[参考译文] TMS320F28379D：ADC 寄存器值不合适

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请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

https://e2e.ti.com/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/1474404/tms320f28379d-adc-register-value-is-not-appropriate

器件型号：TMS320F28379D
主题中讨论的其他器件：SysConfig

工具与软件：

您好！

我正在尝试使用28379D 控制卡读取 ADC 值。输入电流通过传感器传输到 ADC 引脚、并且我已将代码配置为相应地读取值。

在调试窗口中、 ADCBRESULT5 和 ADCBRESULT4 固定在大约15xx (未施加电流时)。但是、有时会计算出的值 ADCBRESULT5 - ADCBRESULT4 尖峰达到65000、从而导致依赖于电流测量的控制器不稳定。

随附的屏幕截图是在控制器关闭时从调试窗口中获取的。该屏幕截图所示 ADCRESULT5 、 ADCRESULT4 和两个值之间的差异。

下面是 ADC 设置。

我正在使用中 ADCA1至 ADCA5 和 ADCB1至 ADCB5 、当前问题发生在上 ADCB5 和 ADCB4 .

void setupADCSOC(void)
{

    EALLOW;
//ADCA

   AdcaRegs.ADCSOC0CTL.bit.CHSEL = 0;     // SOC0(=ADCA0)
   AdcaRegs.ADCSOC0CTL.bit.ACQPS = 9;     // Sample window is 10 SYSCLK cycles
   AdcaRegs.ADCSOC0CTL.bit.TRIGSEL = 1;   // Trigger on CPUTIMER0


   AdcaRegs.ADCSOC1CTL.bit.CHSEL = 1;     // SOC1(=ADCA1)
   AdcaRegs.ADCSOC1CTL.bit.ACQPS = 9;     // Sample window is 10 SYSCLK cycles
   AdcaRegs.ADCSOC1CTL.bit.TRIGSEL = 1;   // Trigger on CPUTIMER0
//
   AdcaRegs.ADCSOC2CTL.bit.CHSEL = 2;     // SOC2(=ADCA2)
   AdcaRegs.ADCSOC2CTL.bit.ACQPS = 9;     // Sample window is 10 SYSCLK cycles
   AdcaRegs.ADCSOC2CTL.bit.TRIGSEL = 1;   // Trigger on CPUTIMER0

   AdcaRegs.ADCSOC3CTL.bit.CHSEL = 3;     // SOC3(=ADCA3)
   AdcaRegs.ADCSOC3CTL.bit.ACQPS = 9;     // Sample window is 10 SYSCLK cycles
   AdcaRegs.ADCSOC3CTL.bit.TRIGSEL = 1;   // Trigger on CPUTIMER0


   AdcaRegs.ADCSOC4CTL.bit.CHSEL = 4;     // SOC4(=ADCA4)
   AdcaRegs.ADCSOC4CTL.bit.ACQPS = 9;     // Sample window is 10 SYSCLK cycles
   AdcaRegs.ADCSOC4CTL.bit.TRIGSEL = 1;   // Trigger on CPUTIMER0


   AdcaRegs.ADCSOC5CTL.bit.CHSEL = 5;     // SOC5(=ADCA5)
   AdcaRegs.ADCSOC5CTL.bit.ACQPS = 9;     // Sample window is 10 SYSCLK cycles
   AdcaRegs.ADCSOC5CTL.bit.TRIGSEL = 1;   // Trigger on CPUTIMER0

   AdcaRegs.ADCINTSEL1N2.bit.INT1SEL = 5; // End of SOC5 will set INT1 flag
   AdcaRegs.ADCINTSEL1N2.bit.INT1E = 1; // Enable INT1 flag
   AdcaRegs.ADCINTFLGCLR.bit.ADCINT1 = 1; // Make sure INT1 flag is cleared

   //ADCB

   AdcbRegs.ADCSOC0CTL.bit.CHSEL = 0;  // SOC0(=ADCB0)
   AdcbRegs.ADCSOC0CTL.bit.ACQPS = 9;     // Sample window is 10 SYSCLK cycles
   AdcbRegs.ADCSOC0CTL.bit.TRIGSEL = 1;   // Trigger on CPUTIMER0

   AdcbRegs.ADCSOC1CTL.bit.CHSEL = 1;     //  SOC1(=ADCB1)
   AdcbRegs.ADCSOC1CTL.bit.ACQPS = 9;     // Sample window is 10 SYSCLK cycles
   AdcbRegs.ADCSOC1CTL.bit.TRIGSEL = 1;   // Trigger on CPUTIMER0

