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波特率自适应技术在DSP5402上的应用之C++接收程序（转）

已有 732 次阅读2009-9-30 04:34 |系统分类:DSP






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/*------------------------------------------------
  波特率自适应技术在DSP5402上的应用之C++接收程序
菜农 HotPower@126.com


2005.6.30   23:30    于西安大雁塔村队部


菜地: http://hotpower.21ic.org
------------------------------------------------*/
＃i nclude <cstdio> //C语言可以用stdio.h
＃i nclude <cstring>//C语言可以用string.h
＃i nclude "C5402DEF.h"//DSP菜鸟HotPower创建
＃i nclude "class.h"


#define ccsdebug 1//1--IO模拟SPI;  0--硬件McBSP模块


extern "C" interrupt void Timer0Isr();//注意加extern "C"
extern "C" interrupt void Timer1Isr();


extern "C" interrupt void Eint0Isr();
extern "C" interrupt void Eint1Isr();
extern "C" interrupt void Eint2Isr();
extern "C" interrupt void Eint3Isr();



SystemObj::SystemObj(void)
{
  Disable();//关中断
  SREG->IMR = 0x0000;//
  SREG->IFR = 0xffff;//清除
//设置0x0080为中断向量表首址，在第2个128页内。
  SREG->PMST = (0x01 << PMST_IPTR) | (1 << PMST_MP_MC) | (1 << PMST_OVLY);
//  SREG->PMST |= (1 << PMST_DROM);//数据可const.
/*---------------------------------------------------------------------------
若：设置0x0100为中断向量表首址，在第3个128页内。
则：*.cmd文件应该改为：
     PAGE 0: VECS: origin=0x0100,  length=0x66
则：
  SREG->PMST = (0x02 << PMST_IPTR) | (1 << PMST_MP_MC) | (1 << PMST_OVLY);
----------------------------------------------------------------------------*/
  SystemInit();//系统初始化
}


void SystemObj::SystemInit(void)
{
  PllInit();//PLL初始化
  TIMER0Init();
  TIMER1Init();
  EintInit();
/*--------------------------------------------------------
  注意以下2个变量的作用域的不同
--------------------------------------------------------*/ 
  if (::SystemRamTest != 0x55aa) {//全局变量SystemRamTest
    ::SystemRamTest = 0x55aa;//改写全局变量
  }
  if (SystemRamTest != 0x55aa) {//类成员变量SystemRamTest
    SystemRamTest = 0x55aa;//改写类成员变量
  }
  ::IOXF = 0;
}


void SystemObj::PllInit(void)
{
volatile unsigned int start;
  SREG->SWWSR = 0x2000;
  do {
    SREG->CLKMD = 0;
    __nop();
  }
  while(SREG->CLKMD & (1 << CLKMD_PLLSTATUS));
//  SREG->CLKMD = (0 << CLKMD_PLLMUL) | (30 << CLKMD_PLLCOUNT) | (1 << CLKMD_PLLONOFF) | (1 << CLKMD_PLLNDIV) | (1 << CLKMD_PLLSTATUS);//10M
  SREG->CLKMD = (9 << CLKMD_PLLMUL) | (30 << CLKMD_PLLCOUNT) | (1 << CLKMD_PLLONOFF) | (1 << CLKMD_PLLNDIV) | (1 << CLKMD_PLLSTATUS);//100M
//  SREG->CLKMD = (14 << CLKMD_PLLMUL) | (30 << CLKMD_PLLCOUNT) | (1 << CLKMD_PLLONOFF) | (1 << CLKMD_PLLNDIV) | (1 << CLKMD_PLLSTATUS);//150M
  for (start = 0; start < 10000; start ++);//等待外设上电复位正常结束
}


