ucos 中中断程序的应用问题 (amobbs.com 阿莫电子技术论坛) -

haihai 发表于 2009-8-26 15:48:29

ucos 中中断程序的应用问题

各位大哥，小弟刚学UC，移植正确，编了一段简单的串口程序，如下：

#define Test1_GLOBALS
#include "D:\d\kaifabu\iccavr\ucos2_application\INCLUDES.H"

//******************************************************************************
// Constants
#define TaskStartPrio 10
// Task-Prioritaeten
#define UART_SENDENABLE() { UCSR0B&=~(1<<RXEN0);UCSR0B&=~(1<<RXCIE0); UCSR0B|=(1<<TXEN0); UCSR0B|=(1<<TXCIE0); UCSR0B|=(1<<UDRIE0);PORTE|=(1<<2);}
#define UART_RECEIVERENABLE() { UCSR0B&=~(1<<TXEN0);UCSR0B|=(1<<RXEN0);UCSR0B|=(1<<RXCIE0); PORTE&=~(1<<2); }

unsignedstatic char UartSend_ToHGTemp ;
unsignedstatic char UartSend_ToHG1    ;
unsignedstatic char *Uart_send_ptr = UartSend_ToHG1 ;
unsignedstatic char    UART_i=0x00;
//*****************************************************************************
// Variablen
OS_STK Task1Stack; // startup task stack
OS_STK Task2Stack;

//*****************************************************************************
// Prototypes
void Task1(void *data);
void uart0_init(void);
void uart_collect (void)
{
   unsignedchar*UartToHG_ptr_1=0x00;
   unsignedchar*UartToHG_ptr_k=UartSend_ToHG1;



   OS_ENTER_CRITICAL();
   UartToHG_ptr_1=UartToHG_ptr_k;
   *UartToHG_ptr_k=0x05; UartToHG_ptr_k++;
   *UartToHG_ptr_k=0x01; UartToHG_ptr_k++;
   *UartToHG_ptr_k=0x03 ;UartToHG_ptr_k++;
   *UartToHG_ptr_k=0x00 ; UartToHG_ptr_k++;
   *UartToHG_ptr_k=0x01 ; UartToHG_ptr_k++;
   *UartToHG_ptr_k=0x00 ; UartToHG_ptr_k++;
   *UartToHG_ptr_k=0x03 ; UartToHG_ptr_k++;


   OS_EXIT_CRITICAL() ;
}
void main(void){
OSInit(); // OS init

OSTaskCreate(Task1,
//(void *)((unsigned char *)Uart_send_ptr),
(void *)(0),
&Task1Stack,
TaskStartPrio);

//OSTaskCreate(Task3,
//(void *)(int)'b',
//&Task2Stack,
//TaskStartPrio+1);
// init und start tick

uart0_init();
TC2_Init();
//DDRG |= 0x18; PORTG &=~(1<<PG3); PORTG &=~(1<<PG4);
//UART_SENDENABLE();
OSStart(); // start multitasking

}

//*****************************************************************************
void Task1(void *data)
{
// char c = (int)data;


// Timer/Counter#2 Overflow and Comp init
   uart_collect ();
for (;;)
{
data=data;
// putchar(c);
while(!(UCSR0A&0x20));
UCSR0B|=(1<<TXEN0);
PORTE|=(1<<2);
UCSR0B|=(1<<UDRIE0);
//SEI();
// UCSR0A|=(1<<UDRE0);
//UDR0 = *((unsigned char *)((void *)data));
// PORTA = ~PORTA;
// DDRA = 0xff;
OSTimeDly (5);

}
}
//void Task3(void *data){
// char c = (int)data;
//for (;;){
// putchar(c);
//while(!(UCSR0A&0x20));
//UDR0 = 'b';
// PORTA = ~PORTA;
// DDRA = 0xff;
//OSTimeDly (5);

//}
//}

//..............................................................
//if the data register is empty ,load the data
//...............................................................
#pragmainterrupt_handler dataD_empty:20
void dataD_empty(void)
{


OSIntEnter();

UDR0 = *Uart_send_ptr;
Uart_send_ptr++;
UART_i++;
if (UART_i>6)
{
UART_i=0;
Uart_send_ptr = UartSend_ToHG1 ;
}

