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[新手园地] ddllxxrr笔记十二 群灯乱舞

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 楼主| ddllxxrr 发表于 2011-10-14 09:56 | 显示全部楼层 |阅读模式
TI, timer, TE, tc, rc
这次程序是上个笔记的延续
这个是TIME四个定时器一起启动，每个控制一个LED，看上去木有规率，其实是有规率地
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  1.  
    

  2. *---------------------------------------------------------------------------------------------------------*/
    

  3. #include <stdio.h>
    

  4. /*---------------------------------------------------------------------------------------------------------*/
    

  5. /*  Include hear file                                                                       */
    

  6. /*---------------------------------------------------------------------------------------------------------*/
    

  7. #include "NUC1xx.h"
    

  8. /*----------------------------------------------------------------------------
    

  9.   Define variable
    

  10.   ----------------------------------------------------------------------------*/
    

  11.  static uint32_t TimerCOUN=0;
    

  12.  static uint32_t TimerCOUN1=0;
    

  13.  static uint32_t TimerCOUN2=0;
    

  14.  static uint32_t TimerCOUN3=0;
    

  15.  
    

  16. /*----------------------------------------------------------------------------
    

  17.   Function subroutine
    

  18.   ----------------------------------------------------------------------------*/
    

  19. void Delay(uint32_t delayCnt)
    

  20. {
    

  21.     while(delayCnt--)
    

  22.     {
    

  23.         __NOP();
    

  24.         __NOP();
    

  25.     }
    

  26. }
    

  27. uint32_t GetTDR(void)
    

  28. {
    

  29.  return  TIMER0->TDR;
    

  30. }
    

  31. uint32_t GetTDR1(void)
    

  32. {
    

  33.  return  TIMER1->TDR;
    

  34. }
    

  35. uint32_t GetTDR2(void)
    

  36. {
    

  37.  return  TIMER2->TDR;
    

  38. }
    

  39. uint32_t GetTDR3(void)
    

  40. {
    

  41.  return  TIMER3->TDR;
    

  42. }
    

  43. /*----------------------------------------------------------------------------
    

  44.   Interrupt subroutine
    

  45.   ----------------------------------------------------------------------------*/
    

  46. void TMR0_IRQHandler(void) // Timer0 interrupt subroutine 
    

  47. {
    

  48.   TIMER0->TISR.TIF =1; 
    

  49.  TimerCOUN++;
    

  50.      
    

  51. }
    

  52. void TMR1_IRQHandler(void) // Timer1 interrupt subroutine 
    

  53. {
    

  54.   TIMER1->TISR.TIF =1; 
    

  55.  TimerCOUN1++;
    

  56.      
    

  57. }
    

  58. void TMR2_IRQHandler(void) // Timer2 interrupt subroutine 
    

  59. {
    

  60.   TIMER2->TISR.TIF =1; 
    

  61.  TimerCOUN2++;
    

  62.     
    

  63. }
    

  64. void TMR3_IRQHandler(void) // Timer3 interrupt subroutine 
    

  65. {
    

  66.   TIMER3->TISR.TIF =1; 
    

  67.  TimerCOUN3++;
    

  68.      
    

  69. }
    

  70. /*----------------------------------------------------------------------------
    

  71.   MAIN function
    

  72.   ----------------------------------------------------------------------------*/
    

  73. int32_t main (void)
    

  74. {
    

  75.  //unsigned int TEMP;
    

  76.  //uint32_t TEMP;
    

  77.  GPIOA->PMD.PMD2=1; //分别设连接LED管脚为，IO模式
    

  78.     GPIOA->PMD.PMD3=1;
    

  79.     GPIOA->PMD.PMD4=1;
    

  80.     GPIOA->PMD.PMD5=1;
    

  81.  NVIC_DisableIRQ(TMR0_IRQn); //Disable Timer0 interrupt
    

  82.  outpw(&TIMER0->TCSR ,0 ); //Disable Timer0//清Timer0的中断标志                              
    

  83.  /* Step 1. Enable and Select Timer clock source */          
    

  84.  SYSCLK->CLKSEL1.TMR0_S = 4; //Select 22Mhz for Timer0 clock source 
    

  85.     SYSCLK->APBCLK.TMR0_EN =1; //Enable Timer0 clock source
    

  86.  /* Step 2. Select Operation mode */ 
    

  87.  TIMER0->TCSR.MODE=1;  //定时器工作在周期模式.当中断使能时，
    

  88.  //一旦定时器计数器的值(24位递增计数器)等于比较寄存器（TCMPR）的值，
    

  89.  //就会触发定时器中断。
    

  90.  /* Step 3. Select Time out period = (Period of timer clock input) * (8-bit Prescale + 1) * (24-bit TCMP)*/
    

