嵌入式 事件標志組編程參考模板

1、2.2 題目組合2 程序設計題目-事件標志組編程 目標：設計三個任務，當時間到且獨立按健被按下過，讓LED閃耀一下。設LED任務為高優(yōu)先級任務，三個任務的處理流程如圖。下面是三個任務的處理流程。主任務：無條件掛起一個任務，之后建立兩個子任務（任務A與任務B），設置任務B為高優(yōu)先級任務。以兩組信號量（低位標志與次低位標志）組成之間標志組，完成程序設計。任務A： void Task_A(void *p_arg)INT8U err;while(1)OSTimeDly(100);OSFlagPost(LED_Flag,(OS_FLAGS)2,OS_FLAG_SET,&err);if(err !

2、= OS_NO_ERR)Uart_Printf("Task_A事件標志組失敗,錯誤碼%dn",err);elseUart_Printf("發(fā)送標志位rn");1 / 7任務Bvoid Task_B(void *p_arg)INT8U err;while(1) OSFlagPend(LED_Flag,(OS_FLAGS)3,OS_FLAG_WAIT_SET_AND | OS_FLAG_CONSUME,0,&err);Uart_Printf("LED亮rn");Led(ON);OSTimeDly(100);Led(OFF);OST

3、imeDly(100);Uart_Printf("LED滅 實驗成功rn");中斷任務void EInt0Isr(void)INT8U err; rI_ISPC = BIT_EINT0;OSIntEnter();Uart_Printf("發(fā)送按鍵中斷rn");OSFlagPost(LED_Flag,(OS_FLAGS)1,OS_FLAG_SET,&err);Uart_Printf("發(fā)送低位標志rn");OSIntExit();Uart_Printf("退出按鍵中斷rn");試驗程序#include &qu

4、ot;grobal.h"/*任務、堆棧、優(yōu)先級定義*/OS_STK Task_Start_StackSTACKSIZE_M;void Task_Start( void *Id ) ;#define Task_Start_PRIO 4OS_STK Task_A_StackSTACKSIZE_M;void Task_A( void *Id ) ;#define Task_A_PRIO 16OS_STK Task_B_StackSTACKSIZE_M;void Task_B( void *Id ) ;#define Task_B_PRIO 15OS_FLAG_GRP *LED_Flag;

5、/LED事件標志組void Main(void)char Id0 = '1'U8 err;SystemInit();Delay(5000);/延時等待有效復位Led( OFF ) ;OSInit();/創(chuàng)建LED事件標志組LED_Flag = OSFlagCreate(0,&err); if(err != OS_NO_ERR) Uart_Printf("創(chuàng)建LED_Flag事件標志組失敗,錯誤碼%dn",err); OSTaskCreate(Task_Start, (void *)&Id0, (void *)&Task_Start_S

6、tackSTACKSIZE_L - 1, Task_Start_PRIO);OSStart();void Task_Start(void *p_arg)char Id1 = '2'char Id2 = '3' U16 ver ;(void)p_arg;Uart_Printf("nn考核題2.nn");Uart_Printf("uCOS-II實時操作系統(tǒng)初始化.n");OSTimeSet(0); Uart_Printf("uCOS-II實時操作系統(tǒng)時鐘設定.n"); ver = OSVersion();

7、Uart_Printf("uCOS-II實時操作系統(tǒng)版本:%dn",ver); TimersStart();OSTimeDly(20);OSTaskCreate( Task_A, (void *)&Id1, (void *)&Task_A_StackSTACKSIZE_M-1, Task_A_PRIO); OSTaskCreate( Task_B, (void *)&Id2, (void *)&Task_B_StackSTACKSIZE_M-1, Task_B_PRIO ) ; while(1)OSTaskSuspend(OS_PRIO_SE

8、LF);/*【功能說明】A任務*/void Task_A(void *p_arg)INT8U err;while(1)OSTimeDly(100);OSFlagPost(LED_Flag,(OS_FLAGS)2,OS_FLAG_SET,&err);if(err != OS_NO_ERR)Uart_Printf("Task_A事件標志組失敗,錯誤碼%dn",err);elseUart_Printf("發(fā)送標志位rn");/*【功能說明】B任務 */void Task_B(void *p_arg)INT8U err;while(1) OSFlagPe

9、nd(LED_Flag,(OS_FLAGS)3,OS_FLAG_WAIT_SET_AND | OS_FLAG_CONSUME,0,&err);Uart_Printf("LED亮rn");Led(ON);OSTimeDly(100);Led(OFF);OSTimeDly(100);Uart_Printf("LED滅 實驗成功rn");/*/* void EInt0Isr(void)/* Description: 外部中斷0/* Argument : none /*/void EInt0Isr(void)INT8U err; rI_ISPC = BIT_EINT0;OSIntEnter();Uart_Printf("發(fā)送按鍵中斷rn&q