| //***************************************************************************** |
| // |
| // gpio.h |
| // |
| // Defines and Macros for GPIO API. |
| // |
| // Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/ |
| // |
| // |
| // 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. |
| // |
| //***************************************************************************** |
| |
| #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 ucPins 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 ulPinIO 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 |
| |
| //***************************************************************************** |
| // |
| // Values that can be passed to GPIOIntTypeSet as the ulIntType 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 |
| |
| //***************************************************************************** |
| // |
| // Values that can be passed to GPIOIntEnable() and GPIOIntDisable() functions |
| // in the ulIntFlags parameter. |
| // |
| //***************************************************************************** |
| #define GPIO_INT_DMA 0x00000100 |
| #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(unsigned long ulPort, unsigned char ucPins, |
| unsigned long ulPinIO); |
| extern unsigned long GPIODirModeGet(unsigned long ulPort, unsigned char ucPin); |
| extern void GPIOIntTypeSet(unsigned long ulPort, unsigned char ucPins, |
| unsigned long ulIntType); |
| extern void GPIODMATriggerEnable(unsigned long ulPort); |
| extern void GPIODMATriggerDisable(unsigned long ulPort); |
| extern unsigned long GPIOIntTypeGet(unsigned long ulPort, unsigned char ucPin); |
| extern void GPIOIntEnable(unsigned long ulPort, unsigned long ulIntFlags); |
| extern void GPIOIntDisable(unsigned long ulPort, unsigned long ulIntFlags); |
| extern long GPIOIntStatus(unsigned long ulPort, tBoolean bMasked); |
| extern void GPIOIntClear(unsigned long ulPort, unsigned long ulIntFlags); |
| extern void GPIOIntRegister(unsigned long ulPort, |
| void (*pfnIntHandler)(void)); |
| extern void GPIOIntUnregister(unsigned long ulPort); |
| extern long GPIOPinRead(unsigned long ulPort, unsigned char ucPins); |
| extern void GPIOPinWrite(unsigned long ulPort, unsigned char ucPins, |
| unsigned char ucVal); |
| |
| //***************************************************************************** |
| // |
| // Mark the end of the C bindings section for C++ compilers. |
| // |
| //***************************************************************************** |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif // __GPIO_H__ |