MicroPython Forum (Archive)

GPIO used for wakeup must be deinit after wake up to be used as digital input/output again, something like this: if (rtc_gpio_is_valid_gpio(self->id)) rtc_gpio_deinit(self->id); I think that part is missing in the official MicroPython ESP32 port and that is the reason for the "Strange GPIO behaviour".

I have backed your campaign on this product and understand it is a development in process and is in early stage. I just checked out your blog.sipeed.com and I notice the syntax of your port of python is a little different from main stream Micro-Python. i.e LCD >>> = machine.st7789 () ; there is an ...

One thing bothers me about all this cheap hardware: support At this stage, those boards are mainly intended for developers , the people who knows how to deal with "subtle bugs" and can participate in the software (and hardware) development. If Sipeed is clever enough, it will provide as much docume...

Color OLED modules with resolution 128x128, 1.5" are available for ~15 US$ (except at Adafruit, where it costs 2x more).
The controler is SSD1351, as far as I know, only SPI interface is available.
Back side usually looks something like this:

Your allowance is less than $5? :D I don't quite understand the point. BTW, Fun Fact: The board with WiFi contains an ESP8285, so you could in fact run TWO MicroPython instances on one board. Fun aside, it wouldn't be too useful to run MicroPython on ESP8285, but it could be interesting (and maybe ...

Interesting discussion with some useful links on HACKADAY

A new dual-core RISC-V 64bit board, Sipeed MAIX, just apeared on the Indiegogo campain . Sipeed MAIX is the first RV64 AI board for Edge Computing, it makes AI embeded to any IoT device possible. MAIX have tons of excited features: DualCore RV64 IMAFDC, 8MB SRAM, Neural Network Processor(0.25~0.5TOP...

Chinese sellers often writes nonsense descriptions "IPS HD TFT ... LCD OLED Display" intentionally, to be found by search engines...

For all practical usage (especially in an environment such as MicroPython) there is almost no difference between using internal RAM and external SPI-RAM. Main reason for that is the fact that the ESP32 code is executed from Flash which is an external, SPI connected, device. Flash read operations are...

SPIRAM is much slower. Waayyyyyyyy slower. It is slower, but... Theoretical SPI-RAM access speed is ~40MB/s. In final application, for example in MicroPython firmware, SPI-RAM access speed is is ~14 MB/sec. The access is cached in internal RAM buffer (same as Flash access) and practical results sho...