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‎09-ucos-sem.pptx

1.06 MB
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‎600-uCOS-III-UsersGuide-004 (copy).pdf

3.86 MB
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‎Examples/POSIX/GNU/OS3/app.c

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/*
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*********************************************************************************************************
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* EXAMPLE CODE
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*
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* (c) Copyright 2003-2013; Micrium, Inc.; Weston, FL
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*
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* All rights reserved. Protected by international copyright laws.
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* Knowledge of the source code may NOT be used to develop a similar product.
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* Please help us continue to provide the Embedded community with the finest
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* software available. Your honesty is greatly appreciated.
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*********************************************************************************************************
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*/
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/*
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*********************************************************************************************************
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*
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* EXAMPLE CODE
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*
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* uC/OS-III on POSIX
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*
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*
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* Filename : app.c
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* Version : V1.00
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* Programmer(s) : DC
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* SB
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*********************************************************************************************************
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*/
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/*
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*********************************************************************************************************
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* INCLUDE FILES
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*********************************************************************************************************
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*/
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#include <app_cfg.h>
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#include <os.h>
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#include <stdio.h>
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#include <lib_mem.h>
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#include <lib_math.h>
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/*
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*********************************************************************************************************
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* LOCAL DEFINES
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*********************************************************************************************************
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*/
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/*
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*********************************************************************************************************
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* LOCAL GLOBAL VARIABLES
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*********************************************************************************************************
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*/
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static OS_TCB App_TaskStartTCB;
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static OS_TCB App_ProducerTCB;
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static OS_TCB App_ConsumerTCB;
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static OS_TCB App_Consumer2TCB;
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static CPU_STK App_TaskStartStk[APP_CFG_TASK_START_STK_SIZE];
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static CPU_STK AppProducer_Stk[128];
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static CPU_STK AppConsumer_Stk[128];
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static CPU_STK AppConsumer2_Stk[128];
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OS_SEM sem_full; OS_SEM sem_empty;
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/*
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*********************************************************************************************************
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* LOCAL FUNCTION PROTOTYPES
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*********************************************************************************************************
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*/
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static void App_TaskStart (void *p_arg);
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static void producer(void * p_arg);
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static void consumer(void * p_arg);
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static void consumer2(void * p_arg);
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/*
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*********************************************************************************************************
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* main()
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*
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* Description : This is the standard entry point for C code. It is assumed that your code will call
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* main() once you have performed all necessary initialization.
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*
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* Argument(s) : none.
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*
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* Return(s) : none.
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*
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* Caller(s) : This the main standard entry point.
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*
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* Note(s) : none.
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*********************************************************************************************************
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*/
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int main (void)
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{
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OS_ERR err;
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OSInit(&err); /* Initialize "uC/OS-III, The Real-Time Kernel" */
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OSTaskCreate((OS_TCB *)&App_TaskStartTCB, /* Create the start task */
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(CPU_CHAR *)"App Task Start",
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(OS_TASK_PTR ) App_TaskStart,
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(void *) 0,
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(OS_PRIO ) APP_CFG_TASK_START_PRIO,
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(CPU_STK *)&App_TaskStartStk[0],
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(CPU_STK )(APP_CFG_TASK_START_STK_SIZE / 10u),
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(CPU_STK_SIZE) APP_CFG_TASK_START_STK_SIZE,
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(OS_MSG_QTY ) 0,
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(OS_TICK ) 0,
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(void *) 0,
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(OS_OPT )(OS_OPT_TASK_STK_CHK | OS_OPT_TASK_STK_CLR),
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(OS_ERR *)&err);
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OSStart(&err); /* Start multitasking (i.e. give control to uC/OS-III). */
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while(DEF_ON){ /* Should Never Get Here */
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printf("永远不出现");
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};
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}
