// SPDX-FileCopyrightText: 2022 Limor Fried for Adafruit Industries
//
// SPDX-License-Identifier: MIT

#include <Arduino.h>
#include "Adafruit_MAX1704X.h"
#include <SensirionI2cSen66.h>
#include <Wire.h>
#include <Fonts/FreeSans12pt7b.h>

#include <Adafruit_GFX.h>    // Core graphics library
#include <Adafruit_ST7789.h> // Hardware-specific library for ST7789
#include <SPI.h>

Adafruit_ST7789 display = Adafruit_ST7789(TFT_CS, TFT_DC, TFT_RST);
SensirionI2cSen66 sensor;

GFXcanvas16 canvas(240, 135);
Adafruit_MAX17048 lipo;

bool maxfound = false;
bool lcfound = false;

// macro definitions
// make sure that we use the proper definition of NO_ERROR
#ifdef NO_ERROR
#undef NO_ERROR
#endif
#define NO_ERROR 0


static char errorMessage[64];
static int16_t error;

void setup() {
  Serial.begin(115200);
  // while (! Serial) delay(10);
  
  delay(100);
  
  // turn on the TFT / I2C power supply
  pinMode(TFT_I2C_POWER, OUTPUT);
  digitalWrite(TFT_I2C_POWER, HIGH);
  delay(10);
  
  display.init(135, 240);           // Init ST7789 240x135
  display.setRotation(3);
  canvas.setFont(&FreeSans12pt7b);
  canvas.setTextColor(ST77XX_WHITE); 


    if (!lipo.begin()) {
      Serial.println(F("Couldnt find Adafruit MAX1704X?\nMake sure a battery is plugged in!"));
      while (1) delay(10);
    }
    Serial.print(F("Found MAX17048"));
    Serial.print(F(" with Chip ID: 0x")); 
    Serial.println(lipo.getChipID(), HEX);
    maxfound = true;
    
}

uint8_t j = 0;

void loop() {

   float massConcentrationPm1p0 = 0.0;
    float massConcentrationPm2p5 = 0.0;
    float massConcentrationPm4p0 = 0.0;
    float massConcentrationPm10p0 = 0.0;
    float humidity = 0.0;
    float temperature = 0.0;
    float vocIndex = 0.0;
    float noxIndex = 0.0;
    uint16_t co2 = 0;

    error = sensor.readMeasuredValues(
      massConcentrationPm1p0, massConcentrationPm2p5, massConcentrationPm4p0,
      massConcentrationPm10p0, humidity, temperature, vocIndex, noxIndex,
      co2);
    if (error != NO_ERROR) {
        Serial.print("Error trying to execute readMeasuredValues(): ");
        errorToString(error, errorMessage, sizeof errorMessage);
        Serial.println(errorMessage);
        return;
    }

  if (j % 2 == 0) {
    canvas.fillScreen(ST77XX_BLACK);
    canvas.setCursor(0, 17);
    canvas.setTextColor(ST77XX_RED);
    canvas.println("Adafruit Feather");
    canvas.setTextColor(ST77XX_YELLOW);
    canvas.println("ESP32-S3 TFT Demo");
    canvas.setTextColor(ST77XX_GREEN); 
    canvas.print("Battery: ");
    canvas.setTextColor(ST77XX_WHITE);
    canvas.print(lipo.cellVoltage(), 1);
    canvas.print(" V  /  ");
    canvas.print(lipo.cellPercent(), 0);
    canvas.println("%");
    canvas.setTextColor(ST77XX_BLUE); 
    canvas.print("I2C: ");
    canvas.setTextColor(ST77XX_WHITE);
    for (uint8_t a=0x01; a<=0x7F; a++) {
      if (valid_i2c[a])  {
        canvas.print("0x");
        canvas.print(a, HEX);
        canvas.print(", ");
      }
    }
    canvas.println("");
    canvas.print("Buttons: ");
    Serial.println(digitalRead(0));
    Serial.println(digitalRead(1));
    Serial.println(digitalRead(2));
    if (!digitalRead(0)) {
      canvas.print("D0, ");
    }
    if (digitalRead(1)) {
      canvas.print("D1, ");
    }
    if (digitalRead(2)) {
      canvas.print("D2, ");
    }
    display.drawRGBBitmap(0, 0, canvas.getBuffer(), 240, 135);
    pinMode(TFT_BACKLITE, OUTPUT);
    digitalWrite(TFT_BACKLITE, HIGH);
  }
  j++;
  return;
}