OSIntExit();

return;

         //storeglobal registers

}
但是程序通过串口调试，只是05 不停的发，其他字节发不出，请问高手们是什么原因造成的呀？中断不可以用C直接写么？应该
注意些什么呢？谢谢。

mion 发表于 2009-8-26 16:57:56

UC中可以用C直接写！

haihai 发表于 2009-8-26 17:06:19

谢谢LS，那我上面的程序是什么问题呀？

mion 发表于 2009-8-26 17:17:16

不是中断的问题！可能是指针的问题！

haihai 发表于 2009-8-26 17:20:25

指针在UC中和在前后台中还有什么不同的地方么，谢谢

mion 发表于 2009-8-26 17:22:06

总中断打开没！

haihai 发表于 2009-8-26 17:25:22

我试了，while(!(UCSR0A&0x20));
UCSR0B|=(1<<TXEN0);
PORTE|=(1<<2);
UCSR0B|=(1<<UDRIE0);
//SEI();
SEI（）屏蔽与不屏蔽一样

mion 发表于 2009-8-26 20:50:04

那你试一试在main函数中打开~

haihai 发表于 2009-8-27 08:23:22

试了试一样的不行，谢谢你的好心

haihai 发表于 2009-8-27 11:06:56

莫非一定也要用环形缓冲区否？我现在为了方便只是编了个简单的，是否？

haihai 发表于 2009-8-27 13:51:51

啊，我现在觉得应该必须用上信号量，因为程序时刻都在调度TASK，容易引起错误，是否正确？

haihai 发表于 2009-8-31 10:33:01

#define Test1_GLOBALS
#include "D:\d\kaifabu\iccavr\ucos2_application\INCLUDES.H"
#include <iom128v.h>
#include <macros.h>

//******************************************************************************
// Constants
#define TaskStartPrio 10
// Task-Prioritaeten
#define UART_SENDENABLE() { UCSR0B&=~(1<<RXEN0);UCSR0B&=~(1<<RXCIE0); UCSR0B|=(1<<TXEN0); UCSR0B|=(1<<TXCIE0); UCSR0B|=(1<<UDRIE0);PORTE|=(1<<2);}
#define UART_RECEIVERENABLE() { UCSR0B&=~(1<<TXEN0);UCSR0B|=(1<<RXEN0);UCSR0B|=(1<<RXCIE0); PORTE&=~(1<<2); }
OS_EVENT*Pevent_SerialSend;    //Theserialsend semp
unsignedstatic char UartSend_ToHGTemp ;
unsignedstatic char UartSend_ToHG1    ;

//unsignedvolatile static char *Uart_send_ptr_2 = UartSend_ToHG1 ;
unsignedstatic char    UART_i=0x00;
INT8U Perr;
INT8U Ptemp;
INT8U err;
#define TXBUFSIZE 54
unsigned staticchar BUF_Serial_ctr ;

typedef struct
{
unsignedchar Ring;
unsignedchar tail;// index to last read entry
unsignedchar head;// index to first valid entry
} TxBufType;
static volatile TxBufType TxBuf={{0}};
//.................................................................
//----------------------------------------------------------
// returns 0 if characters are present in ringbuffer
// returns 1 if buffer is empty
// ---------------------------------------------------------
unsigned char TxBufEmpty(void)
{
unsigned char retval;
// ES = 0;
OS_ENTER_CRITICAL();
retval = (TxBuf.head == TxBuf.tail) ? 1 : 0;
// ES = 1;
   OS_EXIT_CRITICAL() ;
return(retval);
}
//.............................................................
//----------------------------------------------------------
// adds next character to sendringbuffer
// if buffer is full, the character is lost
//----------------------------------------------------------
static void TxBufAddChar(unsigned char c)
{
unsigned char pos = TxBuf.head;
TxBuf.head++;
if (TxBuf.head >= TXBUFSIZE) TxBuf.head = 0;
if (TxBuf.head == TxBuf.tail) // full?
{
   TxBuf.head = pos;
}
else
{
   TxBuf.Ring=c;
}
}
// ----------------------------------------------------------------
// returns next character fromSend Ringbuffer
// if buffer is empty, the last sendcharacter is returned
// ----------------------------------------------------------------
unsigned char TxBufGetChar(void)
{
unsigned volatile char c;
//ES = 0;
OS_ENTER_CRITICAL();
c = 0x55;

if(TxBuf.head == TxBuf.tail) return c; // empty--> don't change indices, just return last character
TxBuf.tail++;
if (TxBuf.tail >= TXBUFSIZE) TxBuf.tail = 0;
c = TxBuf.Ring;
// ES = 1;
OS_EXIT_CRITICAL() ;
return c;
}

