[参考译文] TMS320F28.0021万：ADC的PIE中断和ADCINT1/ADCINT2问题

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https://e2e.ti.com/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/1093211/tms320f280021-the-pie-interrupt-of-adc-and-adcint1-adcint2-issue

部件号：TMS320F28.0021万

大家好，

以下是客户提出的一些问题可能需要您的帮助：

使用2800X系列的ADC中断时：

2800x系列有四个中断：ADCINT1，ADCINT2，ADCINT3，ADCINT4。

1.使用ADCINT1中断时，执行了以下3项测试：

a.使用 PIE中断向量表的ADCA1作为中断项时，中断程序工作正常， LED_FLASH引脚翻转时间：17.2us，80次。

PieVectTable.ADCA1_INT  = &adc_A1ISR;     // Function for ADCA interrupt 1

IER |= M_INT1;//T0 ADCINT1

PieCtrlRegs.PIEIER1.bit.INTx1 = 1;// ADCINT1


EPwm1Regs.ETSEL.bit.SOCAEN = 0;     // Disable SOC on A group
EPwm1Regs.ETSEL.bit.SOCASEL = 3;    // Select SOC on up-count
EPwm1Regs.ETPS.bit.SOCAPRD = 1;     // Generate pulse on 1st event

EPwm1Regs.CMPA.bit.CMPA = 430;   // Set compare A value to 2048 counts
EPwm1Regs.TBPRD = 862;           // Set period to 4096 counts

EPwm1Regs.TBCTL.bit.CTRMODE = 3;    // Freeze counter

AdcaRegs.ADCSOC0CTL.bit.CHSEL = 7;     // SOC0 will convert pin A1
                                           // 0:A0  1:A1  2:A2  3:A3
                                           // 4:A4   5:A5   6:A6   7:A7
                                           // 8:A8   9:A9   A:A10  B:A11
                                           // C:A12  D:A13  E:A14  F:A15
AdcaRegs.ADCSOC0CTL.bit.ACQPS = 9;     // Sample window is 10 SYSCLK cycles
AdcaRegs.ADCSOC0CTL.bit.TRIGSEL = 5;   // Trigger on ePWM1 SOCA

AdcaRegs.ADCINTSEL1N2.bit.INT1SEL = 0; // End of SOC1 will set INT1 flag
AdcaRegs.ADCINTSEL1N2.bit.INT1E = 1;   // Enable INT1 flag
AdcaRegs.ADCINTSEL1N2.bit.INT1CONT = 0;       //Discontinuous 
AdcaRegs.ADCINTFLGCLR.bit.ADCINT1 = 1; // Make sure INT1 flag is cleared

The timer function starts the ePWM conversion for 25 ms 
EPwm1Regs.ETSEL.bit.SOCAEN  = 1;        // Enable SOC on A group
EPwm1Regs.TBCTL.bit.CTRMODE = 0;   // Unfreeze, and enter up count mode

ADC1 interrupt function
__interrupt void adc_A1ISR(void)
{
    LED_FLASH=1;

    Current.Sum+=AdcaResultRegs.ADCRESULT1;
    if(++Current.ConversionCount==80)
    {
        Current.ConversionCount=0;
        Current.Data=(Current.Sum/80);
        Current.Sum=0;

        EALLOW;
        EPwm1Regs.ETSEL.bit.SOCAEN  = 0;        // Enable SOC on A group
        EPwm1Regs.TBCTL.bit.CTRMODE = 3;   // Unfreeze, and enter up count mode
        EDIS;
    }
    //
    // Clear the interrupt flag
    //
    AdcaRegs.ADCINTFLGCLR.bit.ADCINT1 = 1;

    //
    // Check if overflow has occurred
    //
    if(1 == AdcaRegs.ADCINTOVF.bit.ADCINT1)
    {
        AdcaRegs.ADCINTOVFCLR.bit.ADCINT1 = 1; //clear INT1 overflow flag
        AdcaRegs.ADCINTFLGCLR.bit.ADCINT1 = 1; //clear INT1 flag
    }

    //
    // Acknowledge the interrupt
    //
    PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;