void SystemObj::TIMER0Init(void)
{
  TIMER0->TCR = (1 << TCR_TSS);//关闭定时器0
  TIMER0->PRD = 60000;//设置定时周期
  TIMER0->TIM = 60000;//设置定时计数器
  TIMER0->TCR &= ~(1 << TCR_TSS);//启动定时器0
  SREG->IMR |= (1 << IMR_TINT0);//允许TINT0中断
}


void SystemObj::TIMER1Init(void)
{
  TIMER1->TCR = (1 << TCR_TSS);//关闭定时器1
  TIMER1->PRD = 0xffff;//设置定时周期
  TIMER1->TIM = 0xffff;//设置定时计数器
//  TIMER1->TCR &= ~(1 << TCR_TSS);//启动定时器1
//  SREG->IMR |= (1 << IMR_TINT1);//允许TINT1中断
}


void SystemObj::EintInit(void)
{
  SREG->IMR |= (1 << IMR_INT0);//允许INT0中断
  SREG->IMR |= (1 << IMR_INT1);//允许INT1中断
  SREG->IMR |= (1 << IMR_INT2);//允许INT2中断
  SREG->IMR |= (1 << IMR_INT3);//允许INT3中断
}


 


LcdObj::LcdObj(void)
{
  LcdInit();
}


void LcdObj::LcdSpiSetup(void)
{
#if (ccsdebug == 0)
/*-----------------------------------------------------------
  硬件McBSP模块配置为SPI接口
实验目的：
  演练硬件McBSP模块配置为SPI接口的应用。
------------------------------------------------------------*/
  McBSP1->SPSA = SPCR1;
  McBSP1->SPSD = 0;
//  McBSP1->SPSD &= ~(1 << SPCR1_RRST);//禁止串口接收
  _delay_loop_(1);//延时等待
  McBSP1->SPSA = SPCR2;
  McBSP1->SPSD = 0;
//  McBSP1->SPSD &= ~(1 << SPCR2_XRST);//禁止串口发送
  _delay_loop_(1);//延时等待
  McBSP1->SPSA = SPCR1;
  McBSP1->SPSD = (0x02 << SPCR1_CLKSTP);//CLKSTP=10b
  _delay_loop_(1);//延时等待
  McBSP1->SPSA = PCR;
  McBSP1->SPSD = (1 << PCR_FSXM)  //设置FSX引脚为输出，控制LCD12864的片选信号SS
               | (0 << PCR_FSXP)  //FSX引脚平时输出低电平(LCD12864的片选信号SS无效)
               | (1 << PCR_CLKXM) //设置CLKX引脚为输出
               | (1 << PCR_CLKXP);//CLKXP引脚平时输出高电平
  _delay_loop_(1);//延时等待
  McBSP1->SPSA = SRGR1;
  McBSP1->SPSD = (0x07 << SRGR1_FWID)   //0x00~0x07~0xff
               | (0x80 << SRGR1_CLKGDV);//速率0x80
  _delay_loop_(1);//延时等待
  McBSP1->SPSA = SRGR2;
  McBSP1->SPSD = (1 << SRGR2_CLKSM);//
  _delay_loop_(1);//延时等待
  McBSP1->SPSA = RCR1;
  McBSP1->SPSD = (0x00 << RCR1_RFRLEN1);//8BIT
  _delay_loop_(1);//延时等待
  McBSP1->SPSA = XCR1;//延时等待
  McBSP1->SPSD = (0x00 << XCR1_RFRLEN1);//8BIT
  _delay_loop_(1);//延时等待
  McBSP1->SPSA = RCR2;
  McBSP1->SPSD = (0x02 << RCR2_RDATDLY);//0x01
  _delay_loop_(1);//延时等待
  McBSP1->SPSA = XCR2;
  McBSP1->SPSD = (0x02 << XCR2_RDATDLY);//0x01
  _delay_loop_(1);//延时等待
  McBSP1->SPSA = SPCR2;
  McBSP1->SPSD |= (1 << SPCR2_GRST) | (1 << SPCR2_XRST) | (1 << SPCR2_FRST);
  _delay_loop_(1);//延时等待
#else
/*-----------------------------------------------------------
  硬件McBSP模块配置为普通IO软件模拟SPI时序
实验目的：
  演练硬件McBSP模块配置为普通IO的应用.以备IO紧缺时急用。
------------------------------------------------------------*/
  McBSP1->SPSA = SPCR1;
  McBSP1->SPSD = 0;
  McBSP1->SPSD &= ~(1 << SPCR1_RRST);//禁止串口接收
  McBSP1->SPSA = SPCR2;
  McBSP1->SPSD = 0;
  McBSP1->SPSD &= ~(1 << SPCR2_XRST);//禁止串口发送
  McBSP1->SPSA = PCR;
  McBSP1->SPSD = (1 << PCR_XIOEN) | (1 << PCR_RIOEN);//设置收发为IO接口,DX输出,DR,CLKS输入
  McBSP1->SPSD |= (1 << PCR_FSXM) | (1 << PCR_CLKXM);//设置FSX,CLKX可做IO输出
  McBSP1->SPSD |= (1 << PCR_FSRM) | (1 << PCR_CLKRM);//设置FSR,CLKR可做IO输出
  McBSP1->SPSD &= ~(1 << PCR_FSXP);//FSX信号=0
  McBSP1->SPSD |= (1 << PCR_CLKXP);//CLKX信号=1
  McBSP1->SPSD |= (1 << PCR_DX_STAT);//DX信号=1
#endif
}


