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28035 ADC用软件直接触发的问题

2012-03-15 分类：C2000™ 32位实时 MCU 阅读(277)

各位好，

我想使用软件触发ADC进行连续采样，但是我将.ADCSOCFRC1位置1后，在WATCH WINDOW中看.ADCSOCFRC1仍然是0,，

因此ADC也没有正确工作，希望各位看下代码帮我找找原因，谢谢。

————————————————————————————————

void main()
{
// Step 1. Initialize System Control:
// PLL, WatchDog, enable Peripheral Clocks
// This example function is found in the DSP2833x_SysCtrl.c file.
InitSysCtrl();

// Step 2. Initalize GPIO:// This example function is found in the DSP2833x_Gpio.c file and
// illustrates how to set the GPIO to it's default state.
// InitGpio();  // Skipped for this example
 // Step 3. Clear all interrupts and initialize PIE vector table:
// Disable CPU interruptsDINT;
InitEPwm6Gpio();
// Initialize PIE control registers to their default state.
// The default state is all PIE interrupts disabled and flags
// are cleared. // This function is found in the DSP2833x_PieCtrl.c file.
InitPieCtrl();

// Disable CPU interrupts and clear all CPU interrupt flags:
IER = 0x0000;
IFR = 0x0000;
InitPieVectTable();
// Interrupts that are used in this example are re-mapped to
// ISR functions found within this file.
EALLOW;  // This is needed to write to EALLOW protected register
PieVectTable.ADCINT1 = &adc_isr;
// Enable ADCINT1 in PIE
PieCtrlRegs.PIEIER1.bit.INTx1 = 1;	// Enable INT 1.1 in the PIE
EDIS;// This is needed to disable write to EALLOW protected registers

// Step 4. Initialize all the Device Peripherals:
// This function is found in DSP2803x_InitPeripherals.c
// InitPeripherals(); // Not required for this example
InitAdc();  // For this example, init the ADC
InitEPwm6();	

// Step 5. User specific code, enable interrupts:
IER |= M_INT1; 						// Enable CPU Interrupt 1
EINT;						// Enable Global interrupt INTM
ERTM;						// Enable Global realtime interrupt DBGM

LoopCount = 0;
ConversionCount = 0;

for(i=0;i<512;i++)
{
		SampleTable[ConversionCount] = 0;
		ConversionCount++;
}
ConversionCount = 0;

Adc_Config();
//Force start of conversion on SOC0
EALLOW;
AdcRegs.ADCSOCFRC1.all = 0x03;
EDIS;

for(;;)
{
		asm("NOP");


}
}
interrupt void adc_isr(void)
{
	//Wait for end of conversion.
while(AdcRegs.ADCINTFLG.bit.ADCINT1 == 0){}  //Wait for ADCINT1
AdcRegs.ADCINTFLGCLR.bit.ADCINT1 = 1;//Clear ADCINT1

  	SampleTable[ConversionCount] = AdcResult.ADCRESULT0;
   // If 512 conversions have been logged, start over
 	if(ConversionCount == 512)
  	{
	ConversionCount = 0;
 	}
  	else ConversionCount++;

  	AdcRegs.ADCINTFLGCLR.bit.ADCINT1 = 1;		//Clear ADCINT1 flag reinitialize for next SOC
  	PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;// Acknowledge interrupt to PIE

  	return;
}
void Adc_Config()
{
	// Configure ADC
	EALLOW;
	AdcRegs.ADCCTL1.bit.INTPULSEPOS	= 1;	//ADCINT1 trips after AdcResults latch
	AdcRegs.INTSEL1N2.bit.INT1E= 1;	//Enabled ADCINT1
	AdcRegs.INTSEL1N2.bit.INT1CONT  = 0;	//Disable ADCINT1 Continuous mode
	AdcRegs.INTSEL1N2.bit.INT1SEL	= 1;	//setup EOC1 to trigger ADCINT1 to fire
	AdcRegs.ADCSOC0CTL.bit.CHSEL 	= 7;	//set SOC0 channel select to ADCINA7
	AdcRegs.ADCSOC1CTL.bit.CHSEL 	= 7;	//set SOC1 channel select to ADCINA7
	AdcRegs.ADCSOC0CTL.bit.TRIGSEL 	= 0;	//set SOC0 start trigger on software
	AdcRegs.ADCSOC1CTL.bit.TRIGSEL 	= 0;	//set SOC1 start trigger on software
 	AdcRegs.ADCSOC0CTL.bit.ACQPS 	= 6;	//set SOC0 S/H Window to 7 ADC Clock Cycles, (6 ACQPS plus 1)
	AdcRegs.ADCSOC1CTL.bit.ACQPS 	= 6;	//set SOC0 S/H Window to 7 ADC Clock Cycles, (6 ACQPS plus 1)
	AdcRegs.ADCINTSOCSEL1.bit.SOC0  = 1;	//ADCINT1 will trigger SOC0. TRIGSEL field is ignored.
	AdcRegs.ADCINTSOCSEL1.bit.SOC1  = 1;	//ADCINT1 will trigger SOC0. TRIGSEL field is ignored.
	EDIS;
}
——————————————————————————————————————————————————————


