/* $Id$ */ /* * Copyright (c) 2010 Dimitri Sokolyuk * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #ifndef __KERNEL_H #define __KERNEL_H #ifndef TASKS #warning "TASKS not set, fallback to default" #define TASKS 8 #endif #ifndef SEMAPHORES #warning "SEMAPHORES not set, fallback to default" #define SEMAPHORES 8 #endif #ifndef STACK #warning "STACK not set, fallback to default" #define STACK 64 #endif #ifndef F_CPU #warning "F_CPU not set, fallback to default" #define F_CPU 1000000 #endif #ifndef PRESCALE #warning "PRESCALE not set, fallback to default" #define PRESCALE 1 #endif #if (PRESCALE == 1) #define TIMER_FLAGS _BV(CS10) #elif (PRESCALE == 8) #define TIMER_FLAGS _BV(CS11) #elif (PRESCALE == 64) #define TIMER_FLAGS (_BV(CS11) | _BV(CS10)) #elif (PRESCALE == 256) #define TIMER_FLAGS _BV(CS12) #elif (PRESCALE == 1024) #define TIMER_FLAGS (_BV(CS12) | _BV(CS10)) #else #warning "invalid PRESCALE value" #endif #define SEC(T) ((uint32_t)(T) * (F_CPU / PRESCALE)) #define MSEC(T) ((uint32_t)(T) * ((F_CPU / 1000) / PRESCALE)) #define USEC(T) ((uint32_t)(T) * ((F_CPU / 1000000) / PRESCALE)) void init(int idlestack); void task(void (*fun)(void *), uint16_t stack, void *args); void semaphore(uint8_t semnbr, uint8_t initVal); void wait(uint8_t semnbr); void signal(uint8_t semnbr); void suspend(void); void update(uint32_t release, uint32_t deadline); enum { SOFT, HARD }; void sleep(uint8_t, uint32_t); uint32_t now(void); uint32_t release(void); uint32_t deadline(void); #endif