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void producer (void *p_arg)
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{
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OS_ERR err;
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CPU_TS ts;
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while (DEF_ON) {
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OSSemPend(&sem_empty, 0,OS_OPT_PEND_BLOCKING,&ts,&err);
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OSSemPost(&sem_full, OS_OPT_POST_1 ,&err);
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printf("生产者：食物数量：%d\t", sem_full.Ctr);
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OSTimeDlyHMSM(0u, 0u, 1u, 0u,
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OS_OPT_TIME_HMSM_STRICT,
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&err);
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/* Check ’err” */
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}
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}
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void consumer (void *p_arg)
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{
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OS_ERR err;
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CPU_TS ts;
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while (DEF_ON) {
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OSSemPend(&sem_full, 0,OS_OPT_PEND_BLOCKING,&ts,&err);
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OSSemPost(&sem_empty, OS_OPT_POST_1 ,&err);
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printf("消费者：食物数量：%d\t", sem_full.Ctr);
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OSTimeDlyHMSM(0u, 0u, 2u, 0u,
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OS_OPT_TIME_HMSM_STRICT,
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&err);
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/* Check ’err” */
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}
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}
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void consumer2 (void *p_arg)
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{
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OS_ERR err;
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CPU_TS ts;
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while (DEF_ON) {
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OSSemPend(&sem_full, 0,OS_OPT_PEND_BLOCKING,&ts,&err);
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OSSemPost(&sem_empty, OS_OPT_POST_1 ,&err);
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printf("消费者2：食物数量：%d\t", sem_full.Ctr );
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OSTimeDlyHMSM(0u, 0u, 3u, 0u,
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OS_OPT_TIME_HMSM_STRICT,
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&err);
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/* Check ’err” */
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}
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}
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/*
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*********************************************************************************************************
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* App_TaskStart()
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*
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* Description : This is an example of a startup task. As mentioned in the book's text, you MUST
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* initialize the ticker only once multitasking has started.
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*
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* Argument(s) : p_arg is the argument passed to 'App_TaskStart()' by 'OSTaskCreate()'.
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*
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* Return(s) : none.
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*
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* Caller(s) : This is a task.
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*
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* Notes : (1) The first line of code is used to prevent a compiler warning because 'p_arg' is not
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* used. The compiler should not generate any code for this statement.
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*********************************************************************************************************
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*/
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static void App_TaskStart (void *p_arg)
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{
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OS_ERR os_err;
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(void)p_arg; /* See Note #1 */
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CPU_Init();
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Mem_Init(); /* Initialize the Memory Management Module */
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Math_Init(); /* Initialize the Mathematical Module */
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OS_CPU_SysTickInit();
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OSSemCreate(&sem_full, "full", 0, &os_err);
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OSSemCreate(&sem_empty, "empty", 10, &os_err);
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OSTaskCreate((OS_TCB *)&App_ProducerTCB, /* Create the start task */
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(CPU_CHAR *)"Producer Start",
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(OS_TASK_PTR ) producer,
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(void *) 0,
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(OS_PRIO ) 13,
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(CPU_STK *)&AppProducer_Stk[0],
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(CPU_STK )0,
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(CPU_STK_SIZE) 128,
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(OS_MSG_QTY ) 0,
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(OS_TICK ) 0,
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(void *) 0,
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(OS_OPT )(OS_OPT_TASK_STK_CHK | OS_OPT_TASK_STK_CLR),
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(OS_ERR *)&os_err);
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OSTaskCreate((OS_TCB *)&App_ConsumerTCB, /* Create the start task */
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(CPU_CHAR *)"Consumer Start",
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(OS_TASK_PTR ) consumer,
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(void *) 0,
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(OS_PRIO ) 15,
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(CPU_STK *)&AppConsumer_Stk[0],
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(CPU_STK )0,
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(CPU_STK_SIZE) 128,
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(OS_MSG_QTY ) 0,
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(OS_TICK ) 0,
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(void *) 0,
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(OS_OPT )(OS_OPT_TASK_STK_CHK | OS_OPT_TASK_STK_CLR),
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(OS_ERR *)&os_err);
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OSTaskCreate((OS_TCB *)&App_Consumer2TCB, /* Create the start task */
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(CPU_CHAR *)"Consumer2 Start",
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(OS_TASK_PTR ) consumer2,
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(void *) 0,
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(OS_PRIO ) 16,
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(CPU_STK *)&AppConsumer2_Stk[0],
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(CPU_STK )0,
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(CPU_STK_SIZE) 128,
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(OS_MSG_QTY ) 0,
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(OS_TICK ) 0,
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(void *) 0,
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(OS_OPT )(OS_OPT_TASK_STK_CHK | OS_OPT_TASK_STK_CLR),
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(OS_ERR *)&os_err);
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while (DEF_TRUE) { /* Task body, always written as an infinite loop. */
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printf("\nuCOS-III is running.\n");
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OSTimeDlyHMSM(0u, 0u, 1u, 0u,
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OS_OPT_TIME_HMSM_STRICT,
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&os_err);
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}
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}
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‎Examples/POSIX/GNU/OS3/app_cfg.h

