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/**
 *   \brief This will enable or disable the JTAG debug interface to allow for
 *   proper temperature sensor readings.
 *
 *   \param val Flag to trigger the proper debug mode.
*/
void
menu_debug_mode(uint8_t *val)
{
    uint8_t sreg = SREG;
    cli();
    if(*val){
        /* Disable - Could use inline ASM to meet timing requirements. */
        MCUCR |= (1 << JTD);
        MCUCR |= (1 << JTD);
        /* Needed for timing critical JTD disable. */
        temp_init();
        /* Store setting in EEPROM. */
        eeprom_write_byte(EEPROM_DEBUG_ADDR, 0xFF);
    }
    else{
        /* Enable - Could use inline ASM to meet timing requirements. */
        MCUCR &= ~(1 << JTD);
        MCUCR &= ~(1 << JTD);
        /* Store setting in EEPROM. */
        eeprom_write_byte(EEPROM_DEBUG_ADDR, 0x01);
    }
    SREG = sreg;
}

/**
 *   \brief This will initialize the digital IO and adc channel for temperture readings.
 *
 *   \retval 0 Place holder for returning status.
*/
int
temp_init(void)
{
    /* Disable the Digital IO for the analog readings. */
    DIDR0 |= (1 << ADC4D);

    /* Temp sens power pin as output */
    TEMP_DDR |= (1 << TEMP_BIT_PWR);

    /* Power off temp sensor */
    TEMP_PORT &= ~(1 << TEMP_BIT_PWR);

    /* Temp sens input, no pullup */
    TEMP_DDR &= ~(1 << TEMP_BIT_IN);
    TEMP_PORT &= ~(1 << TEMP_BIT_IN);

    temp_initialized = true;

    return 0;
}