Feature Request: Configurable WiFi Connection Delay

[barcaroandrea]

Hi,
do you think it's possible adding ability to configure a delay before attempting WiFi connection (es. 0-300s)?
Useful for:

Description:
Add the ability to configure a delay before attempting WiFi connection in Station mode.

Use Case:
Waiting for router to be ready after power cycle (for example router powered by the same power source of the XBee).

Proposed Implementation:

• Add a configurable parameter in the WiFi Station settings (web interface)
• Store the delay value (0-300 seconds) in NVS
• Implement the delay before calling wifi_connect()
• Display countdown in serial monitor (optional)

Benefits:

• Increases reliability in unstable power scenarios
• Provides more control over connection timing
• Maintains backward compatibility (default: 0 seconds = immediate connection)

The code Claude is suggesting to modify (not tested)

main/include/config.h - Add the new configuration:

// Add to the config_t structure
typedef struct {
    // ... other existing configurations
    uint16_t wifi_connect_delay;  // Delay in seconds before WiFi connection
} config_wifi_sta_t;

main/config.c - Handle save/load configuration:

// In the WiFi configuration load/save function
config->wifi_sta.wifi_connect_delay = nvs_get_u16(handle, "wifi_delay", 0);
nvs_set_u16(handle, "wifi_delay", config->wifi_sta.wifi_connect_delay);

main/wifi.c - Implement the delay:

void wifi_connect() {
    if (config.wifi_sta.wifi_connect_delay > 0) {
        ESP_LOGI(TAG, "Waiting %d seconds before WiFi connection...", 
                 config.wifi_sta.wifi_connect_delay);
        
        // Optional: Display countdown
        for (int i = config.wifi_sta.wifi_connect_delay; i > 0; i--) {
            ESP_LOGI(TAG, "Connecting in %d seconds...", i);
            vTaskDelay(1000 / portTICK_PERIOD_MS);
        }
    }
    
    // Existing connection code continues here
}

www/index.html - Add the field in the web interface:

<!-- In the WiFi Station section -->
<div class="form-group">
    <label for="wifi_delay">Connection Delay (seconds)</label>
    <input type="number" id="wifi_delay" name="wifi_delay" 
           min="0" max="300" value="0">
    <small>Wait before connecting to WiFi (0-300 seconds)</small>
</div>

main/http_server.c - Handle the POST parameter:

// In the POST handler for WiFi configuration save
if (httpd_req_get_url_query_str(req, buf, buf_len) == ESP_OK) {
    char delay_str[4];
    if (httpd_query_key_value(buf, "wifi_delay", delay_str, sizeof(delay_str)) == ESP_OK) {
        int delay = atoi(delay_str);
        // Validate input (0-300 seconds)
        if (delay < 0) delay = 0;
        if (delay > 300) delay = 300;
        config.wifi_sta.wifi_connect_delay = delay;
    }
}

I'm new in Github, thank you for this project and attention, have a nice day.
Andrea