  91.  TIMER0->TCSR.PRESCALE=0; // Set Prescale [0~255]
    

  92.  TIMER0->TCMPR= 2765;//TICR = 2765;  // Set TICR(TCMP) [0~16777215]
    

  93.         // (1/22118400)*(0+1)*(2765)= 125.01usec or 7999.42Hz
    

  94.  /* Step 4. Enable interrupt */
    

  95.  TIMER0->TCSR.IE = 1;
    

  96.  TIMER0->TISR.TIF = 1;  //Write 1 to clear for safty  
    

  97.  NVIC_EnableIRQ(TMR0_IRQn); //Enable Timer0 Interrupt
    

  98.  /* Step 5. Enable Timer module */
    

  99.  TIMER0->TCSR.CRST = 1;  //Reset up counter
    

  100.  TIMER0->TCSR.CEN = 1;  //Enable Timer0
    

  101.    TIMER0->TCSR.TDR_EN=1;  // Enable TDR function
    

  102.     //以下是TIMER1的设置
    

  103.   /* Step 1. Enable and Select Timer clock source */          
    

  104.  SYSCLK->CLKSEL1.TMR1_S = 4; //Select 22Mhz for Timer0 clock source 
    

  105.     SYSCLK->APBCLK.TMR1_EN =1; //Enable Timer0 clock source
    

  106.   
    

  107.   /* Step 2. Select Operation mode */ 
    

  108.  TIMER1->TCSR.MODE=1;  //定时器工作在周期模式.当中断使能时，
    

  109.  //一旦定时器计数器的值(24位递增计数器)等于比较寄存器（TCMPR）的值，
    

  110.  //就会触发定时器中断。
    

  111.  /* Step 3. Select Time out period = (Period of timer clock input) * (8-bit Prescale + 1) * (24-bit TCMP)*/
    

  112.  TIMER1->TCSR.PRESCALE=20; // Set Prescale [0~255]
    

  113.  TIMER1->TCMPR= 2765;//TICR = 2765;  // Set TICR(TCMP) [0~16777215]
    

  114.         // (1/22118400)*(0+1)*(2765)= 125.01usec or 7999.42Hz
    

  115.  /* Step 4. Enable interrupt */
    

  116.  TIMER1->TCSR.IE = 1;
    

  117.  TIMER1->TISR.TIF = 1;  //Write 1 to clear for safty  
    

  118.  NVIC_EnableIRQ(TMR1_IRQn); //Enable Timer0 Interrupt
    

  119.  /* Step 5. Enable Timer module */
    

  120.  TIMER1->TCSR.CRST = 1;  //Reset up counter
    

  121.  TIMER1->TCSR.CEN = 1;  //Enable Timer0
    

  122.    TIMER1->TCSR.TDR_EN=1;  // Enable TDR function
    

  123.      //以下设TIMER2的设置
    

  124.   /* Step 1. Enable and Select Timer clock source */          
    

  125.  SYSCLK->CLKSEL1.TMR2_S = 4; //Select 22Mhz for Timer0 clock source 
    

  126.     SYSCLK->APBCLK.TMR2_EN =1; //Enable Timer0 clock source
    

  127.    /* Step 2. Select Operation mode */ 
    

  128.  TIMER2->TCSR.MODE=1;  //定时器工作在周期模式.当中断使能时，
    

  129.  //一旦定时器计数器的值(24位递增计数器)等于比较寄存器（TCMPR）的值，
    

  130.  //就会触发定时器中断。
    

  131.  /* Step 3. Select Time out period = (Period of timer clock input) * (8-bit Prescale + 1) * (24-bit TCMP)*/
    