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/*
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*********************************************************************************************************
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* EXAMPLE CODE
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*
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* (c) Copyright 2009-2013; Micrium, Inc.; Weston, FL
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*
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* All rights reserved. Protected by international copyright laws.
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*
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* Please feel free to use any application code labeled as 'EXAMPLE CODE' in
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* your application products. Example code may be used as is, in whole or in
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* part, or may be used as a reference only.
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*
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* Please help us continue to provide the Embedded community with the finest
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* software available. Your honesty is greatly appreciated.
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*
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* You can contact us at www.micrium.com.
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*********************************************************************************************************
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*/
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/*
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*********************************************************************************************************
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*
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* APPLICATION CONFIGURATION
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*
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* uC/OS-III on POSIX
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*
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* Filename : app.c
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* Version : V1.00
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* Programmer(s) : EJ
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*
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*********************************************************************************************************
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*/
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/*
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*********************************************************************************************************
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* MODULE
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*********************************************************************************************************
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*/
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#ifndef APP_CFG_MODULE_PRESENT
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#define APP_CFG_MODULE_PRESENT
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/*
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*********************************************************************************************************
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* INCLUDE
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*********************************************************************************************************
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*/
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/*
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*********************************************************************************************************
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* TASK PRIORITIES
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*********************************************************************************************************
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*/
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#define APP_CFG_TASK_START_PRIO 33
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#define OS_TASK_TMR_PRIO (OS_LOWEST_PRIO - 2)
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/*
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*********************************************************************************************************
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* TASK STACK SIZES
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* Size of the task stacks (# of OS_STK entries)
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*********************************************************************************************************
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*/
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#define APP_CFG_TASK_START_STK_SIZE 4096
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/*
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*********************************************************************************************************
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* uC/TCP-IP v2.10
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*********************************************************************************************************
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*/
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/*
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*********************************************************************************************************
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* TRACE / DEBUG CONFIGURATION
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*********************************************************************************************************
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*/
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#ifndef TRACE_LEVEL_OFF
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#define TRACE_LEVEL_OFF 0
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#endif
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#ifndef TRACE_LEVEL_INFO
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#define TRACE_LEVEL_INFO 1
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#endif
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#ifndef TRACE_LEVEL_DEBUG
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#define TRACE_LEVEL_DEBUG 2
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#endif
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#define APP_TRACE_LEVEL TRACE_LEVEL_OFF
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#define APP_TRACE printf
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#define APP_TRACE_INFO(x) ((APP_TRACE_LEVEL >= TRACE_LEVEL_INFO) ? (void)(APP_TRACE x) : (void)0)
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#define APP_TRACE_DBG(x) ((APP_TRACE_LEVEL >= TRACE_LEVEL_DEBUG) ? (void)(APP_TRACE x) : (void)0)
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#define APP_TRACE_DEBUG(x) APP_TRACE_DBG(x)
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#endif

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