Driver for a LED Matrix of 9 32x16 RGB HUB75 panels, using an STM32F4 Discovery board as low-level driver, and an Atheros AR9331 based WiFi router running OpenWRT as Art-Net data receiver.
License: MIT License
Hello, Mr. can you briefly describe the idea of your program?
Dear Frans-Willem:
I read your article 96×48 full-color LED Matrix, thanks for your detail explanation! I am trying to understand your code.
In the "framebuffer.h" file, you have following definitions:
#define FRAMEBUFFER_SHIFTLEN (FRAMEBUFFER_BITSPERLINE * 2)I understand the macro FRAMEBUFFER_BITSPERLINE, it equals to , shouldn't the shift length also equals to
FRAMEBUFFER_BITSPERLINE?
In your article, you have following comments:
So if you chain 2 panels, you’d have to shift in 64 bits each time.
In your project, you chained 9 pieces of RGB LED matrix with 32x16 resolution, doesn't that mean the shift length equals to ?
Hope you can get this message, and help me understand the trick.
Thanks & Best Regards!
I will be using DCMI together with RGB LED Matrix. For the matrix, I've followed: Adafruit guide that uses a protoshield. I can use Arduino protoshield thanks to ST Zio connector on my Nucleo-F767ZI (144-package) board.
The pins used by Adafruit are:
--- 32x16 Matrix ---
R1 digital 2 / PF15
G1 digital 3 / PE13
B1 digital 4 / PF14
R2 digital 5 / PE11
G2 digital 6 / PE9
B2 digital 7 / PF13
A analog 0 / PA3
B analog 1 / PC0
C analog 2 / PC3
LAT/STB analog 3 / PF3
CLK digital 8 / PF12
OE digital 9 / PD15
don't collide with DCMI (8-bit external synchro) pins:
--- DCMI ---
PIXCLK PA6
HSYNC PA4
D4 PE4
D6 PE5
D7 PE6
VSYNC PG9
D5 PD3
D3 PC9
D2 PC8
D1 PC7
D0 PC6
The wiring in Wiring.md however does collide, very often (uses PD3, PE4, PE5, PE6, PC6).
Question: Will I be able to switch code of your library to the Arduino pin mapping?
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