/**************************************************************************//**
 * @file     gpio.c
 * @brief    GPIO driver source file
 *
 * SPDX-License-Identifier: Apache-2.0
 * @copyright (C) 2020 Nuvoton Technology Corp. All rights reserved.
 *****************************************************************************/

#include "NuMicro.h"

/** @addtogroup Standard_Driver Standard Driver
  @{
*/

/** @addtogroup GPIO_Driver GPIO Driver
  @{
*/

/** @addtogroup GPIO_EXPORTED_FUNCTIONS GPIO Exported Functions
  @{
*/

/**
 * @brief       Set GPIO operation mode
 *
 * @param[in]   port        GPIO port. It could be PA, PB, PC, PD, PE, PF, PG or PH.
 * @param[in]   u32PinMask  The single or multiple pins of specified GPIO port.
 *                          It could be BIT0 ~ BIT15 for PA, PB, PC, PD, PF and PH GPIO port.
 *                          It could be BIT0 ~ BIT13 for PE GPIO port.
 *                          It could be BIT0 ~ BIT11 for PG GPIO port.
 * @param[in]   u32Mode     Operation mode.  It could be \n
 *                          GPIO_MODE_INPUT, GPIO_MODE_OUTPUT, GPIO_MODE_OPEN_DRAIN, GPIO_MODE_QUASI.
 *
 * @return      None
 *
 * @details     This function is used to set specified GPIO operation mode.
 */
void GPIO_SetMode(GPIO_T *port, uint32_t u32PinMask, uint32_t u32Mode)
{
    uint32_t i;

    for (i = 0ul; i < GPIO_PIN_MAX; i++)
    {
        if ((u32PinMask & (1ul << i)) == (1ul << i))
        {
            port->MODE = (port->MODE & ~(0x3ul << (i << 1))) | (u32Mode << (i << 1));
        }
    }
}

/**
 * @brief       Enable GPIO interrupt
 *
 * @param[in]   port        GPIO port. It could be PA, PB, PC, PD, PE, PF, PG or PH.
 * @param[in]   u32Pin      The pin of specified GPIO port.
 *                          It could be 0 ~ 15 for PA, PB, PC, PD, PF and PH GPIO port.
 *                          It could be 0 ~ 13 for PE GPIO port.
 *                          It could be 0 ~ 11 for PG GPIO port.
 * @param[in]   u32IntAttribs   The interrupt attribute of specified GPIO pin. It could be \n
 *                              GPIO_INT_RISING, GPIO_INT_FALLING, GPIO_INT_BOTH_EDGE, GPIO_INT_HIGH, GPIO_INT_LOW.
 *
 * @return      None
 *
 * @details     This function is used to enable specified GPIO pin interrupt.
 */
void GPIO_EnableInt(GPIO_T *port, uint32_t u32Pin, uint32_t u32IntAttribs)
{
    port->INTTYPE = (port->INTTYPE & ~(1ul << u32Pin)) | (((u32IntAttribs >> 24) & 0xFFUL) << u32Pin);
    port->INTEN = (port->INTEN & ~(0x00010001ul << u32Pin)) | ((u32IntAttribs & 0xFFFFFFUL) << u32Pin);
}


/**
 * @brief       Disable GPIO interrupt
 *
 * @param[in]   port        GPIO port. It could be PA, PB, PC, PD, PE, PF, PG or PH.
 * @param[in]   u32Pin      The pin of specified GPIO port.
 *                          It could be 0 ~ 15 for PA, PB, PC, PD, PF and PH GPIO port.
 *                          It could be 0 ~ 13 for PE GPIO port.
 *                          It could be 0 ~ 11 for PG GPIO port.
 *
 * @return      None
 *
 * @details     This function is used to disable specified GPIO pin interrupt.
 */
void GPIO_DisableInt(GPIO_T *port, uint32_t u32Pin)
{
    port->INTTYPE &= ~(1UL << u32Pin);
    port->INTEN &= ~((0x00010001UL) << u32Pin);
}

/**
 * @brief       Set GPIO slew rate control
 *
 * @param[in]   port        GPIO port. It could be \ref PA, \ref PB, ... or \ref GPH
 * @param[in]   u32PinMask  The single or multiple pins of specified GPIO port.
 * @param[in]   u32Mode     Slew rate mode. \ref GPIO_SLEWCTL_NORMAL (maximum 40 MHz at 2.7V)
 *                                          \ref GPIO_SLEWCTL_HIGH (maximum 80 MHz at 2.7V)
 *                                          \ref GPIO_SLEWCTL_FAST (maximum 100 MHz at 2.7V)
 *
 * @return      None
 *
 * @details     This function is used to set specified GPIO operation mode.
 */
void GPIO_SetSlewCtl(GPIO_T *port, uint32_t u32PinMask, uint32_t u32Mode)
{
    uint32_t i;

    for (i = 0ul; i < GPIO_PIN_MAX; i++)
    {
        if (u32PinMask & (1ul << i))
        {
            port->SLEWCTL = (port->SLEWCTL & ~(0x3ul << (i << 1))) | (u32Mode << (i << 1));
        }
    }
}

