fx2/firmware/include/fx2ints.h

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2013-10-02 10:43:54 +02:00
// Copyright (C) 2010 Ubixum, Inc.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
/*! \file
* Define the standard fx2 interrupts. For int2 and int4 autovector
* interrupts see \ref autovector.h
*
* To enable an interrupt, simply define an interrupt handler function
* and use the appropriate ENABLE_* macro. Interrupt enable macros
* do not enable interrupts globally. Use EA=1 to enable interrupts.
*
* \code
* void main() {
* ENABLE_RESUME();
* EA=1;
* ...
* }
*
* void handle_resume() interrupt RESUME_ISR {
* CLEAR_RESUME();
* }
* \endcode
*
* */
/**
* \brief interrupt numbers for standard fx2 interrupts
**/
typedef enum {
IE0_ISR = 0, ///< External interrupt 0
TF0_ISR, ///< Timer 0 interrupt
IE1_ISR, ///< External interrupt 1
TF1_ISR, ///< Timer 1 interrupt
TI_0_ISR, ///< Serial port 0 transmit or receive interrupt
TF2_ISR, ///< Timer 2 interrupt
RESUME_ISR, ///< Resume interrupt
TI_1_ISR, ///< Serial port 1 transmit or receive interrupt
USBINT_ISR, ///< Usb Interrupt. An interrupt handler for this should only be used if not using auto vectored interrupts with int2
I2CINT_ISR, ///< I2C Bus interrupt
IE4_ISR, ///< External interrupt 4. An interrupt handler for this should only be used if not using auto vectored interrupts with int4
IE5_ISR, ///< External interrupt 5
IE6_ISR, ///< External interrupt 6
} FX2_ISR;
/**
* \brief Enable the timer 0 interrupt.
*
* There is not CLEAR_TIMER0 because the timer interrupt flag
* is automatically cleared when the isr is called.
**/
#define ENABLE_TIMER0() ET0=1
/**
* \brief Enable timer 1 interrupt
* There is no CLEAR_TIMER1 because the timer interrupt flag
* is automatically cleared when the isr is called.
**/
#define ENABLE_TIMER1() ET1=1
/**
* \brief Enable timer 2 interrupt
*
* This is the same interrupt whether timer 2 overflowed or
* for the external EXF2 flag.
**/
#define ENABLE_TIMER2() ET2=1
/**
* \brief Clear timer 2 interrupt
*
* Clears both the TF2 AND EXF2 flag
**/
#define CLEAR_TIMER2() TF2=0;EXF2=0;
/**
* \brief Enable the Resume Interrupt. Requires EA=1 separately.
**/
#define ENABLE_RESUME() ERESI = 1
/**
* \brief Clear the resume interrupt. Use within the resume
* interrupt handler.
**/
#define CLEAR_RESUME() RESI=0
#define ENABLE_INT4()
/**
* \brief
* Enable external interupt for int5#
**/
#define ENABLE_INT5() EIEX5=1
/**
* \brief
* Clear int5# interrupt
**/
#define CLEAR_INT5() EXIF &= ~0x80