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 * Copyright (c) 2014, Texas Instruments Incorporated
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//*****************************************************************************
//
// mpy32.c - Driver for the mpy32 Module.
//
//*****************************************************************************

//*****************************************************************************
//
//! \addtogroup mpy32_api mpy32
//! @{
//
//*****************************************************************************

#include "inc/hw_regaccess.h"
#include "inc/hw_memmap.h"

#ifdef __MSP430_HAS_MPY32__
#include "mpy32.h"

#include <assert.h>

void MPY32_setWriteDelay(uint16_t writeDelaySelect)
{
    HWREG16(MPY32_BASE + OFS_MPY32CTL0) &= ~(MPYDLY32 + MPYDLYWRTEN);
    HWREG16(MPY32_BASE + OFS_MPY32CTL0) |= writeDelaySelect;
}

void MPY32_enableSaturationMode(void)
{
    HWREG8(MPY32_BASE + OFS_MPY32CTL0_L) |= MPYSAT;
}

void MPY32_disableSaturationMode(void)
{
    HWREG8(MPY32_BASE + OFS_MPY32CTL0_L) &= ~(MPYSAT);
}

uint8_t MPY32_getSaturationMode(void)
{
    return (HWREG8(MPY32_BASE + OFS_MPY32CTL0_L) & (MPYSAT));
}

void MPY32_enableFractionalMode(void)
{
    HWREG8(MPY32_BASE + OFS_MPY32CTL0_L) |= MPYFRAC;
}

void MPY32_disableFractionalMode(void)
{
    HWREG8(MPY32_BASE + OFS_MPY32CTL0_L) &= ~(MPYFRAC);
}

uint8_t MPY32_getFractionalMode(void)
{
    return (HWREG8(MPY32_BASE + OFS_MPY32CTL0_L) & (MPYFRAC));
}

void MPY32_setOperandOne8Bit(uint8_t multiplicationType,
                             uint8_t operand)
{
    HWREG8(MPY32_BASE + OFS_MPY + multiplicationType) = operand;
}

void MPY32_setOperandOne16Bit(uint8_t multiplicationType,
                              uint16_t operand)
{
    HWREG16(MPY32_BASE + OFS_MPY + multiplicationType) = operand;
}

void MPY32_setOperandOne24Bit(uint8_t multiplicationType,
                              uint32_t operand)
{
    multiplicationType <<= 1;
    HWREG16(MPY32_BASE + OFS_MPY32L + multiplicationType) = operand;
    HWREG8(MPY32_BASE + OFS_MPY32H + multiplicationType) = (operand >> 16);
}

void MPY32_setOperandOne32Bit(uint8_t multiplicationType,
                              uint32_t operand)
{
    multiplicationType <<= 1;
    HWREG16(MPY32_BASE + OFS_MPY32L + multiplicationType) = operand;
    HWREG16(MPY32_BASE + OFS_MPY32H + multiplicationType) = (operand >> 16);
}

void MPY32_setOperandTwo8Bit(uint8_t operand)
{
    HWREG8(MPY32_BASE + OFS_OP2) = operand;
}

void MPY32_setOperandTwo16Bit(uint16_t operand)
{
    HWREG16(MPY32_BASE + OFS_OP2) = operand;
}

void MPY32_setOperandTwo24Bit(uint32_t operand)
{
    HWREG16(MPY32_BASE + OFS_OP2L) = operand;
    HWREG8(MPY32_BASE + OFS_OP2H) = (operand >> 16);
}

void MPY32_setOperandTwo32Bit(uint32_t operand)
{
    HWREG16(MPY32_BASE + OFS_OP2L) = operand;
    HWREG16(MPY32_BASE + OFS_OP2H) = (operand >> 16);
}

uint64_t MPY32_getResult(void)
{
    uint64_t result;

    result = HWREG16(MPY32_BASE + OFS_RES0);
    result += ((uint64_t)HWREG16(MPY32_BASE + OFS_RES1) << 16);
    result += ((uint64_t)HWREG16(MPY32_BASE + OFS_RES2) << 32);
    result += ((uint64_t)HWREG16(MPY32_BASE + OFS_RES3) << 48);
    return (result);
}

uint16_t MPY32_getSumExtension(void)
{
    return (HWREG16(MPY32_BASE + OFS_SUMEXT));
}

uint16_t MPY32_getCarryBitValue(void)
{
    return (HWREG16(MPY32_BASE + OFS_MPY32CTL0) | MPYC);
}

void MPY32_clearCarryBitValue(void)
{
    HWREG16(MPY32_BASE + OFS_MPY32CTL0) &= ~MPYC;
}

void MPY32_preloadResult(uint64_t result)
{
    HWREG16(MPY32_BASE + OFS_RES0) = (result & 0xFFFF);
    HWREG16(MPY32_BASE + OFS_RES1) = ((result >> 16) & 0xFFFF);
    HWREG16(MPY32_BASE + OFS_RES2) = ((result >> 32) & 0xFFFF);
    HWREG16(MPY32_BASE + OFS_RES3) = ((result >> 48) & 0xFFFF);
}

#endif
//*****************************************************************************
//
//! Close the doxygen group for mpy32_api
//! @}
//
//*****************************************************************************