ScStw/ESP32-HUB75-MatrixPanel-DMA
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Update ESP32-HUB75-MatrixPanel-I2S-DMA.cpp

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mrcodetastic 2025-03-17 13:59:39 +00:00 • committed by GitHub
parent 84d4388e4a
commit c5fd8d2d52
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1 changed files with 9 additions and 13 deletions

22
src/ESP32-HUB75-MatrixPanel-I2S-DMA.cpp
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@ -510,45 +510,41 @@ void MatrixPanel_I2S_DMA::clearFrameBuffer(bool _buff_id)
--row_idx; --row_idx;
ESP32_I2S_DMA_STORAGE_TYPE *row = fb->rowBits[row_idx]->getDataPtr(0); // set pointer to the HEAD of a buffer holding data for the entire matrix row ESP32_I2S_DMA_STORAGE_TYPE *row = fb->rowBits[row_idx]->getDataPtr(0); // set pointer to the HEAD of a buffer holding data for the entire matrix row
ESP32_I2S_DMA_STORAGE_TYPE abcde = (ESP32_I2S_DMA_STORAGE_TYPE)row_idx; ESP32_I2S_DMA_STORAGE_TYPE abcde = (ESP32_I2S_DMA_STORAGE_TYPE)row_idx;
// get last pixel index in a row of all colourdepths // get last pixel index in a row of all colourdepths
int x_pixel = fb->rowBits[row_idx]->width * fb->rowBits[row_idx]->colour_depth; int x_pixel = fb->rowBits[row_idx]->width * fb->rowBits[row_idx]->colour_depth;
abcde <<= BITS_ADDR_OFFSET; // shift row y-coord to match ABCDE bits in vector from 8 to 12 abcde <<= BITS_ADDR_OFFSET; // shift row y-coord to match ABCDE bits in vector from 8 to 12
do do
{ {
--x_pixel; --x_pixel;
if (m_cfg.driver == HUB75_I2S_CFG::SM5266P) if (m_cfg.driver == HUB75_I2S_CFG::SM5266P)
{ {
// modifications here for row shift register type SM5266P // modifications here for row shift register type SM5266P
// https://github.com/mrfaptastic/ESP32-HUB75-MatrixPanel-I2S-DMA/issues/164 // https://github.com/mrfaptastic/ESP32-HUB75-MatrixPanel-I2S-DMA/issues/164
row[x_pixel] = abcde & (0x18 << BITS_ADDR_OFFSET); // mask out the bottom 3 bits which are the clk di bk inputs row[x_pixel] = abcde & (0x18 << BITS_ADDR_OFFSET); // mask out the bottom 3 bits which are the clk di bk inputs
} }
else if (m_cfg.driver == HUB75_I2S_CFG::DP3246_SM5368) else if (m_cfg.driver == HUB75_I2S_CFG::DP3246_SM5368)
{ {
row[ESP32_TX_FIFO_POSITION_ADJUST(x_pixel)] = 0x0000; row[ESP32_TX_FIFO_POSITION_ADJUST(x_pixel)] = 0x0000;
} }
else else
{ {
row[ESP32_TX_FIFO_POSITION_ADJUST(x_pixel)] = abcde; row[ESP32_TX_FIFO_POSITION_ADJUST(x_pixel)] = abcde;
} }
} while (x_pixel != fb->rowBits[row_idx]->width); // spare the first "width's" worth of pixels as they are the LSB pixels/colordepth } while (x_pixel != fb->rowBits[row_idx]->width); // spare the first "width's" worth of pixels as they are the LSB pixels/colordepth
// colour_index[0] (LSB) x_pixels must be "marked" with a previous's row address, 'cause it is used to display // The colour_index[0] (LSB) x_pixels must be "marked" with a previous's row address, because it is used to display
// previous row while we pump in MSBs's for a new row // previous row while we pump in MSBs's for the next row.
if (row_idx == 0) { if (row_idx == 0) {
abcde = ROWS_PER_FRAME-1; // wrap around abcde = ROWS_PER_FRAME-1; // wrap around
} else { } else {
abcde = row_idx-1; abcde = row_idx-1;
} }
abcde <<= BITS_ADDR_OFFSET; // shift row y-coord to match ABCDE bits in vector from 8 to 12 abcde <<= BITS_ADDR_OFFSET; // shift row y-coord to match ABCDE bits in vector from 8 to 12
do do
{ {
--x_pixel; --x_pixel;