Search found 10 matches

by c22
Sat Nov 21, 2020 10:00 am
Forum: Programs, Libraries and Tools
Topic: How to implement the buffer protocol
Replies: 9
Views: 383

Re: How to implement the buffer protocol

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...
by c22
Wed Oct 28, 2020 9:13 am
Forum: Programs, Libraries and Tools
Topic: How to implement the buffer protocol
Replies: 9
Views: 383

Re: How to implement the buffer protocol

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...
by c22
Wed Oct 28, 2020 8:36 am
Forum: Programs, Libraries and Tools
Topic: How to implement the buffer protocol
Replies: 9
Views: 383

Re: How to implement the buffer protocol

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.
by c22
Wed Oct 28, 2020 7:33 am
Forum: Programs, Libraries and Tools
Topic: How to implement the buffer protocol
Replies: 9
Views: 383

Re: How to implement the buffer protocol

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 ...
by c22
Tue Oct 27, 2020 9:35 pm
Forum: Programs, Libraries and Tools
Topic: How to implement the buffer protocol
Replies: 9
Views: 383

How to implement the buffer protocol

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...
by c22
Sat Oct 24, 2020 8:03 pm
Forum: ESP32 boards
Topic: bluetooth, send and receive raw data
Replies: 2
Views: 184

Re: bluetooth, send and receive raw data

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!
by c22
Fri Oct 23, 2020 4:48 pm
Forum: ESP32 boards
Topic: bluetooth, send and receive raw data
Replies: 2
Views: 184

bluetooth, send and receive raw data

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...
by c22
Sun Oct 04, 2020 8:59 pm
Forum: ESP32 boards
Topic: What to buy?
Replies: 8
Views: 598

Re: What to buy?

@jimmo Thanks a lot for the clear explaination.
by c22
Wed Sep 30, 2020 5:22 pm
Forum: ESP32 boards
Topic: What to buy?
Replies: 8
Views: 598

Re: What to buy?

@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...
by c22
Tue Sep 29, 2020 8:28 pm
Forum: ESP32 boards
Topic: What to buy?
Replies: 8
Views: 598

What to buy?

Hi all. I'm a full-time software developer and I'd like to test what I remember of my electronics classes of... 20 years ago, give or take. So I'm planning to buy a board to run MicroPython for a personal project. A quick look into Amazon shows a lot of different vendors offering a variety of differ...