diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/ESP32-HUB75-MatrixPanel-I2S-DMA.cpp | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/src/ESP32-HUB75-MatrixPanel-I2S-DMA.cpp b/src/ESP32-HUB75-MatrixPanel-I2S-DMA.cpp index 92d7ac3..b006e31 100644 --- a/src/ESP32-HUB75-MatrixPanel-I2S-DMA.cpp +++ b/src/ESP32-HUB75-MatrixPanel-I2S-DMA.cpp @@ -188,8 +188,21 @@ void MatrixPanel_I2S_DMA::configureDMA(const HUB75_I2S_CFG &_cfg) num_dma_payload_colour_depths = 1; } + // Create row vector for a row shuffle. + std::vector<int> v; + for (int i = 0; i < ROWS_PER_FRAME; i++) { v.push_back(i); } + for (int i = 1; i < ROWS_PER_FRAME-5; i++) + { + std::iter_swap(v.begin()+i,v.begin()+i+5); + } + for (int &row: v) + { + // Serial.println (row, DEC); + } + // Fill DMA linked lists for both frames (as in, halves of the HUB75 panel) and if double buffering is enabled, link it up for both buffers. - for (int row = 0; row < ROWS_PER_FRAME; row++) + //for (int row = 0; row < ROWS_PER_FRAME; row++) + for (int &row: v) { // first set of data is LSB through MSB, single pass (IF TOTAL SIZE < DMA_MAX) - all colour bits are displayed once, which takes care of everything below and including LSBMSB_TRANSITION_BIT // NOTE: size must be less than DMA_MAX - worst case for library: 16-bpp with 256 pixels per row would exceed this, need to break into two |