}

b. 使用PIE中断向量表的ADCC1作为中断项时，中断程序不运行，并且不能输入中断。

PieVectTable.ADCC1_INT  = &adc_C1ISR;     // Function for ADCC interrupt 1

IER |= M_INT1;//T0 ADCINT1

PieCtrlRegs.PIEIER1.bit.INTx3 = 1;// ADCINT1

EPwm1Regs.ETSEL.bit.SOCAEN = 0;     // Disable SOC on A group
EPwm1Regs.ETSEL.bit.SOCASEL = 3;    // Select SOC on up-count
EPwm1Regs.ETPS.bit.SOCAPRD = 1;     // Generate pulse on 1st event

EPwm1Regs.CMPA.bit.CMPA = 430;   // Set compare A value to 2048 counts
EPwm1Regs.TBPRD = 862;           // Set period to 4096 counts

EPwm1Regs.TBCTL.bit.CTRMODE = 3;    // Freeze counter

AdcaRegs.ADCSOC0CTL.bit.CHSEL = 7;     // SOC0 will convert pin A1
                                           // 0:A0  1:A1  2:A2  3:A3
                                           // 4:A4   5:A5   6:A6   7:A7
                                           // 8:A8   9:A9   A:A10  B:A11
                                           // C:A12  D:A13  E:A14  F:A15
AdcaRegs.ADCSOC0CTL.bit.ACQPS = 9;     // Sample window is 10 SYSCLK cycles
AdcaRegs.ADCSOC0CTL.bit.TRIGSEL = 5;   // Trigger on ePWM1 SOCA

AdcaRegs.ADCINTSEL1N2.bit.INT1SEL = 0; // End of SOC1 will set INT1 flag
AdcaRegs.ADCINTSEL1N2.bit.INT1E = 1;   // Enable INT1 flag
AdcaRegs.ADCINTSEL1N2.bit.INT1CONT = 0;       //discontinous
AdcaRegs.ADCINTFLGCLR.bit.ADCINT1 = 1; // Make sure INT1 flag is cleared

The timer function starts the ePWM conversion for 25 ms 
EPwm1Regs.ETSEL.bit.SOCAEN  = 1;        // Enable SOC on A group
EPwm1Regs.TBCTL.bit.CTRMODE = 0;   // Unfreeze, and enter up count mode

ADC1 interrupt function
__interrupt void adc_C1ISR(void)
{
    LED_FLASH=1;

    Current.Sum+=AdcaResultRegs.ADCRESULT1;
    if(++Current.ConversionCount==80)
    {
        Current.ConversionCount=0;
        Current.Data=(Current.Sum/80);
        Current.Sum=0;

        EALLOW;
        EPwm1Regs.ETSEL.bit.SOCAEN  = 0;        // Enable SOC on A group
        EPwm1Regs.TBCTL.bit.CTRMODE = 3;   // Unfreeze, and enter up count mode
        EDIS;
    }
    //
    // Clear the interrupt flag
    //
    AdcaRegs.ADCINTFLGCLR.bit.ADCINT1 = 1;

    //
    // Check if overflow has occurred
    //
    if(1 == AdcaRegs.ADCINTOVF.bit.ADCINT1)
    {
        AdcaRegs.ADCINTOVFCLR.bit.ADCINT1 = 1; //clear INT1 overflow flag
        AdcaRegs.ADCINTFLGCLR.bit.ADCINT1 = 1; //clear INT1 flag
    }

    //
    // Acknowledge the interrupt
    //
    PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;

}

c. 使用PIE中断向量表的ADCA2作为中断项时，中断程序不运行，并且不能输入中断。

PieVectTable.ADCA2_INT  = &adc_A2ISR;     // Function for ADCA interrupt 1

IER |= M_INT10; //ADCINT1

PieCtrlRegs.PIEIER10.bit.INTx2 = 1;// ADCINT1

EPwm1Regs.ETSEL.bit.SOCAEN = 0;     // Disable SOC on A group
EPwm1Regs.ETSEL.bit.SOCASEL = 3;    // Select SOC on up-count
EPwm1Regs.ETPS.bit.SOCAPRD = 1;     // Generate pulse on 1st event

