add new

.gitignore

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+.pio
+.vscode/.browse.c_cpp.db*
+.vscode/c_cpp_properties.json
+.vscode/launch.json
+.vscode/ipch

.vscode/extensions.json

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+{
+    // See http://go.microsoft.com/fwlink/?LinkId=827846
+    // for the documentation about the extensions.json format
+    "recommendations": [
+        "platformio.platformio-ide"
+    ],
+    "unwantedRecommendations": [
+        "ms-vscode.cpptools-extension-pack"
+    ]
+}

include/README

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+
+This directory is intended for project header files.
+
+A header file is a file containing C declarations and macro definitions
+to be shared between several project source files. You request the use of a
+header file in your project source file (C, C++, etc) located in `src` folder
+by including it, with the C preprocessing directive `#include'.
+
+```src/main.c
+
+#include "header.h"
+
+int main (void)
+{
+ ...
+}
+```
+
+Including a header file produces the same results as copying the header file
+into each source file that needs it. Such copying would be time-consuming
+and error-prone. With a header file, the related declarations appear
+in only one place. If they need to be changed, they can be changed in one
+place, and programs that include the header file will automatically use the
+new version when next recompiled. The header file eliminates the labor of
+finding and changing all the copies as well as the risk that a failure to
+find one copy will result in inconsistencies within a program.
+
+In C, the usual convention is to give header files names that end with `.h'.
+It is most portable to use only letters, digits, dashes, and underscores in
+header file names, and at most one dot.
+
+Read more about using header files in official GCC documentation:
+
+* Include Syntax
+* Include Operation
+* Once-Only Headers
+* Computed Includes
+
+https://gcc.gnu.org/onlinedocs/cpp/Header-Files.html

lib/README

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+
+This directory is intended for project specific (private) libraries.
+PlatformIO will compile them to static libraries and link into executable file.
+
+The source code of each library should be placed in an own separate directory
+("lib/your_library_name/[here are source files]").
+
+For example, see a structure of the following two libraries `Foo` and `Bar`:
+
+|--lib
+|  |
+|  |--Bar
+|  |  |--docs
+|  |  |--examples
+|  |  |--src
+|  |     |- Bar.c
+|  |     |- Bar.h
+|  |  |- library.json (optional, custom build options, etc) https://docs.platformio.org/page/librarymanager/config.html
+|  |
+|  |--Foo
+|  |  |- Foo.c
+|  |  |- Foo.h
+|  |
+|  |- README --> THIS FILE
+|
+|- platformio.ini
+|--src
+   |- main.c
+
+and a contents of `src/main.c`:
+```
+#include <Foo.h>
+#include <Bar.h>
+
+int main (void)
+{
+  ...
+}
+
+```
+
+PlatformIO Library Dependency Finder will find automatically dependent
+libraries scanning project source files.
+
+More information about PlatformIO Library Dependency Finder
+- https://docs.platformio.org/page/librarymanager/ldf.html

platformio.ini

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+; PlatformIO Project Configuration File
+;
+;   Build options: build flags, source filter
+;   Upload options: custom upload port, speed and extra flags
+;   Library options: dependencies, extra library storages
+;   Advanced options: extra scripting
+;
+; Please visit documentation for the other options and examples
+; https://docs.platformio.org/page/projectconf.html
+
+[env:nodemcu-32s2]
+platform = espressif32
+board = nodemcu-32s2
+board_build.mcu = esp32
+framework = arduino
+monitor_speed = 115200
+lib_deps = 
+	mrfaptastic/ESP32 HUB75 LED MATRIX PANEL DMA Display@^3.0.12
+	https://github.com/mrcodetastic/ESP32-HUB75-MatrixPanel-DMA.git
+	adafruit/Adafruit GFX Library@^1.11.10

