPI wrote: ↑

Wed Jun 22, 2022 8:28 pm

Can mpremote send a ctrl-c prior to uploading files?

Yes, it does. Is it not working?

etolocka wrote: ↑

Wed Jun 22, 2022 8:37 pm

What is the most appropriate firmware to program a RP2040 Zero board?

Ideally a board definition should be written, but yeah like you say, any firmware for a board with 2MiB flash will work, including the two you mentioned.

So I added "boards/sdkconfig.240mhz" to "mpconfigboard.cmake". Unfortunatly the firmware is still 160mhz. How to fix this? This works on the UM_TINYPICO - just checked here. Did you do a `make clean` after changing mpconfigboard.cmake? everything loaded before boot.py is worked on with 160mhz. Ther...

1) in mpy version v.19.1 there is less memory available, software that runs on version 1.18 from failed memory allocation on version 1.19.1. I can't see this in your screenshots... both have 128000 total and almost identical free (within ~100 bytes). Can you post the error you're seeing? 2) In the ...

Firas_Baccouri wrote: ↑

Wed Jun 22, 2022 6:54 am

I am wondering if there are a way to use the unsigned integer , or is there a solution to avoid that overflow besides using negative number .

This has been proposed in https://github.com/micropython/micropython/pull/8089

But if you just want the full 32 bits then cast to uint32_t

Is there a way to have direct access to the UART ring buffers from assembler? In theory, yes, you could. When you call an @asm_thumb method, each argument is placed in a register, via the convert_obj_for_inline_asm function (see py/objfun.c). So what you'll get in (say) r0 is the address of a machi...

I really need to know how to deal with that because I do need to write the module in C . When you write a function that is exposed to Python, the only argument types supported are mp_obj_t (i.e. Python objects). The key is that Python only has "arbritrary precision signed integer" it has no concept...

connecting to the host function of ch375 The ch375 has built-in USB MSC support, so what you would need to do is write a block device implementation (in Python or C) that talks to the SPI interface on the ch375. This block device could be mounted using the built-in filesystem drivers (FAT, LFS) usi...

I was able to put the mpy file in the same directory as the mp executable, but that doesn't work with my application. What do you mean by "doesn't work"... having the file in the same directory isn't what you want (does sys.path help?) or it just flat out doesn't load? As you're running on x86/x64 ...