ADC12序列通道单次转换中断服务程序进不去

只看该作者 · 2017-8-29 17:04

这是做的一个F5529的ADC12的一个程序，调试了很多次，中断一次也进不去，求大神帮忙看一下问题出在呢谢谢谢谢谢

void SCA60C_init(void)
{

ADC12CTL0 = ADC12SHT02 + ADC12ON; // 打开ADC12设置采样间隔
ADC12CTL1 = ADC12SHP+ADC12CONSEQ_1; // 采样保持出发信号选择采样定时器序列通道单次转换
ADC12MCTL0 = ADC12INCH_6; // 模拟输入通道选择通道A6
ADC12MCTL1 = ADC12INCH_7+ADC12EOS; // 模拟输入通道选择通道A7
ADC12CTL0 |= ADC12ENC; // 使能转换
ADC_PORT_SEL |= 0xff; //ADC选择 P6.6 P6.7作为输入（A6）（A7）
ADC12IE = 0x08;
}
uint16_t *SCA60C_getValue(void)
{
ADC12CTL0 |= ADC12SC; // Start sampling/conversion开始采样转换
__bis_SR_register(LPM4_bits+GIE); // ADC12_ISR will force exit进入LPM4并全局中断调试到这里就发现下一步没有进入中断而是直接继续执行
///////省略若干代码}

////中断服务程序
#pragma vector = ADC12_VECTOR
__interrupt void ADC12_ISR(void)
{
switch (__even_in_range(ADC12IV, ADC12IV_ADC12IFG15))
{
………………
case ADC12IV_ADC12IFG3:
positionData[0] = ADC12MEM0; // 读取转换结果
positionData[1] = ADC12MEM1; // 读取转换结果
__bic_SR_register_on_exit(LPM4_bits); // Exit active CPU退出低功耗唤醒CPU
break;
…………
default:
break;
}
}

只看该作者 · 2017-8-29 17:19

中断向量指向错误了把，你只用了ad0和ad1，应该进ifg1

只看该作者 · 2017-8-29 17:32

void ADC12()
{

  P6SEL = 0x0F;                            // Enable A/D channel inputs

  ADC12CTL0 = ADC12ON+ADC12MSC+ADC12SHT0_15; // Turn on ADC12, extend sampling time
                                          // to avoid overflow of results
  ADC12CTL1 = ADC12SHP+ADC12CONSEQ_3;    // Use sampling timer, repeated sequence
  ADC12MCTL0 = ADC12INCH_0;                // ref+=AVcc, channel = A0
  ADC12MCTL1 = ADC12INCH_1+ADC12EOS;                // ref+=AVcc, channel = A1
  //ADC12MCTL2 = ADC12INCH_2+ADC12EOS;                // ref+=AVcc, channel = A2
  //ADC12MCTL3 = ADC12INCH_3+ADC12EOS;       // ref+=AVcc, channel = A3, end seq.
  ADC12IE = 0x02;                         // Enable ADC12IFG.2
  ADC12CTL0 |= ADC12ENC;                   // Enable conversions
  ADC12CTL0 |= ADC12SC;                   // Start convn - software trigger

}
#pragma vector=ADC12_VECTOR
__interrupt void ADC12ISR(void)
{
  static unsigned int index = 0;
  u16 c;
  switch(__even_in_range(ADC12IV,34))
  {
  case  0: break;                         // Vector  0:  No interrupt
  case  2: break;                         // Vector  2:  ADC overflow
  case  4: break;                         // Vector  4:  ADC timing overflow
  case  6: break;                         // Vector  6:  ADC12IFG0
  case  10: break;                         // Vector  8:  ADC12IFG2
  case 12: break;                         // Vector 10:  ADC12IFG3
  case 8:                               // Vector 12:  ADC12IFG1
A0results[index] = ADC12MEM0;          // Move A0 results, IFG is cleared
A1results[index] = ADC12MEM1;          // Move A1 results, IFG is cleared
...
  case 14: break;                         // Vector 14:  ADC12IFG4
  case 16: break;                         // Vector 16:  ADC12IFG5
  case 18: break;                         // Vector 18:  ADC12IFG6
  case 20: break;                         // Vector 20:  ADC12IFG7
  case 22: break;                         // Vector 22:  ADC12IFG8
  case 24: break;                         // Vector 24:  ADC12IFG9
  case 26: break;                         // Vector 26:  ADC12IFG10
  case 28: break;                         // Vector 28:  ADC12IFG11
  case 30: break;                         // Vector 30:  ADC12IFG12
  case 32: break;                         // Vector 32:  ADC12IFG13
  case 34: break;                         // Vector 34:  ADC12IFG14
  default: break;
  }
}

只看该作者 · 2017-8-29 17:48

我基本也是碰到这个问题，中断是可以进去，因为你可以看到数据采集的结果已经存入定义的变量中了，但是问题在于中断中的退出低功耗函数没有被执行，CPUOFF标志位一直=1

ADC12序列通道单次转换中断服务程序进不去

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