void LcdObj::LcdInit(void)
{
  _delay_loop_(1000);//延时等待
  LcdSpiSetup();
/*---------------------------------------------------
    LCD模块上电等待延时
----------------------------------------------------*/
  _delay_loop_(1000);//延时等待
  LcdClearBuffer();
  LcdSendCommand(0x20);//发送4位控制命令
//  LcdSendCommand(0x30);//发送8位控制命令//与8位4位无关!!!
  LcdSendCommand(0x02);//发送位址归位命令，设定DDRAM位址计数器为0
  LcdSendCommand(0x04);//发送进入点命令
  LcdSendCommand(0x0c);//发送开显示关光标命令
  LcdSendCommand(0x01);//发送清除显示命令
  LcdSendCommand(0x80);//发送设定DDRAM地址0x00命令
//Keil C51汉字0xfd出错测试   
//  SetLcdDisplayPos(0, 0);//汉字定位到上行左端
//  LcdDisplay("褒饼昌除待谍洱俘");
//  LcdDisplay("1234567812345678");
//  SetLcdDisplayPos(1, 0);//汉字定位到上行左端
//  LcdDisplay("庚过糊积箭烬君魁");
//  LcdDisplay("1234567812345678");
//  SetLcdDisplayPos(2, 0);//汉字定位到上行左端
//  LcdDisplay("例笼慢谬凝琵讫驱");
//  LcdDisplay("1234567812345678");
  SetLcdDisplayPos(3, 0);//汉字定位到上行左端
  LcdDisplay("三升数她听妄锡淆");
//  LcdDisplay("1234567812345678");
}


void LcdObj::LcdSend(unsigned char cData)
{
  cData &= 0xff;
#if (ccsdebug == 0)
  McBSP1->DXR1 = cData;//发送串行数据或命令
  _delay_loop_(1);//延时等待
  McBSP1->SPSA = SPCR2;
  while((McBSP1->SPSD & (1 << SPCR2_XRDY)) == 0) {//等待发送结束
    __nop();
    __nop();
  }
  _delay_loop_(1);//延时等待
#else 
unsigned int i;
  McBSP1->SPSA = PCR;
  for (i = 0; i < 8; i ++) {
    McBSP1->SPSD &= ~(1 << PCR_CLKXP);//CLKX信号=0
    _delay_loop_(1);//延时等待
    if (cData & 0x80) {//MSB最高位为1时
      McBSP1->SPSD |= (1 << PCR_DX_STAT);//DX信号=1
 }
 else {
      McBSP1->SPSD &= ~(1 << PCR_DX_STAT);//DX信号=0
 }
 cData <<= 1;
    _delay_loop_(1);//延时等待
    McBSP1->SPSD |= (1 << PCR_CLKXP);//CLKX信号=1
    _delay_loop_(1);//延时等待
  } 
  McBSP1->SPSD |= (1 << PCR_DX_STAT);//DX信号=1
  _delay_loop_(1);//延时等待
#endif 
}


