MicroPython Forum (Archive)

I stumbled upon the same buffer protocol problem, albeit aiming to a different target: viewtopic.php?f=15&t=9211

There's currently no proper solution, I had to make a compromise on RAM usage to achive an acceptable result. Maybe my topic contains something useful to you.

Just un update about how I solved my problem. I used a second image buffer to mirror what it is shown on the display, and byte-by-byte look for the differences against the FrameBuffer actual buffer, and then send data to the display only for those differences. This additional computational cost is l...

Yes, I thought about it, but I don't agree it is simpler. FrameBuffer gives me all the basic drawing primitives for free, especially a tedious feature like text drawing. Also (if I'm not going wrong) could be considered as standard in MicroPython, and future new FrameBuffer features will be availabl...

Yes, this display module allows the update of a single byte, 8 pixels.

Edit: I'm not expecting to do this writing regular Python code, C or even something else would be fine. But I'm glad to know that there's currently no way to do this. Thanks.

Exactly: I'd like to send to the display, though the I2C bus, only the bytes actively written by the FrameBuffer class, and I need to replace the bytearray with something else - but it must to implement the buffer protocol. Currently I'm sending the whole bytearray to the display when needed and it ...

Hi all. I'm writing a small library to drive the Seeed Grove OLED display ( https://wiki.seeedstudio.com/Grove-OLED_Display_1.12inch/ ). I'm following the Arduino example source code, it has been pretty easy so far. I'd like to let the FrameBuffer class to directly write into the display ram but I n...

I was expecting that Bluetooth LE was a just a low-power version on the regular bluetooth. Now I know it isn't

Thanks a lot!

Hi all. Just bought a ESP-WROOM-32, immediately flashed Micropython and played a bit with it, very cool! I'm really not a bluetooth expert, but I wrote in the past some client-server programs to communicate between PCs using pybluez and the serial-like RFCOMM protocol. I'm trying to do the same thin...

@jimmo Thanks a lot for the clear explaination.

@pythoncoder Yes, reliability does matter to me, and ADCs too. Regarding the serial communication I'm planning to connect to board to a PC (Raspberry PI or other, still to be decided, but it doesn't matter) and I want to have communication and power on the same USB cable, so I'm wondering weather th...