upload

.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

include/TCP.h

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+#ifndef TCP_H
+#define TCP_H
+
+#include <WiFi.h>
+#include <WiFiClient.h>
+#include <TFT_eSPI.h>
+#include <SPI.h>
+
+class TCP {
+    public:
+        // Constructor
+        TCP(const char* ssid, const char* password, const char* host, uint16_t port);
+
+        // Methods to connect to WiFi and send data
+        void connectWiFi(TFT_eSPI& tft);
+        void testConnection();
+        void sendData(float& potData, int& emoteIndex);
+
+
+    private:
+        const char* ssid;      // WiFi SSID
+        const char* password;  // WiFi password
+        const char* host;      // Host IP address
+        uint16_t port;         // Port number
+        WiFiClient client;     // WiFi client object
+        TFT_eSPI* tft;
+};
+
+#endif // TCP_H
+

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:esp32dev]
+platform = espressif32
+board = esp32dev
+framework = arduino
+monitor_speed = 115200
+lib_deps = 
+	bodmer/TFT_eSPI@^2.5.43
+	bitbank2/PNGdec@^1.0.2

src/TCP.cpp

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+#include "TCP.h"
+
+// Constructor
+TCP::TCP(const char* ssid, const char* password, const char* host, uint16_t port)
+    : ssid(ssid), password(password), host(host), port(port) {
+}
+
+// Connect to WiFi
+void TCP::connectWiFi(TFT_eSPI& tf) {
+    // Set pointer to tft
+    tft = &tf;
+    tft->setCursor(0, 0, 2);
+    tft->setTextColor(TFT_WHITE,TFT_BLACK);
+    tft->println("Connecting to: ");
+    tft->print(ssid);
+    delay(1000);
+
+    WiFi.begin(ssid, password);
+
+    while (WiFi.status() != WL_CONNECTED ) {
+        delay(1000);
+    }
+
+    tft->println("\n\nConnected to WiFi!");
+    delay(1000);
+    tft->println(WiFi.localIP());
+    delay(1000);
+}
+
+void TCP::testConnection(){
+    tft->println("\nPolling server..");
+    int yPos = tft->getCursorY(); // Store the current Y position
+    while (!client.connected()) {
+        tft->setCursor(0, yPos);
+        tft->fillRect(0, yPos, tft->width(), 32, TFT_BLACK);
+        delay(50);
+        if (client.connect(host, port)) {
+            tft->setTextColor(TFT_GREEN);
+            tft->print("\nCONNECTED");
+            delay(2000);
+            tft->fillScreen(TFT_BLACK);
+        } else {
+            tft->setTextColor(TFT_RED);
+            tft->println("\nFAILED");
+            delay(250);
+        }
+    }
+}
+
+// Send array of floats
+void TCP::sendData(float& potData, int& emoteIndex) {
+
+    if(client.connect(host, port)){
+        // 1 float & 1 integer = 4 + 4 bytes (32-bit)
+        // Create buffer
+        uint8_t data[8];
+
+        // Convert values to bytes
+        memcpy(&data[0], &potData, sizeof(float));
+        memcpy(&data[4], &emoteIndex, sizeof(int));
+
+        // Send bytes to server
+        size_t bytesSent = client.write(data, sizeof(data));
+
+    } else {
+        tft->setTextColor(TFT_BLACK, TFT_RED);
+        tft->drawCentreString("LOST", 62, 80, 1);
+        delay(1000);
+        return;
+    }
+}
+    