/*--------------------------------------------------------
    发送8位LCD控制命令
--------------------------------------------------------*/
//__inline
void LcdObj::LcdSendCommand(unsigned char cCommand)
{
/*--------------------------------------------------------
    发送同步脉冲11111 WR(0) RS(0) 0发送顺序从左至右）
--------------------------------------------------------*/
#if (ccsdebug == 1)
  McBSP1->SPSD |= (1 << PCR_FSXP);//IO模拟控制FSX信号=1
  _delay_loop_(1);//延时等待
#endif
  LcdSend(0xf8);//发送LCD控制命令
  LcdSend(cCommand & 0xf0);//发送高4位LCD控制命令
  LcdSend((cCommand << 4) & 0xff);//发送低4位LCD控制命令
#if (ccsdebug == 1)
  McBSP1->SPSD &= ~(1 << PCR_FSXP);//IO模拟控制FSX信号=0
#endif
  if (cCommand == 0x01) _delay_loop_(160);//延时等待
  else _delay_loop_(72);//st7920要求等待72uS
}


/*--------------------------------------------------------
    发送8位LCD显示数据
--------------------------------------------------------*/
//__inline
void LcdObj::LcdSendData(unsigned char cData)
{
  cData &= 0xff;
/*--------------------------------------------------------
    发送同步脉冲11111 WR(0) RS(0) 0发送顺序从左至右）
--------------------------------------------------------*/
#if (ccsdebug == 1)
  McBSP1->SPSD |= (1 << PCR_FSXP);//IO模拟控制FSX信号=1
  _delay_loop_(1);//延时等待
#endif
  LcdSend(0xfa);//发送LCD显示数据
  LcdSend((cData & 0xf0) & 0xff);//发送高4位LCD显示数据
  LcdSend((cData << 4) & 0xff);//发送低4位LCD显示数据
#if (ccsdebug == 1)
  McBSP1->SPSD &= ~(1 << PCR_FSXP);//IO模拟控制FSX信号=0
#endif
  _delay_loop_(72);//st7920要求等待延时72uS
}


//__inline
void LcdObj::SetLcdDisplayPos(unsigned int row, unsigned int col)
{
  row &= 0x03;//LCD12864为4行汉字
  col &= 0x0f;//每行8个汉字16个字符
  LcdRow = row;
  LcdCol = col;
  LcdRowWriteEnable[row] = true;//允许此行刷新汉字显示
}


//__inline
void LcdObj::LcdClearBuffer(void)
{
unsigned int i, j;
  for (i = 0;i < 4;i ++) {
    for (j = 0;j < 16; j ++) {
      LcdBuffer[j] = ' ';
    }
    LcdRowWriteEnable = true;//允许此行刷新汉字显示
  }
  LcdRow = 0;
  LcdCol = 0;
}


//__inline
void LcdObj::LcdDisplayBuffer(void)
{
unsigned int i, j;
  for (i = 0; i < 4; i ++) {//LCD12864为4行汉字
    if (LcdRowWriteEnable) {//允许此行刷新汉字显示
      LcdSendCommand(0x80 + (i & 1) * 16 + (i >> 1) * 8);//移动光标
      _delay_loop_(1);//延时等待
      for (j = 0; j < 16; j ++) {//每行8个汉字16个字符
        LcdSendData(LcdBuffer[j]);//刷新显示字符
        _delay_loop_(1);//延时等待
      }
   LcdRowWriteEnable = false;//过后不允许此行刷新汉字显示
      _delay_loop_(1);//延时等待
 }
  }
}


