150 lines
3.5 KiB
C++
150 lines
3.5 KiB
C++
/**
|
|
* @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;
|
|
int task;
|
|
byte MemIdx;
|
|
|
|
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();
|
|
task=0;
|
|
MemIdx = 0;
|
|
}
|
|
|
|
void loop() {
|
|
int vDiff;
|
|
char tmpBuf[30]; // text buffer for serial messages
|
|
word tmpW1, tmpW2;
|
|
tMemory Mem;
|
|
|
|
xy.task();
|
|
|
|
// 100 ms control period
|
|
if (millis() > ts + 500)
|
|
{
|
|
ts = millis();
|
|
|
|
sprintf( tmpBuf, "\nTask: %d ", task );
|
|
Serial.print(tmpBuf);
|
|
|
|
switch( task)
|
|
{
|
|
case 4:
|
|
xy.ReadAllHRegs();
|
|
while(!xy.HRegUpdated())
|
|
xy.task();
|
|
sprintf( tmpBuf, "\nM:%04X V:%04X\n", xy.getModel(), xy.getVersion() );
|
|
Serial.print(tmpBuf);
|
|
task++;
|
|
break;
|
|
case 6:
|
|
if(!xy.setTempAsCelsius())
|
|
Serial.print("\nset temp to °C failed\n");
|
|
else
|
|
Serial.print("\nset temp to °C requested\n");
|
|
task++;
|
|
break;
|
|
/*case 9:
|
|
if(!xy.setSlaveAdd(1) )
|
|
Serial.print("\nset setSlaveAdd failed\n");
|
|
else
|
|
Serial.print("\nset setSlaveAdd requested\n");
|
|
task++;
|
|
break;*/
|
|
case 8:
|
|
// LiPo charger
|
|
Mem.Nr = 0;
|
|
Mem.VSet = 410;
|
|
Mem.ISet = 50;
|
|
Mem.sLVP = 1000;
|
|
Mem.sOVP = 500;
|
|
Mem.sOCP = 100;
|
|
Mem.sOPP = 40;
|
|
Mem.sOHPh= 0;
|
|
Mem.sOHPm= 0;
|
|
Mem.sOAH = 0;
|
|
Mem.sOWH = 0;
|
|
Mem.sOTP = 110;
|
|
Mem.sINI = 0;
|
|
xy.SetMemory(Mem);
|
|
xy.PrintMemory(Mem);
|
|
task++;
|
|
break;
|
|
case 9:
|
|
// electrolytical cell
|
|
Mem.Nr = 1;
|
|
Mem.VSet = 300;
|
|
Mem.ISet = 500;
|
|
Mem.sLVP = 1000;
|
|
Mem.sOVP = 920;
|
|
Mem.sOCP = 420;
|
|
Mem.sOPP = 40;
|
|
Mem.sOHPh= 0;
|
|
Mem.sOHPm= 0;
|
|
Mem.sOAH = 0;
|
|
Mem.sOWH = 0;
|
|
Mem.sOTP = 110;
|
|
Mem.sINI = 0;
|
|
xy.SetMemory(Mem);
|
|
xy.PrintMemory(Mem);
|
|
task++;
|
|
break;
|
|
case 10:
|
|
// 12 V supply
|
|
Mem.Nr = 2;
|
|
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 = 0;
|
|
xy.SetMemory(Mem);
|
|
xy.PrintMemory(Mem);
|
|
task++;
|
|
break;
|
|
case 11:
|
|
Mem.Nr=MemIdx;
|
|
if( xy.GetMemory(&Mem) )
|
|
{
|
|
xy.PrintMemory(Mem);
|
|
MemIdx++;
|
|
if(MemIdx > 6)
|
|
task++;
|
|
}
|
|
break;
|
|
default:
|
|
task++;
|
|
}
|
|
}
|
|
}
|