#define TFT_CS 15
#define TFT_DC 2
#define TFT_MOSI 23
#define TFT_SCLK 18

#include <SPI.h>
#include <TFT_eSPI.h>       // Hardware-specific library

TFT_eSPI    tft = TFT_eSPI(128,160);

int xpos = 0;
int ypos = 0;

float v = 0;
float c1 = 0;
float c2 = 0;
float c3 = 0;

char buffer[9];
char old_buffer[9];

void setup(void) {
  
  Serial.begin(250000);

  tft.begin();
  tft.setRotation(1);
  tft.fillScreen(TFT_BLACK);
  
  //tft.drawRect(0,0,160,128,TFT_YELLOW);
  //tft.drawLine(0,31,160,31,TFT_YELLOW);

  tft.fillRoundRect(0,0,160,31,8,TFT_NAVY);
  tft.setTextColor(TFT_YELLOW,TFT_NAVY);
  tft.setTextDatum(TR_DATUM);
  tft.drawString("V",93,11,2); // val curenta
  tft.drawString("Ah",150,12,1);
  tft.drawString("W",150,22,1);

  tft.drawString("12.793",81,5,4); // valoare curenta
  tft.drawString("01:20:45",150,2,1);
  tft.drawString("10.852",137,12,1);
  tft.drawString("0.629",137,22,1);


  tft.fillRoundRect(0,32,160,31,8,TFT_RED);
  tft.setTextColor(TFT_GREEN,TFT_RED);
  tft.setTextDatum(TR_DATUM);  
  tft.drawString("A",93,43,2);
  tft.drawString("Ah",150,44,1);
  tft.drawString("W",150,54,1);
 
  tft.drawString("0.793",80,37,4); // val curenta
  tft.drawString("01:20:45",150,34,1);
  tft.drawString("10.852",137,44,1);
  tft.drawString("0.629",137,54,1);

  tft.fillRoundRect(0,64,160,31,8,TFT_GREEN);
  tft.setTextColor(TFT_BLUE);
  tft.setTextDatum(TR_DATUM);

  tft.drawString("A",93,75,2);
  tft.drawString("Ah",150,76,1);
  tft.drawString("W",150,86,1);

  tft.drawString("2.793",80,69,4); //val curenta Ch 2
  tft.drawString("01:20:45",150,66,1);
  tft.drawString("10.852",137,76,1);
  tft.drawString("0.629",137,86,1);

  tft.fillRoundRect(0,96,160,31,8,TFT_YELLOW);
  tft.setTextColor(TFT_RED);
  tft.setTextDatum(TR_DATUM);

  tft.drawString("A",93,107,2);
  tft.drawString("Ah",150,108,1);
  tft.drawString("W",150,118,1);

  tft.drawString("15.880",80,101,4);
  tft.drawString("01:20:45",150,98,1);
  tft.drawString("10.852",137,108,1);
  tft.drawString("0.629",137,118,1);

}

void loop() {
  char buff[7];
  
  
  //print_INA3221();
  tft.setTextColor(TFT_YELLOW,TFT_NAVY);
  tft.setTextDatum(TR_DATUM);
  tft.drawString("02.384",80,5,4);
  
  tft.setTextColor(TFT_GREEN,TFT_RED);
  tft.setTextDatum(TR_DATUM);  
  tft.drawString("01:22:48",150,34,1);   
  //tft.drawString("10.246",137,44,1);
  dtostrf(10.246, 6, 3, buff);
  tft.drawString(buff,137,44,1);

  delay(2000);
  tft.setTextColor(TFT_YELLOW,TFT_NAVY);
  tft.setTextDatum(TR_DATUM);
  tft.drawString("05.934",80,5,4); 
 
  tft.setTextColor(TFT_GREEN,TFT_RED);
  tft.setTextDatum(TR_DATUM);  
  tft.drawString("01:23:18",150,34,1);   
  dtostrf(12.553, 6, 3, buff);
  tft.drawString(buff,137,44,1);

  delay(2000);
  tft.setTextColor(TFT_YELLOW,TFT_NAVY);
  tft.setTextDatum(TR_DATUM);
  tft.drawString("02.172",80,5,4); 

  tft.setTextColor(TFT_GREEN,TFT_RED);
  tft.setTextDatum(TR_DATUM);  
  tft.drawString("01:24:25",150,34,1);   
  dtostrf(7.246, 6, 3, buff);
  tft.drawString(buff,137,44,1);  

  delay(2000);
  tft.setTextColor(TFT_YELLOW,TFT_NAVY);
  tft.setTextDatum(TR_DATUM);
  tft.drawString("10.730",80,5,4); 

  tft.setTextColor(TFT_GREEN,TFT_RED);
  tft.setTextDatum(TR_DATUM);  
  tft.drawString("01:25:12",150,34,1);   
  delay(2000);
  tft.setTextColor(TFT_YELLOW,TFT_NAVY);
  tft.setTextDatum(TR_DATUM);
  tft.drawString("05.384",80,5,4); 

  tft.setTextColor(TFT_GREEN,TFT_RED);
  tft.setTextDatum(TR_DATUM);  
  tft.drawString("01:26:10",150,34,1);   
  delay(2000);
}

void print_INA3221(){
  int random_int = random(1000,12630);
  float random_float = random_int / 1289;
  String v1s = String (random_float,3);
  //v1s = v1s + " V";
  
  buffer[7];
  //v1s.toCharArray(buffer,10);
  
//  tft.fillRect(20,1,85,22,TFT_NAVY);

  dtostrf(random_float, 6, 3, buffer);
  xpos = 0;
  ypos = 0;
//  tft.setTextColor(TFT_YELLOW);
//  tft.setTextDatum(TR_DATUM);
//  tft.drawString(buffer,xpos+90,ypos+1,4);

}