ADC12序列通道单次转换问题

只看该作者 · 2018-1-30 16:01

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

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 · 2018-1-30 16:38

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 · 2018-1-30 16:53

是那个的问题么

只看该作者 · 2018-1-30 17:05

仅作参考
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 · 2018-1-30 17:17

试一下序列通道多次转换吧

只看该作者 · 2018-1-30 17:31

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

只看该作者 · 2018-2-2 21:20

ADC10CTL0 / ADC10CTL1 后面的赋值把前面的覆盖了吧

只看该作者 · 2018-2-2 21:21

ADC10CTL0 = ADC10ON + ADC10SHT_2 + MSC + ADC10IE; //打开内核,采样保持时间，中断允许

2万 · 2018-2-2 21:22

DC12MCTL0 = INCH_0;                   // ref+=AVcc, channel = A0
  ADC12MCTL1 = INCH_1+EOS;          // ref+=AVcc, channel = A1, end seq.
  ADC12IE = 0x02;                                     // Enable ADC12IFG.1

1万 · 2018-2-2 21:22

_ENIT();才进入中断

2万 · 2018-2-2 21:23

WDTCTL = WDTPW+WDTHOLD; // Stop watchdog timer
P6SEL = 0x0F; // Enable A/D channel inputs
ADC12CTL0 = ADC12ON+MSC+SHT0_8; // Turn on ADC12, extend sampling time
// to avoid overflow of results
ADC12CTL1 = SHP+CONSEQ_3; // Use sampling timer, repeated sequence
ADC12MCTL0 = INCH_0; // ref+=AVcc, channel = A0
ADC12MCTL1 = INCH_1; // ref+=AVcc, channel = A1
ADC12MCTL2 = INCH_2; // ref+=AVcc, channel = A2
ADC12MCTL3 = INCH_3+EOS; // ref+=AVcc, channel = A3, end seq.
ADC12IE = 0x08; // Enable ADC12IFG.3
ADC12CTL0 |= ENC; // Enable conversions
ADC12CTL0 |= ADC12SC; // Start conversion
_BIS_SR(LPM0_bits + GIE); // Enter LPM0, Enable interrupts

只看该作者 · 2018-2-2 21:26

使用与或非配置

只看该作者 · 2018-2-2 21:26

ADC10CTL0 = SREF_4 + REFON;

2万 · 2018-2-2 21:26

DC的中断向量 #pragma vector=ADC12_VECTOR

1万 · 2018-2-2 21:26

ENIT是开启中断

2万 · 2018-2-2 21:26

#pragma vector=ADC12_VECTOR
__interrupt void ADC12ISR (void)
{
static unsigned int index = 0;

A0results[index] = ADC12MEM0; // Move A0 results, IFG is cleared
A1results[index] = ADC12MEM1; // Move A1 results, IFG is cleared
A2results[index] = ADC12MEM2; // Move A2 results, IFG is cleared
A3results[index] = ADC12MEM3; // Move A3 results, IFG is cleared
index = (index+1)%Num_of_Results; // Increment results index, modulo; Set Breakpoint here
}

只看该作者 · 2018-2-17 21:53

这个哪个芯片？

1万 · 2018-2-17 21:54

#include <msp430.h>

int main(void)
{
  WDTCTL = WDTPW + WDTHOLD;                // Stop WDT
  ADC12CTL0 = ADC12SHT02 + ADC12ON;       // Sampling time, ADC12 on
  ADC12CTL1 = ADC12SHP;                   // Use sampling timer
  ADC12IE = 0x01;                         // Enable interrupt
  ADC12CTL0 |= ADC12ENC;
  P6SEL |= 0x01;                         // P6.0 ADC option select
  P1DIR |= 0x01;                         // P1.0 output

  while (1)
  {
ADC12CTL0 |= ADC12SC;                // Start sampling/conversion

__bis_SR_register(LPM0_bits + GIE);    // LPM0, ADC12_ISR will force exit
__no_operation();                      // For debugger
  }
}

#pragma vector = ADC12_VECTOR
__interrupt void ADC12_ISR(void)
{
  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:                               // Vector  6:  ADC12IFG0
if (ADC12MEM0 >= 0x7ff)                // ADC12MEM = A0 > 0.5AVcc?
   P1OUT |= BIT0;                      // P1.0 = 1
else
   P1OUT &= ~BIT0;                      // P1.0 = 0

__bic_SR_register_on_exit(LPM0_bits); // Exit active CPU
  case  8: break;                         // Vector  8:  ADC12IFG1
  case 10: break;                         // Vector 10:  ADC12IFG2
  case 12: break;                         // Vector 12:  ADC12IFG3
  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;
  }
}

2万 · 2018-2-17 21:54

ADC12CTL0 = ADC12SHT02 + ADC12ON;       // Sampling time, ADC12 on
ADC12CTL1 = ADC12SHP;                   // Use sampling timer
ADC12IE = 0x01;                         // Enable interrupt
ADC12CTL0 |= ADC12ENC;

ADC12CTL0 |= ADC12SC;                // Start sampling/conversion