Merge pull request #139 from SE4CPS/embedded-code

Python Scripts for Raspberry PI

embedded/README.md

@@ -0,0 +1,238 @@
+# Setting Up PlantWaterSystem on a New Raspberry Pi
+
+This guide will walk you through setting up a new Raspberry Pi for your Soil Moisture Monitoring System using:
+- Raspberry Pi
+- Capacitive Soil Moisture Sensor
+- ADS1115 Analog-to-Digital Converter (ADC)
+- SQLite Database
+- Python (for data processing and logging)
+
+---
+
+## **1. Hardware Requirements**
+### **Components Needed**
+1. Raspberry Pi (any model with GPIO support)
+2. Capacitive Soil Moisture Sensor
+3. ADS1115 ADC Module
+4. Jumper Wires
+5. Power Supply for Raspberry Pi
+
+---
+
+## **2. Wiring Connections**
+
+### **ADS1115 (ADC) to Raspberry Pi**
+| ADS1115 Pin | Raspberry Pi GPIO Pin |
+|-------------|------------------------|
+| VDD         | 3.3V (Pin 1)           |
+| GND         | GND (Pin 9)            |
+| SCL         | GPIO3 (SCL, Pin 5)      |
+| SDA         | GPIO2 (SDA, Pin 3)      |
+| ADDR        | GPIO7 (Pin 7)           |
+| ALRT        | GPIO0 (Pin 11)          |
+
+### **Capacitive Soil Moisture Sensor to ADS1115**
+| Sensor Pin | ADS1115 Pin |
+|------------|-------------|
+| VCC        | 5V (Pin 2)  |
+| GND        | GND (Pin 14)|
+| Sensor 1 AO| A0          |
+| Sensor 2 AO| A1          |
+| Sensor 3 AO| A2          |
+| Sensor 4 AO| A3          |
+
+### **Capacitive Soil Moisture Sensor Digital Output to Raspberry Pi**
+| Sensor DO Pin | Raspberry Pi GPIO      |
+|---------------|-------------------------|
+| Sensor 1 AO   | GPIO8 (Pin 8)           |
+| Sensor 2 AO   | GPIO15 (Pin 10)         |
+| Sensor 3 AO   | GPIO18 (Pin 12)         |
+| Sensor 4 AO   | GPIO23 (Pin 16)         |
+
+---
+
+## **3. Setup Options**
+
+### **Automated Setup**
+Run the following command to clone the repository, install dependencies, and configure the system automatically:
+
+```bash
+bash <(curl -L https://raw.githubusercontent.com/SE4CPS/PlantWaterSystem/embedded-code/Embedded/setup.sh)
+```
+
+This command performs the following tasks:
+- Clones the PlantWaterSystem repository.
+- Updates your Raspberry Pi OS.
+- Installs required packages and Python libraries.
+- Verifies I2C connection.
+- Configures auto-start for the `plant_monitor.py` script using `systemd`.
+
+Check the service status after setup:
+
+```bash
+sudo systemctl status plant_monitor.service
+```
+
+If you choose to set up the `send_data_api.py` service, check its status with:
+
+```bash
+sudo systemctl status send_data_api.service
+```
+
+---
+
+### **Manual Setup (or for Debugging)**
+
+If you prefer a manual setup or need to debug, follow these steps:
+
+### **Step 1: Clone the Repository**
+```bash
+git clone [email protected]:SE4CPS/PlantWaterSystem.git
+cd PlantWaterSystem/Embedded
+```
+
+### **Step 2: Update Raspberry Pi OS**
+```bash
+sudo apt update && sudo apt upgrade -y
+```
+
+### **Step 3: Enable I2C Communication**
+
+Check if I2C is enabled:
+```bash
+ls /dev/i2c-*
+```
+
+If you don’t see a response, enable I2C:
+```bash
+sudo raspi-config
+```
+Navigate to **Interfacing Options** → **I2C** → Enable.
+
+### **Step 4: Install Required Packages**
+```bash
+sudo apt install -y python3-pip python3-smbus i2c-tools sqlite3
+sudo pip3 install RPi.GPIO adafruit-circuitpython-ads1x15 --break-system-packages
+```
+
+### **Step 5: Verify I2C Devices**
+```bash
+i2cdetect -y 1
+```
+Ensure the address `0x48` appears to confirm the connection.
+
+### **Step 6: Set Permissions and Run the Script**
+```bash
+chmod +x plant_monitor.py
+python3 plant_monitor.py
+```
+
+The output should display something like:
+```
+Starting Plant Sensor Monitoring...
+Raw ADC Value: 18345, Moisture Level: 54.23%, Digital Status: Dry
+```
+
+### **Step 7: Set Up Auto-Start (Optional)**
+
+#### **Option 1: Using systemd (Recommended)**
+
+1. Create a service file for `plant_monitor.py`:
+   ```bash
+   sudo nano /etc/systemd/system/plant_monitor.service
+   ```
+
+2. Paste the following:
+   ```ini
+   [Unit]
+   Description=Plant Moisture Monitoring Service
+   After=multi-user.target
+
+   [Service]
+   ExecStart=/usr/bin/python3 /home/pi/PlantWaterSystem/Embedded/plant_monitor.py
+   WorkingDirectory=/home/pi/PlantWaterSystem/Embedded
+   StandardOutput=inherit
+   StandardError=inherit
+   Restart=always
+   User=pi
+
+   [Install]
+   WantedBy=multi-user.target
+   ```
+
+3. Enable and start the service:
+   ```bash
+   sudo systemctl daemon-reload
+   sudo systemctl enable plant_monitor.service
+   sudo systemctl start plant_monitor.service
+   ```
+
+4. Check the service status:
+   ```bash
+   sudo systemctl status plant_monitor.service
+   ```
+
+#### **Option 2: Set Up Auto-Start for `send_data_api.py`**
+
+If you want to run `send_data_api.py` automatically, follow these steps:
+
+1. Create a service file for `send_data_api.py`:
+   ```bash
+   sudo nano /etc/systemd/system/send_data_api.service
+   ```
+
+2. Paste the following:
+   ```ini
+   [Unit]
+   Description=Send Data API Service
+   After=multi-user.target
+
+   [Service]
+   ExecStart=/usr/bin/python3 /home/pi/PlantWaterSystem/Embedded/send_data_api.py
+   WorkingDirectory=/home/pi/PlantWaterSystem/Embedded
+   StandardOutput=inherit
+   StandardError=inherit
+   Restart=always
+   User=pi
+
+   [Install]
+   WantedBy=multi-user.target
+   ```
+
+3. Enable and start the service:
+   ```bash
+   sudo systemctl daemon-reload
+   sudo systemctl enable send_data_api.service
+   sudo systemctl start send_data_api.service
+   ```
+
+4. Check the service status:
+   ```bash
+   sudo systemctl status send_data_api.service
+   ```
+
+---
+
+## **4. Testing & Debugging**
+
+### **To View Logs:**
+```bash
+journalctl -u plant_monitor.service --follow
+```
+For `send_data_api.py`:
+```bash
+journalctl -u send_data_api.service --follow
+```
+
+### **To Restart the Service:**
+```bash
+sudo systemctl restart plant_monitor.service
+```
+For `send_data_api.py`:
+```bash
+sudo systemctl restart send_data_api.service
+```
+
+### **To Manually View Data:**
+```bash
+sqlite3 plant_sensor_data.db "SELECT * FROM moisture_data;"