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@0:0a841b89d614, 2010-10-11 (annotated)
- Committer:
- AjK
- Date:
- Mon Oct 11 10:34:55 2010 +0000
- Revision:
- 0:0a841b89d614
Totally Alpha quality as this project isn\t completed. Just publishing it as it answers many questions asked in the forums
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
AjK | 0:0a841b89d614 | 1 | /**************************************************************************** |
AjK | 0:0a841b89d614 | 2 | * Copyright 2010 Andy Kirkham, Stellar Technologies Ltd |
AjK | 0:0a841b89d614 | 3 | * |
AjK | 0:0a841b89d614 | 4 | * This file is part of the Satellite Observers Workbench (SOWB). |
AjK | 0:0a841b89d614 | 5 | * |
AjK | 0:0a841b89d614 | 6 | * SOWB is free software: you can redistribute it and/or modify |
AjK | 0:0a841b89d614 | 7 | * it under the terms of the GNU General Public License as published by |
AjK | 0:0a841b89d614 | 8 | * the Free Software Foundation, either version 3 of the License, or |
AjK | 0:0a841b89d614 | 9 | * (at your option) any later version. |
AjK | 0:0a841b89d614 | 10 | * |
AjK | 0:0a841b89d614 | 11 | * SOWB is distributed in the hope that it will be useful, |
AjK | 0:0a841b89d614 | 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
AjK | 0:0a841b89d614 | 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
AjK | 0:0a841b89d614 | 14 | * GNU General Public License for more details. |
AjK | 0:0a841b89d614 | 15 | * |
AjK | 0:0a841b89d614 | 16 | * You should have received a copy of the GNU General Public License |
AjK | 0:0a841b89d614 | 17 | * along with SOWB. If not, see <http://www.gnu.org/licenses/>. |
AjK | 0:0a841b89d614 | 18 | * |
AjK | 0:0a841b89d614 | 19 | * $Id: main.cpp 5 2010-07-12 20:51:11Z ajk $ |
AjK | 0:0a841b89d614 | 20 | * |
AjK | 0:0a841b89d614 | 21 | ***************************************************************************/ |
AjK | 0:0a841b89d614 | 22 | |
AjK | 0:0a841b89d614 | 23 | #include "sowb.h" |
AjK | 0:0a841b89d614 | 24 | #include "debug.h" |
AjK | 0:0a841b89d614 | 25 | #include "gpioirq.h" |
AjK | 0:0a841b89d614 | 26 | |
AjK | 0:0a841b89d614 | 27 | /* Declare the external interrupt callback functions. */ |
AjK | 0:0a841b89d614 | 28 | extern void MAX7456_vsync_rise(void); |
AjK | 0:0a841b89d614 | 29 | extern void MAX7456_vsync_fall(void); |
AjK | 0:0a841b89d614 | 30 | //extern void max7456_los_rise(void); |
AjK | 0:0a841b89d614 | 31 | //extern void max7456_los_fall(void); |
AjK | 0:0a841b89d614 | 32 | extern void gps_pps_rise(void); |
AjK | 0:0a841b89d614 | 33 | extern void gps_pps_fall(void); |
AjK | 0:0a841b89d614 | 34 | |
AjK | 0:0a841b89d614 | 35 | /** EINT3_IRQHandler |
AjK | 0:0a841b89d614 | 36 | */ |
AjK | 0:0a841b89d614 | 37 | extern "C" void GPIOIRQ_IRQHandler (void) { |
AjK | 0:0a841b89d614 | 38 | |
