ScStw/ESP32-HUB75-MatrixPanel-DMA
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This commit is contained in:
mrfaptastic 2023-04-02 13:12:53 +01:00
parent b101ae6997
commit 7c2d527dd8
6 changed files with 40 additions and 460 deletions
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22
examples/BouncingSquares/BouncingSquares.ino → examples/3_DoubleBuffer/3_DoubleBuffer.ino
View file

@ -1,3 +1,9 @@
// Example uses the following configuration: mxconfig.double_buff = true;
// to enable double buffering, which means display->flipDMABuffer(); is required.
// Bounce squares around the screen, doing the re-drawing in the background back-buffer.
// Double buffering is not always required in reality.
#include <ESP32-HUB75-MatrixPanel-I2S-DMA.h>
MatrixPanel_I2S_DMA *display = nullptr;
@ -32,14 +38,14 @@ void setup()
Serial.println("...Starting Display");
HUB75_I2S_CFG mxconfig;
//mxconfig.double_buff = true; // Turn of double buffer
mxconfig.clkphase = false;
mxconfig.double_buff = true; // <------------- Turn on double buffer
//mxconfig.clkphase = false;
// OK, now we can create our matrix object
display = new MatrixPanel_I2S_DMA(mxconfig);
display->begin(); // setup display with pins as pre-defined in the library
// Create some Squares
// Create some random squares
for (int i = 0; i < numSquares; i++)
{
Squares[i].square_size = random(2,10);
@ -47,8 +53,6 @@ void setup()
Squares[i].ypos = random(0, display->height() - Squares[i].square_size);
Squares[i].velocityx = static_cast <float> (rand()) / static_cast <float> (RAND_MAX);
Squares[i].velocityy = static_cast <float> (rand()) / static_cast <float> (RAND_MAX);
//Squares[i].xdir = (random(2) == 1) ? true:false;
//Squares[i].ydir = (random(2) == 1) ? true:false;
int random_num = random(6);
Squares[i].colour = colours[random_num];
@ -57,9 +61,11 @@ void setup()
void loop()
{
display->flipDMABuffer(); // not used if double buffering isn't enabled
delay(25);
display->clearScreen();
display->flipDMABuffer(); // Show the back buffer, set currently output buffer to the back (i.e. no longer being sent to LED panels)
display->clearScreen(); // Now clear the back-buffer
delay(16); // <----------- Shouldn't see this clearscreen occur as it happens on the back buffer when double buffering is enabled.
for (int i = 0; i < numSquares; i++)
{

75
examples/4_HueValueSpectrumDemo/4_HueValueSpectrumDemo.ino
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@ -1,75 +0,0 @@
#define PANEL_RES_X 64 // Number of pixels wide of each INDIVIDUAL panel module.
#define PANEL_RES_Y 32 // Number of pixels tall of each INDIVIDUAL panel module.
#define PANEL_CHAIN 1 // Total number of panels chained one to another
#include <ESP32-HUB75-MatrixPanel-I2S-DMA.h>
MatrixPanel_I2S_DMA *dma_display = nullptr;
void setup() {
HUB75_I2S_CFG::i2s_pins _pins={
25, //R1_PIN,
26, //G1_PIN,
27, //B1_PIN,
14, //R2_PIN,
12, //G2_PIN,
13, //B2_PIN,
23, //A_PIN,
19, //B_PIN,
5, //C_PIN,
17, //D_PIN,
18, //E_PIN,
4, //LAT_PIN,
15, //OE_PIN,
16, //CLK_PIN
};
HUB75_I2S_CFG mxconfig(
PANEL_RES_X, // Module width
PANEL_RES_Y, // Module height
PANEL_CHAIN, // chain length
_pins // pin mapping
);
//mxconfig.clkphase = false;
//mxconfig.driver = HUB75_I2S_CFG::FM6126A;
// Display Setup
dma_display = new MatrixPanel_I2S_DMA(mxconfig);
dma_display->begin();
dma_display->clearScreen();
}
void loop() {
// Canvas loop
float t = (float)(millis()%4000)/4000.f;
float tt = (float)((millis()%16000)/16000.f;
for(int x = 0; x < PANEL_RES_X*PANEL_CHAIN; x++){
// calculate the overal shade
float f = ((sin(tt-(float)x/PANEL_RES_Y/32.)*2.f*PI)+1)/2)*255;
// calculate hue spectrum into rgb
float r = max(min(cosf(2.f*PI*(t+((float)x/PANEL_RES_Y+0.f)/3.f))+0.5f,1.f),0.f);
float g = max(min(cosf(2.f*PI*(t+((float)x/PANEL_RES_Y+1.f)/3.f))+0.5f,1.f),0.f);
