2 * Copyright © 2009 Keith Packard <keithp@keithp.com>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 2 of the License
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
25 #define DATA_TO_XDATA(a) ((void __xdata *) ((uint8_t) (a) | 0xff00))
27 #define AO_STACK_START 0x21
28 #define AO_STACK_END 0xfe
29 #define AO_STACK_SIZE (AO_STACK_END - AO_STACK_START + 1)
33 uint8_t stack[AO_STACK_SIZE];
37 #define AO_NUM_TASKS 10
39 #define AO_ERROR_NO_TASK 1
41 #define ao_interrupt_disable() (EA = 0)
42 #define ao_interrupt_enable() (EA = 1)
45 int ao_sleep(__xdata void *wchan);
46 int ao_wakeup(__xdata void *wchan);
47 void ao_add_task(__xdata struct ao_task * task, void (*start)(void));
48 void ao_start_scheduler(void);
49 void ao_yield(void) _naked;
50 void ao_panic(uint8_t reason);
54 volatile __data uint16_t ao_time;
56 void ao_timer_isr(void) interrupt 9;
57 void ao_timer_init(void);
58 uint16_t ao_time_atomic(void);
59 void ao_delay(uint16_t ticks);