Search found 33 matches

by Meekdai
Mon Apr 29, 2019 2:51 am
Forum: General Discussion and Questions
Topic: 3d printer firmware based on pyboard
Replies: 13
Views: 495

Re: 3d printer firmware based on pyboard

The other option is to use a chip such as the STM L6470. As I understand it you pass the chip a target and it handles microstepping and step rate limitations automatically. I read the L6470 datasheet. It is similar to the TMC5130 I am currently using. It is very convenient to control a single stepp...
by Meekdai
Mon Apr 29, 2019 1:10 am
Forum: General Discussion and Questions
Topic: 3d printer firmware based on pyboard
Replies: 13
Views: 495

Re: 3d printer firmware based on pyboard

@OutoftheBOTS This is really a good idea. But I don't know how to create function in C, I just add the .py file to '../micropython/ports/stm32/modules' and make the micropython firmware. Is there any documentation I missed?
by Meekdai
Sun Apr 28, 2019 7:04 am
Forum: General Discussion and Questions
Topic: 3d printer firmware based on pyboard
Replies: 13
Views: 495

Re: 3d printer firmware based on pyboard

Many years ago I transplant the GRBL code to STM32F1 and it works well.
I think micropython can do the same.
by Meekdai
Fri Apr 26, 2019 12:50 am
Forum: Hardware Projects
Topic: How to expand the size of spiflash?
Replies: 9
Views: 331

Re: How to expand the size of spiflash?

I use the W25Q128 configuration on PYBV10 as follows´╝Ü // use external SPI flash for storage #define MICROPY_HW_ENABLE_INTERNAL_FLASH_STORAGE (0) #define MICROPY_HW_SPIFLASH_SIZE_BITS (128 * 1024 * 1024) #define MICROPY_HW_SPIFLASH_CS (pin_A2) #define MICROPY_HW_SPIFLASH_SCK (pin_A5) #define MICROPY_...
by Meekdai
Tue Mar 12, 2019 2:33 am
Forum: Newsletter archive
Topic: MicroPython Newsletter Issue 6
Replies: 8
Views: 5053

Re: MicroPython Newsletter Issue 6

That's great. Will it support STM32H7 later?
by Meekdai
Mon Mar 11, 2019 7:06 am
Forum: Development of MicroPython
Topic: No genhdr/pins.h to make mboot with MBOOT_BOOTPIN_PIN
Replies: 8
Views: 266

Re: No genhdr/pins.h to make mboot with MBOOT_BOOTPIN_PIN

Hi wghe, I am trying to use mboot and I am having the same problem when using dfu-util. Cannot open Dfu device 0483:df11 No DFU capable USB device available I use https://zadig.akeo.ie/ to change the driver, then it works. Hi Dave, The mboot on my PYBV10 board works fine, but the micropython firmwar...
by Meekdai
Thu Jan 03, 2019 11:29 am
Forum: Other Boards
Topic: [NUCLEO_H743ZI] support for ETH RMII peripheral
Replies: 0
Views: 151

[NUCLEO_H743ZI] support for ETH RMII peripheral

Does anyone successfully use ETH RMII peripheral on NUCLEO_H743ZI?
https://github.com/micropython/micropython/pull/3808
by Meekdai
Mon Dec 10, 2018 1:23 am
Forum: MicroPython pyboard
Topic: Pyboard Node for I2S and I2C
Replies: 3
Views: 328

Re: Pyboard Node for I2S and I2C

The following document may be useful to you.
http://docs.micropython.org/en/latest/l ... e.I2C.html
by Meekdai
Tue Dec 04, 2018 6:53 am
Forum: MicroPython pyboard
Topic: Is there a way to increase RAM?
Replies: 7
Views: 509

Re: Is there a way to increase RAM?

Because I used websocket on pyboard.

Code: Select all

#define MICROPY_PY_LWIP (1)
#define MICROPY_PY_WEBSOCKET (1)
Lwip maybe used part of the memory.

It seems to be a bit difficult to use CCM data RAM.
viewtopic.php?f=2&t=427&hilit=CCM+data+RAM
by Meekdai
Tue Dec 04, 2018 2:52 am
Forum: MicroPython pyboard
Topic: Is there a way to increase RAM?
Replies: 7
Views: 509

Re: Is there a way to increase RAM?

Is there a way to use the 64K that was originally used as a file system cache ? I can use the SD card to do file system storage.