src/main.cpp

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+//#include </ESP32-HUB75-MatrixPanel-DMA-master/src/ESP32-HUB75-MatrixPanel-I2S-DMA.h>
+#include <ESP32-VirtualMatrixPanel-I2S-DMA.h>
+#include <Arduino.h>
+#include <WiFi.h>
+#include <WebServer.h>
+#include <WiFiUdp.h>
+#include <HTTPClient.h>
+const char* ssid = "VSMI-Guest";
+const char* password = "h3ll0vsmi";
+
+#define R1_PIN 25
+#define G1_PIN 26
+#define B1_PIN 27
+#define R2_PIN 14
+#define G2_PIN 12
+#define B2_PIN 13
+#define A_PIN 23
+#define B_PIN 22 // Changed from library default
+#define C_PIN 5
+#define D_PIN 17
+#define E_PIN 32 // required for 1/32 scan panels, like 64x64px. Any available pin would do, i.e. IO32
+#define LAT_PIN 4
+#define OE_PIN 15
+#define CLK_PIN 16
+
+
+// Configure for your panel(s) as appropriate!
+#define PANEL_WIDTH 64
+#define PANEL_HEIGHT 64  
+#define PANELS_NUMBER 1
+
+#define PANE_WIDTH PANEL_WIDTH * PANELS_NUMBER
+#define PANE_HEIGHT PANEL_HEIGHT
+
+#define MAX_UDP_SIZE 1460
+WiFiUDP udp;
+unsigned int localUdpPort = 5000;
+const int bufferSize = PANE_WIDTH*PANE_HEIGHT*2;  // Adjust based on your data size
+char incomingPacket[bufferSize];  // Buffer for incoming packets
+uint16_t pixelData[PANE_WIDTH*PANE_HEIGHT];  // Assuming 2 bytes per RGB565 pixel
+
+// Cấu trúc Pixel
+struct Pixel {
+    uint16_t color;
+};
+#define PIXEL_ENTRY_SIZE 5
+#define NUM_PIXELS PANE_WIDTH*PANE_HEIGHT
+// Biến trạng thái
+int dataOffset = 0;
+bool dataComplete = false;
+uint16_t arr[PANE_HEIGHT*PANE_WIDTH] PROGMEM;
+MatrixPanel_I2S_DMA *dma_display = nullptr;
+//Another way of creating config structure
+//Custom pin mapping for all pins
+HUB75_I2S_CFG::i2s_pins _pins={R1_PIN, G1_PIN, B1_PIN, R2_PIN, G2_PIN, B2_PIN, A_PIN, B_PIN, C_PIN, D_PIN, E_PIN, LAT_PIN, OE_PIN, CLK_PIN};
+HUB75_I2S_CFG mxconfig(
+            PANEL_WIDTH,   // width
+            PANEL_HEIGHT,   // height
+            PANELS_NUMBER,   // chain length
+           _pins,   // pin mapping
+  HUB75_I2S_CFG::FM6126A      // driver chip
+);
+
+Pixel pixels[PANE_WIDTH * PANE_HEIGHT];
+
+void rgb565_to_rgb888(uint16_t color, uint8_t &r, uint8_t &g, uint8_t &b) {
+  r = (color >> 8) & 0xF8;
+  g = (color >> 3) & 0xFC;
+  b = (color << 3) & 0xF8;
+}
+
+uint8_t tempBuffer[PANE_WIDTH * PANE_HEIGHT * 2];
+int receivedBytes = 0;  // Số byte đã nhận
+bool newFrame = true;
+
+void resetPixels() {
+    memset(pixels, 0, sizeof(pixels));
+    memset(tempBuffer, 0, sizeof(tempBuffer));
+    receivedBytes = 0;
+    dataComplete = false;
+}
+
+void receivePixels(char* packet, int length) {
+  if (newFrame) {
+      newFrame = false;
+      //dma_display->clearScreen();
+  }
+
+  if (receivedBytes + length > sizeof(tempBuffer)) {
+        length = sizeof(tempBuffer) - receivedBytes;  // Giới hạn độ dài
+  }
+  memcpy(tempBuffer + receivedBytes, packet, length);
+  receivedBytes += length;
+  // Kiểm tra xem toàn bộ dữ liệu có được nhận đầy đủ chưa
+    if (receivedBytes == PANE_WIDTH * PANE_HEIGHT * 2) {
+        //dma_display->clearScreen();
+        dataComplete = true;
+
+        // Xử lý dữ liệu khi đã nhận đầy đủ
+        int index = 0;
+        for (int i = 0; i < receivedBytes; i += 2) {
+            if (index < PANE_WIDTH * PANE_HEIGHT) {
+                uint16_t color = (tempBuffer[i] << 8) | tempBuffer[i + 1];
+                pixels[index].color = color;
+                index++;
+            }
+        }
+
+      
+
+        // Đặt lại bộ nhớ tạm và biến nhận bytes
+        memset(tempBuffer, 0, sizeof(tempBuffer));
+        receivedBytes = 0;
+        newFrame = true;
+    }
+}
+
+
+void displayPixels() {
+    for (int y = 0; y < PANE_HEIGHT; y++) {
+        for (int x = 0; x < PANE_WIDTH; x++) {
+            int index = (y * PANE_WIDTH + x);
+            uint16_t color = pixels[index].color;
+            if (color != 0) {
+                dma_display->drawPixel(x, y, color);
+            }
+            else{
+              dma_display->drawPixel(x, y, 0);
+            }
+            pixels[index].color = 0;
+        }
+    }
+}
+// void resetPixels() {
+//     for (int i = 0; i < PANE_WIDTH*PANE_HEIGHT; i++) {
+//         pixels[i].color = 0;  // Đặt màu về 0 hoặc màu nền khác
+//     }
+// }
+void setup() {
+  // put your setup code here, to run once:
+   Serial.begin(115200);
+    WiFi.begin(ssid, password);
+
+    while (WiFi.status() != WL_CONNECTED) {
+        delay(1000);
+        Serial.println("Connecting to WiFi...");
+    }
+
+    Serial.print("Connected to WiFi.");
+    Serial.println(WiFi.localIP());
+    udp.begin(localUdpPort);
+    dma_display = new MatrixPanel_I2S_DMA(mxconfig);
+    dma_display->begin(); // setup the LED matrix
+    dma_display->setBrightness8(15); //0-255
+    dma_display->clearScreen();  
+}
+
+void loop() {
+   int packetSize = udp.parsePacket();
+    if (packetSize) {
+        int len = udp.read(incomingPacket, MAX_UDP_SIZE);
+        if (len > 0) {
+            //Serial.print("Received packet of size ");
+            //Serial.println(len);
+            // appendData(incomingPacket, len);
+            receivePixels(incomingPacket, len);
+            // Nếu dữ liệu đầy đủ, hiển thị
+            if (dataComplete) {
+                displayPixels();
+                //Serial.print("complete");
+                dataComplete = false;  // Reset trạng thái
+                
+                // resetPixels();
+                //memset(pixelData, 0, sizeof(pixelData));
+            }
+        }
+    } else {
+        //Serial.println("No packet received");
+    }
+
+    // delay(200);
+}
+

test/README

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+
+This directory is intended for PlatformIO Test Runner and project tests.
+
+Unit Testing is a software testing method by which individual units of
+source code, sets of one or more MCU program modules together with associated
+control data, usage procedures, and operating procedures, are tested to
+determine whether they are fit for use. Unit testing finds problems early
+in the development cycle.
+
+More information about PlatformIO Unit Testing:
+- https://docs.platformio.org/en/latest/advanced/unit-testing/index.html