I have a 64x64 matrix with the smartmatrix v4 and a Teensy 3.6. When running the example FeatureDemo all I get is this:
I did change a couple lines of code to define the 64x64 matrix. Here are the relevant lines:
#define COLOR_DEPTH 24 // known working: 24, 48 - If the sketch uses type rgb24
directly, COLOR_DEPTH must be 24
const uint8_t kMatrixWidth = 64; // known working: 32, 64, 96, 128
const uint8_t kMatrixHeight = 64; // known working: 16, 32, 48, 64
const uint8_t kRefreshDepth = 36; // known working: 24, 36, 48
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 uint8_t kPanelType = SMARTMATRIX_HUB75_64ROW_MOD32SCAN; // use SMARTMATRIX_HUB75_16ROW_MOD8SCAN for common 16x32 panels, or use SMARTMATRIX_HUB75_64ROW_MOD32SCAN for common 64x64 panels
const uint8_t kMatrixOptions = (SMARTMATRIX_OPTIONS_NONE); // see http://docs.pixelmatix.com/SmartMatrix for options
const uint8_t kBackgroundLayerOptions = (SM_BACKGROUND_OPTIONS_NONE);
const uint8_t kScrollingLayerOptions = (SM_SCROLLING_OPTIONS_NONE);
const uint8_t kIndexedLayerOptions = (SM_INDEXED_OPTIONS_NONE);
Thoughts on what to do?