/****************************************************************************/
/* Copyright 2010 MBARI.                                                    */
/* MBARI Proprietary Information. All rights reserved.                      */
/****************************************************************************/
#include "dig_io.h"
#include "p24Fxxxx.h"
#include "sys_defs.h"

static int dummyBit;

#define TOTAL_OUT_BITS  32

#define OUT_BIT_0 LATBbits.LATB12 // Digital Bus Address Gate
#define OUT_BIT_1 LATBbits.LATB13 // Digital Bus Address 0 (LSB)
#define OUT_BIT_2 LATBbits.LATB14 // Digital Bus Address 1
#define OUT_BIT_3 LATBbits.LATB15 // Digital Bus Address 2 (MSB)
#define OUT_BIT_4 LATEbits.LATE6 // Digital Bus Out 0
#define OUT_BIT_5 LATEbits.LATE7 // Digital Bus Out 1
#define OUT_BIT_6 LATBbits.LATB3 // SD Card CS* (SPI Bus #2) 
#define OUT_BIT_7 LATBbits.LATB1 // EEPROM Chip CS* (SPI Bus #2) 

#define OUT_BIT_8 LATFbits.LATF0 // Power Supply Digital Out 0
#define OUT_BIT_9 LATFbits.LATF1 // Power Supply Digital Out 1
#define OUT_BIT_10 LATFbits.LATF2 // Power Supply Digital Out 2
#define OUT_BIT_11 LATBbits.LATB8 // EEPROM Chip WP*
#define OUT_BIT_12 LATBbits.LATB9 // EEPROM Chip Hold*
#define OUT_BIT_13 LATDbits.LATD5 // XPort Reset
#define OUT_BIT_14 LATGbits.LATG9 // SPI #1 CS (for daughter boards)
#define OUT_BIT_15 dummyBit 

#define OUT_BIT_16 LATBbits.LATB0 // Spare_01
#define OUT_BIT_17 LATDbits.LATD1 // Spare_02
#define OUT_BIT_18 LATDbits.LATD2 // Spare_03 
#define OUT_BIT_19 LATDbits.LATD3 // Spare_04 
#define OUT_BIT_20 LATDbits.LATD4 // Spare_05 
#define OUT_BIT_21 LATDbits.LATD7 // Spare_06  
#define OUT_BIT_22 LATDbits.LATD8 // Spare_07 
#define OUT_BIT_23 LATEbits.LATE0 // Spare_08 

#define OUT_BIT_24 LATEbits.LATE1 // Spare_09 
#define OUT_BIT_25 LATEbits.LATE2 // Spare_10
#define OUT_BIT_26 LATEbits.LATE3 // Spare_11 
#define OUT_BIT_27 LATGbits.LATG2 // Spare_12 
#define OUT_BIT_28 dummyBit 
#define OUT_BIT_29 dummyBit  
#define OUT_BIT_30 dummyBit 
#define OUT_BIT_31 dummyBit 

#define TOTAL_IN_BITS  24

#define IN_BIT_0 PORTFbits.RF5 // Slave Interrupt 0
#define IN_BIT_1 PORTFbits.RF4 // Slave Interrupt 1
#define IN_BIT_2 PORTFbits.RF3 // Slave Interrupt 2
#define IN_BIT_3 PORTEbits.RE4 // Digital Bus In 0
#define IN_BIT_4 PORTEbits.RE5 // Digital Bus In 1
#define IN_BIT_5 PORTBbits.RB10 // SD Card Detect
#define IN_BIT_6 PORTBbits.RB11 // SD Card Write Protect
#define IN_BIT_7 PORTDbits.RD6 // XPort Bootmode

#define IN_BIT_8 dummyBit // Placeholder for Spare_xx Inputs (if needed)
#define IN_BIT_9 dummyBit // Placeholder for Spare_xx Inputs (if needed)
#define IN_BIT_10 dummyBit // Placeholder for Spare_xx Inputs (if needed)
#define IN_BIT_11 dummyBit // Placeholder for Spare_xx Inputs (if needed)
#define IN_BIT_12 dummyBit // Placeholder for Spare_xx Inputs (if needed)
#define IN_BIT_13 dummyBit // Placeholder for Spare_xx Inputs (if needed)
#define IN_BIT_14 dummyBit // Placeholder for Spare_xx Inputs (if needed)
#define IN_BIT_15 dummyBit // Placeholder for Spare_xx Inputs (if needed)

#define IN_BIT_16 dummyBit // Placeholder for Spare_xx Inputs (if needed)
#define IN_BIT_17 dummyBit // Placeholder for Spare_xx Inputs (if needed)
#define IN_BIT_18 dummyBit // Placeholder for Spare_xx Inputs (if needed)
#define IN_BIT_19 dummyBit // Placeholder for Spare_xx Inputs (if needed)
#define IN_BIT_20 dummyBit 
#define IN_BIT_21 dummyBit 
#define IN_BIT_22 dummyBit 
#define IN_BIT_23 dummyBit 

/* init registers */
void digInit()
{
    /* Note: the AD1PCFGL and TRIS registers have to be set on 
    ADC pins if you want to use them as digital I/O pins */    
	