//.................................................................
//UART0Init process
//....................................................................
voiduart0_init(void)
{

OS_ENTER_CRITICAL();
UCSR0B = 0x00;       //disable while setting baud rate
UBRR0H=0;
UBRR0L=51;                            //设置波特率为9600b
UCSR0C=0x06;
                     //设置桢格式，8个数据位，一个停止位
// UCSR0B|=(1<<UCSZ02);    //9bitdata frame
                     /* 接收器使能,接收结束中断使能，*/
UCSR0B|=(1<<RXEN0);

OS_EXIT_CRITICAL() ;
}
//*****************************************************************************
// Variablen
OS_STK Task1Stack; // startup task stack
OS_STK Task2Stack;

//*****************************************************************************
// Prototypes
void Task1(void *data);
void uart0_init(void);
void uart_collect (void)
{
   unsignedvolatilechar*UartToHG_ptr_1=0x00;
   unsignedvolatile char*UartToHG_ptr_k=UartSend_ToHG1;



   OS_ENTER_CRITICAL();
   UartToHG_ptr_1=UartToHG_ptr_k;
   *UartToHG_ptr_k=0x23;
   UartToHG_ptr_k++;
   *UartToHG_ptr_k=0x01;
   UartToHG_ptr_k++;
   *UartToHG_ptr_k=0x03 ;
   UartToHG_ptr_k++;
   *UartToHG_ptr_k=0x00 ;
   UartToHG_ptr_k++;
   *UartToHG_ptr_k=0x01 ;
   UartToHG_ptr_k++;
   *UartToHG_ptr_k=0x00 ;
   UartToHG_ptr_k++;
   *UartToHG_ptr_k=0x03 ;
   UartToHG_ptr_k++;


   OS_EXIT_CRITICAL() ;
}
void main(void)
{
unsigned chari;

OSInit(); // OS init

OSTaskCreate(Task1,
(void *)(0),
&Task1Stack,
TaskStartPrio);
Pevent_SerialSend= OSSemCreate(1);

uart0_init();
TC2_Init();
   uart_collect ();

OSStart(); // start multitasking

}

//*****************************************************************************
void Task1(void *data)
{
// char c = (int)data;
unsigned chari;
// unsigned char temp;
// Timer/Counter#2 Overflow and Comp init
unsigned char *Uart_send_ptr = UartSend_ToHG1 ;

for (;;)
{
data= data;
//OS_ENTER_CRITICAL();

OSSemPend(Pevent_SerialSend,0,&err);



   for (i=0x07;i>0;i--)
   {

TxBufAddChar( *Uart_send_ptr);
      Uart_send_ptr++;
}
if ( Uart_send_ptr>=UartSend_ToHG1+0x06)
   {Uart_send_ptr=UartSend_ToHG1;}


   UDR0 =TxBufGetChar();
   UCSR0B|=(1<<TXEN0);
   PORTE|=(1<<2);



OSTimeDly (15);

   }
   // OS_EXIT_CRITICAL() ;
}

现在我编了一个信号量和缓冲区的，为什么我的程序会不停的发，Pevent_SerialSend= OSSemCreate(1);我建立的信号量的初值是
1，当调用OSSemPend(Pevent_SerialSend,0,&err); 时，信号量减一，下次进行任务调度时应该任务挂起呀？也就是发一次就停呀，可现在会不停的发，当我把Pevent_SerialSend= OSSemCreate(0);初始化为0时正确，一次也不发。恳求高手指点，谢谢。

页: [1]

amobbs.com 阿莫电子技术论坛's Archiver

ucos 中中断程序的应用问题