//__inline
void LcdObj::LcdDisplay(const char * string)
{
  while(*string) {
    LcdBuffer[LcdRow][LcdCol ++] = (unsigned char)*string ++;
  }
}


void LcdObj::LcdDisplay(unsigned char ch)
{
  LcdBuffer[LcdRow][LcdCol ++] = ch;
  if (LcdCol >= 16) {
    LcdRow ++;//换行
    LcdCol = 0;//回车
  }
  else {
    LcdRowWriteEnable[LcdRow] = true;//允许此行刷新汉字显示
  }
  LcdCol &= 0x0f;
  LcdRow &= 3;
}



void LcdObj::LcdDisplay(double val)
{
char string[17];
  std::sprintf(string, "%5.2f", val);//注意std::
  LcdDisplay(string);
}


void LcdObj::LcdDisplay(unsigned int val)
{
char string[17];
  std::sprintf(string, "%04X", val);//注意std::
  LcdDisplay(string);
}


void LcdObj::LcdDisplay(unsigned long val)
{
//char string[17];
  LcdDisplay((unsigned int)(val >> 16));
  LcdDisplay((unsigned int)(val & 0xffff));
//  std::sprintf(string, "%08LX", (unsigned long)val);//注意std::
//  LcdDisplay(string);
}


void LcdObj::LcdDisplay(unsigned char hexstr[], unsigned int len)
{
unsigned char ch;
  for (int i = 0; i < len; i ++) {
    ch = *hexstr++;
 if (ch < 0xa0) {
      LcdBuffer[LcdRow][LcdCol ++] = (ch >> 4) + '0';
 }
 else {
      LcdBuffer[LcdRow][LcdCol ++] = (ch >> 4) - 10 + 'A';
 }
 if ((ch & 0x0f) < 0x0a) {
      LcdBuffer[LcdRow][LcdCol ++] = (ch & 0x0f) + '0';
 }
 else {
      LcdBuffer[LcdRow][LcdCol ++] = (ch & 0x0f) - 10 + 'A';
 }
  }
}


UartObj::UartObj(void)
{
  UartInit();
}


void UartObj::UartInit(void)
{
  Start = false;//还未进行自适应
  Count = 0;
  PRDREG = 0;
  RxCount = 0;
  Status = 0;
  RWCount = 0;
  RRCount = 0;
}


unsigned int UartObj::TestBio(void)
{
unsigned int PortBIO = 0;//BIO引脚为低电平
  asm(" bc __TestBio__1,BIO");
  PortBIO = 0x200;//BIO引脚为高电平
  asm("__TestBio__1");
  return PortBIO;
}