	/* Configure all analog/digital sharing pins to digital */
	// 1 = digital, 0 = analog (n=ADC#)

	AD1PCFGbits.PCFG0 = 1;
	AD1PCFGbits.PCFG1 = 1;
	AD1PCFGbits.PCFG2 = 1;
	AD1PCFGbits.PCFG3 = 1;
	AD1PCFGbits.PCFG4 = 1;
	AD1PCFGbits.PCFG5 = 1;
	AD1PCFGbits.PCFG6 = 1;
	AD1PCFGbits.PCFG7 = 1;
	AD1PCFGbits.PCFG8 = 1;
	AD1PCFGbits.PCFG9 = 1;
	AD1PCFGbits.PCFG10 = 1;
	AD1PCFGbits.PCFG11 = 1;
	AD1PCFGbits.PCFG12 = 1;
	AD1PCFGbits.PCFG13 = 1;
	AD1PCFGbits.PCFG14 = 1;
	AD1PCFGbits.PCFG15 = 1;


    /* set outputs here */

	TRISBbits.TRISB0 = 0;
	TRISBbits.TRISB1 = 0;
	TRISBbits.TRISB3 = 0;
	TRISBbits.TRISB4 = 0;
	TRISBbits.TRISB8 = 0;
	TRISBbits.TRISB9 = 0;
	TRISBbits.TRISB12 = 0;	
	TRISBbits.TRISB13 = 0;
	TRISBbits.TRISB14 = 0;
	TRISBbits.TRISB15 = 0;

	TRISDbits.TRISD1 = 0;
	TRISDbits.TRISD2 = 0;
	TRISDbits.TRISD3 = 0;
	TRISDbits.TRISD4 = 0;
	TRISDbits.TRISD5 = 0;
	TRISDbits.TRISD7 = 0;
	TRISDbits.TRISD8 = 0;

	TRISEbits.TRISE0 = 0;
	TRISEbits.TRISE1 = 0;
	TRISEbits.TRISE2 = 0;
	TRISEbits.TRISE3 = 0;
	TRISEbits.TRISE6 = 0;
	TRISEbits.TRISE7 = 0;

	TRISFbits.TRISF0 = 0;
	TRISFbits.TRISF1 = 0;
	TRISFbits.TRISF2 = 0;

	TRISGbits.TRISG2 = 0;
	TRISGbits.TRISG9 = 0;

	//TRISBbits.TRISB3 = 0; // Used for UART1 TxD 
       
    /* set inputs here */

   	// TRISBbits.TRISB12 = 1;
	// AD1PCFGbits.PCFG12 = 1;
	// TRISBbits.TRISB13 = 1;
	// AD1PCFGbits.PCFG13 = 1;

	TRISBbits.TRISB10 = 1;
	TRISBbits.TRISB11 = 1;    
	
	TRISDbits.TRISD6 = 1;

	TRISEbits.TRISE4 = 1;
	TRISEbits.TRISE5 = 1;

	TRISFbits.TRISF3 = 1;
	TRISFbits.TRISF4 = 1;
	TRISFbits.TRISF5 = 1;

	//TRISBbits.TRISB2 = 1; // Used for UART1 RxD


    /* put out bits in default state here */
    Nop();
    OUT_BIT_0 = 0;
    Nop();
    OUT_BIT_1 = 0;    
    Nop();
    OUT_BIT_2 = 0;
    Nop();
    OUT_BIT_3 = 0;
    Nop();
    OUT_BIT_4 = 0;
    Nop();
    OUT_BIT_5 = 0;
    Nop();
    OUT_BIT_6 = 1;
    Nop();
    OUT_BIT_7 = 1;
	Nop();
    OUT_BIT_8 = 0;
	Nop();
    OUT_BIT_9 = 0;
	Nop();
    OUT_BIT_10 = 0;
	Nop();
    OUT_BIT_11 = 1;
	Nop();
    OUT_BIT_12 = 1;
	Nop();
    OUT_BIT_13 = 1;
	Nop();
    OUT_BIT_14 = 0; // SPI #1 CS Active High
	Nop();
    OUT_BIT_15 = 0;
	Nop();
    OUT_BIT_16 = 1;
	Nop();
    OUT_BIT_17 = 1;
	Nop();
    OUT_BIT_18 = 1;
	Nop();
    OUT_BIT_19 = 1;
	Nop();
    OUT_BIT_20 = 1;
	Nop();
    OUT_BIT_21 = 1;
	Nop();
    OUT_BIT_22 = 1;
	Nop();
    OUT_BIT_23 = 1;
	Nop();
    OUT_BIT_24 = 1;
	Nop();
    OUT_BIT_25 = 1;
	Nop();
    OUT_BIT_26 = 1;
	Nop();
    OUT_BIT_27 = 1;
}

/* power bit API */
void digSetOutBit(int bit, int state)
{
    /* state is non zero, set it to one */
    if ( state )
        state = 1;
    
