麻烦大家帮我下，很简单的问题！

只看该作者 · 2013-12-30 23:04

想用定时器控制电机旋转时间，按照论坛里给的例程定义了
void InitEPwm1(uint32_t num1)
{
      InitEPwm1Gpio();
      EPwm1Regs.TBPRD = 6000;                      // Set timer period
      EPwm1Regs.TBPHS.half.TBPHS = 0x0000;          // Phase is 0
      EPwm1Regs.TBCTR = 0x0000;                      // Clear counter

      // Setup TBCLK
      EPwm1Regs.TBCTL.bit.CTRMODE = TB_COUNT_UP;             // Count up
      EPwm1Regs.TBCTL.bit.PHSEN = TB_DISABLE;       // Disable phase loading
      EPwm1Regs.TBCTL.bit.PRDLD                = TB_SHADOW;       // loaded from its shadow register
      EPwm1Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;    // Clock ratio to SYSCLKOUT
      EPwm1Regs.TBCTL.bit.CLKDIV = TB_DIV1;

      EPwm1Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW; // Load registers every ZERO
      EPwm1Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
      EPwm1Regs.CMPCTL.bit.LOADAMODE = CC_CTR_ZERO;
      EPwm1Regs.CMPCTL.bit.LOADBMODE = CC_CTR_ZERO;

      // Setup compare
      EPwm1Regs.CMPA.half.CMPA = num1;

      // Set actions
      EPwm1Regs.AQCTLA.bit.CAU = AQ_SET;          // Set PWM1A on Zero
      EPwm1Regs.AQCTLA.bit.PRD = AQ_SET;

      EPwm1Regs.AQCTLB.bit.CAU = AQ_CLEAR;       // Set PWM1A on Zero
      EPwm1Regs.AQCTLB.bit.PRD = AQ_SET;

      // 触发ADC SOC
      //EPwm1Regs.ETSEL.bit.SOCAEN = 1;
}
之后在Main()中定义了全局变量
extern uint32_t num01;
InitEPwm1(num01);
并且利用定时器一
在定时器一种引用extern uint32_t num01;；
interrupt void INT13_ISR(void)    // INT13 or CPU-Timer1
{
      CpuTimer1.InterruptCount++;
      if(CpuTimer1.InterruptCount>50000)
      {
            num01=2000;
      }
      else {
            num01=0;
      }
但是老实出错，请大家帮我看看该怎么改好吗？

只看该作者 · 2013-12-30 23:04

麻烦大家帮我下

麻烦大家帮我下，很简单的问题！

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