forked from tanchou/Verilog
Add WiFi access point functionality and client management to ESP32 code
This commit is contained in:
Gamenight77
106
Semaine_2/Projet_esp32/esp32_code/Wifi_ap/Wifi_ap.ino
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106
Semaine_2/Projet_esp32/esp32_code/Wifi_ap/Wifi_ap.ino
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#include <WiFi.h>
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#include <WebServer.h>
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#include "esp_wifi.h"
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const char* ssid = "ESP32-Louis";
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const char* password = "motdepasse";
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WebServer server(80);
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void handleRoot() {
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digitalWrite(2,HIGH);
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wifi_sta_list_t sta_list;
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esp_wifi_ap_get_sta_list(&sta_list);
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String page = "";
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page += "<!DOCTYPE html>";
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page += "<html>";
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page += "<head>";
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page += "<title>ESP32</title>";
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page += "<meta charset=\"UTF-8\">";
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page += "</head>";
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page += "<body>";
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page += "<h1>Appareils connectés à l'ESP32</h1>";
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page += "<ul>";
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page += "<ul>";
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for (int i = 0; i < sta_list.num; i++) {
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const wifi_sta_info_t& client = sta_list.sta[i];
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char macStr[18];
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snprintf(macStr, sizeof(macStr),
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"%02X:%02X:%02X:%02X:%02X:%02X",
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client.mac[0], client.mac[1], client.mac[2],
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client.mac[3], client.mac[4], client.mac[5]);
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page += "<li>MAC : ";
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page += macStr;
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page += "</li>";
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}
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page += "</ul>";
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page += "<p>Nombre total : " + String(sta_list.num) + "</p>";
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page += "</body></html>";
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server.send(200, "text/html", page);
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digitalWrite(2,LOW);
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}
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void onClientConnected(WiFiEvent_t event, WiFiEventInfo_t info) {
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digitalWrite(2,HIGH);
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wifi_sta_list_t sta_list;
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esp_wifi_ap_get_sta_list(&sta_list);
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for (int i = 0; i < sta_list.num; i++) {
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const wifi_sta_info_t& client = sta_list.sta[i];
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char macStr[18];
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snprintf(macStr, sizeof(macStr),
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"%02X:%02X:%02X:%02X:%02X:%02X",
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client.mac[0], client.mac[1], client.mac[2],
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client.mac[3], client.mac[4], client.mac[5]);
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Serial.print("Adresse MAC : ");
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Serial.println(macStr);
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}
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digitalWrite(2,LOW);
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}
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void onClientDisconnected(WiFiEvent_t event, WiFiEventInfo_t info) {
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digitalWrite(2,HIGH);
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wifi_sta_list_t sta_list;
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esp_wifi_ap_get_sta_list(&sta_list);
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for (int i = 0; i < sta_list.num; i++) {
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const wifi_sta_info_t& client = sta_list.sta[i];
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char macStr[18];
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snprintf(macStr, sizeof(macStr),
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"%02X:%02X:%02X:%02X:%02X:%02X",
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client.mac[0], client.mac[1], client.mac[2],
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client.mac[3], client.mac[4], client.mac[5]);
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Serial.print("",macStr);
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}
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digitalWrite(2,LOW);
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}
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void setup() {
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Serial.begin(115200);
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WiFi.softAP(ssid, password);
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WiFi.onEvent(onClientConnected, ARDUINO_EVENT_WIFI_AP_STACONNECTED);
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WiFi.onEvent(onClientDisconnected, ARDUINO_EVENT_WIFI_AP_STADISCONNECTED);
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delay(1000); // Donne un peu de temps pour démarrer le WiFi
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server.on("/", handleRoot);
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server.begin();
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pinMode(2, OUTPUT);
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}
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void loop() {
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server.handleClient();
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}
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@@ -0,0 +1,11 @@
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void setup() {
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Serial.begin(115200);
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pinMode(2, OUTPUT); // LED intégrée sur beaucoup d'ESP32
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}
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void loop() {
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digitalWrite(2, HIGH);
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delay(500);
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digitalWrite(2, LOW);
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delay(500);
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}
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63
Semaine_2/Projet_esp32/protocole_esp_fpga.md
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63
Semaine_2/Projet_esp32/protocole_esp_fpga.md
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# Protocole between FPGA and ESP32
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Ce protocole permet la communication entre le FPGA et l'ESP32 via UART, principalement pour transférer des données ou des commandes de contrôle simples.
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---
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## Structure générale des trames
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Chaque trame est encadrée par des caractères spéciaux :
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- **STX** (Start of Text) : `0x02`
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- **ETX** (End of Text) : `0x03`
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**Format de trame :**
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---
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## Détail des commandes
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| OP_CODE | Nom | Description | Format |
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|---------|---------------------------|--------------------------------------------------------------|------------------------------------------------------------------------|
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| 0x01 | Wi-Fi State | Indique l'état du Wi-Fi (0 = down, 1 = up) | `0x02 0x01 [0x00/0x01] 0x03` |
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| 0x02 | Connection Update | Notification de connexion ou déconnexion d’un appareil | `0x02 0x02 [0x00/0x01] [MAC_ADDR (6 bytes)] 0x03` |
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| 0x03 | Request Connected Devices | Demande la liste des appareils connectés | `0x02 0x03 0x03` |
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| 0x04 | Send Message | Envoie un message à un appareil connecté via son MAC | `0x02 0x04 [MAC_ADDR (6 bytes)] [LEN (1 byte)] [MESSAGE] 0x03` |
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---
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## Détails des champs
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- **MAC_ADDR** : 6 octets représentant l’adresse MAC du destinataire.
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- **LEN** : Longueur du message à envoyer (1 octet).
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- **MESSAGE** : Suite d’octets de taille `LEN` représentant le message (binaire ou texte selon le contexte).
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---
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## Exemples
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### Exemple 1 : Wi-Fi actif
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```
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0x02 0x01 0x01 0x03
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```
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→ Indique que le Wi-Fi est actif.
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### Exemple 2 : Connexion d'un appareil
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```
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0x02 0x02 0x01 0x12 0x34 0x56 0x78 0x9A 0xBC 0x03
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```
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→ Un appareil avec l’adresse MAC `12:34:56:78:9A:BC` vient de se connecter.
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### Exemple 3 : Envoi de message
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```
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0x02 0x04 0x12 0x34 0x56 0x78 0x9A 0xBC 0x05 0x48 0x65 0x6C 0x6C 0x6F 0x03
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```
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→ Envoi du message `"Hello"` à l’appareil `12:34:56:78:9A:BC`.
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---
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## Remarques
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- Aucune vérification CRC/Checksum n’est ajoutée pour le moment (possible amélioration future).
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- Le protocole est extensible : il suffit d’ajouter de nouveaux OP_CODEs au besoin.
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