http://embedded-lab.com/blog/stm32-gpio-ports-insights/
http://hertaville.com/stm32f0-gpio-tutorial-part-1.html
The libmaple libraries, on which STM32duino is based, provides access to registers by the syntax:
GPIOA->regs->REG
mikaelz
/ mosaic-live-6ch-substream.sh
Last active
June 1, 2025 09:52
Grid/mosaic view RTSP streams with ffmpeg based on https://trac.ffmpeg.org/wiki/Create%20a%20mosaic%20out%20of%20several%20input%20videos
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| #!/bin/bash | |
| ffmpeg -rtsp_transport tcp \ | |
| -i rtsp://smartiptv:[email protected]/Streaming/Channels/102 \ | |
| -i rtsp://smartiptv:[email protected]/Streaming/Channels/202 \ | |
| -i rtsp://smartiptv:[email protected]/Streaming/Channels/302 \ | |
| -i rtsp://smartiptv:[email protected]/Streaming/Channels/402 \ | |
| -i rtsp://smartiptv:[email protected]/Streaming/Channels/502 \ | |
| -i rtsp://smartiptv:[email protected]/Streaming/Channels/602 \ | |
| -filter_complex " |
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <title>Quad 7 Segment Display in HTML/JavaScript</title> | |
| <style type="text/css"> | |
| div.anode { | |
| border: solid 2px red; | |
| background: red; | |
| color: white; |
nrdobie
/ max7219_max7221.ino
Last active
April 18, 2025 21:38
Basic code for using Maxim MAX7219/MAX7221 with Arduino.
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| /* | |
| Basic code for using Maxim MAX7219/MAX7221 with Arduino. | |
| Wire the Arduino and the MAX7219/MAX7221 together as follows: | |
| | Arduino | MAX7219/MAX7221 | | |
| | --------- | --------------- | | |
| | MOSI (11) | DIN (1) | | |
| | SCK (13) | CLK (13) | | |
| | I/O (7)* | LOAD/CS (12) | |