float b = max(min(cosf(2.f*PI*(t+((float)x/PANEL_RES_Y+2.f)/3.f))+0.5f,1.f),0.f);
// iterate pixels for every row
for(int y = 0; y < PANEL_RES_Y; y++){
if(y*2 < PANEL_RES_Y){
// top-middle part of screen, transition of value
float t = (2.f*y+1)/PANEL_RES_Y;
dma_display->drawPixelRGB888(x,y,
(r*t)*f,
(g*t)*f,
(b*t)*f
);
}else{
// middle to bottom of screen, transition of saturation
float t = (2.f*(PANEL_RES_Y-y)-1)/PANEL_RES_Y;
dma_display->drawPixelRGB888(x,y,
(r*t+1-t)*f,
(g*t+1-t)*f,
(b*t+1-t)*f
);
}
}
}
}

38
examples/3_FM6126Panel/3_FM6126Panel.ino → examples/4_OtherShiftDriverPanel/4_OtherShiftDriverPanel.ino
View file

@ -1,19 +1,30 @@
// How to use this library with a FM6126 panel, thanks goes to:
// https://github.com/hzeller/rpi-rgb-led-matrix/issues/746
/**********************************************************************
* The library by default supports simple 'shift register' based panels
* with A,B,C,D,E lines to select a specific row, but there are plenty
* of examples of new chips coming on the market that work different.
*
* Please search through the project's issues. For some of these chips
* (you will need to look at the back of your panel to identify), this
* library has workarounds. This can be configured through using one of:
// mxconfig.driver = HUB75_I2S_CFG::FM6126A;
//mxconfig.driver = HUB75_I2S_CFG::ICN2038S;
//mxconfig.driver = HUB75_I2S_CFG::FM6124;
//mxconfig.driver = HUB75_I2S_CFG::MBI5124;
*/
#include <Arduino.h>
#include <ESP32-HUB75-MatrixPanel-I2S-DMA.h>
#include <FastLED.h>
////////////////////////////////////////////////////////////////////
// FM6126 support is still experimental
// Output resolution and panel chain length configuration
#define PANEL_RES_X 64 // Number of pixels wide of each INDIVIDUAL panel module.
#define PANEL_RES_Y 32 // Number of pixels tall of each INDIVIDUAL panel module.
#define PANEL_CHAIN 1 // Total number of panels chained one to another
// placeholder for the matrix object
MatrixPanel_I2S_DMA *dma_display = nullptr;
@ -34,21 +45,18 @@ CRGB ColorFromCurrentPalette(uint8_t index = 0, uint8_t brightness = 255, TBlend
void setup(){
/*
The configuration for MatrixPanel_I2S_DMA object is held in HUB75_I2S_CFG structure,
All options has it's predefined default values. So we can create a new structure and redefine only the options we need
Please refer to the '2_PatternPlasma.ino' example for detailed example of how to use the MatrixPanel_I2S_DMA configuration
if you need to change the pin mappings etc.
*/
HUB75_I2S_CFG mxconfig(
PANEL_RES_X, // module width
PANEL_RES_Y, // module height
PANEL_CHAIN // Chain length
);
mxconfig.driver = HUB75_I2S_CFG::FM6126A; // in case that we use panels based on FM6126A chip, we can set it here before creating MatrixPanel_I2S_DMA object
// in case that we use panels based on FM6126A chip, we can set it here before creating MatrixPanel_I2S_DMA object
mxconfig.driver = HUB75_I2S_CFG::FM6126A;
//mxconfig.driver = HUB75_I2S_CFG::ICN2038S;
//mxconfig.driver = HUB75_I2S_CFG::FM6124;
//mxconfig.driver = HUB75_I2S_CFG::MBI5124;
// OK, now we can create our matrix object
dma_display = new MatrixPanel_I2S_DMA(mxconfig);
@ -100,3 +108,7 @@ void loop(){
fps = 0;
}
}
// FM6126 panel , thanks goes to:
// https://github.com/hzeller/rpi-rgb-led-matrix/issues/746

0
examples/3_FM6126Panel/FM6126A.md → examples/4_OtherShiftDriverPanel/FM6126A.md
View file

0
examples/3_FM6126Panel/README.md → examples/4_OtherShiftDriverPanel/README.md
View file

363
src/ESP32-VirtualMatrixPanel-I2S-DMA.h-old
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@ -1,363 +0,0 @@
#ifndef _ESP32_VIRTUAL_MATRIX_PANEL_I2S_DMA
#define _ESP32_VIRTUAL_MATRIX_PANEL_I2S_DMA
/*******************************************************************
Class contributed by Brian Lough, and expanded by Faptastic.