/**
 * @brief       Set GPIO Pull-up and Pull-down control
 *
 * @param[in]   port          GPIO port. It could be \ref PA, \ref PB, ... or \ref GPH
 * @param[in]   u32PinMask    The pin of specified GPIO port. It could be 0 ~ 15.
 * @param[in]   u32Mode       The pin mode of specified GPIO pin. It could be
 *                                \ref GPIO_PUSEL_DISABLE
 *                                \ref GPIO_PUSEL_PULL_UP
 *                                \ref GPIO_PUSEL_PULL_DOWN
 *
 * @return      None
 *
 * @details     Set the pin mode of specified GPIO pin.
 */
void GPIO_SetPullCtl(GPIO_T *port, uint32_t u32PinMask, uint32_t u32Mode)
{
    uint32_t i;

    for (i = 0ul; i < GPIO_PIN_MAX; i++)
    {
        if (u32PinMask & (1ul << i))
        {
            port->PUSEL = (port->PUSEL & ~(0x3ul << (i << 1))) | (u32Mode << (i << 1));
        }
    }
}

/**
 * @brief       Set GPIO Driving Strength control
 *
 * @param[in]   port          GPIO port. It could be \ref PA, \ref PB, ... or \ref GPH
 * @param[in]   u32PinMask    The pin of specified GPIO port. It could be 0 ~ 15.
 * @param[in]   u32Driving    The pin driving strength of specified GPIO pin. It could be
 *                                \ref 000 = Px.n is minimum deiver strength.
 *                                \ref 111 = Px.n is maximum deiver strength.
 *
 * @return      None
 *
 * @details     Set the driving strength of specified GPIO pin.
 */
void GPIO_SetDrivingCtl(GPIO_T *port, uint32_t u32PinMask, uint32_t u32Driving)
{
    uint32_t i;

    for (i = 0ul; i < GPIO_PIN_MAX; i++)
    {
        if (u32PinMask & (1ul << i))
        {
            volatile uint32_t *pu32DS = &port->DSL + (i / 8);
            uint32_t u32Offset = 4 * (i % 8);
            *pu32DS = (*pu32DS & ~(0x7ul << u32Offset)) | ((u32Driving & 0x7) << u32Offset);
        }
    }
}

uint32_t GPIO_GetDrivingCtl(GPIO_T *port, uint32_t u32PinNo)
{
    volatile uint32_t *pu32DS = &port->DSL + (u32PinNo / 8);
    uint32_t u32Offset = 4 * (u32PinNo % 8) ;
    return (*pu32DS >> u32Offset) & 0x7;
}

/**
 * @brief       Set GPIO Power Mode
 *
 * @param[in]   port          GPIO port. It could be \ref PA, \ref PB, ... or \ref GPH
 * @param[in]   u32PinMask    The pin of specified GPIO port. It could be 0 ~ 15.
 * @param[in]   u32PowerMode  The pin driving strength of specified GPIO pin. It could be
 *                                \ref 0 = Px.n is 1.8v.
 *                                \ref 1 = Px.n is 3.3v.
 *
 * @return      None
 *
 * @details     Set the power mode of specified GPIO pin.
 *              Only PB.0~15, PD.1, PE.2~13, PF.0~13, PG.10, PJ.0~11, PK.9~10, PN.10~11 pad voltage can be selected.
 */
void GPIO_SetPowerMode(GPIO_T *port, uint32_t u32PinMask, uint32_t u32PowerMode)
{
    uint32_t i;

    for (i = 0ul; i < GPIO_PIN_MAX; i++)
    {
        if (u32PinMask & (1ul << i))
        {
            uint32_t value = port->SPW;
            value &= ~(1 << i);
            value |= ((u32PowerMode ? 1 : 0) << i);
            port->SPW = value;
        }
    }
}

uint32_t GPIO_GetPowerMode(GPIO_T *port, uint32_t u32PinNo)
{
    return (port->SPW & (1 << u32PinNo)) >> u32PinNo;
}

/**
 * @brief       Set GPIO Input Schmitt Trigger
 *
 * @param[in]   port          GPIO port. It could be \ref PA, \ref PB, ... or \ref GPH
 * @param[in]   u32PinMask    The pin of specified GPIO port. It could be 0 ~ 15.
 * @param[in]   u32SchmittTrigger The pin driving strength of specified GPIO pin. It could be
 *                                \ref 0 = Px.n input schmitt trigger function Disabled.
 *                                \ref 1 = Px.n input schmitt trigger function Enabled.
 *
 * @return      None
 *
 * @details     Set the power mode of specified GPIO pin.
 *              Only PB.0~15, PD.1, PE.2~13, PF.0~13, PG.10, PJ.0~11, PK.9~10, PN.10~11 pad voltage can be selected.
 */
void GPIO_SetSchmittTriggere(GPIO_T *port, uint32_t u32PinMask, uint32_t u32SchmittTrigger)
{
    uint32_t i;

    for (i = 0ul; i < GPIO_PIN_MAX; i++)
    {
        if (u32PinMask & (1ul << i))
        {
            uint32_t value = port->SMTEN;
            value &= ~(1 << i);
            value |= ((u32SchmittTrigger ? 1 : 0) << i);
            port->SMTEN = value;
        }
    }
}

uint32_t GPIO_GetSchmittTriggere(GPIO_T *port, uint32_t u32PinNo)
{
    return (port->SMTEN & (1 << u32PinNo)) >> u32PinNo;
}

/*@}*/ /* end of group GPIO_EXPORTED_FUNCTIONS */

/*@}*/ /* end of group GPIO_Driver */

/*@}*/ /* end of group Standard_Driver */