Station2

.gitignore

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+.DS_Store

Atom-matrix

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+#include <M5Atom.h>
+#include <BLEDevice.h>
+#include <BLEUtils.h>
+#include <BLEScan.h>
+#include <BLEAdvertisedDevice.h>
+#include <esp_now.h>
+#include <WiFi.h>
+#include <esp_wifi.h>
+
+// --- ตั้งค่าระยะที่ต้องการ ---
+const int RSSI_THRESHOLD = -45; 
+
+// หน่วงเวลาห้ามส่งซ้ำ (2000ms = 2 วินาที)
+const int COOLDOWN_TIME = 5000;  
+
+BLEUUID targetUUID = BLEUUID("1234");
+
+// MAC Address ของ Echo 
+uint8_t echoAddress[] = {0x90, 0x15, 0x06, 0xFD, 0xF2, 0xF8};
+
+// ✅ 
+int checkIcon[] = {
+    15, // หางสั้น (ซ้ายล่าง)
+    21, // จุดกลับตัว (ล่างสุด)
+    17, // เส้นเฉียงขึ้น
+    13, // เส้นเฉียงขึ้น
+    9   // ปลายหางยาว (ขวาบน)
+};
+
+BLEScan* pBLEScan;
+unsigned long lastTriggerTime = 0; 
+
+void setup() {
+    M5.begin(true, false, true); 
+    delay(10);
+
+    WiFi.mode(WIFI_STA);
+    if (esp_now_init() != ESP_OK) {
+        Serial.println("Error initializing ESP-NOW");
+        return;
+    }
+
+    esp_now_peer_info_t peerInfo;
+    memset(&peerInfo, 0, sizeof(peerInfo));
+    for (int i = 0; i < 6; i++) {
+        peerInfo.peer_addr[i] = echoAddress[i]; 
+    }
+    peerInfo.channel = 0;  
+    peerInfo.encrypt = false;
+
+    if (esp_now_add_peer(&peerInfo) != ESP_OK){
+        Serial.println("Failed to add peer");
+        return;
+    }
+
+    BLEDevice::init("");
+    pBLEScan = BLEDevice::getScan(); 
+    pBLEScan->setActiveScan(true);   
+    pBLEScan->setInterval(100);
+    pBLEScan->setWindow(99);
+
+    Serial.println("System Ready: Scanning...");
+    M5.dis.fillpix(0x0000FF); // เริ่มต้น: สีน้ำเงิน
+}
+
+void loop() {
+    M5.update();
+
+    //แก้: ใช้ Pointer (*) เพื่อแก้ Error เก่า
+    BLEScanResults *foundDevices = pBLEScan->start(1, false);
+
+    bool foundTarget = false;
+    int targetRSSI = -999;
+
+    for (int i = 0; i < foundDevices->getCount(); i++) {
+        BLEAdvertisedDevice device = foundDevices->getDevice(i);
+
+        // เช็ค UUID
+        if (device.haveServiceUUID() && device.isAdvertisingService(targetUUID)) {
+            targetRSSI = device.getRSSI();
+            Serial.printf("Target Found! RSSI: %d\n", targetRSSI);
+
+            if (targetRSSI > RSSI_THRESHOLD) {
+                foundTarget = true;
+            }
+        }
+    }
+
+    // --- ตัดสินใจ ---
+    if (foundTarget) {
+
+        // ---ติ๊กถูก (Checkmark) ---
+        M5.dis.clear(); // ล้างสีเดิมก่อน
+        for (int i = 0; i < 5; i++) {
+            M5.dis.drawpix(checkIcon[i], 0x00FF00); // วาดจุดสีเขียวตามแบบแปลน
+        }
+        // -------------------------------------------
+
+        // เช็ค Cooldown ก่อนส่งคำสั่ง
+        if (millis() - lastTriggerTime > COOLDOWN_TIME) {
+
+            Serial.println(">>> UNLOCK! Sending to Echo <<<");
+
+            uint8_t data = 1; 
+            esp_now_send(echoAddress, &data, sizeof(data));
+
+            lastTriggerTime = millis(); 
+        } 
+
+    } else {
+        // ไม่เจอ -> สีน้ำเงิน 🔵
+        M5.dis.fillpix(0x0000ff); 
+        Serial.println("Searching...");
+    }
+
+    pBLEScan->clearResults(); 
+}

