235 lines
9.1 KiB
C++
235 lines
9.1 KiB
C++
/******************************************************************************
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-----------
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Steps to use
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-----------
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1) In the sketch (i.e. this example):
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- Set values for NUM_ROWS, NUM_COLS, PANEL_RES_X, PANEL_RES_Y, PANEL_CHAIN.
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There are comments beside them explaining what they are in more detail.
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- Other than where the matrix is defined and matrix.begin in the setup, you
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should now be using the virtual display for everything (drawing pixels, writing text etc).
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You can do a find and replace of all calls if it's an existing sketch
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(just make sure you don't replace the definition and the matrix.begin)
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- If the sketch makes use of MATRIX_HEIGHT or MATRIX_WIDTH, these will need to be
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replaced with the width and height of your virtual screen.
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Either make new defines and use that, or you can use virtualDisp.width() or .height()
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Thanks to:
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* Brian Lough for the original example as raised in this issue:
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https://github.com/mrfaptastic/ESP32-HUB75-MatrixPanel-I2S-DMA/issues/26
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YouTube: https://www.youtube.com/brianlough
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Tindie: https://www.tindie.com/stores/brianlough/
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Twitter: https://twitter.com/witnessmenow
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* Galaxy-Man for the kind donation of panels make/test that this is possible:
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https://github.com/Galaxy-Man
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*****************************************************************************/
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/******************************************************************************
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* VIRTUAL DISPLAY / MATRIX PANEL CHAINING CONFIGURATION
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*
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* Note 1: If chaining from the top right to the left, and then S curving down
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* then serpentine_chain = true and top_down_chain = true
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* (these being the last two parameters of the virtualDisp(...) constructor.
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*
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* Note 2: If chaining starts from the bottom up, then top_down_chain = false.
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*
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* Note 3: By default, this library has serpentine_chain = true, that is, every
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* second row has the panels 'upside down' (rotated 180), so the output
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* pin of the row above is right above the input connector of the next
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* row.
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Example 1 panel chaining:
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+-----------------+-----------------+-------------------+
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| 64x32px PANEL 3 | 64x32px PANEL 2 | 64x32px PANEL 1 |
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| ------------ <-------- | ------------xx |
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| [OUT] | [IN] | [OUT] [IN] | [OUT] [ESP IN] |
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+--------|--------+-----------------+-------------------+
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| 64x32px|PANEL 4 | 64x32px PANEL 5 | 64x32px PANEL 6 |
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| \|/ ----------> | -----> |
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| [IN] [OUT] | [IN] [OUT] | [IN] [OUT] |
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+-----------------+-----------------+-------------------+
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Example 1 configuration:
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#define PANEL_RES_X 64 // Number of pixels wide of each INDIVIDUAL panel module.
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#define PANEL_RES_Y 32 // Number of pixels tall of each INDIVIDUAL panel module.
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#define NUM_ROWS 2 // Number of rows of chained INDIVIDUAL PANELS
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#define NUM_COLS 3 // Number of INDIVIDUAL PANELS per ROW
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virtualDisp(dma_display, NUM_ROWS, NUM_COLS, PANEL_RES_X, PANEL_RES_Y, true, true);
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= 192x64 px virtual display, with the top left of panel 3 being pixel co-ord (0,0)
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==========================================================
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Example 2 panel chaining:
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+-------------------+
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| 64x32px PANEL 1 |
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| ----------------- |
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| [OUT] [ESP IN] |
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+-------------------+
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| 64x32px PANEL 2 |
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| |
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| [IN] [OUT] |
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+-------------------+
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| 64x32px PANEL 3 |
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| [OUT] [IN] |
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+-------------------+
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| 64x32px PANEL 4 |
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| [IN] [OUT] |
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+-------------------+
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Example 2 configuration:
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#define PANEL_RES_X 64 // Number of pixels wide of each INDIVIDUAL panel module.
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#define PANEL_RES_Y 32 // Number of pixels tall of each INDIVIDUAL panel module.
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#define NUM_ROWS 4 // Number of rows of chained INDIVIDUAL PANELS
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#define NUM_COLS 1 // Number of INDIVIDUAL PANELS per ROW
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virtualDisp(dma_display, NUM_ROWS, NUM_COLS, PANEL_RES_X, PANEL_RES_Y, true, true);
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virtualDisp(dma_display, NUM_ROWS, NUM_COLS, PANEL_RES_X, PANEL_RES_Y, true, true);
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= 128x64 px virtual display, with the top left of panel 1 being pixel co-ord (0,0)
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==========================================================
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Example 3 panel chaining (bottom up):
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+-----------------+-----------------+
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| 64x32px PANEL 4 | 64x32px PANEL 3 |
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| <---------- |
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| [OUT] [IN] | [OUT] [in] |
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+-----------------+-----------------+
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| 64x32px PANEL 1 | 64x32px PANEL 2 |
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| ----------> |
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| [ESP IN] [OUT] | [IN] [OUT] |
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+-----------------+-----------------+
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Example 1 configuration:
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#define PANEL_RES_X 64 // Number of pixels wide of each INDIVIDUAL panel module.
