MicroPython Forum (Archive)

dhylands wrote: ↑

Thu Jun 27, 2019 9:01 pm

No - this extends the flash, and not the RAM.

I don't understand the difference between the two QSPI FLASH on SF2. I thought 'code execution capabilities'='Memory mapping'. I find that ESP32 supports external SPI RAM.

2MByte external flash with code execution capabilities (extends internal flash)

I want to ask, is this the same as the internal RAM of the chip? Can pyboard(STM32F405) increase RAM (Memory mapping) in this way? Thanks.

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...

@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?

Many years ago I transplant the GRBL code to STM32F1 and it works well.
I think micropython can do the same.

I use the W25Q128 configuration on PYBV10 as follows： // 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_...

That's great. Will it support STM32H7 later?

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...

Does anyone successfully use ETH RMII peripheral on NUCLEO_H743ZI?
https://github.com/micropython/micropython/pull/3808

The following document may be useful to you.
http://docs.micropython.org/en/latest/l ... e.I2C.html