Atom_echo/Atom_echo.ino

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+#include <M5Atom.h>
+#include <esp_now.h>
+#include <WiFi.h>
+#include <driver/i2s.h>
+#include <esp_wifi.h> // เพิ่มเพื่อบังคับ Channel
+
+#define CONFIG_I2S_BCK_PIN 19
+#define CONFIG_I2S_LRCK_PIN 33
+#define CONFIG_I2S_DATA_PIN 22
+#define CONFIG_I2S_DATA_IN_PIN 23
+
+// ตั้งค่า I2S
+void InitI2S() {
+    i2s_config_t i2s_config = {
+        .mode = (i2s_mode_t)(I2S_MODE_MASTER | I2S_MODE_TX),
+        .sample_rate = 44100,
+        .bits_per_sample = I2S_BITS_PER_SAMPLE_16BIT,
+        .channel_format = I2S_CHANNEL_FMT_RIGHT_LEFT,
+        .communication_format = I2S_COMM_FORMAT_I2S_MSB, // ใช้ MSB เสียงจะดีกว่า
+        .intr_alloc_flags = ESP_INTR_FLAG_LEVEL1,
+        .dma_buf_count = 8,
+        .dma_buf_len = 64
+    };
+    i2s_pin_config_t pin_config = {
+        .bck_io_num = CONFIG_I2S_BCK_PIN,
+        .ws_io_num = CONFIG_I2S_LRCK_PIN,
+        .data_out_num = CONFIG_I2S_DATA_PIN,
+        .data_in_num = CONFIG_I2S_DATA_IN_PIN
+    };
+    i2s_driver_install(I2S_NUM_0, &i2s_config, 0, NULL);
+    i2s_set_pin(I2S_NUM_0, &pin_config);
+    i2s_set_clk(I2S_NUM_0, 44100, I2S_BITS_PER_SAMPLE_16BIT, I2S_CHANNEL_MONO);
+}
+
+// สร้างเสียง Beep
+void PlayBeep(int freq, int duration_ms) {
+    size_t bytes_written;
+    int samples = 44100 * duration_ms / 1000;
+    int16_t *buffer = (int16_t *)malloc(samples * 2);
+    if (!buffer) return;
+
+    int period = 44100 / freq; 
+    int volume = 2000; 
+
+    for (int i = 0; i < samples; i++) {
+        if ((i % period) < (period / 2)) buffer[i] = volume;
+        else buffer[i] = -volume;
+    }
+
+    i2s_write(I2S_NUM_0, buffer, samples * 2, &bytes_written, portMAX_DELAY);
+    free(buffer);
+
+    // ล้างท่อเสียง
+    int16_t silence[1024] = {0};
+    for (int k = 0; k < 3; k++) {
+        i2s_write(I2S_NUM_0, silence, sizeof(silence), &bytes_written, portMAX_DELAY);
+    }
+}
+
+bool triggerSound = false;
+
+// Callback รับข้อมูล
+void OnDataRecv(const uint8_t * mac, const uint8_t *incomingData, int len) {
+    if (len > 0 && *incomingData == 1) {
+        triggerSound = true; 
+    }
+}
+
+void setup() {
+    M5.begin(true, false, true);
+    InitI2S();
+    Serial.begin(115200);
+
+    // 1. โชว์ MAC Address ครั้งเดียวพอ (ดูใน Serial Monitor)
+    WiFi.mode(WIFI_STA);
+    Serial.println("\n--------------------------------");
+    Serial.print("MY MAC ADDRESS:  ");
+    Serial.println(WiFi.macAddress());
+    Serial.println("--------------------------------");
+
+    // 2. ⚠️ บังคับ Channel 1 (เพื่อให้ตรงกับ Matrix) ⚠️
+    esp_wifi_set_channel(1, WIFI_SECOND_CHAN_NONE);
+
+    // 3. Test Sound
+    Serial.println("System Start: Testing Beep...");
+    M5.dis.drawpix(0, 0xFFFFFF); 
+    PlayBeep(2000, 100); 
+    M5.dis.drawpix(0, 0x0000FF);
+
+    if (esp_now_init() != ESP_OK) return;
+    esp_now_register_recv_cb(OnDataRecv);
+}
+
+void loop() {
+    M5.update();
+
+    // ปุ่มกดเทสเสียง
+    if (M5.Btn.wasPressed()) {
+        Serial.println("Button Clicked!");
+        triggerSound = true; 
+    }
+
+    // เมื่อได้รับคำสั่งจาก Matrix
+    if (triggerSound) {
+        M5.dis.drawpix(0, 0x00FF00); // สีเขียว
+
+        Serial.println("Matrix Command -> Beep!");
+        PlayBeep(1500, 100); 
+        delay(50);
+        PlayBeep(2500, 200); 
+
+        triggerSound = false; 
+        M5.dis.drawpix(0, 0x0000FF); // กลับเป็นน้ำเงิน
+    }
+}