void UartObj::UartExec(void)
{
unsigned long timerH, timerL, timer;
  if (!Start) {//波特率测试
    TIMER1->TCR |= (1 << TCR_TSS);//关闭定时器1
    TIMER1->TIM = TIMER1->PRD;
    TIMER1->TCR &= ~(1 << TCR_TSS);//启动定时器1
    SREG->IFR = (1 << IFR_TINT1);//清除TINT1中断标志
    while(!(SREG->IFR & (1 << IFR_TINT1))) {
      if (TestBio()) {//等待BIO上跳
        TIMER1->TCR |= (1 << TCR_TSS);//关闭定时器1
        PRDREG = TIMER1->PRD - TIMER1->TIM;//存时间基准
        timer = (unsigned long)(PRDREG);
        TIMER1->TIM = TIMER1->PRD;//0xffff
        TIMER1->TCR &= ~(1 << TCR_TSS);//启动定时器1
        SREG->IFR = (1 << IFR_TINT1);//清除TINT1中断标志
        timerH =0L;
        while(TestBio()) {
          if (SREG->IFR & (1 << IFR_TINT1)) {
            TIMER1->TCR |= (1 << TCR_TSS);//关闭定时器1
            timerH += 0xffff;
            TIMER1->TIM = TIMER1->PRD;
            TIMER1->TCR &= ~(1 << TCR_TSS);//启动定时器1
            SREG->IFR = (1 << IFR_TINT1);//清除TINT1中断标志
            if (timerH >= (6 * timer + (6 * timer * 3 / 100))) return;//高电平太宽(6.5)
          }
        }
        TIMER1->TCR |= (1 << TCR_TSS);//关闭定时器1
        timerH += TIMER1->PRD - TIMER1->TIM;
        TIMER1->TIM = TIMER1->PRD;//0xffff
        TIMER1->TCR &= ~(1 << TCR_TSS);//启动定时器1
        if (timerH >= (6 * timer + (6 * timer * 3 / 100))) return;//高电平太宽(6.5)
        if (timerH <= (6 * timer - (6 * timer * 3 / 100))) return;//高电平太宽(5.5)
        timerL = 0;
        while(!TestBio()) {
          if (SREG->IFR & (1 << IFR_TINT1)) {
            TIMER1->TCR |= (1 << TCR_TSS);//关闭定时器1
            timerL += 0xffff;
            TIMER1->TIM = TIMER1->PRD;
            TIMER1->TCR &= ~(1 << TCR_TSS);//启动定时器1
            SREG->IFR = (1 << IFR_TINT1);//清除TINT1中断标志
            if (timerL >= (2 * timer + (2 * timer * 3 / 100))) return;//高电平太宽(2.5)
          }
        }
        TIMER1->TCR |= (1 << TCR_TSS);//关闭定时器1
        timerL += TIMER1->PRD - TIMER1->TIM;
        TIMER1->TIM = TIMER1->PRD;//0xffff
        TIMER1->TCR &= ~(1 << TCR_TSS);//启动定时器1
        if (timerL >= (2 * timer + (2 * timer * 3 / 100))) return;//高电平太宽(2.5)
        if (timerL <= (2 * timer - (2 * timer * 3 / 100))) return;//高电平太宽(1.5)
        TIMER1->PRD = timerH / 6;
        Count = 0;
        Status = 0;
        RxCount = 0;
        RWCount = 0;
        RRCount = 0;
        Start = true;
      }
    }
  }
  else {
    TIMER1->TCR |= (1 << TCR_TSS);//关闭定时器1
    TIMER1->TIM = TIMER1->PRD / 2;//起始位为1/2，其它位为1/1
    TIMER1->TCR &= ~(1 << TCR_TSS);//启动定时器1
    SREG->IFR = (1 << IFR_TINT1);//清除TINT1中断标志
    SREG->IMR &= ~(1 << IMR_INT0);//禁止INT0中断 
    SREG->IMR |= (1 << IMR_TINT1);//允许TINT1中断
    Status |= ((unsigned int)1 << Uart_BUSY);
    Count = 0;//从起始位开始
  }
}


void UartObj::UartRecExec(void)
{
  Count ++;//接收到1位起始位或数据或停止位，计数进行节拍管理。
  DDRX >>= 1;//右移串行数据位
  DDRX |= TestBio();//取串口接收数据位
  if (Count >= (8 + 2)) {//串口数据位最后位停止位
    if (((DDRX & (1 << BIT0)) == 0) && (DDRX & (1 << BIT9))) {//接收够8位数据
      DDR = (DDRX >> 1) & 0xff;//去除起始位和终止位后截取8位数据
      RxBuff[RWCount] = DDR;//写入接收FIFO.
      RWCount ++;//指向下1位数据
      RWCount &= 0x3f;//64个字节
      RxCount ++;//接收字节个数计数
      if (RxCount > 64) {
        Status |= (1 << Uart_OE);//数据溢出，覆盖了FIFO
      }
      else {
        Status &= ~(1 << Uart_OE);//数据未溢出
      }
      Status |= (1 << Uart_RDR);//FIFO里有数据
    }
    TIMER1->TCR |= (1 << TCR_TSS);//关闭定时器1
    SREG->IMR &= ~(1 << IMR_TINT1);//禁止TINT1中断
    SREG->IMR |= (1 << IMR_INT0);//允许INT0中断
    SREG->IFR = (1 << IFR_INT0);//清除INT0中断标志
    Status &= ~(1 << Uart_BUSY);//串口闲
  }
}