谢谢各位了。

ChongWen Zhao：

回复 Forrest:

谢谢您，果然OK了。

另外多说一句，为了避免28035本身的问题，建议在使用软件触发时将两个SOC一起设置，如程序中所示，否则有可能还是开启不了ADC

各位好，

我想使用软件触发ADC进行连续采样，但是我将.ADCSOCFRC1位置1后，在WATCH WINDOW中看.ADCSOCFRC1仍然是0,，

因此ADC也没有正确工作，希望各位看下代码帮我找找原因，谢谢。

————————————————————————————————

void main()
{
// Step 1. Initialize System Control:
// PLL, WatchDog, enable Peripheral Clocks
// This example function is found in the DSP2833x_SysCtrl.c file.
InitSysCtrl();

// Step 2. Initalize GPIO:// This example function is found in the DSP2833x_Gpio.c file and
// illustrates how to set the GPIO to it's default state.
// InitGpio();  // Skipped for this example
 // Step 3. Clear all interrupts and initialize PIE vector table:
// Disable CPU interruptsDINT;
InitEPwm6Gpio();
// Initialize PIE control registers to their default state.
// The default state is all PIE interrupts disabled and flags
// are cleared. // This function is found in the DSP2833x_PieCtrl.c file.
InitPieCtrl();

// Disable CPU interrupts and clear all CPU interrupt flags:
IER = 0x0000;
IFR = 0x0000;
InitPieVectTable();
// Interrupts that are used in this example are re-mapped to
// ISR functions found within this file.
EALLOW;  // This is needed to write to EALLOW protected register
PieVectTable.ADCINT1 = &adc_isr;
// Enable ADCINT1 in PIE
PieCtrlRegs.PIEIER1.bit.INTx1 = 1;	// Enable INT 1.1 in the PIE
EDIS;// This is needed to disable write to EALLOW protected registers

// Step 4. Initialize all the Device Peripherals:
// This function is found in DSP2803x_InitPeripherals.c
// InitPeripherals(); // Not required for this example
InitAdc();  // For this example, init the ADC
InitEPwm6();	

// Step 5. User specific code, enable interrupts:
IER |= M_INT1; 						// Enable CPU Interrupt 1
EINT;						// Enable Global interrupt INTM
ERTM;						// Enable Global realtime interrupt DBGM

LoopCount = 0;
ConversionCount = 0;

for(i=0;i<512;i++)
{
		SampleTable[ConversionCount] = 0;
		ConversionCount++;
}
ConversionCount = 0;

Adc_Config();
//Force start of conversion on SOC0
EALLOW;
AdcRegs.ADCSOCFRC1.all = 0x03;
EDIS;

for(;;)
{
		asm("NOP");


}
}
interrupt void adc_isr(void)
{
	//Wait for end of conversion.
while(AdcRegs.ADCINTFLG.bit.ADCINT1 == 0){}  //Wait for ADCINT1
AdcRegs.ADCINTFLGCLR.bit.ADCINT1 = 1;//Clear ADCINT1

  	SampleTable[ConversionCount] = AdcResult.ADCRESULT0;
   // If 512 conversions have been logged, start over
 	if(ConversionCount == 512)
  	{
	ConversionCount = 0;
 	}
  	else ConversionCount++;

  	AdcRegs.ADCINTFLGCLR.bit.ADCINT1 = 1;		//Clear ADCINT1 flag reinitialize for next SOC
  	PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;// Acknowledge interrupt to PIE