AjK | 0:0a841b89d614 | 39 | /* Test for IRQ on Port0. */ |
AjK | 0:0a841b89d614 | 40 | if (LPC_GPIOINT->IntStatus & 0x1) { |
AjK | 0:0a841b89d614 | 41 | |
AjK | 0:0a841b89d614 | 42 | /* GPS PPS is connected to MBED P29 (Port0.5) */ |
AjK | 0:0a841b89d614 | 43 | //if (LPC_GPIOINT->IO0IntStatR & (1 << 5)) gps_pps_rise(); |
AjK | 0:0a841b89d614 | 44 | |
AjK | 0:0a841b89d614 | 45 | /* GPS PPS is connected to MBED P29 (Port0.5) */ |
AjK | 0:0a841b89d614 | 46 | if (LPC_GPIOINT->IO0IntStatF & (1 << 5)) gps_pps_fall(); |
AjK | 0:0a841b89d614 | 47 | |
AjK | 0:0a841b89d614 | 48 | /* MAX7456 Vertical Sync is connected to MBED P15 (Port0.23) */ |
AjK | 0:0a841b89d614 | 49 | if (LPC_GPIOINT->IO0IntStatF & (1 << 23)) MAX7456_vsync_fall(); |
AjK | 0:0a841b89d614 | 50 | |
AjK | 0:0a841b89d614 | 51 | /* MAX7456 LOS is connected to P17 (Port0.25) */ |
AjK | 0:0a841b89d614 | 52 | //if (LPC_GPIOINT->IO0IntStatR & (1 << 25)) max7456_los_rise(); |
AjK | 0:0a841b89d614 | 53 | |
AjK | 0:0a841b89d614 | 54 | LPC_GPIOINT->IO0IntClr = (LPC_GPIOINT->IO0IntStatR | LPC_GPIOINT->IO0IntStatF); |
AjK | 0:0a841b89d614 | 55 | } |
AjK | 0:0a841b89d614 | 56 | |
AjK | 0:0a841b89d614 | 57 | /* Test for IRQ on Port2. */ |
AjK | 0:0a841b89d614 | 58 | if (LPC_GPIOINT->IntStatus & 0x4) { |
AjK | 0:0a841b89d614 | 59 | |
AjK | 0:0a841b89d614 | 60 | LPC_GPIOINT->IO2IntClr = (LPC_GPIOINT->IO2IntStatR | LPC_GPIOINT->IO2IntStatF); |
AjK | 0:0a841b89d614 | 61 | } |
AjK | 0:0a841b89d614 | 62 | } |
AjK | 0:0a841b89d614 | 63 | |
AjK | 0:0a841b89d614 | 64 | /** gpioirq_init |
AjK | 0:0a841b89d614 | 65 | */ |
AjK | 0:0a841b89d614 | 66 | void gpioirq_init(void) { |
AjK | 0:0a841b89d614 | 67 | |
AjK | 0:0a841b89d614 | 68 | DEBUG_INIT_START; |
AjK | 0:0a841b89d614 | 69 | |
AjK | 0:0a841b89d614 | 70 | /* Enable the interrupts for connected signals. |
AjK | 0:0a841b89d614 | 71 | For bit definitions see the ISR function above. */ |
AjK | 0:0a841b89d614 | 72 | LPC_GPIOINT->IO0IntEnR |= ( (1UL << 5) | (1UL << 25) | (1UL << 23) ); |
AjK | 0:0a841b89d614 | 73 | LPC_GPIOINT->IO0IntEnF |= ( (1UL << 5) | (1UL << 25) | (1UL << 23) ); |
AjK | 0:0a841b89d614 | 74 | //LPC_GPIOINT->IO2IntEnR |= ( (1UL << 5) ); |
AjK | 0:0a841b89d614 | 75 | //LPC_GPIOINT->IO2IntEnF |= ( (1UL << 5) ); |
AjK | 0:0a841b89d614 | 76 | |
AjK | 0:0a841b89d614 | 77 | NVIC_SetVector(EINT3_IRQn, (uint32_t)GPIOIRQ_IRQHandler); |
AjK | 0:0a841b89d614 | 78 | NVIC_EnableIRQ(EINT3_IRQn); |
AjK | 0:0a841b89d614 | 79 | |
AjK | 0:0a841b89d614 | 80 | DEBUG_INIT_END; |
AjK | 0:0a841b89d614 | 81 | } |
AjK | 0:0a841b89d614 | 82 | |
AjK | 0:0a841b89d614 | 83 | void gpioirq_process(void) { |
AjK | 0:0a841b89d614 | 84 | /* Does nothing, no periodic house keeping required. */ |
AjK | 0:0a841b89d614 | 85 | } |
AjK | 0:0a841b89d614 | 86 | |
AjK | 0:0a841b89d614 | 87 | |
AjK | 0:0a841b89d614 | 88 |