Update serial communication code: change COM port in read_rx.py and add ESP32 command interpretation in esp32_read.py

2025-04-23 11:50:26 +02:00
parent bd49b7949e
commit 2b7582808e
3 changed files with 158 additions and 1 deletions
--- a/Semaine_2/Projet_esp32/esp32_code/Projet_code/ESP32/ESP32.ino
+++ b/Semaine_2/Projet_esp32/esp32_code/Projet_code/ESP32/ESP32.ino
@@ -0,0 +1,111 @@
+#include <WiFi.h>
+#include <WebServer.h>
+#include "esp_wifi.h"
+
+const char* ssid = "ESP32-Louis";
+const char* password = "motdepasse";
+
+WebServer server(80);
+
+void handleRoot() {
+  digitalWrite(2,HIGH);
+  wifi_sta_list_t sta_list;
+  esp_wifi_ap_get_sta_list(&sta_list);
+
+  String page = "";
+  page += "<!DOCTYPE html>";
+  page += "<html>";
+  page += "<head>";
+  page += "<title>ESP32</title>";
+  page += "<meta charset=\"UTF-8\">";
+  page += "</head>";
+  page += "<body>";
+  page += "<h1>Appareils connectés à l'ESP32</h1>";
+  page += "<ul>";
+
+  page += "<ul>";
+
+  for (int i = 0; i < sta_list.num; i++) {
+    const wifi_sta_info_t& client = sta_list.sta[i];
+    char macStr[18];
+    snprintf(macStr, sizeof(macStr),
+             "%02X:%02X:%02X:%02X:%02X:%02X",
+             client.mac[0], client.mac[1], client.mac[2],
+             client.mac[3], client.mac[4], client.mac[5]);
+    page += "<li>MAC : ";
+    page += macStr;
+    page += "</li>";
+  }
+
+  page += "</ul>";
+  page += "<p>Nombre total : " + String(sta_list.num) + "</p>";
+
+  page += "</body></html>";
+
+  server.send(200, "text/html", page);
+  digitalWrite(2,LOW);
+}
+
+void onClientConnected(WiFiEvent_t event, WiFiEventInfo_t info) {
+  digitalWrite(2, HIGH);
+
+  const wifi_event_ap_staconnected_t* conn = reinterpret_cast<const wifi_event_ap_staconnected_t*>(&info);
+
+
+  byte packet[11];  // 2 header + 1 code + 6 MAC + 1 fin
+  packet[0] = 0x02;
+  packet[1] = 0x02;
+  packet[2] = 0x01;
+
+  // Copier l'adr MAC dans le tableau
+  memcpy(&packet[3], conn->mac, 6);
+
+  packet[9] = 0x03;
+
+  Serial.write(packet, sizeof(packet));
+  digitalWrite(2, LOW);
+}
+
+void onClientDisconnected(WiFiEvent_t event, WiFiEventInfo_t info) {
+  digitalWrite(2, HIGH);
+
+  const wifi_event_ap_stadisconnected_t* disc = reinterpret_cast<const wifi_event_ap_stadisconnected_t*>(&info);
+
+  byte packet[11]; 
+  packet[0] = 0x02;
+  packet[1] = 0x02;
+  packet[2] = 0x00;
+
+  memcpy(&packet[3], disc->mac, 6);
+  packet[9] = 0x03;
+
+  Serial.write(packet, sizeof(packet));
+  digitalWrite(2, LOW);
+}
+
+void setup() {
+  Serial.begin(115200);
+  if (!WiFi.softAP(ssid, password)) {
+    byte packet[] = {0x02, 0x01, 0x00, 0x03};
+    Serial.write(packet, sizeof(packet));
+  }
+
+  WiFi.onEvent(onClientConnected, ARDUINO_EVENT_WIFI_AP_STACONNECTED);
+  WiFi.onEvent(onClientDisconnected, ARDUINO_EVENT_WIFI_AP_STADISCONNECTED);
+
+  delay(1000);  // Donne un peu de temps pour démarrer le WiFi
+
+
+  server.on("/", handleRoot);
+  server.begin();
+
+  pinMode(2, OUTPUT);
+
+  byte packet[] = {0x02, 0x01, 0x01, 0x03};
+  Serial.write(packet, sizeof(packet));
+
+}
+
+void loop() {
+  server.handleClient();
+}
--- a/Semaine_2/Projet_esp32/esp32_code/Projet_code/esp32_read.py
+++ b/Semaine_2/Projet_esp32/esp32_code/Projet_code/esp32_read.py
@@ -0,0 +1,46 @@
+import serial
+
+def format_mac(mac_bytes):
+    return ":".join(f"{b:02X}" for b in mac_bytes)
+
+def interpret_command(data):
+    if len(data) == 10 and data[0] == 0x02 and data[1] == 0x02 and data[-1] == 0x03:
+        cmd_type = data[2]
+        mac = data[3:9]
+        if cmd_type == 0x01:
+            return f"[+] Appareil connecté : {format_mac(mac)}"
+        elif cmd_type == 0x00:
+            return f"[-] Appareil déconnecté : {format_mac(mac)}"
+        else:
+            return f"[?] Commande inconnue : {data.hex()}"
+    elif len(data) == 4 and data[0] == 0x02 and data[1] == 0x01 and data[-1] == 0x03:
+        return "[*] Démarrage ESP32"
+    else:
+        return "[!] Donnée non reconnue"
+
+def main():
+    port = "COM5"  # Remplace par ton port série (ex. /dev/ttyUSB0 sous Linux)
+    baudrate = 115200
+
+    with serial.Serial(port, baudrate, timeout=1) as ser:
+        print(f"Lecture sur {port} à {baudrate} bauds...\n")
+        buffer = bytearray()
+
+        while True:
+            byte = ser.read()
+            if not byte:
+                continue
+
+            buffer += byte
+
+            # Si on détecte le début (0x02) et fin (0x03), on traite
+            if buffer[0] == 0x02 and 0x03 in buffer:
+                end_index = buffer.index(0x03)
+                packet = buffer[:end_index + 1]
+                buffer = buffer[end_index + 1:]
+
+                print("Reçu :", ' '.join(f'{b:02X}' for b in packet))
+                print("↳", interpret_command(packet), "\n")
+
+if __name__ == "__main__":
+    main()