commit 214784c27be8cfe03e0a42f0e85a41842a10d0cb
Author: Denis Denisov <ftc.denis@gmail.com>
Date:   Sun Feb 25 13:04:32 2024 +0300

    Initial charger version

diff --git a/charger.rrb b/charger.rrb
new file mode 100644
index 0000000..0fbb9d5
Binary files /dev/null and b/charger.rrb differ
diff --git a/charger/charger.ino b/charger/charger.ino
new file mode 100644
index 0000000..25e8ce5
--- /dev/null
+++ b/charger/charger.ino
@@ -0,0 +1,111 @@
+#include <ModbusRTU.h>
+
+ModbusRTU mb;
+
+#define MODBUS_ADDRESS 1
+
+#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 ACC_PIN 2
+#define LAMP_PIN 3
+
+// Мощность лампочки (Вт)
+const float LAMP_POWER = 21.0; 
+const float LAMP_REFERENCE_CURRENT = 12.0;
+
+// Сопротивление токоограничивающего резистора
+const float R_LIMITER = 4.7;
+
+float R_lamp;
+
+void setup() 
+{
+  Serial.begin(115200);
+  pinMode(A4, INPUT);
+  pinMode(A5, INPUT);
+  pinMode(A2, INPUT);
+  pinMode(A3, INPUT);
+  pinMode(ACC_PIN, OUTPUT);
+  pinMode(LAMP_PIN, OUTPUT);
+  R_lamp = LAMP_REFERENCE_CURRENT / (LAMP_POWER / LAMP_REFERENCE_CURRENT);
+  mb.begin(&Serial);
+  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);
+}
+
+float I_lamp;
+float I_acc;
+
+void ReadLamp()
+{
+  int a4 = analogRead(A4);
+  int a5 = analogRead(A5);
+  // multiply by 5 as reference current, 
+  // multiply by 3 because of the divider
+  float v1 = a4 / 1023.0 * 5 * 3;
+  float v2 = a5 / 1023.0 * 5 * 3;
+  I_lamp = (v1 - v2) / R_lamp;
+}
+
+void ReadAcc()
+{
+  int a2 = analogRead(A2);
+  int a3 = analogRead(A3);
+  // multiply by 5 as reference current, 
+  // multiply by 3 because of the divider
+  float v1 = a2 / 1023.0 * 5 * 3;
+  float v2 = a3 / 1023.0 * 5 * 3;
+  I_acc = (v1 - v2) / R_LIMITER;
+}
+
+void WriteFloatReg(int start, float val)
+{
+  uint16_t* d = (uint16_t*)(&val);
+  mb.Hreg(start, *d);
+  mb.Hreg(start + 1, *(d + 1));
+}
+
+uint16_t acc_state = 0;
+uint16_t lamp_state = 0;
+
+void loop() 
+{
+  ReadLamp();
+  ReadAcc();
+  WriteFloatReg(I_ACC_LOW_REGISTER, I_acc);
+  WriteFloatReg(I_LAMP_LOW_REGISTER, I_lamp);
+  Serial.print("I_acc = ");
+  Serial.print(I_acc);
+  Serial.print(" I_lamp = ");
+  Serial.print(I_lamp);
+  Serial.println();
+  mb.task();
+  lamp_state = mb.Hreg(lamp_state);
+  acc_state = mb.Hreg(acc_state);
+  if (lamp_state)
+  {
+    digitalWrite(LAMP_PIN, 1);
+  }
+  else 
+  {
+    digitalWrite(LAMP_PIN, 0);
+  }
+  if (acc_state)
+  {
+    digitalWrite(ACC_PIN, 1);
+  }
+  else
+  {
+    digitalWrite(ACC_PIN, 0);
+  }
+}
diff --git a/charger_new.rrb b/charger_new.rrb
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Binary files /dev/null and b/charger_new.rrb differ