src/main.cpp

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+/*
+  beta 2024 
+  esp32 controllers
+
+  pin defenitions:
+  #define TFT_MOSI 23 // In some display driver board, it might be written as "SDA" and so on.
+  #define TFT_SCLK 18
+  #define TFT_CS   33  // Chip select control pin
+  #define TFT_DC   26  // Data Command control pin
+  #define TFT_RST  25  // Reset pin (could connect to Arduino RESET pin)
+
+  driver:
+  #define ST7735_DRIVER
+ */
+
+#include <TFT_eSPI.h> // Hardware-specific library
+#include <SPI.h>
+
+#include <PNGdec.h>
+#include "icon_clown.h" // Image is stored here in an 8-bit array
+#include "TCP.h"
+
+#define potPin 13 // Potentiometer Pin
+#define MAX_IMAGE_WIDTH 240 // Adjust for your images
+
+// Define some colors to match individual emotions
+const uint16_t emotionColors[] = {
+  0xFFE0,  // HAPPY = YELLOW
+  0x001F,  // SAD = BLUE
+  0xF800,  // ANGRY = RED
+  0xFA60,  // FEAR = ORANGE
+  0xF8FF,  // SURPRISED = PURPLE
+  0x07E0,  // DISGUST = GREEN
+  0xFFFF   // NEUTRAL = WHITE
+};
+
+enum Emotion {
+  HAPPY,
+  SAD,
+  ANGRY,
+  FEAR,
+  SURPRISED,
+  DISGUST,
+  NEUTRAL
+};
+
+float potData = 0;
+Emotion emote;
+int screen_width, screen_height;
+TCP tcp("VM9093853", "kfrzuk8UngxyytUz", "192.168.0.169", 12345);
+PNG png; 
+TFT_eSPI tft = TFT_eSPI();  
+
+void pngDraw(PNGDRAW *pDraw) {
+  uint16_t lineBuffer[MAX_IMAGE_WIDTH];          // Line buffer for rendering
+  uint8_t  maskBuffer[1 + MAX_IMAGE_WIDTH / 8];  // Mask buffer
+
+  png.getLineAsRGB565(pDraw, lineBuffer, PNG_RGB565_BIG_ENDIAN, 0xffffffff);
+
+  if (png.getAlphaMask(pDraw, maskBuffer, 255)) {
+    // Note: pushMaskedImage is for pushing to the TFT and will not work pushing into a sprite
+    tft.pushMaskedImage(0, 0 + pDraw->y, pDraw->iWidth, 1, lineBuffer, maskBuffer);
+  }
+}
+
+void setupWiFi(){
+  tcp.connectWiFi(tft);
+
+  tcp.testConnection();
+
+  int emotionIndex = static_cast<int>(emote);
+  tcp.sendData(potData, emotionIndex);
+}
+
+void drawImage(){
+  // Image sizes will be 128x128, a collection of 10~ per controller
+  uint16_t pngw = 0, pngh = 0;
+
+  int16_t rc = png.openFLASH((uint8_t *)bob, sizeof(bob), pngDraw);
+
+  if (rc == PNG_SUCCESS) {
+    pngw = png.getWidth();
+    pngh = png.getHeight();
+    tft.startWrite();
+    rc = png.decode(NULL, 0);
+    tft.endWrite();
+  }
+}
+
+void drawText(String& emotionText, int& i){
+  tft.drawCentreString(emotionText, screen_width / 2, 8,  1);
+  
+  float sinVal = sin(i * 0.05);    // Sine output between -1 and 1
+  float mappedVal = (50 * sinVal) + 50; // Map it to between 1 and 100
+  String ps = String(mappedVal, 2);
+  ps.concat("%");
+  tft.drawCentreString(ps, screen_width / 2, screen_height - (screen_height / 6),  1);
+
+  int emotionIndex = static_cast<int>(emote);
+  tcp.sendData(mappedVal, emotionIndex);
+  i++;
+}
+
+void setupEmotion(String& emotionText){
+  switch (emote) {
+    case HAPPY:      emotionText = "HAPPY"; break;
+    case SAD:        emotionText = "SAD"; break;
+    case ANGRY:      emotionText = "ANGRY"; break;
+    case FEAR:       emotionText = "FEAR"; break;
+    case SURPRISED:  emotionText = "SURPRISED"; break;
+    case DISGUST:    emotionText = "DISGUST"; break;
+    case NEUTRAL:    emotionText = "NEUTRAL"; break;
+  }
+
+  tft.setTextColor(emotionColors[emote],TFT_BLACK);  
+
+  tft.setTextSize(2);
+}
+
+
+void setup(void) {
+  // Set emotion
+  emote = Emotion::NEUTRAL;
+
+  // Setup screen & serial
+  tft.init();
+  tft.setRotation(0);
+  tft.fillScreen(TFT_BLACK);
+
+  Serial.begin(115200);
+
+  screen_height = tft.height();
+  screen_width = tft.width();
+
+  tft.fillScreen(TFT_BLACK);
+
+  delay(2000);
+
+  setupWiFi();
+}
+
+void loop() {
+  tft.setCursor(0, 0, 2);
+
+  // Sin value
+  static int i = 0;  
+  
+  // Display the emotion text
+  String emotionText;
+
+  setupEmotion(emotionText);
+  drawImage();
+  drawText(emotionText, i);
+
+  delay(60);
+}
+
+
+

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