wifi working tested on hardware

wifi_manager.cpp

@@ -0,0 +1,125 @@
+#include "wifi_manager.h"
+#include "pico/cyw43_arch.h"
+#include "hardware/flash.h"
+#include "hardware/sync.h"
+#include <stdio.h>
+#include <string.h>
+
+// Use the last sector of the 2MB flash
+#define FLASH_TARGET_OFFSET (2 * 1024 * 1024 - FLASH_SECTOR_SIZE)
+#define WIFI_CREDS_MAGIC 0x42574946 // 'BWIF'
+
+struct WifiCreds {
+    uint32_t magic;
+    char ssid[33];
+    char password[64];
+};
+
+static volatile bool g_wifi_initialized = false;
+static bool g_wifi_connected = false;
+
+bool wifi_init() {
+    if (g_wifi_initialized) return true;
+
+    if (cyw43_arch_init()) {
+        printf("WiFi init failed!\n");
+        return false;
+    }
+
+    cyw43_arch_enable_sta_mode();
+    g_wifi_initialized = true;
+    printf("WiFi initialized on Core %u\n", get_core_num());
+    return true;
+}
+
+static int scan_result(void *env, const cyw43_ev_scan_result_t *result) {
+    if (result) {
+        printf("SSID: %-32s RSSI: %4d Auth: %u\n", result->ssid, result->rssi, result->auth_mode);
+    }
+    return 0;
+}
+
+void wifi_scan() {
+    // Wait for initialization
+    int timeout = 500; // 5 seconds
+    while (!g_wifi_initialized && timeout > 0) {
+        sleep_ms(10);
+        timeout--;
+    }
+
+    if (!g_wifi_initialized) {
+        printf("WiFi not initialized!\n");
+        return;
+    }
+    
+    printf("Starting WiFi scan...\n");
+    cyw43_wifi_scan_options_t scan_options = {0};
+    int err = cyw43_wifi_scan(&cyw43_state, &scan_options, NULL, scan_result);
+    if (err != 0) {
+        printf("Failed to start scan: %d\n", err);
+    }
+}
+
+void wifi_save_credentials(const char* ssid, const char* password) {
+    WifiCreds creds;
+    creds.magic = WIFI_CREDS_MAGIC;
+    strncpy(creds.ssid, ssid, sizeof(creds.ssid) - 1);
+    creds.ssid[sizeof(creds.ssid) - 1] = '\0';
+    strncpy(creds.password, password, sizeof(creds.password) - 1);
+    creds.password[sizeof(creds.password) - 1] = '\0';
+
+    uint32_t ints = save_and_disable_interrupts();
+    flash_range_erase(FLASH_TARGET_OFFSET, FLASH_SECTOR_SIZE);
+    flash_range_program(FLASH_TARGET_OFFSET, (const uint8_t*)&creds, sizeof(creds));
+    restore_interrupts(ints);
+    
+    printf("WiFi credentials saved to flash.\n");
+}
+
+bool wifi_try_auto_connect() {
+    const WifiCreds* creds = (const WifiCreds*)(XIP_BASE + FLASH_TARGET_OFFSET);
+    
+    if (creds->magic != WIFI_CREDS_MAGIC) {
+        printf("No saved WiFi credentials found.\n");
+        return false;
+    }
+    
+    printf("Found saved credentials for SSID: %s\n", creds->ssid);
+    return wifi_connect(creds->ssid, creds->password);
+}
+
+bool wifi_connect(const char* ssid, const char* password) {
+    // Wait for initialization
+    int timeout = 500; // 5 seconds
+    while (!g_wifi_initialized && timeout > 0) {
+        sleep_ms(10);
+        timeout--;
+    }
+
+    if (!g_wifi_initialized) {
+        printf("WiFi not initialized!\n");
+        return false;
+    }
+
+    printf("Connecting to WiFi: %s...\n", ssid);
+    
+    // Connect in blocking mode for simplicity
+    if (cyw43_arch_wifi_connect_timeout_ms(ssid, password, CYW43_AUTH_WPA2_AES_PSK, 30000)) {
+        printf("WiFi connection failed!\n");
+        g_wifi_connected = false;
+        return false;
+    }
+
+    printf("WiFi connected!\n");
+    g_wifi_connected = true;
+    return true;
+}
+
+bool wifi_is_connected() {
+    return g_wifi_connected;
+}
+
+const char* wifi_get_ip() {
+    if (!g_wifi_connected) return "Disconnected";
+    return ip4addr_ntoa(netif_ip4_addr(&cyw43_state.netif[0]));
+}