ScStw/ESP32-HUB75-MatrixPanel-DMA
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Possible solution for #402

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Don't have hardware to test however.
This commit is contained in:
mrfaptastic 2023-02-19 17:50:18 +10:00
parent 59071660fc
commit 9a83f26a6f
1 changed files with 30 additions and 17 deletions
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47
src/platforms/esp32/esp32_i2s_parallel_dma.cpp
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@ -56,12 +56,12 @@ static void IRAM_ATTR irq_hndlr(void* arg) { // if we use I2S1 (default)
} // end irq_hndlr } // end irq_hndlr
*/ */
volatile int active_dma_buffer_output_count = 0; volatile int DRAM_ATTR active_dma_buffer_output_count = 0;
void IRAM_ATTR irq_hndlr(void* arg) { void IRAM_ATTR irq_hndlr(void* arg) {
// Clear flag so we can get retriggered // Clear flag so we can get retriggered
SET_PERI_REG_BITS(I2S_INT_CLR_REG(ESP32_I2S_DEVICE), I2S_OUT_EOF_INT_CLR_V, 1, I2S_OUT_EOF_INT_CLR_S); //SET_PERI_REG_BITS(I2S_INT_CLR_REG(ESP32_I2S_DEVICE), I2S_OUT_EOF_INT_CLR_V, 1, I2S_OUT_EOF_INT_CLR_S);
active_dma_buffer_output_count++; active_dma_buffer_output_count++;
@ -629,33 +629,46 @@ static void IRAM_ATTR irq_hndlr(void* arg) { // if we use I2S1 (default)
} }
*/ */
// 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
// THIS WORKS SMOOTHLY EXCEPT FOR THE OFFSET ON MOVING GRAPHICS _dev->int_clr.out_eof = 1; // clear interrupt
_dev->int_ena.out_eof = 1;
if ( current_back_buffer_id == 1) {
_dmadesc_a[_dmadesc_last].qe.stqe_next = &_dmadesc_b[0];
// Wait until we're now stuck in a _dmadesc_a loop;
active_dma_buffer_output_count = 0; active_dma_buffer_output_count = 0;
while (!active_dma_buffer_output_count) {} while (!active_dma_buffer_output_count) {}
_dmadesc_a[_dmadesc_last].qe.stqe_next = &_dmadesc_b[0];
_dev->int_clr.out_eof = 1; // clear interrupt
active_dma_buffer_output_count = 0;
while (!active_dma_buffer_output_count) {}
_dmadesc_a[_dmadesc_last].qe.stqe_next = &_dmadesc_a[0]; // get this preped for the next flip buffer _dmadesc_a[_dmadesc_last].qe.stqe_next = &_dmadesc_a[0]; // get this preped for the next flip buffer
current_back_buffer_id = 0;
} else { } else { // we are currently active on _dmadesc_a. we want to flip across and loop _dmadesc_
_dev->int_clr.out_eof = 1; // clear interrupt
active_dma_buffer_output_count = 0;
while (!active_dma_buffer_output_count) {}
_dmadesc_b[_dmadesc_last].qe.stqe_next = &_dmadesc_a[0]; _dmadesc_b[_dmadesc_last].qe.stqe_next = &_dmadesc_a[0];
// Wait until we're now stuck in a _dmadesc_a loop; _dev->int_clr.out_eof = 1; // clear interrupt
active_dma_buffer_output_count = 0; active_dma_buffer_output_count = 0;
while (!active_dma_buffer_output_count) {} while (!active_dma_buffer_output_count) {}
_dmadesc_b[_dmadesc_last].qe.stqe_next = &_dmadesc_b[0]; _dmadesc_b[_dmadesc_last].qe.stqe_next = &_dmadesc_b[0];
current_back_buffer_id = 1;
} }
current_back_buffer_id ^= 1; // current_back_buffer_id ^= 1;
// Disable intterupt
// Disable intterupt
_dev->int_ena.out_eof = 0; _dev->int_ena.out_eof = 0;
} // end flip } // end flip