# 🌱 ESP32 Greenhouse Controller - Command Reference

## ⚡ System Commands
| **Command**            | **Description** |
|------------------------|----------------|
| `REBOOT` / `RESTART`  | Reboots the ESP32 immediately. |
| `SET_DEFAULT`         | Restores all configuration to default and reboots the ESP32. |

## 📡 WiFi Commands
| **Command**                     | **Description** |
|----------------------------------|----------------|
| `SET_WIFI <SSID>,<PASSWORD>`    | Updates WiFi credentials & saves them to EEPROM. |
| `SCAN_WIFI`                     | Scans for available WiFi networks (human-readable). |
| `SCAN_WIFI JSON`                | Scans for WiFi networks and returns results in JSON format. |

## 📡 MQTT Commands
| **Command**                         | **Description** |
|--------------------------------------|----------------|
| `SET_MQTT_HOST <host>`               | Updates MQTT broker hostname or IP. |
| `SET_MQTT_PORT <port>`               | Updates MQTT broker port. |
| `SET_MQTT_USER <username>`           | Updates MQTT username. |
| `SET_MQTT_PASS <password>`           | Updates MQTT password. |
| `SET_MQTT_TOPIC_ROOT <root>`         | Updates MQTT topic root. |
| `SET_MQTT_CONN <host>,<port>,<user>,<pass>,<root>` | Sets all MQTT settings in one command. |

## ⚙️ Global Configuration Commands
| **Command**                  | **Description** |
|--------------------------------|----------------|
| `SET <parameter> <value>`      | Updates a global configuration parameter. |
| **Supported Parameters**       | `publishInterval`, `wifiReconnectInterval`, `mqttReconnectInterval`, `mixerLevelSetpoint`, `feederLevelSetpoint`, `mixerFullLevel`, `mixerRefillLevel`, `phSettlingTime`, `phTargetMax`, `phPumpDuration`, `mixingPumpDuration`, `autoMode`, `bypassFillInterlock` |

## 🌱 Per-Plant Configuration Commands
| **Command**                                   | **Description** |
|-----------------------------------------------|----------------|
| `SET PLANT<index> MODE <value>`              | Sets the active watering mode for a plant (index starts at 1). |
| `SET PLANT<index> SETPOINTS <mode> <LOW|HIGH> <value>` | Updates moisture setpoints for a plant's growth stage. |

## 🔹 Example Usages:
```
SET_WIFI MyHomeWiFi,SecurePassword123
```
**Output:**
```
WiFi credentials updated: SSID=MyHomeWiFi
```

```
SCAN_WIFI JSON
```
**Output:**
```json
{
  "networks": [
    { "ssid": "HomeWiFi", "signal": -67, "security": "Protected" },
    { "ssid": "GuestWiFi", "signal": -72, "security": "Protected" }
  ]
}
```