  132.  TIMER2->TCSR.PRESCALE=10; // Set Prescale [0~255]
    

  133.  TIMER2->TCMPR= 2765;//TICR = 2765;  // Set TICR(TCMP) [0~16777215]
    

  134.         // (1/22118400)*(0+1)*(2765)= 125.01usec or 7999.42Hz
    

  135.  /* Step 4. Enable interrupt */
    

  136.  TIMER2->TCSR.IE = 1;
    

  137.  TIMER2->TISR.TIF = 1;  //Write 1 to clear for safty  
    

  138.  NVIC_EnableIRQ(TMR2_IRQn); //Enable Timer0 Interrupt
    

  139.  /* Step 5. Enable Timer module */
    

  140.  TIMER2->TCSR.CRST = 1;  //Reset up counter
    

  141.  TIMER2->TCSR.CEN = 1;  //Enable Timer0
    

  142.    TIMER2->TCSR.TDR_EN=1;  // Enable TDR function
    

  143.      //以下设TIMER3的设置
    

  144.   /* Step 1. Enable and Select Timer clock source */          
    

  145.  SYSCLK->CLKSEL1.TMR3_S = 4; //Select 22Mhz for Timer0 clock source 
    

  146.     SYSCLK->APBCLK.TMR3_EN =1; //Enable Timer0 clock source
    

  147.    /* Step 2. Select Operation mode */ 
    

  148.  TIMER3->TCSR.MODE=1;  //定时器工作在周期模式.当中断使能时，
    

  149.  //一旦定时器计数器的值(24位递增计数器)等于比较寄存器（TCMPR）的值，
    

  150.  //就会触发定时器中断。
    

  151.  /* Step 3. Select Time out period = (Period of timer clock input) * (8-bit Prescale + 1) * (24-bit TCMP)*/
    

  152.  TIMER3->TCSR.PRESCALE=2; // Set Prescale [0~255]
    

  153.  TIMER3->TCMPR= 2765;//TICR = 2765;  // Set TICR(TCMP) [0~16777215]
    

  154.         // (1/22118400)*(0+1)*(2765)= 125.01usec or 7999.42Hz
    

  155.  /* Step 4. Enable interrupt */
    

  156.  TIMER3->TCSR.IE = 1;
    

  157.  TIMER3->TISR.TIF = 1;  //Write 1 to clear for safty  
    

  158.  NVIC_EnableIRQ(TMR3_IRQn); //Enable Timer0 Interrupt
    

  159.  /* Step 5. Enable Timer module */
    

  160.  TIMER3->TCSR.CRST = 1;  //Reset up counter
    

  161.  TIMER3->TCSR.CEN = 1;  //Enable Timer0
    

  162.    TIMER3->TCSR.TDR_EN=1;  // Enable TDR function 
    


  163. 

  164.  while(1)
    

  165.  {
    

  166.   Delay(10);
    

  167.   //TEMP = GetTDR();  //Get value of up counter
    

  168.   if (TimerCOUN>1000)
    

  169.   {
    

  170.   GPIOA->DOUT ^= BIT2; 
    

  171.   TimerCOUN=0;
    

  172.   }
    

  173.   //TEMP1 = GetTDR1();  //Get value of up counter
    

  174.   if (TimerCOUN1>1000)
    

  175.   {
    

  176.   GPIOA->DOUT ^= BIT3; 
    

  177.   TimerCOUN1=0;
    

  178.   }
    

  179.   //TEMP2 = GetTDR2();  //Get value of up counter
    

  180.   if (TimerCOUN2>1000)
    

  181.   {
    

  182.   GPIOA->DOUT ^= BIT4; 
    

  183.   TimerCOUN2=0;
    

  184.   }
    

  185.   //TEMP3 = GetTDR3();  //Get value of up counter
    

  186.   if (TimerCOUN3>1000)
    

  187.   {
    

  188.   GPIOA->DOUT ^= BIT5; 
    

  189.   TimerCOUN3=0;
    

  190.   }
    

  191.  }
    


  192. 

  193. }
    

  194.  
    

  195. 程序打包：
    

  196.  
    

  197.



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hotpower 发表于 2011-10-14 10:51 | 显示全部楼层
奢侈呀！好像look的四个任务。
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