  	return;
}
void Adc_Config()
{
	// Configure ADC
	EALLOW;
	AdcRegs.ADCCTL1.bit.INTPULSEPOS	= 1;	//ADCINT1 trips after AdcResults latch
	AdcRegs.INTSEL1N2.bit.INT1E= 1;	//Enabled ADCINT1
	AdcRegs.INTSEL1N2.bit.INT1CONT  = 0;	//Disable ADCINT1 Continuous mode
	AdcRegs.INTSEL1N2.bit.INT1SEL	= 1;	//setup EOC1 to trigger ADCINT1 to fire
	AdcRegs.ADCSOC0CTL.bit.CHSEL 	= 7;	//set SOC0 channel select to ADCINA7
	AdcRegs.ADCSOC1CTL.bit.CHSEL 	= 7;	//set SOC1 channel select to ADCINA7
	AdcRegs.ADCSOC0CTL.bit.TRIGSEL 	= 0;	//set SOC0 start trigger on software
	AdcRegs.ADCSOC1CTL.bit.TRIGSEL 	= 0;	//set SOC1 start trigger on software
 	AdcRegs.ADCSOC0CTL.bit.ACQPS 	= 6;	//set SOC0 S/H Window to 7 ADC Clock Cycles, (6 ACQPS plus 1)
	AdcRegs.ADCSOC1CTL.bit.ACQPS 	= 6;	//set SOC0 S/H Window to 7 ADC Clock Cycles, (6 ACQPS plus 1)
	AdcRegs.ADCINTSOCSEL1.bit.SOC0  = 1;	//ADCINT1 will trigger SOC0. TRIGSEL field is ignored.
	AdcRegs.ADCINTSOCSEL1.bit.SOC1  = 1;	//ADCINT1 will trigger SOC0. TRIGSEL field is ignored.
	EDIS;
}
——————————————————————————————————————————————————————


谢谢各位了。

10#：

回复 ChongWen Zhao:

设置两个SOC的目的是为了丢弃第一个采样值 — 因为每个采样序列的第一个可能不准确(请查看Piccolo B勘误表)，它不会导致ADC不能启动。

各位好，

我想使用软件触发ADC进行连续采样，但是我将.ADCSOCFRC1位置1后，在WATCH WINDOW中看.ADCSOCFRC1仍然是0,，

因此ADC也没有正确工作，希望各位看下代码帮我找找原因，谢谢。

————————————————————————————————

void main()
{
// Step 1. Initialize System Control:
// PLL, WatchDog, enable Peripheral Clocks
// This example function is found in the DSP2833x_SysCtrl.c file.
InitSysCtrl();

// Step 2. Initalize GPIO:// This example function is found in the DSP2833x_Gpio.c file and
// illustrates how to set the GPIO to it's default state.
// InitGpio();  // Skipped for this example
 // Step 3. Clear all interrupts and initialize PIE vector table:
// Disable CPU interruptsDINT;
InitEPwm6Gpio();
// Initialize PIE control registers to their default state.
// The default state is all PIE interrupts disabled and flags
// are cleared. // This function is found in the DSP2833x_PieCtrl.c file.
InitPieCtrl();

// Disable CPU interrupts and clear all CPU interrupt flags:
IER = 0x0000;
IFR = 0x0000;
InitPieVectTable();
// Interrupts that are used in this example are re-mapped to
// ISR functions found within this file.
EALLOW;  // This is needed to write to EALLOW protected register
PieVectTable.ADCINT1 = &adc_isr;
// Enable ADCINT1 in PIE
PieCtrlRegs.PIEIER1.bit.INTx1 = 1;	// Enable INT 1.1 in the PIE
EDIS;// This is needed to disable write to EALLOW protected registers

// Step 4. Initialize all the Device Peripherals:
// This function is found in DSP2803x_InitPeripherals.c
// InitPeripherals(); // Not required for this example
InitAdc();  // For this example, init the ADC
InitEPwm6();	

// Step 5. User specific code, enable interrupts:
IER |= M_INT1; 						// Enable CPU Interrupt 1
EINT;						// Enable Global interrupt INTM
ERTM;						// Enable Global realtime interrupt DBGM

LoopCount = 0;
ConversionCount = 0;

for(i=0;i<512;i++)
{
		SampleTable[ConversionCount] = 0;
		ConversionCount++;
}
ConversionCount = 0;

Adc_Config();
//Force start of conversion on SOC0
EALLOW;
AdcRegs.ADCSOCFRC1.all = 0x03;
EDIS;

for(;;)
{
		asm("NOP");


}
}
interrupt void adc_isr(void)
{
	//Wait for end of conversion.
while(AdcRegs.ADCINTFLG.bit.ADCINT1 == 0){}  //Wait for ADCINT1
AdcRegs.ADCINTFLGCLR.bit.ADCINT1 = 1;//Clear ADCINT1

  	SampleTable[ConversionCount] = AdcResult.ADCRESULT0;
   // If 512 conversions have been logged, start over
 	if(ConversionCount == 512)
  	{
	ConversionCount = 0;
 	}
  	else ConversionCount++;

