北航ARM9嵌入式实验报告3.doc

实验三 基于实时操作系统mC/OS-II实验一、 实验目的1. 掌握在内核移植了uCOS-II 的处理器上创建任务的方法。2. 了解uCOS-II内核的主要结构。二、 实验内容1. 运行C盘的实验十，在超级终端上观察两个任务的切换。2. 创建第三个任务，在超级终端上打印第三个任务。 3. 任务13，每个控制“红”、“绿”、“蓝”一种颜色的显示，适当增加OSTimeDly()的时间，且优先级高的任务延时时间加长，以便看清三种颜色。4. 引入一个全局变量 BOOLEAN ac_key，解决完整刷屏问题。5. 创建任务4，#define rUTRSTAT0 (*(volatile unsigned *)0x50000010)#define RdURXH0()(*(volatile unsigned char *)0x50000024)6. 当键盘有输入时在超级终端上显示相应的字符。三、 预备知识1.了解uCOS-II的系统结构。 2.了解ARM920T处理器的结构。四、 实验设备硬件：模拟电压信号源、2410s教学实验箱、PC机Pentium100以上、ARM920T的JTAG仿真器、串口连接线。软件：PC机操作系统WinXP 、ARM ADS1.2集成开发环境、超级终端通讯程序、仿真器驱动程序。五、 实验步骤1 以实验十为模板，将实验六 inc目录下的LCD320.H 和src目录下的LCD640.C拷到 模板下的相应目录。包含以下头文件 #include “inc/lcd320.h”。改LCD640.C 文件中包含头文件的路径 。 #include lcd320.h ” #include reg2410.h”4 声明引用的变量 extern U32 LCDBufferII2480640;5 程序代码如下：/*Copyright (c) 2004-2007 , All rights reserved.by threewter2004.5.12*/* #说明: C main 函数，ucos-ii初始化等定义- Bug - TODO list -修正-2004-5-12创建*/#include./ucos-ii/includes.h /* uC/OS interface */#include ./ucos-ii/add/osaddition.h#include ./inc/drivers.h#include ./inc/sys/lib.h#include ./src/gui/gui.h#include ./inc/lcd320.h#include #include /#pragma import(_use_no_semihosting_swi) / ensure no functions that use semihosting OS_EVENT *MboxSem;extern U32 LCDBufferII2480640; /*任务定义*/*OS_STK SYS_Task_StackSTACKSIZE= 0, ; /system task刷新任务堆栈#define SYS_Task_Prio1 void SYS_Task(void *Id);*/OS_STK task1_StackSTACKSIZE=0, ; /Main_Test_Task堆栈void Task1(void *Id); /Main_Test_Task#define Task1_Prio 12 /任务优先级OS_STK task2_StackSTACKSIZE=0, ; /test_Test_Task堆栈void Task2(void *Id); /test_Test_Task#define Task2_Prio 15OS_STK task3_StackSTACKSIZE=0, ; /test_Test_Task堆栈void Task3(void *Id); /test_Test_Task#define Task3_Prio 17OS_STK task4_StackSTACKSIZE=0, ; /test_Test_Task堆栈void Task4(void *Id); /test_Test_Task#define Task4_Prio 10int i,j,k;U32 jcolor;BOOLEAN ac_key;void Uart_SendByten(int,U8);char Uart_Getchn(char* Revdata, int Uartnum, int timeout);#define U8 unsigned char#define TRUE 1#define FALSE 0/#pragma import(_use_no_semihosting_swi) / ensure no functions that use semihosting #define rUTRSTAT0(*(volatile unsigned *)0x50000010)#define rUTRSTAT1(*(volatile unsigned *)0x50004010)#define WrUTXH0(ch)(*(volatile unsigned char *)0x50000020)=(unsigned char)(ch)#define WrUTXH1(ch)(*(volatile unsigned char *)0x50004020)=(unsigned char)(ch)#define RdURXH0()(*(volatile unsigned char *)0x50000024)#define RdURXH1()(*(volatile unsigned char *)0x50004024)/*已经定义的OS任务*#define SYS_Task_Prio1#define Touch_Screen_Task_Prio9#define Main_Task_Prio 12#define Key_Scan_Task_Prio 58#define Lcd_Fresh_prio 59#define Led_Flash_Prio 60*/*事件定义*/ Main function. /int main(void)ARMTargetInit(); / do target (uHAL based ARM system) initialisation / ac_key=0;OSInit(); / needed by uC/OS-II / LCD_Init();/LCD初始化/OSInitUart();/initOSFile();/#if USE_MINIGUI=0/initOSMessage();/initOSDC();/LoadFont();/#endif/loadsystemParam();/ create the tasks in uC/OS and assign increasing / priorities to them so that Task3 at the end of / the pipeline has the highest priority. /LCD_printf(Create task on uCOS-II.n);/OSTaskCreate(SYS_Task, (void *)0, (OS_STK *)&SYS_Task_StackSTACKSIZE-1, SYS_Task_Prio);OSTaskCreate(Task1, (void *)0, (OS_STK *)&task1_StackSTACKSIZE-1, Task1_Prio); /任务创建OSTaskCreate(Task2, (void *)0, (OS_STK *)&task2_StackSTACKSIZE-1, Task2_Prio);OSTaskCreate(Task3, (void *)0, (OS_STK *)&task3_StackSTACKSIZE-1, Task3_Prio); OSTaskCreate(Task4, (void *)0, (OS_STK *)&task4_StackSTACKSIZE-1, Task4_Prio); OSAddTask_Init(0); BSPprintf(0,Starting uCOS-II.n);/LCD_printf(Starting uCOS-II.n);/LCD_printf(Entering graph mode.n);/LCD_ChangeMode(DspGraMode);OSStart(); / start the OS / never reached /return 0;/main/void Task1(void *Id)for(;) jcolor=0x000000f8; /R 红色BSPprintf(0,run task1n); if(ac_key=0) ac_key=1; for (k=0;k480;k+) for (j=0;j640;j+) LCDBufferII2kj=jcolor; LCD_Refresh(); ac_key=0; OSTimeDly(9000);void Task2(void *Id)for(;) jcolor=0x0000fc00; /G 绿色BSPprintf(0,run task2n); if(ac_key=0) ac_key=1; for (k=0;k480;k+) for (j=0;j640;j+) LCDBufferII2kj=jcolor; LCD_Refresh(); ac_key=0; OSTimeDly(7000);void Task3(void *Id) for(;) jcolor=0x00f80000; /B 蓝色BSPprintf(0,run task2n); if(ac_key=0) ac_key=1; for (k=0;k480;k+) for (j=0;j640;j+) LCDBufferII2kj=jcolor; LCD_Refresh(); ac_key=0; OSTimeDly(5000); void Task4(void *Id) for(;) char a1; char err; err=Uart_Getchn(a,0,0);/从串口采集数据 if (err=TRUE) Uart_SendByten(0,a0);/显示采集的数据OSTimeDly(10); void Uart_SendByten(int Uartnum, U8 data)/ok eric rong /int i;if(Uartnum=0) while(!(rUTRSTAT0 & 0x4); /Wait until THR is empty.hudelay(10);WrUTXH0(data); else while(!(rUTRSTAT1 & 0x4); /Wait until THR is empty.hudelay(10);WrUTXH1(data); char Uart_Getchn(char* Revdata, int Uartnum, int timeout)if(Uartnum=0)if(rUTRSTAT0 & 0x1)/Receive data read *Revdata=RdURXH0(); return TRUE; else re