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Qudor-Engineer / DMD32

A library for driving the Freetronics 512 pixel dot matrix LED display "DMD", a 32 x 16 layout using ESP32.
GNU General Public License v3.0
29 stars 19 forks source link

Matrix of 3 x 5 displays #8

Closed leonhutton closed 2 years ago

leonhutton commented 3 years ago

Hi,

Thanks for creating this library. I am trying to adjust the library to work with DISPLAYS_ACROSS 3 and DISPLAYS_DOWN 5.

I have done some experimentation but I my main issue is understanding the following function:

DMD::DMD(byte panelsWide, byte panelsHigh) { uint16_t ui; DisplaysWide=panelsWide; DisplaysHigh=panelsHigh; DisplaysTotal=DisplaysWide*DisplaysHigh; row1 = DisplaysTotal<<4; row2 = DisplaysTotal<<5; row3 = ((DisplaysTotal<<2)*3)<<2; bDMDScreenRAM = (byte *) malloc(DisplaysTotal*DMD_RAM_SIZE_BYTES);

Could this be adjusted to accommodate another row?

Thanks for your help!

leonhutton commented 3 years ago

One other thing to note: I have also tried to connect my displays in a 4 x 4 array, but I get a flashing display. Any combination up to 4 rows works, but adding the 4th row makes the display flash.

Qudor-Engineer commented 3 years ago

Hi, Please refer to the original DMD library (https://github.com/freetronics/DMD).