Satellite Observers Workbench. NOT yet complete, just published for forum posters to \"cherry pick\" pieces of code as requiered as an example.
gpioirq/gpioirq.c
- Committer:
- AjK
- Date:
- 2010-10-11
- Revision:
- 0:0a841b89d614
File content as of revision 0:0a841b89d614:
/**************************************************************************** * Copyright 2010 Andy Kirkham, Stellar Technologies Ltd * * This file is part of the Satellite Observers Workbench (SOWB). * * SOWB is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * SOWB 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with SOWB. If not, see <http://www.gnu.org/licenses/>. * * $Id: main.cpp 5 2010-07-12 20:51:11Z ajk $ * ***************************************************************************/ #include "sowb.h" #include "debug.h" #include "gpioirq.h" /* Declare the external interrupt callback functions. */ extern void MAX7456_vsync_rise(void); extern void MAX7456_vsync_fall(void); //extern void max7456_los_rise(void); //extern void max7456_los_fall(void); extern void gps_pps_rise(void); extern void gps_pps_fall(void); /** EINT3_IRQHandler */ extern "C" void GPIOIRQ_IRQHandler (void) { /* Test for IRQ on Port0. */ if (LPC_GPIOINT->IntStatus & 0x1) { /* GPS PPS is connected to MBED P29 (Port0.5) */ //if (LPC_GPIOINT->IO0IntStatR & (1 << 5)) gps_pps_rise(); /* GPS PPS is connected to MBED P29 (Port0.5) */ if (LPC_GPIOINT->IO0IntStatF & (1 << 5)) gps_pps_fall(); /* MAX7456 Vertical Sync is connected to MBED P15 (Port0.23) */ if (LPC_GPIOINT->IO0IntStatF & (1 << 23)) MAX7456_vsync_fall(); /* MAX7456 LOS is connected to P17 (Port0.25) */ //if (LPC_GPIOINT->IO0IntStatR & (1 << 25)) max7456_los_rise(); LPC_GPIOINT->IO0IntClr = (LPC_GPIOINT->IO0IntStatR | LPC_GPIOINT->IO0IntStatF); } /* Test for IRQ on Port2. */ if (LPC_GPIOINT->IntStatus & 0x4) { LPC_GPIOINT->IO2IntClr = (LPC_GPIOINT->IO2IntStatR | LPC_GPIOINT->IO2IntStatF); } } /** gpioirq_init */ void gpioirq_init(void) { DEBUG_INIT_START; /* Enable the interrupts for connected signals. For bit definitions see the ISR function above. */ LPC_GPIOINT->IO0IntEnR |= ( (1UL << 5) | (1UL << 25) | (1UL << 23) ); LPC_GPIOINT->IO0IntEnF |= ( (1UL << 5) | (1UL << 25) | (1UL << 23) ); //LPC_GPIOINT->IO2IntEnR |= ( (1UL << 5) ); //LPC_GPIOINT->IO2IntEnF |= ( (1UL << 5) ); NVIC_SetVector(EINT3_IRQn, (uint32_t)GPIOIRQ_IRQHandler); NVIC_EnableIRQ(EINT3_IRQn); DEBUG_INIT_END; } void gpioirq_process(void) { /* Does nothing, no periodic house keeping required. */ }