unsigned char UartObj::Getchar(void)
{
unsigned char ch;
  while (!(Uart.Status & (1 << Uart_RDR)));//等待接收缓冲区有数据
  Disable();//关中断
  ch = RxBuff[RRCount];//取串口数据
  RRCount ++;//指向下1位数据
  RRCount &= 0x3f;//64个字节
  RxCount --;
  if (RxCount == 0) {
    Uart.Status &= ~(1 << Uart_RDR);//FIFO里已无数据
  }
  Enable();//开中断
  return ch;//返回接收数据
}


int main(void)
{
unsigned char ch;
  Enable();//开中断
  Lcd.SetLcdDisplayPos(0, 0);
  while(1)
  {
    if (::IOXF) {
      SREG->ST1 |= (1 << ST1_XF);
    }
    else {
      SREG->ST1 &= ~(1 << ST1_XF);
    }
//    idle();
    ch = Uart.Getchar();
    if (ch >= ' ') {
      Lcd.LcdDisplay(ch);
    }
  }
}


interrupt void Timer0Isr() {
static int count = 0;
static unsigned int ledcount = 0;
//char str[17];
  count ++;
  if (count >= 500) {
    count = 0;
//    Lcd.SetLcdDisplayPos(0, 0);
// std::sprintf(str, "ledcount=%04X  ", ledcount >> 2);//注意std::
//    Lcd.LcdDisplay("ledcount=");
//    Lcd.LcdDisplay(ledcount >> 2);
    Lcd.LcdDisplayBuffer();//刷新LCD显示缓冲区
/*   
    Lcd.SetLcdDisplayPos(3, 0);
    if ((ledcount & 0x03) == 0) {
      Lcd.LcdDisplay("12345678");
      Lcd.SetLcdDisplayPos(3, 8);
      Lcd.LcdDisplay("我晕倒了");
    }
    else {
      Lcd.LcdDisplay("你在倒塌");
      Lcd.SetLcdDisplayPos(3, 8);
      Lcd.LcdDisplay("87654321");
    }
*/   
    ::IOXF = !::IOXF;//郁闷~~~中断中ST1被保护~~~
    ledcount ++;
  }
}


interrupt void Timer1Isr() {//串口Uart的软时?
  Uart.UartRecExec();
  SREG->IFR = (1 << IFR_TINT1);//清除TINT1中断标志
}


interrupt void Eint0Isr() {
  Uart.UartExec();
  SREG->IFR = (1 << IFR_INT0);//清除INT0中断标志
}


interrupt void Eint1Isr() {
//  Lcd.SetLcdDisplayPos(2, 0);
//  Lcd.LcdDisplay("欢迎INT1中断观光");
  SREG->IFR = (1 << IFR_INT1);//清除INT1中断标志
}


interrupt void Eint2Isr() {
//  Lcd.SetLcdDisplayPos(2, 0);
//  Lcd.LcdDisplay("欢迎INT2中断观光");
  SREG->IFR = (1 << IFR_INT2);//清除INT2中断标志
}


interrupt void Eint3Isr() {
//  Lcd.SetLcdDisplayPos(2, 0);
//  Lcd.LcdDisplay("欢迎INT3中断观光");
  SREG->IFR = (1 << IFR_INT3);//清除INT3中断标志
}


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回复 liu1234 2009-9-30 06:43
user1/1453/archives/2009/62698.html 不用定时器测量