M5Paper/M5Paper.ino

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+#include <M5EPD.h>
+
+// สร้าง Canvas 2 ใบ (ใบใหญ่=เมนู, ใบเล็ก=Status)
+M5EPD_Canvas canvas(&M5.EPD);        
+M5EPD_Canvas status_canvas(&M5.EPD); 
+
+int selectedChoice = 0;
+
+void drawMenu() {
+    canvas.createCanvas(540, 960); 
+
+    // Header
+    canvas.setTextSize(4);
+    canvas.drawString("What did you do?", 30, 50);
+
+    canvas.setTextSize(3);
+
+
+    // ข้อ 1
+    canvas.drawRect(0, 130, 540, 80, 15);
+    canvas.drawString("1. Walk 1000 steps", 30, 155); 
+    canvas.drawString("   --> 10 CCoin", 30, 185);
+
+    // ข้อ 2
+    canvas.drawRect(0, 230, 540, 80, 15);
+    canvas.drawString("2. Recycle bottle", 30, 255);
+    canvas.drawString("   --> 5 CCoin", 30, 285);
+
+    // ข้อ 3
+    canvas.drawRect(0, 330, 540, 80, 15);
+    canvas.drawString("3. Bike 1 km", 30, 355);
+    canvas.drawString("   --> 20 CCoin", 30, 385);
+
+    // ข้อ 4
+    canvas.drawRect(0, 430, 540, 80, 15);
+    canvas.drawString("4. Reuse cup", 30, 455);
+    canvas.drawString("   --> 5 CCoin", 30, 485);
+
+    canvas.fillRect(120, 550, 300, 100, 15);
+    canvas.setTextColor(0, 15); 
+    canvas.setTextSize(4);
+    canvas.drawString("Submit", 200, 585);
+
+    canvas.setTextColor(15, 0); 
+
+    canvas.pushCanvas(0, 0, UPDATE_MODE_GC16);
+}
+
+void updateStatus(String msg) {
+    status_canvas.createCanvas(540, 100); 
+    status_canvas.fillCanvas(0);          
+    status_canvas.setTextSize(3);
+    status_canvas.drawString("Status: " + msg, 20, 20);
+
+    status_canvas.pushCanvas(0, 700, UPDATE_MODE_DU4); 
+
+    Serial.print("Status: ");
+    Serial.println(msg);
+}
+
+void setup() {
+    M5.begin();
+
+    Serial.begin(115200);
+
+    M5.EPD.SetRotation(90); 
+    M5.EPD.Clear(true);
+    M5.TP.SetRotation(0); // หมุนระบบสัมผัสให้ตรงกัน
+
+    drawMenu();     
+}
+
+void loop() {
+    if (M5.TP.available()) {
+        if (!M5.TP.isFingerUp()) {
+            M5.TP.update();
+
+            // อ่านค่า X (0-540) และ Y (0-960)
+            int x = M5.TP.readFingerX(0);
+            int y = M5.TP.readFingerY(0);
+
+            Serial.printf("X: %d, Y: %d\n", x, y);
+
+            if (x >= 130 && x <= 229) {
+                selectedChoice = 1;
+                updateStatus("Selected: Walk");
+            }
+            else if (x >= 230 && x <= 329) {
+                selectedChoice = 2;
+                updateStatus("Selected: Recycle");
+            }
+            else if (x >= 330 && x <= 410) {
+                selectedChoice = 3;
+                updateStatus("Selected: Bike");
+            }
+            else if (x >= 430 && x <= 510) {
+                selectedChoice = 4;
+                updateStatus("Selected: Reuse Cup");
+            }
+            // ปุ่ม Submit (เช็ค X ให้อยู่ในกรอบ 120-420)
+            else if (x >= 550 && x <= 650 && y >= 120 && y <= 420) {
+                if (selectedChoice == 0) {
+                    updateStatus("Please select first!");
+                } else {
+                    updateStatus("Submitting...");
+                    delay(1000);
+                    updateStatus("Sent Successfully!");
+                    selectedChoice = 0;
+                }
+            }
+            delay(100);
+        }
+    }
+}

Station2-Core2/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 convention is to give header files names that end with `.h'.
+
+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