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This article mainly introduces the relevant knowledge of "how MicroPython drives external Flash". The editor shows you the operation process through an actual case. The operation method is simple, fast and practical. I hope this article "how MicroPython drives external Flash" can help you solve the problem.

MicroPython has added an important update to drive external Flash through SPI.

The STM32L476DISC development board as the first example, you can use the on-board N25Q128A13EF840E extension file system, it is expected that other STM32 official development board Flash function will be added soon.

Here are some changes in the definition of the STM32L476DISC development board, which you can compare.

# include "py/mphal.h" # include "genhdr/pins.h" void STM32L476DISC_board_early_init (void) {/ / set SPI flash WP and HOLD pins high mp_hal_pin_output (& pin_E14); mp_hal_pin_output (& pin_E15); mp_hal_pin_write (& pin_E14, 1); mp_hal_pin_write (& pin_E15, 1) } / / use external SPI flash for storage#define MICROPY_HW_SPIFLASH_SIZE_BITS (128x 1024 * 1024) # define MICROPY_HW_SPIFLASH_CS (pin_E11) # define MICROPY_HW_SPIFLASH_SCK (pin_E10) # define MICROPY_HW_SPIFLASH_MOSI (pin_E12) # define MICROPY_HW_SPIFLASH_MISO (pin_E13) on "how MicroPython drives external Flash", thank you for reading. If you want to know more about the industry, you can follow the industry information channel. The editor will update different knowledge points for you every day.

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