ScStw/ESP32-HUB75-MatrixPanel-DMA
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Update esp32_i2s_parallel_dma.cpp

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mrfaptastic 2023-03-10 00:19:42 +00:00 committed by GitHub
parent d345aaf8c4
commit c083b94ac5
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1 changed files with 4 additions and 25 deletions
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29
src/platforms/esp32/esp32_i2s_parallel_dma.cpp
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@ -613,31 +613,12 @@ static void IRAM_ATTR irq_hndlr(void* arg) { // if we use I2S1 (default)
void Bus_Parallel16::flip_dma_output_buffer(int &current_back_buffer_id) // pass by reference so we can change in main matrixpanel class
{
// Setup interrupt handler which is focussed only on the (page 322 of Tech. Ref. Manual)
// "I2S_OUT_EOF_INT: Triggered when rxlink has finished sending a packet" (when dma linked list with eof = 1 is hit)
//_dev->int_ena.out_eof = 1;
// MISALIGNMENT ON TOP/2 THE PANEL BETWEEN FAST MOVING GRAPHICS IS CAUSED
// DUE TO THE CHANGE OF BACK BUFFER ID AND THE FRIGGIN DMA BUFFER!!!
/*
if ( current_back_buffer_id == 1) {
_dmadesc_a[_dmadesc_last].qe.stqe_next = _dmadesc_blank;
}
else {
_dmadesc_b[_dmadesc_last].qe.stqe_next = _dmadesc_blank;
}
*/
// THIS WORKS SMOOTHLY EXCEPT FOR THE OFFSET ON MOVING GRAPHICS
_dev->int_ena.out_eof = 1; // enable interrupt
if ( current_back_buffer_id == 1) {
// _dmadesc_b is not visable, make it visible. Currently looping around _dmadesc_a
// GFX library is changing pixels of back buffer '1'
_dmadesc_a[_dmadesc_last].qe.stqe_next = &_dmadesc_b[0]; // Start sending out _dmadesc_b (or buffer 1)
_dmadesc_a[_dmadesc_last].qe.stqe_next = &_dmadesc_b[0]; // Start sending out _dmadesc_b (or buffer 1)
active_dma_buffer_output_count = 0;
while (!active_dma_buffer_output_count) {}
@ -647,9 +628,7 @@ static void IRAM_ATTR irq_hndlr(void* arg) { // if we use I2S1 (default)
_dmadesc_b[_dmadesc_last].qe.stqe_next = &_dmadesc_b[0];
} else {
// current_back_buffer_id == 0
// we are currently active on _dmadesc_a. we want to flip across and loop _dmadesc_
_dmadesc_b[_dmadesc_last].qe.stqe_next = &_dmadesc_a[0];
active_dma_buffer_output_count = 0;