Configure I2C in MCC

Once you Generate the MCC code it will have dealt with initialising the I2C port ready for you to use it.

In your code

#include <definitions.h>			//Include all the MCC generated files so their fucntions can be called




//IN YOUR INITIALSE CODE
	//----- SETUP I2C 4 -----
	//Used for: 
	//Setup I2C using MCC:
	//	Setup I2C:
	//		Operating Mode: Master
	//		Disable Slew Rate Control: No (disable for Standard Speed mode (100 kHz) and 1 MHz mode, enable for High Speed mode (400 kHz))
	//		SMBus Input Levels: No
	//		Stop in Idle Mode bit: Yes (Yes=Discontinue module operation when the device enters Idle mode)
	//		I2C Band Rate (hz): 400000
	//		SDA Hold Time: Min 100nS (Delay shouldn't normally be needed)
	//		Include Force Write I2C Function: No
	//	Setup interrupts:
	//		Enable I2C4 Bus Collision Event Interrupt = Will already be set to Yes
	//		Enable I2C4 SlaveEvent Interrupt = Will already be set to Yes
	//		Enable I2C4 Master Event Interrupt: Will already be set to Yes
	//		Priority (set for all): 3	//<<<Set as required for your application
	//		Subpriority (set for all): 0	//<<<Set as required for your application
	
	//I2C4_CallbackRegister(I2C4_MyEventHandler,(uintptr_t)NULL);		//Register my callback function to be called when the I2C operation completes (optional)


//HOW TO PERFORM A READ OPERATION
/*
#define	MY_I2C_ADDRESS		0xa0
	uint8_t RxData[1];
	if (I2C4_Read((MY_I2C_ADDRESS >> 1), &RxData[0], sizeof(RxData)))		//Address needs passing in bits6:0
	{
		//READ STARTED		
		while (I2C4_IsBusy())
			;
		
		//READ COMPLETED
		if (I2C4_ErrorGet() == I2C_ERROR_NONE)
		{
			
		}
	}
*/


//HOW TO PERFORM A WRITE OPERATION
/*
#define	MY_I2C_ADDRESS		0xa0
	uint8_t TxData[1] = {0x00};
	if (I2C4_Write((MY_I2C_ADDRESS >> 1), &TxData[0], sizeof(TxData)))		//Address needs passing in bits6:0
	{
		//WRITE STARTED
		while (I2C4_IsBusy())
			;
		
		//WRITE COMPLETED
		if (I2C4_ErrorGet() == I2C_ERROR_NONE)
		{
			
		}
	}
*/


//HOW TO PERFORM A WRITE READ OPERATION
/*
#define	MY_I2C_ADDRESS		0xa0
	uint8_t RxData[1];
	uint8_t TxData[1] = {0x00};
	if (I2C4_WriteRead((MY_I2C_ADDRESS >> 1), &TxData[0], sizeof(TxData), &RxData[0], sizeof(RxData)))		//Address needs passing in bits6:0
	{
		//WRITE READ STARTED
		while (I2C4_IsBusy())
			;
		
		//WRITE READ COMPLETED
		if (I2C4_ErrorGet() == I2C_ERROR_NONE)
		{
			
		}
	}
*/


//*************************************************
//*************************************************
//********** I2C4 OPERATION COMPLETE IRQ **********
//*************************************************
//*************************************************
/*
void I2C4_MyEventHandler (uintptr_t context)
{
	if (I2C4_ErrorGet() != I2C_ERROR_NONE)
	{
		//AN ERROR OCCURED
	}
	else
	{
		//LAST OPERATION COMPLETED (Stop bit)
		
	}
}
*/

Other UART functions

MCC will have created a few useful functions you can call – see the file it generated in: /config/default/peripheral/i2c/