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#define PANEL_RES_Y 32 // Number of pixels tall of each INDIVIDUAL panel module.
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#define NUM_ROWS 2 // Number of rows of chained INDIVIDUAL PANELS
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#define NUM_COLS 2 // Number of INDIVIDUAL PANELS per ROW
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virtualDisp(dma_display, NUM_ROWS, NUM_COLS, PANEL_RES_X, PANEL_RES_Y, true, false);
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= 128x64 px virtual display, with the top left of panel 4 being pixel co-ord (0,0)
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*/
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#define PANEL_RES_X 64 // Number of pixels wide of each INDIVIDUAL panel module.
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#define PANEL_RES_Y 32 // Number of pixels tall of each INDIVIDUAL panel module.
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#define NUM_ROWS 2 // Number of rows of chained INDIVIDUAL PANELS
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#define NUM_COLS 2 // Number of INDIVIDUAL PANELS per ROW
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#define PANEL_CHAIN NUM_ROWS*NUM_COLS // total number of panels chained one to another
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// library includes
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#include <ESP32-VirtualMatrixPanel-I2S-DMA.h>
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// placeholder for the matrix object
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MatrixPanel_I2S_DMA *dma_display = nullptr;
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// placeholder for the virtual display object
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VirtualMatrixPanel *virtualDisp = nullptr;
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/******************************************************************************
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* Setup!
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******************************************************************************/
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void setup() {
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delay(2000);
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Serial.begin(115200);
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Serial.println(""); Serial.println(""); Serial.println("");
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Serial.println("*****************************************************");
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Serial.println(" HELLO !");
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Serial.println("*****************************************************");
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/******************************************************************************
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* Create physical DMA panel class AND virtual (chained) display class.
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******************************************************************************/
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/*
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The configuration for MatrixPanel_I2S_DMA object is held in HUB75_I2S_CFG structure,
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All options has it's predefined default values. So we can create a new structure and redefine only the options we need
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Please refer to the '2_PatternPlasma.ino' example for detailed example of how to use the MatrixPanel_I2S_DMA configuration
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*/
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HUB75_I2S_CFG mxconfig(
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PANEL_RES_X, // module width
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PANEL_RES_Y, // module height
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PANEL_CHAIN // chain length
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);
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//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
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// Sanity checks
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if (NUM_ROWS <= 1) {
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Serial.println(F("There is no reason to use the VirtualDisplay class for a single horizontal chain and row!"));
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}
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// OK, now we can create our matrix object
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dma_display = new MatrixPanel_I2S_DMA(mxconfig);
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// let's adjust default brightness to about 75%
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dma_display->setBrightness8(192); // range is 0-255, 0 - 0%, 255 - 100%
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// Allocate memory and start DMA display
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if( not dma_display->begin() )
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Serial.println("****** !KABOOM! I2S memory allocation failed ***********");
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// create VirtualDisplay object based on our newly created dma_display object
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virtualDisp = new VirtualMatrixPanel((*dma_display), NUM_ROWS, NUM_COLS, PANEL_RES_X, PANEL_RES_Y, true);
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// So far so good, so continue
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virtualDisp->fillScreen(virtualDisp->color444(0, 0, 0));
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virtualDisp->drawDisplayTest(); // draw text numbering on each screen to check connectivity
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delay(3000);
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Serial.println("Chain of 64x32 panels for this example:");
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Serial.println("+--------+---------+");
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Serial.println("| 4 | 3 |");
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Serial.println("| | |");
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Serial.println("+--------+---------+");
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Serial.println("| 1 | 2 |");
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Serial.println("| (ESP) | |");
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Serial.println("+--------+---------+");
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virtualDisp->setFont(&FreeSansBold12pt7b);
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virtualDisp->setTextColor(virtualDisp->color565(0, 0, 255));
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virtualDisp->setTextSize(2);
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virtualDisp->setCursor(10, virtualDisp->height()-20);
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// Red text inside red rect (2 pix in from edge)
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virtualDisp->print("1234");
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virtualDisp->drawRect(1,1, virtualDisp->width()-2, virtualDisp->height()-2, virtualDisp->color565(255,0,0));
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// White line from top left to bottom right
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virtualDisp->drawLine(0,0, virtualDisp->width()-1, virtualDisp->height()-1, virtualDisp->color565(255,255,255));
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}
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void loop() {
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} // end loop
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