    Nop();

    switch (bit)
    {
        case 0: OUT_BIT_0 = state; break;
        case 1: OUT_BIT_1 = state; break;
        case 2: OUT_BIT_2 = state; break;
        case 3: OUT_BIT_3 = state; break;
        case 4: OUT_BIT_4 = state; break;
        case 5: OUT_BIT_5 = state; break;
        case 6: OUT_BIT_6 = state; break;
        case 7: OUT_BIT_7 = state; break;
		case 8: OUT_BIT_8 = state; break;
        case 9: OUT_BIT_9 = state; break;
        case 10: OUT_BIT_10 = state; break;
        case 11: OUT_BIT_11 = state; break;
        case 12: OUT_BIT_12 = state; break;
        case 13: OUT_BIT_13 = state; break;
        case 14: OUT_BIT_14 = state; break;
        case 15: OUT_BIT_15 = state; break;
		case 16: OUT_BIT_16 = state; break;
        case 17: OUT_BIT_17 = state; break;
        case 18: OUT_BIT_18 = state; break;
        case 19: OUT_BIT_19 = state; break;
        case 20: OUT_BIT_20 = state; break;
        case 21: OUT_BIT_21 = state; break;
        case 22: OUT_BIT_22 = state; break;
        case 23: OUT_BIT_23 = state; break;
		case 24: OUT_BIT_24 = state; break;
        case 25: OUT_BIT_25 = state; break;
        case 26: OUT_BIT_26 = state; break;
        case 27: OUT_BIT_27 = state; break;
        default: return;
    }
}

int digGetOutBit(int bit)
{
    Nop();

    /* set dummyBit to 0 so undefined bits always read back as 0 */
    dummyBit = 0;
    
    switch (bit)
    {
        case 0: return (int)OUT_BIT_0;
        case 1: return (int)OUT_BIT_1;
        case 2: return (int)OUT_BIT_2;
        case 3: return (int)OUT_BIT_3;
        case 4: return (int)OUT_BIT_4;
        case 5: return (int)OUT_BIT_5;
        case 6: return (int)OUT_BIT_6;
        case 7: return (int)OUT_BIT_7;
		case 8: return (int)OUT_BIT_8;
        case 9: return (int)OUT_BIT_9;
        case 10: return (int)OUT_BIT_10;
        case 11: return (int)OUT_BIT_11;
        case 12: return (int)OUT_BIT_12;
        case 13: return (int)OUT_BIT_13;
        case 14: return (int)OUT_BIT_14;
        case 15: return (int)OUT_BIT_15;
		case 16: return (int)OUT_BIT_16;
        case 17: return (int)OUT_BIT_17;
        case 18: return (int)OUT_BIT_18;
        case 19: return (int)OUT_BIT_19;
        case 20: return (int)OUT_BIT_20;
        case 21: return (int)OUT_BIT_21;
        case 22: return (int)OUT_BIT_22;
        case 23: return (int)OUT_BIT_23;
		case 24: return (int)OUT_BIT_24;
        case 25: return (int)OUT_BIT_25;
        case 26: return (int)OUT_BIT_26;
        case 27: return (int)OUT_BIT_27;
        default: return 0;
    }
}

void digSetOutPort(unsigned int val)
{
    int i;
    unsigned int bit = 0x0001;
     
    for (i = 0; i < TOTAL_OUT_BITS; ++i)
    {
        digSetOutBit(i, (val & bit));
        bit <<= 1;
    }
}

unsigned int digGetOutPort(void)
{
    int i;
    unsigned int bit = 0x0001;
    unsigned int val = 0;

    for (i = 0; i < TOTAL_OUT_BITS; ++i)
    {
        if ( digGetOutBit(i) )
            val += bit;
        
        bit <<= 1;
    }

    return val;
}

/* digital input API */
int digGetInBit(int bit)
{
    Nop();

    /* set dummyBit to 0 so undefined bits always read back as 0 */
    dummyBit = 0;
    
    switch (bit)
    {
        case 0: return (int)IN_BIT_0;
        case 1: return (int)IN_BIT_1;
        case 2: return (int)IN_BIT_2;
        case 3: return (int)IN_BIT_3;
        case 4: return (int)IN_BIT_4;
        case 5: return (int)IN_BIT_5;
        case 6: return (int)IN_BIT_6;
        case 7: return (int)IN_BIT_7;
		case 8: return (int)IN_BIT_8;
        case 9: return (int)IN_BIT_9;
        case 10: return (int)IN_BIT_10;
        case 11: return (int)IN_BIT_11;
        case 12: return (int)IN_BIT_12;
        case 13: return (int)IN_BIT_13;
        case 14: return (int)IN_BIT_14;
        case 15: return (int)IN_BIT_15;
		case 16: return (int)IN_BIT_16;
        case 17: return (int)IN_BIT_17;
        case 18: return (int)IN_BIT_18;
        case 19: return (int)IN_BIT_19;
        default: return 0;
    }
}

unsigned int digGetInPort(void)
{
    int i;
    unsigned int bit = 0x0001;
    unsigned int val = 0;

    for (i = 0; i < TOTAL_IN_BITS; ++i)
    {
        if ( digGetInBit(i) )
            val += bit;
        
        bit <<= 1;
    }

    return val;
}