Added ACAnalogSensor for current detection

Author: ganonp

ACAnalogSensor.py

@@ -0,0 +1,49 @@
+from machine import ADC
+import ujson
+import utime
+
+
+class ACAnalogSensor:
+
+    def __init__(self, data):
+        self.index = str(data["index"])
+        self.serial_no = data["serial_no"]
+        self.gpio = int(data["gpio"])
+        self.type = data["type"]
+        self.window = 10
+        self.current_size = 0.0
+        self.values = []
+        self.adc = ADC(self.gpio)
+        self.response_dict = {"serial_no": str(self.serial_no), "index": str(self.index), "type": self.type}
+        bin = ujson.dumps(self.response_dict) + "\n"
+        self.response_dict_binary = bytes(bin.encode('ascii'))
+
+    def add_value(self):
+
+        if self.current_size >= self.window:
+            self.values.pop(0)
+
+        x = 0
+        for i in range(2000):
+            temp = self.adc.read_u16()
+            if temp > x:
+                x = temp
+            utime.sleep_us(10)
+
+        self.values.append(x)
+
+        if self.current_size < self.window:
+            self.current_size = self.current_size + 1.0
+
+    def get_average_value(self):
+        x = 0.0
+        for element in self.values:
+            x = x + element
+        return x / self.current_size
+
+    def update_response_dict(self):
+        self.response_dict["values"] = str(self.values)
+        self.response_dict["averaged"] = str(self.get_average_value())
+        bin = ujson.dumps(self.response_dict) + "\n"
+        self.response_dict_binary = bytes(bin.encode('ascii'))
+        return self.response_dict

main.py

@@ -1,5 +1,6 @@
 from machine import ADC, Pin
 from AnalogSensor import AnalogSensor
+from ACAnalogSensor import ACAnalogSensor
 from Pump import Pump
 import ujson
 import sys
@@ -37,6 +38,9 @@ def init():
             if v['type'] == 'sensor':
                 analog_sensor = AnalogSensor(v)
                 io_components[str(analog_sensor.index)] = analog_sensor
+            elif v['type'] == 'acsensor':
+                analog_sensor = ACAnalogSensor(v)
+                io_components[str(analog_sensor.index)] = analog_sensor
             elif v['type'] == 'pump':
                 pump = Pump(v)
                 io_components[str(pump.index)] = pump
@@ -83,7 +87,7 @@ def loop():
             print(e)
         finally:
             for sensor in io_components.values():
-                if sensor.type == 'sensor':
+                if sensor.type == 'sensor' or sensor.type == 'acsensor':
                     sensor.add_value()
                     sensor.update_response_dict()
             led.toggle()