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ESP32_XY6020L_TEST/ESP32_XY6020L_TEST.ino

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+/**
+ * @file dcdcmbus.ino
+ * @brief usage of XY6020L DCDC for simple max power point tracking of 
+ *  a solar module driving a electrolytic cell
+ *  Cells voltage start from ~3 V and current will rise up to ~3A at 4 V.
+ *  At ~19 V the 20V pannel has its maximum power.
+ *  Simple I-controler increases the cell voltage till the power consumption
+ *  from the solar panel drives its voltage below 19 V.
+    Hardware:  Arduino Pro Micro Clone from China
+ * 
+ * @author Jens Gleissberg
+ * @date 2024
+ * @license GNU Lesser General Public License v3.0 or later
+ */
+
+#include "xy6020l.h"
+  #define PIN_SOFTWARE_SERIAL_RX2  25
+  #define PIN_SOFTWARE_SERIAL_TX2  26
+// dcdc's MBus is connected to Serial2 of Arduino
+xy6020l xy(Serial2, 0x01, 50, XY6020_OPT_SKIP_SAME_HREG_VALUE | XY6020_OPT_NO_HREG_UPDATE);
+
+long ts;
+byte MemIdx;
+  tMemory Mem;
+
+void setup() {
+  // debug messages via USB
+  Serial.begin( 115200);
+  // MBus serial
+//  Serial2.begin( 115200);
+  Serial2.begin(115200, SERIAL_8N1, PIN_SOFTWARE_SERIAL_RX2, PIN_SOFTWARE_SERIAL_TX2); // Rx = 4, Tx = 5 will work for ESP32, S2, S3 and C3
+
+
+
+  ts = millis();
+  MemIdx = 0;
+
+//18:51:25.551 -> V-SET = 1200 (Voltage setting)
+//18:51:25.551 -> I-SET = 500 (Current setting)
+//18:51:25.551 -> S-LVP = 1000 (Low voltage protection value)
+//18:51:25.551 -> S-OVP = 1300 (Overvoltage protection value)
+//18:51:25.551 -> S-OCP = 620 (Overcurrent protection value)
+//18:51:25.551 -> S-OPP = 1040 (Over power protection value)
+//18:51:25.551 -> S-OHP_H = 0 (Maximum output time - hours)
+//18:51:25.551 -> S-OHP_M = 0 (Maximum output time - minutes)
+//18:51:25.551 -> S-OAH = 0 (Maximum output charge Ah)
+//18:51:25.551 -> S-OWH = 0 (Maximum output energy Wh)
+//18:51:25.551 -> S-OTP = 110 (Over temperature protection)
+//18:51:25.551 -> S-INI = 0 (Power-on output switch)
+    Mem.Nr = MemIdx;
+    Mem.VSet = 1200;
+    Mem.ISet =  500;
+    Mem.sLVP = 1000;
+    Mem.sOVP = 1300;
+    Mem.sOCP =  620;
+    Mem.sOPP = 1040;
+    Mem.sOHPh= 0;
+    Mem.sOHPm= 0;
+    Mem.sOAH = 0;
+    Mem.sOWH = 0;
+    Mem.sOTP = 110;
+    Mem.sINI = 1;
+    xy.SetMemory(Mem);
+    xy.PrintMemory(Mem);
+
+//  xy.setOutput(false);  
+//  xy.setCV(0);
+//  xy.setCC(0);
+  xy.ReadAllHRegs();
+  while(!xy.HRegUpdated())
+    xy.task();
+}
+
+int cc=1;
+int v = 100;
+void loop() {
+  int vDiff;
+  char tmpBuf[30];  // text buffer for serial messages
+  word tmpW1, tmpW2;
+  
+  xy.task();
+  
+  // 100 ms  control period
+  if (millis() > ts + 10000) 
+  {
+          xy.setCC(100);
+      ///v+=100;
+      xy.setCV(1100);
+      xy.setOutput(true);  
+      Mem.sINI = 1;
+xy.SetMemory(Mem);
+    Serial.print("Vin = "); Serial.println(xy.getInV()); 
+
+    Serial.print("V = "); Serial.print(xy.getCV()); Serial.print(" isV = "); Serial.println(xy.isCV());
+    
+    Serial.print("C = "); Serial.print(xy.getCC());Serial.print(" isC = "); Serial.println(xy.isCC());
+
+    Serial.print("ActV = "); Serial.println(xy.getActV());
+
+    Serial.print("ActC = "); Serial.println(xy.getActC());
+    Serial.print("ActP = "); Serial.println(xy.getActP());
+
+    ts = millis();
+//    Mem.Nr=MemIdx;
+//    if( xy.GetMemory(&Mem) )
+//    {
+//      xy.PrintMemory(Mem);
+//    }
+  }
+}