/**
 * @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);
//    }
  }
}