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77 lines
1.7 KiB
C
77 lines
1.7 KiB
C
/*
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task - include file
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Copyright (C) 2011 Pavel Semerad
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _TASK_INCLUDED
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#define _TASK_INCLUDED
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#include "stm8.h"
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// Task Control Block
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struct TCB_s {
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u8 status;
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struct TCB_s *link;
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u8 *hwstack;
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};
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typedef struct TCB_s TCB;
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extern TCB *ptid;
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// TASK - create TCB, stack
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#define TASK(name, stack_size) \
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TCB name; \
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@near u8 name ## _stack[stack_size]; \
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const u16 name ## _stack_size = stack_size
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#define E_TASK(name) \
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extern TCB name
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// sleep, awake
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#define _ASLEEP 0
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#define _AWAKE 0xff
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#define sleep(task) task.status = _ASLEEP
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#define awake(task) task.status = _AWAKE
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// activate
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#define activate(task, function) \
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_do_activate(&task, task ## _stack, task ## _stack_size, function);
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extern void _do_activate(TCB *task, u8 *stack, u16 stack_size,
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void (*function)(void));
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// build
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#define build(task) \
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_do_build(&task)
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extern void _do_build(TCB *task);
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// pause, stop
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extern void pause(void);
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extern void stop(void);
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// OPER task
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E_TASK(OPER);
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#endif
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