   AdcbRegs.ADCSOC2CTL.bit.CHSEL = 2;     //  SOC2(=ADCB2)
   AdcbRegs.ADCSOC2CTL.bit.ACQPS = 9;     // Sample window is 10 SYSCLK cycles
   AdcbRegs.ADCSOC2CTL.bit.TRIGSEL = 1;   // Trigger on CPUTIMER0

   AdcbRegs.ADCSOC3CTL.bit.CHSEL = 3;     //  SOC3(=ADCB3)
   AdcbRegs.ADCSOC3CTL.bit.ACQPS = 9;     // Sample window is 10 SYSCLK cycles
   AdcbRegs.ADCSOC3CTL.bit.TRIGSEL = 1;   // Trigger on CPUTIMER0

   AdcbRegs.ADCSOC4CTL.bit.CHSEL = 4;     //  SOC4(=ADCB4)
   AdcbRegs.ADCSOC4CTL.bit.ACQPS = 9;     // Sample window is 10 SYSCLK cycles
   AdcbRegs.ADCSOC4CTL.bit.TRIGSEL = 1;   // Trigger on CPUTIMER0

   AdcbRegs.ADCSOC5CTL.bit.CHSEL = 5;     //  SOC5(=ADCB5)
   AdcbRegs.ADCSOC5CTL.bit.ACQPS = 9;     // Sample window is 10 SYSCLK cycles
   AdcbRegs.ADCSOC5CTL.bit.TRIGSEL = 1;   // Trigger on CPUTIMER0

   //AdcbRegs.ADCINTSEL1N2.bit.INT1SEL = 0; // End of SOC5 will set INT1 flag
  // AdcbRegs.ADCINTSEL1N2.bit.INT1E = 1; // Enable INT1 flag
   //AdcbRegs.ADCINTFLGCLR.bit.ADCINT1 = 1; // Make sure INT1 flag is cleared


   EDIS;
}

9 个月前

0 admin 8 个月前

TI__Guru**** 2467850 points

请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

伊恩津、

要解决该问题、我需要完整的代码。您是否向 ADC 引脚施加直流电压以进行测试和验证？您如何为主控件中的 ADC 设置 SoC？

我建议使用 SysConfig 工具自动生成所需的图形初始化。稍后您可以直接将其复制到您的代码中。

此致！

Masoud。

0 admin 8 个月前

TI__Guru**** 2467850 points

请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

void setupADC(void)
{

//single ended

   AdcSetMode(ADC_ADCA, ADC_RESOLUTION_12BIT, ADC_SIGNALMODE_SINGLE);
   AdcSetMode(ADC_ADCB, ADC_RESOLUTION_12BIT, ADC_SIGNALMODE_SINGLE);

    EALLOW;
//ADCA


    AdcaRegs.ADCCTL2.bit.PRESCALE = 1;


    AdcaRegs.ADCCTL1.bit.INTPULSEPOS = 1; //EOC --> 인터럽트 신호 발생

    AdcaRegs.ADCCTL1.bit.ADCPWDNZ = 1; //ADC모듈 활성화

//ADCB
    AdcbRegs.ADCCTL2.bit.PRESCALE = 1;

    AdcbRegs.ADCCTL1.bit.INTPULSEPOS = 1; //EOC --> 인터럽트 신호 발생

    AdcbRegs.ADCCTL1.bit.ADCPWDNZ = 1; //ADC모듈 활성화

    EDIS;

    DELAY_US(1000);
}

void setupADCSOC(void)
{

    EALLOW;
//ADCA

   AdcaRegs.ADCSOC0CTL.bit.CHSEL = 0;     // SOC0(=ADCA0)
   AdcaRegs.ADCSOC0CTL.bit.ACQPS = 9;     // Sample window is 10 SYSCLK cycles
   AdcaRegs.ADCSOC0CTL.bit.TRIGSEL = 1;   // Trigger on CPUTIMER0


   AdcaRegs.ADCSOC1CTL.bit.CHSEL = 1;     // SOC1(=ADCA1)
   AdcaRegs.ADCSOC1CTL.bit.ACQPS = 9;     // Sample window is 10 SYSCLK cycles
   AdcaRegs.ADCSOC1CTL.bit.TRIGSEL = 1;   // Trigger on CPUTIMER0
//
   AdcaRegs.ADCSOC2CTL.bit.CHSEL = 2;     // SOC2(=ADCA2)
   AdcaRegs.ADCSOC2CTL.bit.ACQPS = 9;     // Sample window is 10 SYSCLK cycles
   AdcaRegs.ADCSOC2CTL.bit.TRIGSEL = 1;   // Trigger on CPUTIMER0