EPwm1Regs.CMPA.bit.CMPA = 430;   // Set compare A value to 2048 counts
EPwm1Regs.TBPRD = 862;           // Set period to 4096 counts

EPwm1Regs.TBCTL.bit.CTRMODE = 3;    // Freeze counter

AdcaRegs.ADCSOC0CTL.bit.CHSEL = 7;     // SOC0 will convert pin A1
                                           // 0:A0  1:A1  2:A2  3:A3
                                           // 4:A4   5:A5   6:A6   7:A7
                                           // 8:A8   9:A9   A:A10  B:A11
                                           // C:A12  D:A13  E:A14  F:A15
AdcaRegs.ADCSOC0CTL.bit.ACQPS = 9;     // Sample window is 10 SYSCLK cycles
AdcaRegs.ADCSOC0CTL.bit.TRIGSEL = 5;   // Trigger on ePWM1 SOCA

AdcaRegs.ADCINTSEL1N2.bit.INT1SEL = 0; // End of SOC1 will set INT1 flag
AdcaRegs.ADCINTSEL1N2.bit.INT1E = 1;   // Enable INT1 flag
AdcaRegs.ADCINTSEL1N2.bit.INT1CONT = 0;       //discontinous
AdcaRegs.ADCINTFLGCLR.bit.ADCINT1 = 1; // Make sure INT1 flag is cleared

The timer function starts the ePWM conversion for 25 ms 
EPwm1Regs.ETSEL.bit.SOCAEN  = 1;        // Enable SOC on A group
EPwm1Regs.TBCTL.bit.CTRMODE = 0;   // Unfreeze, and enter up count mode

ADC1 interrupt function
__interrupt void adc_A2ISR(void)
{
    LED_FLASH=1;

    Current.Sum+=AdcaResultRegs.ADCRESULT1;
    if(++Current.ConversionCount==80)
    {
        Current.ConversionCount=0;
        Current.Data=(Current.Sum/80);
        Current.Sum=0;

        EALLOW;
        EPwm1Regs.ETSEL.bit.SOCAEN  = 0;        // Enable SOC on A group
        EPwm1Regs.TBCTL.bit.CTRMODE = 3;   // Unfreeze, and enter up count mode
        EDIS;
    }
    //
    // Clear the interrupt flag
    //
    AdcaRegs.ADCINTFLGCLR.bit.ADCINT1 = 1;

    //
    // Check if overflow has occurred
    //
    if(1 == AdcaRegs.ADCINTOVF.bit.ADCINT1)
    {
        AdcaRegs.ADCINTOVFCLR.bit.ADCINT1 = 1; //clear INT1 overflow flag
        AdcaRegs.ADCINTFLGCLR.bit.ADCINT1 = 1; //clear INT1 flag
    }

    //
    // Acknowledge the interrupt
    //
    PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;

}

2.使用 ADCINT2中断时，执行了以下两项测试：

答当使用PIE中断向量表的ADCA1作为中断项时，中断程序不运行，并且不能输入中断。

PieVectTable.ADCA1_INT  = &adc_A1ISR;     // Function for ADCA interrupt 1

IER |= M_INT1;//T0 ADCINT1

PieCtrlRegs.PIEIER1.bit.INTx1 = 1;// ADCINT1


EPwm1Regs.ETSEL.bit.SOCAEN = 0;     // Disable SOC on A group
EPwm1Regs.ETSEL.bit.SOCASEL = 3;    // Select SOC on up-count
EPwm1Regs.ETPS.bit.SOCAPRD = 1;     // Generate pulse on 1st event

EPwm1Regs.CMPA.bit.CMPA = 430;   // Set compare A value to 2048 counts
EPwm1Regs.TBPRD = 862;           // Set period to 4096 counts

EPwm1Regs.TBCTL.bit.CTRMODE = 3;    // Freeze counter

AdcaRegs.ADCSOC0CTL.bit.CHSEL = 7;     // SOC0 will convert pin A1
                                           // 0:A0  1:A1  2:A2  3:A3
                                           // 4:A4   5:A5   6:A6   7:A7
                                           // 8:A8   9:A9   A:A10  B:A11
                                           // C:A12  D:A13  E:A14  F:A15
AdcaRegs.ADCSOC0CTL.bit.ACQPS = 9;     // Sample window is 10 SYSCLK cycles
AdcaRegs.ADCSOC0CTL.bit.TRIGSEL = 5;   // Trigger on ePWM1 SOCA

