Initial commit

testing.py

@@ -0,0 +1,56 @@
+import time
+
+import adafruit_mcp3xxx.mcp3008 as MCP
+import board
+import busio
+import digitalio
+import RPi.GPIO as gp
+
+from adafruit_mcp3xxx.analog_in import AnalogIn
+
+
+def test_relay_on_off(rly=None):
+    # use GPIO numbering
+    gp.setmode(gp.BCM)
+
+    gp.setup(rly, gp.OUT)
+    gp.output(rly, gp.HIGH)
+
+    try:
+        while True:
+            gp.output(rly, gp.LOW)
+            print("Relay 1 ON")
+            time.sleep(1)
+            gp.output(rly, gp.HIGH)
+            print("Relay 1 OFF")
+            time.sleep(1)
+    except KeyboardInterrupt:
+        gp.cleanup()
+
+
+def test_sensor_in_out_water():
+    # create the spi bus
+    spi = busio.SPI(clock=board.SCK, MISO=board.MISO, MOSI=board.MOSI)
+
+    # create the chip select
+    cs = digitalio.DigitalInOut(board.D5)
+
+    # create the mcp object
+    mcp = MCP.MCP3008(spi, cs)
+
+    # create an analog input channel on pin 5
+    analog_ic = AnalogIn(mcp, MCP.P5)
+
+    try:
+        while True:
+            print(f"Raw ADC value: {analog_ic.value:.2f}")
+            print(f"ADC Voltage value: {analog_ic.voltage:.3f}")
+            time.sleep(.5)
+    except KeyboardInterrupt:
+        return
+
+
+if __name__ == "__main__":
+    # Relay 1 on GPIO21
+    #test_relay_on_off(21)
+    test_sensor_in_out_water()

water_plants.py

@@ -0,0 +1,68 @@
+import time
+
+import adafruit_mcp3xxx.mcp3008 as MCP
+import board
+import busio
+import digitalio
+import RPi.GPIO as gp
+
+from adafruit_mcp3xxx.analog_in import AnalogIn
+
+def _set_up_capacitive_sensor():
+    # spi bus
+    spi = busio.SPI(clock=board.SCK, MISO=board.MISO, MOSI=board.MOSI)
+    # chip
+    chip = digitalio.DigitalInOut(board.D5)
+    mcp = MCP.MCP3008(spi, chip)
+
+    return mcp
+
+def _get_sensor_reading():
+    mcp = _set_up_capacitive_sensor()
+    analog_input_channel = AnalogIn(mcp, MCP.P5)
+    
+    return analog_input_channel
+
+def _set_up_pump(rly=None):
+    # use GPIO numbering
+    gp.setmode(gp.BCM)
+    gp.setup(rly, gp.OUT)
+
+
+def _pump_on_off(rly=None):
+    _set_up_pump(rly)
+    try:
+        # on
+        gp.output(rly, gp.LOW)
+        time.sleep(1)
+        # off
+        gp.output(rly, gp.HIGH)
+        time.sleep(1)
+    except KeyboardInterrupt:
+        gp.cleanup()
+    # else:
+        # gp.cleanup()
+
+
+def read_moisture_level(verbose=False):
+    sensor = _get_sensor_reading()
+    if verbose:
+        print(f"Voltage is {sensor.voltage:.3f} V")
+    return sensor.voltage
+
+def water_plants():
+    moisture = read_moisture_level()
+
+    try:
+        while True:
+            if moisture > 1.2:
+                _pump_on_off(rly=21)
+                moisture = read_moisture_level()
+            else:
+                time.sleep(1)
+                moisture = read_moisture_level()
+    except KeyboardInterrupt:
+        exit
+
+if __name__ == "__main__":
+    water_plants()