crashtest-r0ket/firmware/core/gpio/gpio.h

112 lines
4.2 KiB
C

/**************************************************************************/
/*!
@file gpio.h
@author K. Townsend (microBuilder.eu)
@date 22 March 2010
@version 0.10
@section LICENSE
Software License Agreement (BSD License)
Copyright (c) 2010, microBuilder SARL
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. 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.
3. Neither the name of the copyright holders 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 ''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 HOLDER 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_
#include "projectconfig.h"
/**************************************************************************/
/*!
Indicates whether the interrupt should be configured as edge or
level sensitive.
*/
/**************************************************************************/
typedef enum gpioInterruptSense_e
{
gpioInterruptSense_Edge = 0,
gpioInterruptSense_Level
}
gpioInterruptSense_t;
/**************************************************************************/
/*!
Indicates whether one edge or both edges trigger an interrupt.
Setting this to Double will cause both edges to trigger an interrupt.
*/
/**************************************************************************/
typedef enum gpioInterruptEdge_e
{
gpioInterruptEdge_Single = 0,
gpioInterruptEdge_Double
}
gpioInterruptEdge_t;
/**************************************************************************/
/*!
Indicates whether the interrupt should be triggered in the rising
or falling edge. ActiveHigh means that a HIGH level on the pin will
trigger an interrupt, ActiveLow means that a LOW level on the pin
will trigger an interrupt.
*/
/**************************************************************************/
typedef enum gpioInterruptEvent_e
{
gpioInterruptEvent_ActiveHigh = 0,
gpioInterruptEvent_ActiveLow
}
gpioInterruptEvent_t;
typedef enum gpioDirection_e
{
gpioDirection_Input = 0,
gpioDirection_Output
}
gpioDirection_t;
typedef enum gpioPullupMode_e
{
gpioPullupMode_Inactive = IOCON_COMMON_MODE_INACTIVE,
gpioPullupMode_PullDown = IOCON_COMMON_MODE_PULLDOWN,
gpioPullupMode_PullUp = IOCON_COMMON_MODE_PULLUP,
gpioPullupMode_Repeater = IOCON_COMMON_MODE_REPEATER
}
gpioPullupMode_t;
void gpioInit (void);
void gpioSetDir (uint32_t portNum, uint32_t bitPos, gpioDirection_t dir);
uint32_t gpioGetValue (uint32_t portNum, uint32_t bitPos);
void gpioSetValue (uint32_t portNum, uint32_t bitPos, uint32_t bitVal);
void gpioSetInterrupt (uint32_t portNum, uint32_t bitPos, gpioInterruptSense_t sense, gpioInterruptEdge_t edge, gpioInterruptEvent_t event);
void gpioIntEnable (uint32_t portNum, uint32_t bitPos);
void gpioIntDisable (uint32_t portNum, uint32_t bitPos);
uint32_t gpioIntStatus (uint32_t portNum, uint32_t bitPos);
void gpioIntClear (uint32_t portNum, uint32_t bitPos);
void gpioSetPullup (volatile uint32_t *ioconRegister, gpioPullupMode_t mode);
#endif