ScStw/ESP32-HUB75-MatrixPanel-DMA
2
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Possible solution for #402

Browse source 
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
Show stats Download patch file Download diff file Expand all files Collapse all files

35
src/platforms/esp32/esp32_i2s_parallel_dma.cpp
View file

@ -56,12 +56,12 @@ static void IRAM_ATTR irq_hndlr(void* arg) { // if we use I2S1 (default)
} // 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) {
// 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++;
@ -629,31 +629,44 @@ 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;
if ( current_back_buffer_id == 1) {
_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
_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_b[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;
while (!active_dma_buffer_output_count) {}
_dmadesc_a[_dmadesc_last].qe.stqe_next = &_dmadesc_a[0]; // get this preped for the next flip buffer
} else {
current_back_buffer_id = 0;
} 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];
// 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;
while (!active_dma_buffer_output_count) {}
_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
_dev->int_ena.out_eof = 0;