ScStw/ESP32-HUB75-MatrixPanel-DMA
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fix: _dmadesc_ loop -> better Image quality

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fix: min_refresh_rate to uint16_t -> higher min_refresh_rate possible
fix: hlineDMA and vlineDMA when line starts off matrix it is now partially drawn instead of not at all -> used in Text when size > 1 and letter is scrolling out
This commit is contained in:
Lukas 2023-03-09 12:25:43 +01:00
parent fd88ef48d8
commit 2abd685b7a
3 changed files with 19 additions and 24 deletions
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10
src/ESP32-HUB75-MatrixPanel-I2S-DMA.cpp
View file

@ -831,9 +831,12 @@ void MatrixPanel_I2S_DMA::hlineDMA(int16_t x_coord, int16_t y_coord, int16_t l,
if ( !initialized )
return;
if ( x_coord < 0 || y_coord < 0 || l < 1 || x_coord >= PIXELS_PER_ROW || y_coord >= m_cfg.mx_height)
if ( (x_coord + l) < 1 || y_coord < 0 || l < 1 || x_coord >= PIXELS_PER_ROW || y_coord >= m_cfg.mx_height)
return;
l = x_coord < 0 ? l+x_coord : l;
x_coord = x_coord < 0 ? 0 : x_coord;
l = ( (x_coord + l) >= PIXELS_PER_ROW ) ? (PIXELS_PER_ROW - x_coord):l;
@ -923,9 +926,12 @@ void MatrixPanel_I2S_DMA::vlineDMA(int16_t x_coord, int16_t y_coord, int16_t l,
if ( !initialized )
return;
if ( x_coord < 0 || y_coord < 0 || l < 1 || x_coord >= PIXELS_PER_ROW || y_coord >= m_cfg.mx_height)
if ( x_coord < 0 || (y_coord + l) < 1 || l < 1 || x_coord >= PIXELS_PER_ROW || y_coord >= m_cfg.mx_height)
return;
l = y_coord < 0 ? l+y_coord : l;
y_coord = y_coord < 0 ? 0 : y_coord;
// check for a length that goes beyond the height of the screen! Array out of bounds dma memory changes = screwed output #163
l = ( (y_coord + l) >= m_cfg.mx_height ) ? (m_cfg.mx_height - y_coord):l;
//if (y_coord + l > m_cfg.mx_height)

4
src/ESP32-HUB75-MatrixPanel-I2S-DMA.h
View file

@ -274,7 +274,7 @@ struct HUB75_I2S_CFG {
bool clkphase;
// Minimum refresh / scan rate needs to be configured on start due to LSBMSB_TRANSITION_BIT calculation in allocateDMAmemory()
uint8_t min_refresh_rate;
uint16_t min_refresh_rate;
// struct constructor
HUB75_I2S_CFG (
@ -290,7 +290,7 @@ struct HUB75_I2S_CFG {
clk_speed _i2sspeed = HZ_15M,
uint8_t _latblk = DEFAULT_LAT_BLANKING, // Anything > 1 seems to cause artefacts on ICS panels
bool _clockphase = true,
uint8_t _min_refresh_rate = 60
uint16_t _min_refresh_rate = 60
) : mx_width(_w),
mx_height(_h),
chain_length(_chain),

29
src/platforms/esp32/esp32_i2s_parallel_dma.cpp
View file

@ -61,7 +61,7 @@ static void IRAM_ATTR irq_hndlr(void* arg) { // if we use I2S1 (default)
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++;
@ -636,40 +636,29 @@ static void IRAM_ATTR irq_hndlr(void* arg) { // if we use I2S1 (default)
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'
_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]; // Start sending out _dmadesc_b (or buffer 1)
current_back_buffer_id = 0; // quickly update the library so it stops writing dirrectly to buffer 1!
_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
//fix _dmadesc_ loop issue #407
//need to connect the up comming _dmadesc_ not the old one
_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_
_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];
current_back_buffer_id = 1;
_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];
_dmadesc_a[_dmadesc_last].qe.stqe_next = &_dmadesc_a[0];
}
// current_back_buffer_id ^= 1;
current_back_buffer_id ^= 1;
// Disable intterupt
_dev->int_ena.out_eof = 0;