ScStw/ESP32-HUB75-MatrixPanel-DMA
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Cleanup

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This commit is contained in:
mrfaptastic 2023-04-09 21:37:49 +01:00
parent a185b72d59
commit 4bff4955ca
2 changed files with 9 additions and 21 deletions
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2
examples/HueValueSpectrum/HueValueSpectrum.ino
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@ -8,6 +8,8 @@ MatrixPanel_I2S_DMA *dma_display = nullptr;
void setup() {
Serial.begin(112500);
HUB75_I2S_CFG::i2s_pins _pins={
25, //R1_PIN,

28
src/ESP32-HUB75-MatrixPanel-I2S-DMA.cpp
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@ -45,11 +45,11 @@ bool MatrixPanel_I2S_DMA::allocateDMAmemory()
size_t allocated_fb_memory = 0;
int fbs_required = (m_cfg.double_buff) ? 2 : 1;
for (int fb = 0; fb < fbs_required; fb++)
for (int fb = 0; fb < (fbs_required); fb++)
{
frame_buffer[fb].rowBits.reserve(ROWS_PER_FRAME);
for (int malloc_num = 0; malloc_num < ROWS_PER_FRAME; ++malloc_num)
for (int malloc_num = 0; malloc_num < ROWS_PER_FRAME; malloc_num++)
{
auto ptr = std::make_shared<rowBitStruct>(PIXELS_PER_ROW, m_cfg.getPixelColorDepthBits(), m_cfg.double_buff);
@ -62,14 +62,17 @@ bool MatrixPanel_I2S_DMA::allocateDMAmemory()
// TODO: should we release all previous rowBitStructs here???
}
allocated_fb_memory += ptr->getColorDepthSize();
frame_buffer[fb].rowBits.emplace_back(ptr); // save new rowBitStruct into rows vector
allocated_fb_memory += ptr->getColorDepthSize(); // byte required to display all colour depths for the rows shown at the same time
frame_buffer[fb].rowBits.emplace_back(ptr); // save new rowBitStruct pointer into rows vector
++frame_buffer[fb].rows;
}
}
ESP_LOGI("I2S-DMA", "Allocating %d bytes memory for DMA BCM framebuffer(s).", allocated_fb_memory);
// calculate the lowest LSBMSB_TRANSITION_BIT value that will fit in memory that will meet or exceed the configured refresh rate
//#define FORCE_COLOR_DEPTH 1
#if !defined(FORCE_COLOR_DEPTH)
ESP_LOGI("I2S-DMA", "Minimum visual refresh rate (scan rate from panel top to bottom) requested: %d Hz", m_cfg.min_refresh_rate);
@ -199,25 +202,8 @@ void MatrixPanel_I2S_DMA::configureDMA(const HUB75_I2S_CFG &_cfg)
}
#ifndef ROW_SCAN_SHUFFLE
// Fill DMA linked lists for both frames (as in, halves of the HUB75 panel) in sequence (top to bottom)
for (int row = 0; row < ROWS_PER_FRAME; row++)
#else
// Create row vector for a row shuffle.
std::vector<int> v;
if (ROWS_PER_FRAME == 16) { //64wx32h pixel panel
// v = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
v = {6,2,4,0,8,10,12,15,14,13,11,9,1,5,3,7};
}
if (ROWS_PER_FRAME == 32) { //64wx64h panel
// v = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
v = {5,3,1,6,8,11,13,15,17,19,21,23,25,27,31,30,29,28,26,24,22,20,18,16,10,14,12,9,7,0,4,2};
}
for (int &row: v)
#endif
{
// 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