Originally designed to allow CHAINING of panels together to create
a 'bigger' display of panels. i.e. Chaining 4 panels into a 2x2
grid.
However, the function of this class has expanded now to also manage
the output for
1) TWO scan panels = Two rows updated in parallel.
* 64px high panel = sometimes referred to as 1/32 scan
* 32px high panel = sometimes referred to as 1/16 scan
* 16px high panel = sometimes referred to as 1/8 scan
2) FOUR scan panels = Four rows updated in parallel
* 32px high panel = sometimes referred to as 1/8 scan
* 16px high panel = sometimes referred to as 1/4 scan
YouTube: https://www.youtube.com/brianlough
Tindie: https://www.tindie.com/stores/brianlough/
Twitter: https://twitter.com/witnessmenow
*******************************************************************/
#include "ESP32-HUB75-MatrixPanel-I2S-DMA.h"
#ifndef NO_GFX
#include <Fonts/FreeSansBold12pt7b.h>
#endif
struct VirtualCoords
{
int16_t x;
int16_t y;
int16_t virt_row; // chain of panels row
int16_t virt_col; // chain of panels col
VirtualCoords() : x(0), y(0)
{
}
};
enum PANEL_SCAN_RATE
{
NORMAL_TWO_SCAN, NORMAL_ONE_SIXTEEN, // treated as the same
FOUR_SCAN_32PX_HIGH,
FOUR_SCAN_16PX_HIGH
};
#ifdef USE_GFX_ROOT
class VirtualMatrixPanel : public GFX
#elif !defined NO_GFX
class VirtualMatrixPanel : public Adafruit_GFX
#else
class VirtualMatrixPanel
#endif
{
public:
int16_t virtualResX;
int16_t virtualResY;
int16_t vmodule_rows;
int16_t vmodule_cols;
int16_t panelResX;
int16_t panelResY;
int16_t dmaResX; // The width of the chain in pixels (as the DMA engine sees it)
MatrixPanel_I2S_DMA *display;
VirtualMatrixPanel(MatrixPanel_I2S_DMA &disp, int _vmodule_rows, int _vmodule_cols, int _panelResX, int _panelResY, bool serpentine_chain = true, bool top_down_chain = false)
#ifdef USE_GFX_ROOT
: GFX(_vmodule_cols * _panelResX, _vmodule_rows * _panelResY)
#elif !defined NO_GFX
: Adafruit_GFX(_vmodule_cols * _panelResX, _vmodule_rows * _panelResY)
#endif
{
this->display = &disp;
panelResX = _panelResX;
panelResY = _panelResY;
vmodule_rows = _vmodule_rows;
vmodule_cols = _vmodule_cols;
virtualResX = vmodule_cols * _panelResX;
virtualResY = vmodule_rows * _panelResY;
dmaResX = panelResX * vmodule_rows * vmodule_cols;
/* Virtual Display width() and height() will return a real-world value. For example:
* Virtual Display width: 128
* Virtual Display height: 64
*
* So, not values that at 0 to X-1
*/
_s_chain_party = serpentine_chain; // serpentine, or 'S' chain?
_chain_top_down = top_down_chain;
coords.x = coords.y = -1; // By default use an invalid co-ordinates that will be rejected by updateMatrixDMABuffer
}
// equivalent methods of the matrix library so it can be just swapped out.
virtual void drawPixel(int16_t x, int16_t y, uint16_t color);
virtual void fillScreen(uint16_t color); // overwrite adafruit implementation
virtual void fillScreenRGB888(uint8_t r, uint8_t g, uint8_t b);
void clearScreen() { display->clearScreen(); }
void drawPixelRGB888(int16_t x, int16_t y, uint8_t r, uint8_t g, uint8_t b);
#ifdef USE_GFX_ROOT
// 24bpp FASTLED CRGB colour struct support
void fillScreen(CRGB color);
void drawPixel(int16_t x, int16_t y, CRGB color);
#endif
uint16_t color444(uint8_t r, uint8_t g, uint8_t b) { return display->color444(r, g, b); }
uint16_t color565(uint8_t r, uint8_t g, uint8_t b) { return display->color565(r, g, b); }
uint16_t color333(uint8_t r, uint8_t g, uint8_t b) { return display->color333(r, g, b); }
void flipDMABuffer() { display->flipDMABuffer(); }
void drawDisplayTest();
void setRotate(bool rotate);
void setPhysicalPanelScanRate(PANEL_SCAN_RATE rate);
protected:
virtual VirtualCoords getCoords(int16_t &x, int16_t &y);
VirtualCoords coords;
bool _s_chain_party = true; // Are we chained? Ain't no party like a...
