/*
  Programmed and tested with: Arduino IDE 1.8.19 & avr-gcc 13.2.0
  30.10.2023
  License: GNU GPLv3
  https://www.mikrocontroller.net/topic/560008#7519958
  https://www.mikrocontroller.net/topic/560008#7520003
*/

#pragma once

#include <Arduino.h>
#include "MyFRAM_I2C.h"

namespace MY_FRAMCONTROL
{ 
  consteval uint32_t sizeofObject (const auto &data) { return sizeof(data); }
  consteval uint32_t lengthStructure (const auto &data, const size_t N) { return sizeofObject(data)/N; }
  constinit uint8_t TWI_BUFFER_SIZE {BUFFER_LENGTH-2}; // 'BUFFER_LENGTH' in twi.h abzüglich 2 Bytes Speicherzellenadressierung
}

/*                I2C Addr
                  |                 wire0/wire1  
                  |                 |              Capacity in kBit       
                  |                 |              |                 Object for length determination etc.                 
                  |                 |              |                 |               initial address of object in FRAM
                  |                 |              |                 |               |                              */
template <uint8_t i2cAddr, TwoWire& line, uint16_t memorySize, auto &myObj, uint32_t initObjAddr>  
class MyFramControl { };  // allg. Template

template <uint8_t i2cAddr, TwoWire& line, uint16_t memorySize, typename T, size_t N, T(&myObj)[N], uint32_t initObjAddr> 
class MyFramControl <i2cAddr, line, memorySize, myObj, initObjAddr>  // array Template Spezialisierung
{
  static_assert((10<=BUFFER_LENGTH), "TWI buffer size smaller than 10 is possible but not practical, Wire src twi.h" );
  static_assert(((initObjAddr+sizeof(myObj)) < (1024UL*memorySize/8)), "Object to large or Addr to high" );
  private:  
    MyFRAM_I2C <i2cAddr, line, memorySize> fram;
       
  public:
    MyFramControl() = default;
    
    uint8_t isConnected (void) { return fram.isConnected(); }
     
    void readTo (T(&otherObj)[N]) { fram.read(initObjAddr, otherObj); }    
};


// --- Programmcode: ---------------------------------------------------------------------------------------

#include <Wire.h>
#include <MyFramControl.h>

TwoWire &wire0 {Wire};

struct Daten {
  uint16_t left  {};
  uint16_t right {}; 
  uint16_t last  {};  
  const char name [12] {'\0'};
};

Daten obj0 { 1311, 1611, 1501, "Weiche.A" };

constexpr uint16_t FRAM_INITIAL_ADDR {500};

/*              I2C Addr
                |     wire0/wire1  
                |     |     Capacity in kBit          
                |     |     |    Object for the data processing
                |     |     |    |        initial address of object in FRAM
                |     |     |    |        |                              */
MyFramControl <0x57, wire0, 64, obj0, FRAM_INITIAL_ADDR> controlObj0;

void setup()
{
  Wire.begin();
  controlObj0.isConnected();   
}

void loop (void)
{ 
}

// --- Fehlermeldung: ---------------------------------------------------------------------------------------

\Example_FramControl_Lib_Error.ino: In function 'void setup()':
Example_FramControl_Lib_Error:35:15: error: 'class MyFramControl<87, Wire, 64, obj0, 500>' has no member named 'isConnected'
   35 |   controlObj0.isConnected();
      |               ^~~~~~~~~~~

exit status 1
'class MyFramControl<87, Wire, 64, obj0, 500>' has no member named 'isConnected'