//*****************************************************************************
//
// gpio.h - Defines and Macros for GPIO API.
//
// Copyright (c) 2005-2013 Texas Instruments Incorporated.  All rights reserved.
// Software License Agreement
// 
//   Redistribution and use in source and binary forms, with or without
//   modification, are permitted provided that the following conditions
//   are met:
// 
//   Redistributions of source code must retain the above copyright
//   notice, this list of conditions and the following disclaimer.
// 
//   Redistributions in binary form must reproduce the above copyright
//   notice, this list of conditions and the following disclaimer in the
//   documentation and/or other materials provided with the  
//   distribution.
// 
//   Neither the name of Texas Instruments Incorporated nor the names of
//   its contributors may be used to endorse or promote products derived
//   from this software without specific prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// 
// This is part of revision 1.0 of the Tiva Peripheral Driver Library.
//
//*****************************************************************************

#ifndef __GPIO_H__
#define __GPIO_H__

//*****************************************************************************
//
// If building with a C++ compiler, make all of the definitions in this header
// have a C binding.
//
//*****************************************************************************
#ifdef __cplusplus
extern "C"
{
#endif

//*****************************************************************************
//
// The following values define the bit field for the ui8Pins argument to
// several of the APIs.
//
//*****************************************************************************
#define GPIO_PIN_0              0x00000001  // GPIO pin 0
#define GPIO_PIN_1              0x00000002  // GPIO pin 1
#define GPIO_PIN_2              0x00000004  // GPIO pin 2
#define GPIO_PIN_3              0x00000008  // GPIO pin 3
#define GPIO_PIN_4              0x00000010  // GPIO pin 4
#define GPIO_PIN_5              0x00000020  // GPIO pin 5
#define GPIO_PIN_6              0x00000040  // GPIO pin 6
#define GPIO_PIN_7              0x00000080  // GPIO pin 7

//*****************************************************************************
//
// Values that can be passed to GPIODirModeSet as the ui32PinIO parameter, and
// returned from GPIODirModeGet.
//
//*****************************************************************************
#define GPIO_DIR_MODE_IN        0x00000000  // Pin is a GPIO input
#define GPIO_DIR_MODE_OUT       0x00000001  // Pin is a GPIO output
#define GPIO_DIR_MODE_HW        0x00000002  // Pin is a peripheral function

//*****************************************************************************
//
// Values that can be passed to GPIOIntTypeSet as the ui32IntType parameter,
// and returned from GPIOIntTypeGet.
//
//*****************************************************************************
#define GPIO_FALLING_EDGE       0x00000000  // Interrupt on falling edge
#define GPIO_RISING_EDGE        0x00000004  // Interrupt on rising edge
#define GPIO_BOTH_EDGES         0x00000001  // Interrupt on both edges
#define GPIO_LOW_LEVEL          0x00000002  // Interrupt on low level
#define GPIO_HIGH_LEVEL         0x00000006  // Interrupt on high level
#define GPIO_DISCRETE_INT       0x00010000  // Interrupt for individual pins

//*****************************************************************************
//
// Values that can be passed to GPIOPadConfigSet as the ui32Strength parameter,
// and returned by GPIOPadConfigGet in the *pui32Strength parameter.
//
//*****************************************************************************
#define GPIO_STRENGTH_2MA       0x00000001  // 2mA drive strength
#define GPIO_STRENGTH_4MA       0x00000002  // 4mA drive strength
#define GPIO_STRENGTH_8MA       0x00000004  // 8mA drive strength
#define GPIO_STRENGTH_8MA_SC    0x0000000C  // 8mA drive with slew rate control

//*****************************************************************************
//
// Values that can be passed to GPIOPadConfigSet as the ui32PadType parameter,
// and returned by GPIOPadConfigGet in the *pui32PadType parameter.
//
//*****************************************************************************
#define GPIO_PIN_TYPE_STD       0x00000008  // Push-pull
#define GPIO_PIN_TYPE_STD_WPU   0x0000000A  // Push-pull with weak pull-up
#define GPIO_PIN_TYPE_STD_WPD   0x0000000C  // Push-pull with weak pull-down
#define GPIO_PIN_TYPE_OD        0x00000009  // Open-drain
#define GPIO_PIN_TYPE_ANALOG    0x00000000  // Analog comparator

//*****************************************************************************
//
// Values that can be passed to GPIOIntEnable() and GPIOIntDisable() functions
// in the ui32IntFlags parameter.
//
//*****************************************************************************
#define GPIO_INT_PIN_0          0x00000001
#define GPIO_INT_PIN_1          0x00000002
#define GPIO_INT_PIN_2          0x00000004
#define GPIO_INT_PIN_3          0x00000008
#define GPIO_INT_PIN_4          0x00000010
#define GPIO_INT_PIN_5          0x00000020
#define GPIO_INT_PIN_6          0x00000040
#define GPIO_INT_PIN_7          0x00000080