   AdcaRegs.ADCSOC3CTL.bit.CHSEL = 3;     // SOC3(=ADCA3)
   AdcaRegs.ADCSOC3CTL.bit.ACQPS = 9;     // Sample window is 10 SYSCLK cycles
   AdcaRegs.ADCSOC3CTL.bit.TRIGSEL = 1;   // Trigger on CPUTIMER0


   AdcaRegs.ADCSOC4CTL.bit.CHSEL = 4;     // SOC4(=ADCA4)
   AdcaRegs.ADCSOC4CTL.bit.ACQPS = 9;     // Sample window is 10 SYSCLK cycles
   AdcaRegs.ADCSOC4CTL.bit.TRIGSEL = 1;   // Trigger on CPUTIMER0


   AdcaRegs.ADCSOC5CTL.bit.CHSEL = 5;     // SOC5(=ADCA5)
   AdcaRegs.ADCSOC5CTL.bit.ACQPS = 9;     // Sample window is 10 SYSCLK cycles
   AdcaRegs.ADCSOC5CTL.bit.TRIGSEL = 1;   // Trigger on CPUTIMER0

   AdcaRegs.ADCINTSEL1N2.bit.INT1SEL = 5; // End of SOC5 will set INT1 flag
   AdcaRegs.ADCINTSEL1N2.bit.INT1E = 1; // Enable INT1 flag
   AdcaRegs.ADCINTFLGCLR.bit.ADCINT1 = 1; // Make sure INT1 flag is cleared

   //ADCB

   AdcbRegs.ADCSOC0CTL.bit.CHSEL = 0;  // SOC0(=ADCB0)
   AdcbRegs.ADCSOC0CTL.bit.ACQPS = 9;     // Sample window is 10 SYSCLK cycles
   AdcbRegs.ADCSOC0CTL.bit.TRIGSEL = 1;   // Trigger on CPUTIMER0

   AdcbRegs.ADCSOC1CTL.bit.CHSEL = 1;     //  SOC1(=ADCB1)
   AdcbRegs.ADCSOC1CTL.bit.ACQPS = 9;     // Sample window is 10 SYSCLK cycles
   AdcbRegs.ADCSOC1CTL.bit.TRIGSEL = 1;   // Trigger on CPUTIMER0

   AdcbRegs.ADCSOC2CTL.bit.CHSEL = 2;     //  SOC2(=ADCB2)
   AdcbRegs.ADCSOC2CTL.bit.ACQPS = 9;     // Sample window is 10 SYSCLK cycles
   AdcbRegs.ADCSOC2CTL.bit.TRIGSEL = 1;   // Trigger on CPUTIMER0

   AdcbRegs.ADCSOC3CTL.bit.CHSEL = 3;     //  SOC3(=ADCB3)
   AdcbRegs.ADCSOC3CTL.bit.ACQPS = 9;     // Sample window is 10 SYSCLK cycles
   AdcbRegs.ADCSOC3CTL.bit.TRIGSEL = 1;   // Trigger on CPUTIMER0

   AdcbRegs.ADCSOC4CTL.bit.CHSEL = 4;     //  SOC4(=ADCB4)
   AdcbRegs.ADCSOC4CTL.bit.ACQPS = 9;     // Sample window is 10 SYSCLK cycles
   AdcbRegs.ADCSOC4CTL.bit.TRIGSEL = 1;   // Trigger on CPUTIMER0

   AdcbRegs.ADCSOC5CTL.bit.CHSEL = 5;     //  SOC5(=ADCB5)
   AdcbRegs.ADCSOC5CTL.bit.ACQPS = 9;     // Sample window is 10 SYSCLK cycles
   AdcbRegs.ADCSOC5CTL.bit.TRIGSEL = 1;   // Trigger on CPUTIMER0

   //AdcbRegs.ADCINTSEL1N2.bit.INT1SEL = 0; // End of SOC5 will set INT1 flag
  // AdcbRegs.ADCINTSEL1N2.bit.INT1E = 1; // Enable INT1 flag
   //AdcbRegs.ADCINTFLGCLR.bit.ADCINT1 = 1; // Make sure INT1 flag is cleared


   EDIS;
}

在操作转换器时观察 ADC 值时、读数会波动、如上图所示。

C2000™︎ 微控制器（参考译文帖）

C2000™︎ 微控制器（参考译文帖）(Read Only)

[参考译文] TMS320F28379D：ADC 寄存器值不合适