128X64 MatrixPanel Problem (not resolved)

[dowandev]

Hello, when I apply the code attached below, some parts are blank like in the picture. How do I modify or wire the code?

// 1) Include key virtual display library // VERSION 3.0.7

include

include <Fonts/FreeMono9pt7b.h>

// 2) Set configuration

define PANEL_RES_X 128 // Number of pixels wide of each INDIVIDUAL panel module.

define PANEL_RES_Y 64 // Number of pixels tall of each INDIVIDUAL panel module.

define NUM_ROWS 1 // Number of rows of chained INDIVIDUAL PANELS

define NUM_COLS 1 // Number of INDIVIDUAL PANELS per ROW

define PANEL_CHAIN NUM_ROWS *NUM_COLS // total number of panels chained one to another

/* Configure the serpetine chaining approach. Options are: CHAIN_NONE, CHAIN_TOP_LEFT_DOWN, CHAIN_TOP_RIGHT_DOWN, CHAIN_BOTTOM_LEFT_UP, CHAIN_BOTTOM_RIGHT_UP, CHAIN_TOP_LEFT_DOWN_ZZ, /// ZigZag chaining. Might need a big ass cable to do this, all panels right way up. CHAIN_TOP_RIGHT_DOWN_ZZ, CHAIN_BOTTOM_RIGHT_UP_ZZ, CHAIN_BOTTOM_LEFT_UP_ZZ

The location (i.e. 'TOP_LEFT', 'BOTTOM_RIGHT') etc. refers to the starting point where the ESP32 is located, and how the chain of panels will 'roll out' from there.

In this example we're using 'CHAIN_BOTTOM_LEFT_UP' which would look like this in the real world:

Chain of 4 x 64x32 panels with the ESP at the CHAIN_TOP_LEFT_DOWN:

+---------+---------+	4	3

+---------+---------+ | 1 | 2 | | (ESP) | | +---------+---------+

*/

define VIRTUAL_MATRIX_CHAIN_TYPE CHAIN_TOP_RIGHT_DOWN

// 3) Create the runtime objects to use

// placeholder for the matrix object MatrixPanel_I2S_DMA *dma_display = nullptr;

// placeholder for the virtual display object VirtualMatrixPanel *virtualDisp = nullptr;

/**

• Setup! **/ void setup() {

  delay(2000); Serial.begin(115200);

  /**

  • Create physical DMA panel class AND virtual (chained) display class. **/

  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

  // Sanity checks if (NUM_ROWS <= 1){ Serial.println(F("There is no reason to use the VirtualDisplay class for a single horizontal chain and row!")); }

  // OK, now we can create our matrix object dma_display = new MatrixPanel_I2S_DMA(mxconfig);

  // dma_display->setRotation(1);

  // let's adjust default brightness to about 75% dma_display->setBrightness8(192); // range is 0-255, 0 - 0%, 255 - 100%

  // Allocate memory and start DMA display if (not dma_display->begin()) Serial.println("** !KABOOM! I2S memory allocation failed ***");

  // create VirtualDisplay object based on our newly created dma_display object virtualDisp = new VirtualMatrixPanel((*dma_display), NUM_ROWS, NUM_COLS, PANEL_RES_X, PANEL_RES_Y, VIRTUAL_MATRIX_CHAIN_TYPE);

  // virtualDisp->setPhysicalPanelScanRate(NORMAL_ONE_SIXTEEN); // virtualDisp->setPhysicalPanelScanRate(FOUR_SCAN_16PX_HIGH);

  // So far so good, so continue virtualDisp->fillScreen(virtualDisp->color444(0, 0, 0)); // virtualDisp->drawDisplayTest(); // draw text numbering on each screen to check connectivity

  // delay(1000);

  virtualDisp->setTextColor(virtualDisp->color565(0, 0, 255));

  // Red text inside red rect (2 pix in from edge) virtualDisp->drawRect(0, 0, virtualDisp->width(), virtualDisp->height(), virtualDisp->color565(255, 0, 0));

  // White line from top left to bottom right // virtualDisp->drawLine(0, 0, virtualDisp->width() - 1, virtualDisp->height() - 1, virtualDisp->color565(255, 255, 255));

  // virtualDisp->drawDisplayTest(); // re draw text numbering on each screen to check connectivity

  virtualDisp->setTextWrap(false);

  virtualDisp->setCursor(1, 1); virtualDisp->print("ABCDEFGHIJ"); virtualDisp->setCursor(1, 8); virtualDisp->print("1234567890"); virtualDisp->setCursor(1, 16); virtualDisp->print("ABCDEFGHIJ"); virtualDisp->setCursor(1, 24); virtualDisp->print("1234567890"); virtualDisp->setCursor(1, 32); virtualDisp->print("ABCDEFGHIJ"); virtualDisp->setCursor(1, 40); virtualDisp->print("1234567890"); virtualDisp->setCursor(1, 48); virtualDisp->print("ABCDEFGHIJ");

}

void loop(){

}

[dowandev]

@mrfaptastic Sorry, Can you help me?

[board707]

Single geometry of the matrix like "128x64" is not enough to manage it to work. We need a more detail. Is it a scan32 matrix? Or scan 16 or scan8? What the chips are used as drivers?

[dowandev]

@board707 It is 1/32 scan and uses ICND2038S chip

Product Link : https://aliexpress.com/item/32957597916.html?spm=a2g0o.order_list.order_list_main.5.4834140f7jcQe4&gatewayAdapt=glo2kor

[mrcodetastic]

Can you please try with the simpletestshapes sketch?

[dowandev]

@mrfaptastic

I think the problem was caused by not uncommenting //mxconfig.gpio.e = 18. Please tell me how to apply //mxconfig.gpio.e = 18; to BitMapIcons.

Apply the code below to make it look like the picture. I don't know if this is displayed well, but it is displayed normally. But in BItMapIcons //mxconfig.gpio.e = -1; When I uncomment // Assign a pin if you have a 64x64 panel and apply, I get a Compilation error: 'mxconfig' does not name a type error.

[mrcodetastic]

Looks like there's a bug with the VirtualMatrixPanel class when using it with a single panel (which there is no need to use this class for), which I'll need to investigate.

Now using the underlying library to draw directly to the panel - looks like it works for me. I can't understand your gpio.e compile error comment unless you provide the actualy sketch code.