AdcaRegs.ADCINTSEL1N2.bit.INT2SEL = 0; // End of SOC1 will set INT2 flag
AdcaRegs.ADCINTSEL1N2.bit.INT2E = 1;   // Enable INT1 flag
AdcaRegs.ADCINTSEL1N2.bit.INT2CONT = 0;       //discontinous
AdcaRegs.ADCINTFLGCLR.bit.ADC2NT1 = 1; // Make sure INT2 flag is cleared

The timer function starts the ePWM conversion for 25 ms 
EPwm1Regs.ETSEL.bit.SOCAEN  = 1;        // Enable SOC on A group
EPwm1Regs.TBCTL.bit.CTRMODE = 0;   // Unfreeze, and enter up count mode

ADC1 interrupt function
__interrupt void adc_A1ISR(void)
{
    LED_FLASH=1;

    Current.Sum+=AdcaResultRegs.ADCRESULT1;
    if(++Current.ConversionCount==80)
    {
        Current.ConversionCount=0;
        Current.Data=(Current.Sum/80);
        Current.Sum=0;

        EALLOW;
        EPwm1Regs.ETSEL.bit.SOCAEN  = 0;        // Enable SOC on A group
        EPwm1Regs.TBCTL.bit.CTRMODE = 3;   // Unfreeze, and enter up count mode
        EDIS;
    }
    //
    // Clear the interrupt flag
    //
    AdcaRegs.ADCINTFLGCLR.bit.ADCINT2 = 1;

    //
    // Check if overflow has occurred
    //
    if(1 == AdcaRegs.ADCINTOVF.bit.ADCINT2)
    {
        AdcaRegs.ADCINTOVFCLR.bit.ADCINT2 = 1; //clear INT2 overflow flag
        AdcaRegs.ADCINTFLGCLR.bit.ADCINT2 = 1; //clear INT2 flag
    }

    //
    // Acknowledge the interrupt
    //
    PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;

}

B. 使用PIE中断向量表的ADCA2作为中断项时，中断程序可以运行，但结果不正确：LED_FLASH引脚翻转20毫秒(设置了17.2us)：

PieVectTable.ADCA2_INT  = &adc_A2ISR;     // Function for ADCA interrupt 1

IER |= M_INT10; //ADCINT1

PieCtrlRegs.PIEIER10.bit.INTx2 = 1;// ADCINT1

EPwm1Regs.ETSEL.bit.SOCAEN = 0;     // Disable SOC on A group
EPwm1Regs.ETSEL.bit.SOCASEL = 3;    // Select SOC on up-count
EPwm1Regs.ETPS.bit.SOCAPRD = 1;     // Generate pulse on 1st event

EPwm1Regs.CMPA.bit.CMPA = 430;   // Set compare A value to 2048 counts
EPwm1Regs.TBPRD = 862;           // Set period to 4096 counts

EPwm1Regs.TBCTL.bit.CTRMODE = 3;    // Freeze counter

AdcaRegs.ADCSOC0CTL.bit.CHSEL = 7;     // SOC0 will convert pin A1
                                           // 0:A0  1:A1  2:A2  3:A3
                                           // 4:A4   5:A5   6:A6   7:A7
                                           // 8:A8   9:A9   A:A10  B:A11
                                           // C:A12  D:A13  E:A14  F:A15
AdcaRegs.ADCSOC0CTL.bit.ACQPS = 9;     // Sample window is 10 SYSCLK cycles
AdcaRegs.ADCSOC0CTL.bit.TRIGSEL = 5;   // Trigger on ePWM1 SOCA

AdcaRegs.ADCINTSEL1N2.bit.INT2SEL = 0; // End of SOC1 will set INT2 flag
AdcaRegs.ADCINTSEL1N2.bit.INT2E = 1;   // Enable INT2 flag
AdcaRegs.ADCINTSEL1N2.bit.INT2CONT = 0;       //discontinous
AdcaRegs.ADCINTFLGCLR.bit.ADCINT2 = 1; // Make sure INT1 flag is cleared

