// 28 January 2022, Version 1, by Koepel, Public Domain
// For: https://forum.arduino.cc/t/8-bytes-to-double-conversion/952352/


// The Wokwi simulation uses Serial1 for the Raspberry Pi Pico
#define _SERIAL Serial1

const int InBytes[10] =
{
  0x0000, 0x0000,
  0x00C6, 0x006B, 0x0080, 0x00E8, 0x0069, 0x00F5, 0x00B0, 0x003F,
};

void setup() 
{
  _SERIAL.begin(115200);
  _SERIAL.println("Hello, the sketch has started");

  _SERIAL.print( "The sizeof(double) = ");
  _SERIAL.println( sizeof( double));

  // No union, just low level converting
  byte myBytes[8];
  for( int i=0; i<8; i++)
  {
    myBytes[i] = (byte) InBytes[i+2];      // take the lowest byte of every int
  }
  double myDouble;
  memcpy( &myDouble, myBytes, 8);

  _SERIAL.print( "My double = ");
  _SERIAL.println( myDouble, 15);
}

void loop() 
{
  delay( 100);
}