bool _chain_top_down = false; // is the ESP at the top or bottom of the matrix of devices?
bool _rotate = false;
PANEL_SCAN_RATE _panelScanRate = NORMAL_TWO_SCAN;
}; // end Class header
/**
* Calculate virtual->real co-ordinate mapping to underlying single chain of panels connected to ESP32.
* Updates the private class member variable 'coords', so no need to use the return value.
* Not thread safe, but not a concern for ESP32 sketch anyway... I think.
*/
inline VirtualCoords VirtualMatrixPanel::getCoords(int16_t &x, int16_t &y)
{
// Serial.println("Called Base.");
coords.x = coords.y = -1; // By defalt use an invalid co-ordinates that will be rejected by updateMatrixDMABuffer
// Do we want to rotate?
if (_rotate)
{
int16_t temp_x = x;
x = y;
y = virtualResY - 1 - temp_x;
}
if (x < 0 || x >= virtualResX || y < 0 || y >= virtualResY)
{ // Co-ordinates go from 0 to X-1 remember! otherwise they are out of range!
// Serial.printf("VirtualMatrixPanel::getCoords(): Invalid virtual display coordinate. x,y: %d, %d\r\n", x, y);
return coords;
}
// Stupidity check
if ((vmodule_rows == 1) && (vmodule_cols == 1)) // single panel...
{
coords.x = x;
coords.y = y;
}
else
{
uint8_t row = (y / panelResY) + 1; // a non indexed 0 row number
if ((_s_chain_party && !_chain_top_down && (row % 2 == 0)) // serpentine vertically stacked chain starting from bottom row (i.e. ESP closest to ground), upwards
||
(_s_chain_party && _chain_top_down && (row % 2 != 0)) // serpentine vertically stacked chain starting from the sky downwards
)
{
// First portion gets you to the correct offset for the row you need
// Second portion inverts the x on the row
coords.x = ((y / panelResY) * (virtualResX)) + (virtualResX - x) - 1;
// inverts the y the row
coords.y = panelResY - 1 - (y % panelResY);
}
else
{
// Normal chain pixel co-ordinate
coords.x = x + ((y / panelResY) * (virtualResX));
coords.y = y % panelResY;
}
}
// Reverse co-ordinates if panel chain from ESP starts from the TOP RIGHT
if (_chain_top_down)
{
/*
const HUB75_I2S_CFG _cfg = this->display->getCfg();
coords.x = (_cfg.mx_width * _cfg.chain_length - 1) - coords.x;
coords.y = (_cfg.mx_height-1) - coords.y;
*/
coords.x = (dmaResX - 1) - coords.x;
coords.y = (panelResY - 1) - coords.y;
}
/* START: Pixel remapping AGAIN to convert TWO parallel scanline output that the
* the underlying hardware library is designed for (because
* there's only 2 x RGB pins... and convert this to 1/4 or something
*/
if (_panelScanRate == FOUR_SCAN_32PX_HIGH)
{
/* Convert Real World 'VirtualMatrixPanel' co-ordinates (i.e. Real World pixel you're looking at
on the panel or chain of panels, per the chaining configuration) to a 1/8 panels
double 'stretched' and 'squished' coordinates which is what needs to be sent from the
DMA buffer.
Note: Look at the FourScanPanel example code and you'll see that the DMA buffer is setup
as if the panel is 2 * W and 0.5 * H !
