// I2C_EepromAccess.cpp : Defines the entry point for the console application.
//

#include <stdio.h>
#include <conio.h>
#include <direct.h>

#include "stdafx.h"

// I2CC - Include the SPIIC DLL
extern "C" {
   #include "I2CC.h"
}

int _tmain(int argc, _TCHAR* argv[])
{
   int ch;

   //
   // Go to the work directory
   //
   printf("\nGoing to the work directory...\n");
   #ifdef _DEBUG
      _chdir("..\\debug");
   #else
      _chdir("..\\release");
   #endif;

   //
   // Initialise the I2C library
   //
   printf("\nInitialising the I2C library... ");
   i2c_I2CC();
   printf("done\n");

   //
   // Initialise the I2C library
   //
   printf("\nAllocate and clear receive buffer... ");
   unsigned char pDataWr[2];
   unsigned char pDataRd[2];

   //
   // Set I2C speed to 100kHz
   //
   printf("\nSet I2C speed to 100kHz...\n");
   i2c_SetSpeed(100);
   
   //
   // Executing I2C write transfer
   //
   pDataWr[0] = 0x12;
   pDataWr[1] = 0x34;
   printf("\nWriting 0x%02X to address 0x%02x...\n", pDataWr[1], pDataWr[0]);
   i2c_CmdBufAppend(2, 0x50, 1, 2, (char *)pDataWr, true, true); // Cmd = 2       : I2C write
                                                                 // Address = 0x50
                                                                 // AddrType = 1  : 7-bit address
                                                                 // Length = 2    : 2 byte payload
                                                                 // pDataWr       : buffer with 2 bytes payload (0x1234)
                                                                 // STA = true    : generate start
                                                                 // STO = true    : generate stop

   i2c_RunMaster();
   i2c_CmdBufDeleteAll();

   pDataWr[0] = 0x13;
   pDataWr[1] = 0x56;
   printf("Writing 0x%02X to address 0x%02x...\n", pDataWr[1], pDataWr[0]);
   i2c_CmdBufAppend(2, 0x50, 1, 2, (char *)pDataWr, true, true); // Cmd = 2       : I2C write
                                                                 // Address = 0x50
                                                                 // AddrType = 1  : 7-bit address
                                                                 // Length = 2    : 2 byte payload
                                                                 // pDataWr       : buffer with 2 bytes payload (0x1356)
                                                                 // STA = true    : generate start
                                                                 // STO = true    : generate stop
   i2c_RunMaster();
   i2c_CmdBufDeleteAll();

   //
   // Executing dummy write to set EEPROM address
   //
   printf("\nExecuting dummy write to set EEPROM address...\n");
   pDataWr[0] = 0x12;
   i2c_CmdBufAppend(2, 0x50, 1, 1, (char *)pDataWr, true, true); // Cmd = 2       : I2C write
                                                                 // Address = 0x50
                                                                 // AddrType = 1  : 7-bit address
                                                                 // Length = 1    : 1 byte payload
                                                                 // pDataWr       : buffer with 1 byte payload (0x12)
                                                                 // STA = true    : generate start
                                                                 // STO = true    : generate stop
   i2c_RunMaster();
   i2c_CmdBufDeleteAll();

   //
   // Executing I2C read transfer
   //
   printf("\nReading EEPROM...\n");
   pDataRd[0] = 0;
   pDataRd[1] = 0;
   i2c_CmdBufAppend(1, 0x50, 1, 1, (char *)&pDataRd[0], true, true); // Cmd = 1         : I2C read
                                                                     // Address = 0x50
                                                                     // AddrType = 1    : 7-bit address
                                                                     // Length = 1      : 1 byte payload
                                                                     // pDataRd         : buffer receiving 1 byte
                                                                     // STA = true      : generate start
                                                                     // STO = true      : generate stop
   i2c_CmdBufAppend(1, 0x50, 1, 1, (char *)&pDataRd[1], true, true); // Cmd = 1         : I2C read
                                                                     // Address = 0x50
                                                                     // AddrType = 1    : 7-bit address
                                                                     // Length = 1      : 1 byte payload
                                                                     // pDataRd         : buffer receiving 1 byte
                                                                     // STA = true      : generate start
                                                                     // STO = true      : generate stop
   i2c_RunMaster();
   i2c_CmdBufDeleteAll();
   printf("\tpDataRd[0] : 0x%02X\n", pDataRd[0]);
   printf("\tpDataRd[1] : 0x%02X\n", pDataRd[1]);

   //
   // Perform library cleanup
   //
   printf("\nUnitialising the I2C library... ");
   i2c_Terminate();
   printf("done\n\n");

   //
   // Wait for user input to close the window
   //
   printf("Press any key...", 1);
   ch = _getch();

   return 0;
}