I have two Smart Matrix V4 Shields both give the same result. I only have these panels so no I have not tested with other panels. Maybe I am doing something silly with the hardware wiring I will double check but Its a simple Ribbon cable going from Shield to Panel.
This is the code that accompanies the video shown above.
// uncomment one line to select your MatrixHardware configuration - configuration header needs to be included before <SmartMatrix.h>
#include <MatrixHardware_Teensy3_ShieldV4.h> // SmartLED Shield for Teensy 3 (V4)
//#include <MatrixHardware_Teensy4_ShieldV5.h> // SmartLED Shield for Teensy 4 (V5)
//#include <MatrixHardware_Teensy3_ShieldV1toV3.h> // SmartMatrix Shield for Teensy 3 V1-V3
//#include <MatrixHardware_Teensy4_ShieldV4Adapter.h> // Teensy 4 Adapter attached to SmartLED Shield for Teensy 3 (V4)
//#include <MatrixHardware_ESP32_V0.h> // This file contains multiple ESP32 hardware configurations, edit the file to define GPIOPINOUT (or add #define GPIOPINOUT with a hardcoded number before this #include)
//#include "MatrixHardware_Custom.h" // Copy an existing MatrixHardware file to your Sketch directory, rename, customize, and you can include it like this
#include <SmartMatrix.h>
#define MODE_MAP_REVERSE_ENGINEERING 0
#define MODE_MAP_TESTING 1
//#define SKETCH_MODE MODE_MAP_REVERSE_ENGINEERING
#define SKETCH_MODE MODE_MAP_TESTING
#define COLOR_DEPTH 24 // leave this as 24 for this sketch
#if (SKETCH_MODE == MODE_MAP_REVERSE_ENGINEERING)
const uint16_t kMatrixWidth = 128; // must be multiple of 8
const uint16_t kMatrixHeight = 4;
const uint8_t kPanelType = SM_PANELTYPE_HUB75_4ROW_MOD2SCAN; // Use this to reverse engineer mapping for a MOD2 panel
//const uint8_t kPanelType = SM_PANELTYPE_HUB75_8ROW_MOD4SCAN; // Use this to reverse engineer mapping for a MOD4 panel
#endif
#if (SKETCH_MODE == MODE_MAP_TESTING)
const uint16_t kMatrixWidth = 32; // must be multiple of 8
const uint16_t kMatrixHeight = 16;
const uint8_t kPanelType = SM_PANELTYPE_HUB75_16ROW_32COL_MOD4SCAN; // use SM_PANELTYPE_HUB75_16ROW_MOD8SCAN for common 16x32 panels
#endif
const uint8_t kRefreshDepth = 36; // leave as 36 for this sketch
const uint8_t kDmaBufferRows = 4; // known working: 2-4, use 2 to save memory, more to keep from dropping frames and automatically lowering refresh rate
const uint32_t kMatrixOptions = (SM_HUB75_OPTIONS_NONE); // see http://docs.pixelmatix.com/SmartMatrix for options
const uint8_t kBackgroundLayerOptions = (SM_BACKGROUND_OPTIONS_NONE);
SMARTMATRIX_ALLOCATE_BUFFERS(matrix, kMatrixWidth, kMatrixHeight, kRefreshDepth, kDmaBufferRows, kPanelType, kMatrixOptions);
SMARTMATRIX_ALLOCATE_BACKGROUND_LAYER(backgroundLayer, kMatrixWidth, kMatrixHeight, COLOR_DEPTH, kBackgroundLayerOptions);
void setup() {
matrix.addLayer(&backgroundLayer);
matrix.begin();
matrix.setBrightness(128);
// do a (normally unnecessary) swapBuffers call to work around ESP32 bug where first swap is ignored
backgroundLayer.swapBuffers();
}
void loop() {
for(int j=0; j<kMatrixHeight; j++) {
rgb24 colorByHeight;
colorByHeight.red = 0xff;
if(j & 0x01)
colorByHeight.green = 0xff;
if(j & 0x02)
colorByHeight.blue = 0xff;
for(int i=0; i<kMatrixWidth; i++) {
backgroundLayer.drawPixel(i,j,colorByHeight);
backgroundLayer.swapBuffers();
delay(250);
backgroundLayer.fillScreen({0,0,0});
}
}
}
