f5529 呼吸灯（三角波）

我写的程序有问题：可以做出呼吸灯（用PWM），但是总会莫名地闪。另外请问有没有三角波和正弦波的程序？我想参考一下。以下是我的程序
#include <msp430.h>

void inittime(void)//12MHz
{
  volatile unsigned int i;
  UCSCTL3 |= SELREF_2;                      // Set DCO FLL reference = REFO
  UCSCTL4 |= SELA_2;                        // Set ACLK = REFO

  __bis_SR_register(SCG0);                  // Disable the FLL control loop
  UCSCTL0 = 0x0000;                         // Set lowest possible DCOx, MODx
  UCSCTL1 = DCORSEL_5;                      // Select DCO range 24MHz operation
  UCSCTL2 = FLLD_1 + 374;                   // Set DCO Multiplier for 12MHz
                                            // (N + 1) * FLLRef = Fdco
                                            // (374 + 1) * 32768 = 12MHz
                                            // Set FLL Div = fDCOCLK/2
  __bic_SR_register(SCG0);                  // Enable the FLL control loop

  // Worst-case settling time for the DCO when the DCO range bits have been
  // changed is n x 32 x 32 x f_MCLK / f_FLL_reference. See UCS chapter in 5xx
  // UG for optimization.
  // 32 x 32 x 12 MHz / 32,768 Hz = 375000 = MCLK cycles for DCO to settle
  __delay_cycles(375000);
    
  // Loop until XT1,XT2 & DCO fault flag is cleared
  do
  {
    UCSCTL7 &= ~(XT2OFFG + XT1LFOFFG + DCOFFG);
                                            // Clear XT2,XT1,DCO fault flags
    SFRIFG1 &= ~OFIFG;                      // Clear fault flags
  }while (SFRIFG1&OFIFG);                   // Test oscillator fault flag
}




void delay1s(int a)//12MHz
{
  int i,j;
  for(i = a*1000; i >=1; i--)
    for(j = 2996; j >= 1; j--);
}


void delay1ms(int a)//12MHz
{
  int j;
  for(a = a; a >=1; a--)
    for(j = 2996; j >= 1; j--);
}


int main(void)
{
  WDTCTL = WDTPW + WDTHOLD;                 // Stop WDT
  inittime();
  int one;
  P1DIR |= BIT2+BIT3;                       // P1.2 and P1.3 output
  P1SEL |= BIT2+BIT3;                       // P1.2 and P1.3 options select
  TA0CCR0 = 512-1;                          // PWM Period
  TA0CCTL1 = OUTMOD_7;                      // CCR1 reset/set
  TA0CCR1 = 384;                            // CCR1 PWM duty cycle
  TA0CCTL2 = OUTMOD_7;                      // CCR2 reset/set
  TA0CCR2 = 20;                            // CCR2 PWM duty cycle
  TA0CTL = TASSEL_1 + MC_1 + TACLR;         // ACLK, up mode, clear TAR
  while(1)
  {
    for(one = 400; one >= 0; one -= 5)
    {
      TA0CCR1 = one;                            // CCR1 PWM duty cycle
      delay1ms(10);
    }
    
    
    for(one = 0; one <= 400; one += 5)
    {
      TA0CCR1 = one;                            // CCR1 PWM duty cycle
      delay1ms(10);//while(1);
    }
    
  }
}

亲；啥情况下会闪？你的电路是啥样的？