Scheduler.h

00001 /*
00002  * Copyright (C) 2012-2013 audin
00003  * This program is licensed under the Apache License, Version 2.0.
00004  * 2013/08: Modify for mbed for LPC1114FN28
00005  * Modified 2012/11: v02:
00006  *      Added external definition of stack size and task number. 
00007  * Modified 2012/10: v01:
00008  *      For working on Cortex-M0 and M3.
00009  *      Defined static tcb option for the cpu that has quite a less SRAM < 8kbyte.
00010  *
00011  * Original file is arduino-1.5\hardware\arduino\sam\libraries\Scheduler
00012  */
00013 
00014 /*
00015  * Copyright (C) 2012 The Android Open Source Project
00016  *
00017  * Licensed under the Apache License, Version 2.0 (the "License");
00018  * you may not use this file except in compliance with the License.
00019  * You may obtain a copy of the License at
00020  *
00021  *      http://www.apache.org/licenses/LICENSE-2.0
00022  *
00023  * Unless required by applicable law or agreed to in writing, software
00024  * distributed under the License is distributed on an "AS IS" BASIS,
00025  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00026  * See the License for the specific language governing permissions and
00027  * limitations under the License.
00028  */
00029 
00030 #ifndef _SCHEDULDER_H_
00031 #define _SCHEDULDER_H_
00032 
00033 /* 
00034  * If you explicitly specify stack size, activate below,
00035  * or used "Default settings"
00036  */
00037 //#define SCHEDULER_TASK_NUM_MAX 4 
00038 //#define SCHEDULER_TASK_STACK_SIZE_EACH 200
00039 
00040 /* 
00041  * Otherwise you can add compile option CFLAGS like this,  
00042   -DSCHEDULER_TASK_NUM_MAX=4
00043   -DSCHEDULER_TASK_STACK_SIZE_EACH=200
00044 */
00045 
00046 /* Default settings */
00047 /******************************************************************************************/
00048 #ifndef SCHEDULER_TASK_NUM_MAX
00049 #define COOP_TASK_NUM_MAX 4 /* Define max task number( include main loop ) */
00050 #else
00051 #define COOP_TASK_NUM_MAX (SCHEDULER_TASK_NUM_MAX)
00052 #endif
00053 
00054 #ifndef SCHEDULER_TASK_STACK_SIZE_EACH
00055 #define MIN_STACK_SIZE (200) /* Minimum stack size per task, exclude main loop */
00056 #else
00057 #define MIN_STACK_SIZE (SCHEDULER_TASK_STACK_SIZE_EACH)
00058 #endif
00059 /* Thanks Ms.HI */
00060 /******************************************************************************************/
00061 
00062 #include <stdint.h>
00063 #ifdef __cplusplus
00064 extern "C" {
00065 #endif
00066     typedef void (*SchedulerTask)(void);
00067     typedef void (*SchedulerParametricTask)(void *);
00068 
00069     void scheduler_init( void );
00070     void scheduler_startLoop( SchedulerTask task );
00071     void scheduler_start( SchedulerTask task );
00072 #ifdef MBED_H
00073     void taskWait(uint32_t ms);
00074 #else
00075     void wait(uint32_t ms);
00076 #endif
00077     void yield();
00078 #ifdef __cplusplus
00079 }
00080 #endif
00081 
00082 
00083 #if __cplusplus
00084 class SchedulerClass {
00085 public:
00086     SchedulerClass();
00087     static void startLoop(SchedulerTask task, uint32_t stackSize = MIN_STACK_SIZE);
00088     static void start(SchedulerTask task, uint32_t stackSize = MIN_STACK_SIZE);
00089     static void start(SchedulerParametricTask task, void *data, uint32_t stackSize = MIN_STACK_SIZE);
00090 
00091 #ifdef MBED_H
00092     static void taskWait(uint32_t ms);
00093 #else
00094     static void wait(uint32_t ms) { ::wait(ms); };
00095 #endif
00096     static void yield() { ::yield(); };
00097 };
00098 
00099 extern SchedulerClass Scheduler;
00100 
00101 #endif
00102 
00103 #endif  /* _SCHEDULDER_H_ */
00104