87 lines
2.2 KiB
C
87 lines
2.2 KiB
C
/*
|
|
ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
|
|
|
|
This file is part of ChibiOS/RT.
|
|
|
|
ChibiOS/RT 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.
|
|
|
|
ChibiOS/RT 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 this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <ch.h>
|
|
#include <serial.h>
|
|
|
|
#include "board.h"
|
|
|
|
CH_IRQ_HANDLER(TIMER0_COMP_vect) {
|
|
|
|
CH_IRQ_PROLOGUE();
|
|
|
|
chSysLockFromIsr();
|
|
chSysTimerHandlerI();
|
|
chSysUnlockFromIsr();
|
|
|
|
CH_IRQ_EPILOGUE();
|
|
}
|
|
|
|
/*
|
|
* Board initialization code.
|
|
*/
|
|
void hwinit(void) {
|
|
|
|
/*
|
|
* I/O ports setup.
|
|
*/
|
|
DDRA = VAL_DDRA;
|
|
PORTA = VAL_PORTA;
|
|
DDRB = VAL_DDRB;
|
|
PORTB = VAL_PORTB;
|
|
DDRC = VAL_DDRC;
|
|
PORTC = VAL_PORTC;
|
|
DDRD = VAL_DDRD;
|
|
PORTD = VAL_PORTD;
|
|
DDRE = VAL_DDRE;
|
|
PORTE = VAL_PORTE;
|
|
DDRF = VAL_DDRF;
|
|
PORTF = VAL_PORTF;
|
|
DDRG = VAL_DDRG;
|
|
PORTG = VAL_PORTG;
|
|
|
|
/*
|
|
* External interrupts setup, all disabled initially.
|
|
*/
|
|
EICRA = 0x00;
|
|
EICRB = 0x00;
|
|
EIMSK = 0x00;
|
|
|
|
/*
|
|
* Enables Idle mode for SLEEP instruction.
|
|
*/
|
|
MCUCR = (1 << SE);
|
|
|
|
/*
|
|
* Timer 0 setup.
|
|
*/
|
|
TCCR0 = (1 << WGM01) | (0 << WGM00) | // CTC mode.
|
|
(0 << COM01) | (0 << COM00) | // OC0A disabled (normal I/O).
|
|
(1 << CS02) | (0 << CS01) | (0 << CS00); // CLK/64 clock source.
|
|
OCR0 = F_CPU / 64 / CH_FREQUENCY - 1;
|
|
TCNT0 = 0; // Reset counter.
|
|
TIFR = (1 << OCF0); // Reset pending (if any).
|
|
TIMSK = (1 << OCIE0); // Interrupt on compare.
|
|
|
|
/*
|
|
* Other initializations.
|
|
*/
|
|
sdInit();
|
|
}
|