*/
/*
Serial.print("VirtualMatrixPanel Mapping ("); Serial.print(x, DEC); Serial.print(","); Serial.print(y, DEC); Serial.print(") ");
// to
Serial.print("to ("); Serial.print(coords.x, DEC); Serial.print(","); Serial.print(coords.y, DEC); Serial.println(") ");
*/
if ((y & 8) == 0)
{
coords.x += ((coords.x / panelResX) + 1) * panelResX; // 1st, 3rd 'block' of 8 rows of pixels, offset by panel width in DMA buffer
}
else
{
coords.x += (coords.x / panelResX) * panelResX; // 2nd, 4th 'block' of 8 rows of pixels, offset by panel width in DMA buffer
}
// http://cpp.sh/4ak5u
// Real number of DMA y rows is half reality
// coords.y = (y / 16)*8 + (y & 0b00000111);
coords.y = (y >> 4) * 8 + (y & 0b00000111);
/*
Serial.print("OneEightScanPanel Mapping ("); Serial.print(x, DEC); Serial.print(","); Serial.print(y, DEC); Serial.print(") ");
// to
Serial.print("to ("); Serial.print(coords.x, DEC); Serial.print(","); Serial.print(coords.y, DEC); Serial.println(") ");
*/
}
else if (_panelScanRate == FOUR_SCAN_16PX_HIGH)
{
if ((y & 8) == 0)
{
coords.x += (panelResX >> 2) * (((coords.x & 0xFFF0) >> 4) + 1); // 1st, 3rd 'block' of 8 rows of pixels, offset by panel width in DMA buffer
}
else
{
coords.x += (panelResX >> 2) * (((coords.x & 0xFFF0) >> 4)); // 2nd, 4th 'block' of 8 rows of pixels, offset by panel width in DMA buffer
}
if (y < 32)
coords.y = (y >> 4) * 8 + (y & 0b00000111);
else
{
coords.y = ((y - 32) >> 4) * 8 + (y & 0b00000111);
coords.x += 256;
}
}
// Serial.print("Mapping to x: "); Serial.print(coords.x, DEC); Serial.print(", y: "); Serial.println(coords.y, DEC);
return coords;
}
inline void VirtualMatrixPanel::drawPixel(int16_t x, int16_t y, uint16_t color)
{ // adafruit virtual void override
getCoords(x, y);
this->display->drawPixel(coords.x, coords.y, color);
}
inline void VirtualMatrixPanel::fillScreen(uint16_t color)
{ // adafruit virtual void override
this->display->fillScreen(color);
}
inline void VirtualMatrixPanel::fillScreenRGB888(uint8_t r, uint8_t g, uint8_t b)
{
this->display->fillScreenRGB888(r, g, b);
}
inline void VirtualMatrixPanel::drawPixelRGB888(int16_t x, int16_t y, uint8_t r, uint8_t g, uint8_t b)
{
getCoords(x, y);
this->display->drawPixelRGB888(coords.x, coords.y, r, g, b);
}
#ifdef USE_GFX_ROOT
// Support for CRGB values provided via FastLED
inline void VirtualMatrixPanel::drawPixel(int16_t x, int16_t y, CRGB color)
{
getCoords(x, y);
this->display->drawPixel(coords.x, coords.y, color);
}
inline void VirtualMatrixPanel::fillScreen(CRGB color)
{
this->display->fillScreen(color);
}
#endif
inline void VirtualMatrixPanel::setRotate(bool rotate)
{
_rotate = rotate;
#ifndef NO_GFX
// We don't support rotation by degrees.
if (rotate)
{
setRotation(1);
}
else
{
setRotation(0);
}
#endif
}
inline void VirtualMatrixPanel::setPhysicalPanelScanRate(PANEL_SCAN_RATE rate)
{
_panelScanRate = rate;
}
#ifndef NO_GFX
inline void VirtualMatrixPanel::drawDisplayTest()
{
this->display->setFont(&FreeSansBold12pt7b);
this->display->setTextColor(this->display->color565(255, 255, 0));
this->display->setTextSize(1);
for (int panel = 0; panel < vmodule_cols * vmodule_rows; panel++)
{
int top_left_x = (panel == 0) ? 0 : (panel * panelResX);
this->display->drawRect(top_left_x, 0, panelResX, panelResY, this->display->color565(0, 255, 0));
this->display->setCursor(panel * panelResX, panelResY - 3);
this->display->print((vmodule_cols * vmodule_rows) - panel);
}
}
#endif
/*
// need to recreate this one, as it wouldn't work to just map where it starts.
inline void VirtualMatrixPanel::drawIcon (int *ico, int16_t x, int16_t y, int16_t icon_cols, int16_t icon_rows) {
int i, j;
for (i = 0; i < icon_rows; i++) {
for (j = 0; j < icon_cols; j++) {
// This is a call to this libraries version of drawPixel
// which will map each pixel, which is what we want.
//drawPixelRGB565 (x + j, y + i, ico[i * module_cols + j]);
drawPixel (x + j, y + i, ico[i * icon_cols + j]);
}
}
}
*/
#endif