Search found 149 matches

by v923z
Sun Aug 02, 2020 6:49 pm
Forum: Development of MicroPython
Topic: compiling native modules (ulab)
Replies: 6
Views: 345

Re: compiling native modules (ulab)

.mpy disadvantages : - longer import time to load the .mpy file from local file system; - more RAM usage during and after the import, but many boards have a lot of RAM (Pyboard D, ESP32 PSRAM, MAix BiT with K210, OpenMV M7/H7, Teensy 4.x, etc); I would like to have something that works on all platf...
by v923z
Fri Jul 31, 2020 2:24 pm
Forum: Development of MicroPython
Topic: compiling native modules (ulab)
Replies: 6
Views: 345

Re: compiling native modules (ulab)

Jim, many thanks for your very exhaustive reply! Sometimes I have the feeling that the forum is a one-man show, and refrain from asking a question. and even worse, I am not sure I could decipher all the limitations properly. Yes, unfortunately this is quite a complicated feature and getting to the b...
by v923z
Thu Jul 30, 2020 4:27 pm
Forum: Development of MicroPython
Topic: compiling native modules (ulab)
Replies: 6
Views: 345

compiling native modules (ulab)

Hi all, I have recently seen that it is possible to turn .c code into .mpy files, so that the output can be loaded as a standard module without having to re-compile the firmware. This sounds fantastic, except that there are limitations, and even worse, I am not sure I could decipher all the limitati...
by v923z
Mon Jul 27, 2020 5:44 pm
Forum: Development of MicroPython
Topic: ulab, or what you will - numpy on bare metal
Replies: 104
Views: 11285

Re: ulab, or what you will - numpy on bare metal

25 new MicroPython firmwares with ulab v0.54 (released in July 24 2020) were published : - 11 with combinations of sp, dp, sp & _thread, dp & _thread, sp & network, dp & network for Pyboard v1.1/Lite v1.0 ; - 12 with combinations of sp, dp, sp & _thread, dp & _thread for Pyboard D SF2/SF3/SF6 ; - 2...
by v923z
Sun Jul 26, 2020 9:20 pm
Forum: ESP8266 boards
Topic: ulab for ESP8266
Replies: 19
Views: 636

Re: ulab for ESP8266

Well, we can agree to disagree. You can produce firmware with ulab, but that might not include threading, or SD card support etc. I see your point about the inexperience of the users, but compiled firmware will always be out of sync with either micropython, or third-party libraries. Yes, I agree th...
by v923z
Sun Jul 26, 2020 8:49 pm
Forum: ESP8266 boards
Topic: ulab for ESP8266
Replies: 19
Views: 636

Re: ulab for ESP8266

I think the cleanest way is to compile the firmware yourself, if you need ulab. I disagree. The large majority of MicroPython users don't know/have time/interest to compile firmware. Part of them have interest in using ulab. Well, we can agree to disagree. You can produce firmware with ulab, but th...
by v923z
Sun Jul 26, 2020 2:42 pm
Forum: ESP8266 boards
Topic: ulab for ESP8266
Replies: 19
Views: 636

Re: ulab for ESP8266

I see. Has the ESP8266 double or float implementation? No, MicroPython for ESP8266 is fixed with single precision for float point numbers (SP/FP32). This sort of makes sense now: for each FFT, there are four arrays: real and imaginary inputs, and real and imaginary outputs. So, with 2048 points, yo...
by v923z
Sat Jul 25, 2020 8:22 pm
Forum: ESP8266 boards
Topic: ulab for ESP8266
Replies: 19
Views: 636

Re: ulab for ESP8266

Maybe an option would be : - to implement all ulab functions with "ICACHE_FLASH_ATTR" decorator; - detect when not building for ESP8266, then "ICACHE_FLASH_ATTR" decorator could be set as empty. I am not sure it is an elegant solution. What happens, if some other platform requires other kind of dec...
by v923z
Sat Jul 25, 2020 2:30 pm
Forum: ESP8266 boards
Topic: ulab for ESP8266
Replies: 19
Views: 636

Re: ulab for ESP8266

I am not against posting the instructions on https://github.com/v923z/micropython-ulab/. Raise an issue, if you want to do that! If the PR#6284 is merged, then the instructions to compile MicroPython for ESP8266 + ulab will be very simple : use ulab >= 0.54.0 & MicroPython newer than 'some date'. T...
by v923z
Fri Jul 24, 2020 2:16 pm
Forum: ESP8266 boards
Topic: ulab for ESP8266
Replies: 19
Views: 636

Re: ulab for ESP8266

Solved the issue (3), succeeded building MicroPython firmware with ulab v0.54.0 for ESP8266 ! Yeah, the new version of ulab, release some hours ago . I'll later (time to sleep...) describe the needed changes in '...esp8266/Makefile' and '...esp8266/mpconfigport.h', make a "README.md" in the reposit...