/****************************************************************************/
/* 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 LATDbits.LATD6 // UART_1_*SHDN
#define OUT_BIT_1 LATEbits.LATE0 // INSTR_1_ON
#define OUT_BIT_2 LATEbits.LATE2 // INSTR_2_ON
#define OUT_BIT_3 LATEbits.LATE4 // INSTR_3_ON
#define OUT_BIT_4 LATEbits.LATE7 // INSTR_4_ON
#define OUT_BIT_5 LATEbits.LATE1 // INSTR_1_OFF
#define OUT_BIT_6 LATEbits.LATE3 // INSTR_2_OFF
#define OUT_BIT_7 LATEbits.LATE5 // INSTR_3_OFF

#define OUT_BIT_8 LATEbits.LATE6 // INSTR_4_OFF
#define OUT_BIT_9 LATDbits.LATD7 // UART_2_*SHDN
#define OUT_BIT_10 LATDbits.LATD8 // UART_3_*SHDN
#define OUT_BIT_11 LATFbits.LATF5 // "Test LED"
#define OUT_BIT_12 LATFbits.LATF6 // DC-DC_CNTL
#define OUT_BIT_13 LATGbits.LATG2 // ADC_*SHDN
#define OUT_BIT_14 LATDbits.LATD11
#define OUT_BIT_15 LATFbits.LATF4

#define OUT_BIT_16 LATBbits.LATB1
#define OUT_BIT_17 LATBbits.LATB2 
#define OUT_BIT_18 LATBbits.LATB3 
#define OUT_BIT_19 LATBbits.LATB4 
#define OUT_BIT_20 LATBbits.LATB5 
#define OUT_BIT_21 LATBbits.LATB8 
#define OUT_BIT_22 LATBbits.LATB9 
#define OUT_BIT_23 LATCbits.LATC13 

#define OUT_BIT_24 LATCbits.LATC14 
#define OUT_BIT_25 dummyBit
#define OUT_BIT_26 dummyBit
#define OUT_BIT_27 dummyBit
#define OUT_BIT_28 dummyBit 
#define OUT_BIT_29 dummyBit  
#define OUT_BIT_30 dummyBit 
#define OUT_BIT_31 dummyBit 

#define TOTAL_IN_BITS  8

#define IN_BIT_0 PORTFbits.RF0 // INSTR_1_STATE
#define IN_BIT_1 PORTFbits.RF1 // INSTR_2_STATE
#define IN_BIT_2 PORTFbits.RF2 // INSTR_3_STATE
#define IN_BIT_3 PORTFbits.RF3 // INSTR_4_STATE
#define IN_BIT_4 PORTGbits.RG3 // ADC_BUSY
#define IN_BIT_5 dummyBit
#define IN_BIT_6 dummyBit
#define IN_BIT_7 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 = 0; // INSTR_CURR
	AD1PCFGbits.PCFG11 = 0; // INSTR_VOLT
	AD1PCFGbits.PCFG12 = 0; // INSTR_1_CURR
	AD1PCFGbits.PCFG13 = 0; // INSTR_2_CURR
	AD1PCFGbits.PCFG14 = 0; // INSTR_3_CURR
	AD1PCFGbits.PCFG15 = 0; // INSTR_4_CURR


    /* set outputs here */

	TRISBbits.TRISB1 = 0;
        TRISBbits.TRISB2 = 0;
	TRISBbits.TRISB3 = 0;
	TRISBbits.TRISB4 = 0;
        TRISBbits.TRISB5 = 0;
	TRISBbits.TRISB8 = 0;
	TRISBbits.TRISB9 = 0;

        TRISCbits.TRISC13 = 0;
        TRISCbits.TRISC14 = 0;

	TRISDbits.TRISD6 = 0;
	TRISDbits.TRISD7 = 0;
	TRISDbits.TRISD8 = 0;
        TRISDbits.TRISD11 = 0;

	TRISEbits.TRISE0 = 0;
	TRISEbits.TRISE1 = 0;
	TRISEbits.TRISE2 = 0;
	TRISEbits.TRISE3 = 0;
        TRISEbits.TRISE4 = 0;
        TRISEbits.TRISE5 = 0;
	TRISEbits.TRISE6 = 0;
	TRISEbits.TRISE7 = 0;

	TRISFbits.TRISF4 = 0;
	TRISFbits.TRISF5 = 0;
	TRISFbits.TRISF6 = 0;

	TRISGbits.TRISG2 = 0;

       
    /* set inputs here */
   
	TRISFbits.TRISF0 = 1;
	TRISFbits.TRISF1 = 1;
	TRISFbits.TRISF2 = 1;
        TRISFbits.TRISF3 = 1;

        TRISGbits.TRISG3 = 1;


    /* put out bits in default state here */
    Nop();
    OUT_BIT_0 = 1;  // uart 1 shdn
    Nop();
    OUT_BIT_1 = 0;  // 1 on
    Nop();
    OUT_BIT_2 = 0;  // 2 on
    Nop();
    OUT_BIT_3 = 0;  // 3 on
    Nop();
    OUT_BIT_4 = 1;  // 4 on
    Nop();
    OUT_BIT_5 = 0;  // 1 off
    Nop();
    OUT_BIT_6 = 0;  // 2 off
    Nop();
    OUT_BIT_7 = 0;  // 3 off
    Nop();
    OUT_BIT_8 = 1;  // 4 off
    Nop();
    OUT_BIT_9 = 1;
    Nop();
    OUT_BIT_10 = 1;
    Nop();
    OUT_BIT_11 = 0;
    Nop();
    OUT_BIT_12 = 1;
    Nop();
    OUT_BIT_13 = 1;
    Nop();
    OUT_BIT_14 = 1;
    Nop();
    OUT_BIT_15 = 1;
    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();
}

/* 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;
        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;
        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;
        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;
}