The timer function starts the ePWM conversion for 25 ms 
EPwm1Regs.ETSEL.bit.SOCAEN  = 1;        // Enable SOC on A group
EPwm1Regs.TBCTL.bit.CTRMODE = 0;   // Unfreeze, and enter up count mode

ADC1 interrupt function
__interrupt void adc_A2ISR(void)
{
    LED_FLASH=1;

    Current.Sum+=AdcaResultRegs.ADCRESULT1;
    if(++Current.ConversionCount==80)
    {
        Current.ConversionCount=0;
        Current.Data=(Current.Sum/80);
        Current.Sum=0;

        EALLOW;
        EPwm1Regs.ETSEL.bit.SOCAEN  = 0;        // Enable SOC on A group
        EPwm1Regs.TBCTL.bit.CTRMODE = 3;   // Unfreeze, and enter up count mode
        EDIS;
    }
    //
    // Clear the interrupt flag
    //
    AdcaRegs.ADCINTFLGCLR.bit.ADCINT2 = 1;

    //
    // Check if overflow has occurred
    //
    if(1 == AdcaRegs.ADCINTOVF.bit.ADCINT2)
    {
        AdcaRegs.ADCINTOVFCLR.bit.ADCINT2 = 1; //clear INT1 overflow flag
        AdcaRegs.ADCINTFLGCLR.bit.ADCINT2 = 1; //clear INT1 flag
    }

    //
    // Acknowledge the interrupt
    //
    PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;

}

问题：

1) 如何将中断程序配置为与上述测试1C正常工作？

2)如何将中断程序配置为与上面的测试2a一样正常运行？

3)如何将中断程序配置为与上面的测试2b一样正常运行？中断当前可用，但无法正常工作。

您可以帮助检查此问题吗？谢谢。

此致，

樱桃

3 年多前

0 admin 3 年多前

TI__Guru**** 2538940 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。

您好，

在1B中，尽管已配置ADCC1是中断，但未配置ADCC，因此不会生成ADCC1中断。

在1 C中，未设置ADCINT2的EOC触发器

AdcaRegs.ADCINTSEL1N2.bit.INT1SEL = 0；// SOC1结束时将设置INT1标志
AdcaRegs.ADCINTSEL1N2.bit.INT1E = 1；//启用INT1标志
AdcaRegs.ADCINTSEL1N2.bit.INT1CONT = 0；//失禁
AdcaRegs.ADCINTFLGCLL.bit.ADCINT1 =1；//确保INT1标志已清除

谢谢
Vasudha

0 admin 3 年多前

TI__Guru**** 2538940 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。

你好，Vasudha，

感谢你的帮助。

使用ADCINT3的PIE中断为ADCA3，ADCINT4的PIE中断为ADCA4测试。但是与ADCINT2对应的PIE中断是ADCA2，中断转换时间异常：总是20毫秒，但使用ADCINT1的PIE中断是ADCA1，这是正常的。

EPwm1Regs.ETSEL.bit.SOCAEN = 0；//禁用组上的SOC
EPwm1Regs.ETSEL.bit.SOCASEL = 3；//在加电计数时选择SOC
EPwm1Regs.ETPS.bit.SOCAPRD = 1；//在第一个事件上生成脉冲

EPwm1Regs.CMPA.bit.CMPA = 430；// set将值与2048个计数进行比较
EPwm1Regs.TBPRD = 862；//将周期设置为4096个计数

剂量ePWM触发器需要专门配置？

谢谢，此致，

樱桃

0 admin 3 年多前

TI__Guru**** 2538940 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。

樱桃，

Tomm第十五届是美国和印度C2000团队的假期。请在星期一结束前收到下一封邮件。

最佳，

Matthew

0 admin 3 年多前

TI__Guru**** 2538940 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。

Matthew，您好！

感谢您的消息，此问题已由客户解决。再次感谢您的帮助！

谢谢，此致，

樱桃

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[参考译文] TMS320F28.0021万：ADC的PIE中断和ADCINT1/ADCINT2问题