230 lines
7.5 KiB
C
230 lines
7.5 KiB
C
//*****************************************************************************
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// button_if.c
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//
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// CC3200 Launchpad button interface APIs
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//
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// Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/
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//
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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//
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// Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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//
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// Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the
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// distribution.
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//
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// Neither the name of Texas Instruments Incorporated nor the names of
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// its contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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//*****************************************************************************
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#include <stdlib.h>
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#include "hw_types.h"
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#include "hw_ints.h"
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#include "rom.h"
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#include "rom_map.h"
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#include "gpio.h"
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#include "interrupt.h"
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#include "pin.h"
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#include "hw_memmap.h"
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#ifdef SL_PLATFORM_MULTI_THREADED /* If OS-based application */
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#include "osi.h"
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#endif
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#include "button_if.h"
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P_INT_HANDLER g_S2InterruptHdl;
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P_INT_HANDLER g_S3InterruptHdl;
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//*****************************************************************************
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//
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//! GPIO Interrupt Handler for S3 button
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//!
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//! \param None
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//!
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//! \return None
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//
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//*****************************************************************************
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void GPIOs3IntHandler()
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{
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unsigned long ulPinState = GPIOIntStatus(GPIOA1_BASE,1);
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if(ulPinState & GPIO_PIN_5)
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{
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Button_IF_DisableInterrupt(SW3);
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g_S3InterruptHdl();
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}
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}
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//*****************************************************************************
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//
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//! GPIO Interrupt Handler for S2 button
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//!
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//! \param None
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//!
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//! \return None
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//
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//*****************************************************************************
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void GPIOs2IntHandler()
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{
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unsigned long ulPinState = GPIOIntStatus(GPIOA2_BASE,1);
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if(ulPinState & GPIO_PIN_6)
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{
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Button_IF_DisableInterrupt(SW2);
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g_S2InterruptHdl();
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}
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}
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//*****************************************************************************
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//
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//! \brief Initialize Push Button GPIO
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//!
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//! \param[in] S2InterruptHdl GPIO Interrupt Handler for SW2 LP button
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//! \param[in] S3InterruptHdl GPIO Interrupt Handler for SW3 LP button
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//!
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//! \return none
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//!
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//! \brief Initializes Push Button Ports and Pins
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//
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//*****************************************************************************
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void Button_IF_Init(P_INT_HANDLER S2InterruptHdl,P_INT_HANDLER S3InterruptHdl )
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{
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if(S3InterruptHdl != NULL)
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{
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//
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// Set Interrupt Type for GPIO
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//
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MAP_GPIOIntTypeSet(GPIOA1_BASE,GPIO_PIN_5,GPIO_FALLING_EDGE);
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g_S3InterruptHdl = S3InterruptHdl;
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//
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// Register Interrupt handler
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//
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#if defined(USE_TIRTOS) || defined(USE_FREERTOS) || defined(SL_PLATFORM_MULTI_THREADED)
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// USE_TIRTOS: if app uses TI-RTOS (either networking/non-networking)
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// USE_FREERTOS: if app uses Free-RTOS (either networking/non-networking)
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// SL_PLATFORM_MULTI_THREADED: if app uses any OS + networking(simplelink)
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osi_InterruptRegister(INT_GPIOA1,(P_OSI_INTR_ENTRY)GPIOs3IntHandler, \
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INT_PRIORITY_LVL_1);
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#else
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MAP_IntPrioritySet(INT_GPIOA1, INT_PRIORITY_LVL_1);
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MAP_GPIOIntRegister(GPIOA1_BASE, GPIOs3IntHandler);
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#endif
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//
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// Enable Interrupt
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//
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MAP_GPIOIntClear(GPIOA1_BASE,GPIO_PIN_5);
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MAP_GPIOIntEnable(GPIOA1_BASE,GPIO_INT_PIN_5);
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}
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if(S2InterruptHdl != NULL)
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{
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//
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// Set Interrupt Type for GPIO
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//
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MAP_GPIOIntTypeSet(GPIOA2_BASE,GPIO_PIN_6,GPIO_FALLING_EDGE);
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g_S2InterruptHdl = S2InterruptHdl;
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//
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// Register Interrupt handler
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//
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#if defined(USE_TIRTOS) || defined(USE_FREERTOS) || defined(SL_PLATFORM_MULTI_THREADED)
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// USE_TIRTOS: if app uses TI-RTOS (either networking/non-networking)
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// USE_FREERTOS: if app uses Free-RTOS (either networking/non-networking)
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// SL_PLATFORM_MULTI_THREADED: if app uses any OS + networking(simplelink)
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osi_InterruptRegister(INT_GPIOA2,(P_OSI_INTR_ENTRY)GPIOs2IntHandler, \
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INT_PRIORITY_LVL_1);
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#else
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MAP_IntPrioritySet(INT_GPIOA2, INT_PRIORITY_LVL_1);
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MAP_GPIOIntRegister(GPIOA2_BASE, GPIOs2IntHandler);
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#endif
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//
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// Enable Interrupt
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//
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MAP_GPIOIntClear(GPIOA2_BASE,GPIO_PIN_6);
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MAP_GPIOIntEnable(GPIOA2_BASE,GPIO_INT_PIN_6);
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}
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}
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//*****************************************************************************
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//
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//! \brief Enables Push Button GPIO Interrupt
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//!
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//! \param[in] ucSwitch Push Button Swich Enum - SW2,SW3
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//!
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//! \return none
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//!
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//
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//*****************************************************************************
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void Button_IF_EnableInterrupt(unsigned char ucSwitch)
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{
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if(ucSwitch & SW2)
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{
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//Enable GPIO Interrupt
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MAP_GPIOIntClear(GPIOA2_BASE,GPIO_PIN_6);
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MAP_IntPendClear(INT_GPIOA2);
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MAP_IntEnable(INT_GPIOA2);
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MAP_GPIOIntEnable(GPIOA2_BASE,GPIO_PIN_6);
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}
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if(ucSwitch & SW3)
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{
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//Enable GPIO Interrupt
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MAP_GPIOIntClear(GPIOA1_BASE,GPIO_PIN_5);
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MAP_IntPendClear(INT_GPIOA1);
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MAP_IntEnable(INT_GPIOA1);
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MAP_GPIOIntEnable(GPIOA1_BASE,GPIO_PIN_5);
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}
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}
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//*****************************************************************************
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//
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//! \brief Disables Push Button GPIO Interrupt
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//!
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//! \param[in] ucSwitch Push Button Swich Enum - SW2,SW3
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//!
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//! \return none
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//!
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//
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//*****************************************************************************
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void Button_IF_DisableInterrupt(unsigned char ucSwitch)
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{
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if(ucSwitch & SW2)
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{
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//Clear and Disable GPIO Interrupt
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MAP_GPIOIntDisable(GPIOA2_BASE,GPIO_PIN_6);
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MAP_GPIOIntClear(GPIOA2_BASE,GPIO_PIN_6);
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MAP_IntDisable(INT_GPIOA2);
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}
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if(ucSwitch & SW3)
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{
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//Clear and Disable GPIO Interrupt
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MAP_GPIOIntDisable(GPIOA1_BASE,GPIO_PIN_5);
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MAP_GPIOIntClear(GPIOA1_BASE,GPIO_PIN_5);
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MAP_IntDisable(INT_GPIOA1);
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}
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}
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