Актуальная и более качественная схема

charger/charger.ino

@@ -6,8 +6,6 @@ ModbusRTU mb;
 
 #define I_ACC_LOW_REGISTER 0
 #define I_ACC_HIGH_REGISTER 1
-#define I_LAMP_LOW_REGISTER 2
-#define I_LAMP_HIGH_REGISTER 3
 #define ACC_STATE_REGISTER 4
 #define LAMP_STATE_REGISTER 5
 #define U_ACC_LOW_REGISTER 6
@@ -28,6 +26,7 @@ float R_lamp;
 void setup() 
 {
   Serial.begin(115200);
+  pinMode(A7, INPUT);
   pinMode(A4, INPUT);
   pinMode(A5, INPUT);
   pinMode(A2, INPUT);
@@ -39,8 +38,6 @@ void setup()
   mb.slave(MODBUS_ADDRESS);
   mb.addHreg(I_ACC_LOW_REGISTER);
   mb.addHreg(I_ACC_HIGH_REGISTER);
-  mb.addHreg(I_LAMP_LOW_REGISTER);
-  mb.addHreg(I_LAMP_HIGH_REGISTER);
   mb.addHreg(ACC_STATE_REGISTER);
   mb.addHreg(LAMP_STATE_REGISTER);
   for (int i = 0; i < 4; i++)
@@ -50,12 +47,11 @@ void setup()
   }
 }
 
-float I_lamp;
 float I_acc;
-float U1_lamp;
-float U2_lamp;
-float U1_acc;
-float U2_acc;
+float U4;
+float U5;
+float U2;
+float U3;
 
 void ReadLamp()
 {
@@ -63,9 +59,8 @@ void ReadLamp()
   int a5 = analogRead(A5);
   // multiply by 5 as reference current, 
   // multiply by 3 because of the divider
-  U1_lamp = a4 / 1023.0 * 5 * 3;
-  U2_lamp = a5 / 1023.0 * 5 * 3;
-  I_lamp = (U1_lamp - U2_lamp) / R_lamp;
+  U4 = a4 / 1023.0 * 5 * 3;
+  U5 = a5 / 1023.0 * 5 * 3;
 }
 
 void ReadAcc()
@@ -74,9 +69,32 @@ void ReadAcc()
   int a3 = analogRead(A3);
   // multiply by 5 as reference current, 
   // multiply by 3 because of the divider
-  U1_acc = a2 / 1023.0 * 5 * 3;
-  U2_acc = a3 / 1023.0 * 5 * 3;
-  I_acc = (U1_acc - U2_acc) / R_LIMITER;
+  U2 = a2 / 1023.0 * 5 * 3;
+  U3 = a3 / 1023.0 * 5 * 3;
+}
+
+const float CURRENT_SENSOR_MAX = 30;
+
+void ReadI()
+{
+  static int reads[10];
+  for (int i = 0; i < 10; i++)
+  {
+    reads[i] = analogRead(A7);
+  }
+  int imin = 0, imax = 0;
+  for (int i = 0; i < 10; i++)
+  {
+    if (reads[i] < reads[imin]) imin = i;
+    if (reads[i] < reads[imax]) imax = i;
+  }
+  int total = 0;
+  for (int i = 0; i < 10; i++)
+  {
+    if (i == imin || i == imax) continue;
+    total += reads[i];
+  }
+  I_acc = ((total / 8.0 + 0.0) / 1023.0 - 0.5) * CURRENT_SENSOR_MAX;
 }
 
 void WriteFloatReg(int start, float val)
@@ -93,12 +111,12 @@ void loop()
 {
   ReadLamp();
   ReadAcc();
+  ReadI();
   WriteFloatReg(I_ACC_LOW_REGISTER, I_acc);
-  WriteFloatReg(U_ACC_LOW_REGISTER, U1_acc);
-  WriteFloatReg(U_ACC_LOW_REGISTER + 2, U2_acc);
-  WriteFloatReg(I_LAMP_LOW_REGISTER, I_lamp);
-  WriteFloatReg(U_LAMP_LOW_REGISTER, U1_lamp);
-  WriteFloatReg(U_LAMP_LOW_REGISTER + 2, U2_lamp);
+  WriteFloatReg(U_ACC_LOW_REGISTER, U2);
+  WriteFloatReg(U_ACC_LOW_REGISTER + 2, U3);
+  WriteFloatReg(U_LAMP_LOW_REGISTER, U4);
+  WriteFloatReg(U_LAMP_LOW_REGISTER + 2, U5);
   mb.task();
   lamp_state = mb.Hreg(LAMP_STATE_REGISTER);
   acc_state = mb.Hreg(ACC_STATE_REGISTER);