//*****************************************************************************
//
// Prototypes for the APIs.
//
//*****************************************************************************
extern void GPIODirModeSet(uint32_t ui32Port, uint8_t ui8Pins,
                           uint32_t ui32PinIO);
extern uint32_t GPIODirModeGet(uint32_t ui32Port, uint8_t ui8Pin);
extern void GPIOIntTypeSet(uint32_t ui32Port, uint8_t ui8Pins,
                           uint32_t ui32IntType);
extern uint32_t GPIOIntTypeGet(uint32_t ui32Port, uint8_t ui8Pin);
extern void GPIOPadConfigSet(uint32_t ui32Port, uint8_t ui8Pins,
                             uint32_t ui32Strength, uint32_t ui32PadType);
extern void GPIOPadConfigGet(uint32_t ui32Port, uint8_t ui8Pin,
                             uint32_t *pui32Strength, uint32_t *pui32PadType);
extern void GPIOIntEnable(uint32_t ui32Port, uint32_t ui32IntFlags);
extern void GPIOIntDisable(uint32_t ui32Port, uint32_t ui32IntFlags);
extern uint32_t GPIOIntStatus(uint32_t ui32Port, bool bMasked);
extern void GPIOIntClear(uint32_t ui32Port, uint32_t ui32IntFlags);
extern void GPIOIntRegister(uint32_t ui32Port, void (*pfnIntHandler)(void));
extern void GPIOIntUnregister(uint32_t ui32Port);
extern int32_t GPIOPinRead(uint32_t ui32Port, uint8_t ui8Pins);
extern void GPIOPinWrite(uint32_t ui32Port, uint8_t ui8Pins, uint8_t ui8Val);
extern void GPIOPinConfigure(uint32_t ui32PinConfig);
extern void GPIOPinTypeADC(uint32_t ui32Port, uint8_t ui8Pins);
extern void GPIOPinTypeCAN(uint32_t ui32Port, uint8_t ui8Pins);
extern void GPIOPinTypeComparator(uint32_t ui32Port, uint8_t ui8Pins);
extern void GPIOPinTypeEPI(uint32_t ui32Port, uint8_t ui8Pins);
extern void GPIOPinTypeEthernetLED(uint32_t ui32Port, uint8_t ui8Pins);
extern void GPIOPinTypeEthernetMII(uint32_t ui32Port, uint8_t ui8Pins);
extern void GPIOPinTypeFan(uint32_t ui32Port, uint8_t ui8Pins);
extern void GPIOPinTypeGPIOInput(uint32_t ui32Port, uint8_t ui8Pins);
extern void GPIOPinTypeGPIOOutput(uint32_t ui32Port, uint8_t ui8Pins);
extern void GPIOPinTypeGPIOOutputOD(uint32_t ui32Port, uint8_t ui8Pins);
extern void GPIOPinTypeI2C(uint32_t ui32Port, uint8_t ui8Pins);
extern void GPIOPinTypeI2CSCL(uint32_t ui32Port, uint8_t ui8Pins);
extern void GPIOPinTypeI2S(uint32_t ui32Port, uint8_t ui8Pins);
extern void GPIOPinTypeLPC(uint32_t ui32Port, uint8_t ui8Pins);
extern void GPIOPinTypePECIRx(uint32_t ui32Port, uint8_t ui8Pins);
extern void GPIOPinTypePECITx(uint32_t ui32Port, uint8_t ui8Pins);
extern void GPIOPinTypePWM(uint32_t ui32Port, uint8_t ui8Pins);
extern void GPIOPinTypeQEI(uint32_t ui32Port, uint8_t ui8Pins);
extern void GPIOPinTypeSSI(uint32_t ui32Port, uint8_t ui8Pins);
extern void GPIOPinTypeTimer(uint32_t ui32Port, uint8_t ui8Pins);
extern void GPIOPinTypeUART(uint32_t ui32Port, uint8_t ui8Pins);
extern void GPIOPinTypeUSBAnalog(uint32_t ui32Port, uint8_t ui8Pins);
extern void GPIOPinTypeUSBDigital(uint32_t ui32Port, uint8_t ui8Pins);
extern void GPIODMATriggerEnable(uint32_t ui32Port, uint8_t ui8Pins);
extern void GPIODMATriggerDisable(uint32_t ui32Port, uint8_t ui8Pins);
extern void GPIOADCTriggerEnable(uint32_t ui32Port, uint8_t ui8Pins);
extern void GPIOADCTriggerDisable(uint32_t ui32Port, uint8_t ui8Pins);

//*****************************************************************************
//
// Mark the end of the C bindings section for C++ compilers.
//
//*****************************************************************************
#ifdef __cplusplus
}
#endif

#endif //  __GPIO_H__
