/*****************************************************
* I2C_LCD_TEST
*
* Used PIC24FJ64GA002 I2C2 Module
* Condition:
* 8MHz Internal RC oscillator, 4x PLL (8MHzx4= 32MHz)
* Fcy=32MHz/2=16MHz, Tcy=62.5ns
*
*  2012/10/13: N.Ishii
******************************************************/
#include <p24FJ64GA002.h>

// Set Configuration Word 1
_CONFIG1
(
	JTAGEN_OFF &	// JTAG Port: OFF
	GCP_OFF &		// Code Protect:@OFF
	GWRP_OFF &		// Write ProtectFOFF
	BKBUG_OFF &		// Background Debug: OFF
	COE_OFF &		// Clip On Emulation: OFF 
	ICS_PGx1 &		// Select ICD Pin: EMUC/EMUD-> PGC1/PGD1 For Common Use
	FWDTEN_OFF		// WDT: OFF 
)

// Set Configuration Word 2
_CONFIG2
( 
	IESO_OFF &		// 2 Speed Start Up: OFF
	FNOSC_FRCPLL &	// 8MHz Internal RC oscillator, 4x PLL-> 8MHzx4=32MHz
	FCKSM_CSDCMD &	// Change Clock Control: OFF@Clock Monitor: OFF
	OSCIOFNC_ON &	// OSCO/RA3 function: Used RA3
	IOL1WAY_OFF &	// RP Register Protection: Unlimited Writes To RP Registers
	I2C1SEL_PRI &	// I2C1 pins Select
	POSCMOD_NONE	// Oscillator Selection: Primary disabled
)

//-----------------------------------------------------------------------------------

/// Message Table
unsigned char Msg[17] = "Counter = xxxxx ";

//-----------------------------------------------------------------------------------
/// Prototype
void itostring(char digit, unsigned int data, char *buffer);

void lcd_init(void);
void lcd_cmd(unsigned char cmd);
void lcd_str(char* ptr);
void lcd_icon(unsigned char num, unsigned char onoff);

void Waitx1ms(int x);

//-----------------------------------------------------------------------------------

/// Main routine
int main(void)
{
	unsigned int Count, icon;
	unsigned char Flag;


	// CPU Clock Pre Scalere 1:1
	CLKDIV = 0;	

	// Set AD1PCFG: ANx Port is All Digital Pin
	AD1PCFG = 0xFFFF;

	// Set Port Direction
	TRISAbits.TRISA3 = 0;	// RA3 is RED_LED output used debug
	TRISAbits.TRISA4 = 0;	// RA4 is GREEN_LED output

	TRISBbits.TRISB2 = 1;	// RB2 is SDA2 (Hi)
	TRISBbits.TRISB3 = 1;	// RB3 is SCL2 (Hi)

	LATAbits.LATA3 = 1;	// RED LED OFF
	LATAbits.LATA4 = 1; // GREEN LED OFF

	// Initialize I2C2
	I2C2BRG = 0x9E;		// 100kHz
	I2C2CON = 0x8000;	// Enable I2C2

	// Initialize I2C_LCD
	lcd_init();
	icon = 0;
	Flag = 1;
	Count = 0;

	/**** Main Loop  *****/
	while(1)
	{
		LATAbits.LATA4 = ~LATAbits.LATA4;	// ALT GREEN LED 		

		lcd_cmd(0x80);	// Cursor Home (First Line)
		lcd_str("Hello! LCD Test!");
		itostring(5, Count++, Msg+10);

		lcd_cmd(0xC0);	// Cursor Home (Secand Line)
		lcd_str(Msg);
		lcd_icon(icon, Flag);
		icon++;
		if(icon >= 14){
			icon = 0;
			Flag ^= 1;
		}
		Waitx1ms(500);
	}
}

/***************************************
* Convert Integer -> ASCII
****************************************/
void itostring(char digit, unsigned int data, char *buffer)
{
	char i;

	buffer += digit;		// To Last of Strings
	for(i=digit; i>0; i--) {	// From LS. Digit To MS. Digit
		buffer--;
		*buffer = (data % 10) + '0';	// This Digit Value-> Ascii Convert ('0'=0x30)-> Store Buffer
		data = data / 10;		// Digit-1
	}
}