MicroPython Forum (Archive)

One thing to watch out for when comparing FRAM with SPI Flash is that with FRAM, reads are destructive, and with Flash there's almost unlimited reads but write/erase cycles are limited. The limits may be well beyond the lifetime of your app, but worth a quick investigation.

OK so, I have figured out why now. In my case-sensitive.dmg "on the metal" esp-open-sdk, I was bumping the VENDOR_SDK from 2.1.0 to 2.2.1 However... In >= 2.2.0, ets_delay_us() was updated to use a uint32_t! ESP8266_NONOS_SDK-2.1.0 /include/osapi.h void ets_delay_us(uint16_t us); ESP8266_NONOS_SDK-2...

Interesting... When I make using docker , it needs to be void ets_delay_us(uint16_t us); . As it is currently in the repo: https://github.com/micropython/micropython/blob/master/ports/esp8266/etshal.h#L9 cd ports/esp8266 docker run --rm -v $HOME:$HOME -u $UID -w $PWD larsks/esp-open-sdk make When I ...

Have you seen Dave Hyland's version?
His also works with the common "I2C backpack" (PCF8574), Adafruit's backpack (MCP23008), as well as 4 and 8-bit GPIO:
https://github.com/dhylands/python_lcd

ie. to avoid the TypeError, wrap your value in a bytearray: # change io.write_gpio(5) # to io.write_gpio(bytearray([5])) The OLAT register address is 0x0A, but when the port pin is in output mode (pin's IODIR bit =0), you write to the GPIO register instead and it internally updates the OLAT register...

Here's how you draw some random colours. >>> import random >>> for i in range(400): >>> display.write(None, bytearray([random.getrandbits(8)])) You use display.write(command=None, data=your-bytes) to send pixel data to the display. To understand what it is doing, try writing the same 2 bytes, hundre...

Added issue on Github: https://github.com/micropython/micropython/issues/6359

Quick Fix ™ for 16MB ESP8266 * Download and unzip: https://github.com/espressif/ESP8266_NONOS_SDK/archive/v2.2.1.zip * Grab the /bin/esp_init_data_default_v08.bin * make clean / make / make deploy * Write the esp_init_data_default_v08.bin: esptool.py --port /dev/tty.SLAB_USBtoUART --baud 460800 writ...

Tried flashing latest MicroPython to my 4M D1 mini (with SDK 2.2.1). Worked fine. LINK build-GENERIC/firmware.elf text data bss dec hex filename 616260 1020 66504 683784 a6f08 build-GENERIC/firmware.elf Create build-GENERIC/firmware-combined.bin esptool.py v2.8 Creating image for ESP8266... flash 33...

Output of make deploy on 16MB D1 mini pro: make PORT=/dev/tty.SLAB_USBtoUART deploy ... LINK build-GENERIC/firmware.elf text data bss dec hex filename 616260 1020 66504 683784 a6f08 build-GENERIC/firmware.elf Create build-GENERIC/firmware-combined.bin esptool.py v2.8 Creating image for ESP8266... fl...