  	AdcRegs.ADCINTFLGCLR.bit.ADCINT1 = 1;		//Clear ADCINT1 flag reinitialize for next SOC
  	PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;// Acknowledge interrupt to PIE

  	return;
}
void Adc_Config()
{
	// Configure ADC
	EALLOW;
	AdcRegs.ADCCTL1.bit.INTPULSEPOS	= 1;	//ADCINT1 trips after AdcResults latch
	AdcRegs.INTSEL1N2.bit.INT1E= 1;	//Enabled ADCINT1
	AdcRegs.INTSEL1N2.bit.INT1CONT  = 0;	//Disable ADCINT1 Continuous mode
	AdcRegs.INTSEL1N2.bit.INT1SEL	= 1;	//setup EOC1 to trigger ADCINT1 to fire
	AdcRegs.ADCSOC0CTL.bit.CHSEL 	= 7;	//set SOC0 channel select to ADCINA7
	AdcRegs.ADCSOC1CTL.bit.CHSEL 	= 7;	//set SOC1 channel select to ADCINA7
	AdcRegs.ADCSOC0CTL.bit.TRIGSEL 	= 0;	//set SOC0 start trigger on software
	AdcRegs.ADCSOC1CTL.bit.TRIGSEL 	= 0;	//set SOC1 start trigger on software
 	AdcRegs.ADCSOC0CTL.bit.ACQPS 	= 6;	//set SOC0 S/H Window to 7 ADC Clock Cycles, (6 ACQPS plus 1)
	AdcRegs.ADCSOC1CTL.bit.ACQPS 	= 6;	//set SOC0 S/H Window to 7 ADC Clock Cycles, (6 ACQPS plus 1)
	AdcRegs.ADCINTSOCSEL1.bit.SOC0  = 1;	//ADCINT1 will trigger SOC0. TRIGSEL field is ignored.
	AdcRegs.ADCINTSOCSEL1.bit.SOC1  = 1;	//ADCINT1 will trigger SOC0. TRIGSEL field is ignored.
	EDIS;
}
——————————————————————————————————————————————————————


谢谢各位了。

Forrest：

回复 10#:

楼主，楼上说的没有错。

另外楼主，如果不“使用软件触发时将两个SOC一起设置，如程序中所示，否则有可能还是开启不了ADC”那这就是BUG，这不会发生的，楼主放心。

各位好，

我想使用软件触发ADC进行连续采样，但是我将.ADCSOCFRC1位置1后，在WATCH WINDOW中看.ADCSOCFRC1仍然是0,，

因此ADC也没有正确工作，希望各位看下代码帮我找找原因，谢谢。

————————————————————————————————

void main()
{
// Step 1. Initialize System Control:
// PLL, WatchDog, enable Peripheral Clocks
// This example function is found in the DSP2833x_SysCtrl.c file.
InitSysCtrl();

// Step 2. Initalize GPIO:// This example function is found in the DSP2833x_Gpio.c file and
// illustrates how to set the GPIO to it's default state.
// InitGpio();  // Skipped for this example
 // Step 3. Clear all interrupts and initialize PIE vector table:
// Disable CPU interruptsDINT;
InitEPwm6Gpio();
// Initialize PIE control registers to their default state.
// The default state is all PIE interrupts disabled and flags
// are cleared. // This function is found in the DSP2833x_PieCtrl.c file.
InitPieCtrl();

// Disable CPU interrupts and clear all CPU interrupt flags:
IER = 0x0000;
IFR = 0x0000;
InitPieVectTable();
// Interrupts that are used in this example are re-mapped to
// ISR functions found within this file.
EALLOW;  // This is needed to write to EALLOW protected register
PieVectTable.ADCINT1 = &adc_isr;
// Enable ADCINT1 in PIE
PieCtrlRegs.PIEIER1.bit.INTx1 = 1;	// Enable INT 1.1 in the PIE
EDIS;// This is needed to disable write to EALLOW protected registers

// Step 4. Initialize all the Device Peripherals:
// This function is found in DSP2803x_InitPeripherals.c
// InitPeripherals(); // Not required for this example
InitAdc();  // For this example, init the ADC
InitEPwm6();	

// Step 5. User specific code, enable interrupts:
IER |= M_INT1; 						// Enable CPU Interrupt 1
EINT;						// Enable Global interrupt INTM
ERTM;						// Enable Global realtime interrupt DBGM

LoopCount = 0;
ConversionCount = 0;

for(i=0;i<512;i++)
{
		SampleTable[ConversionCount] = 0;
		ConversionCount++;
}
ConversionCount = 0;

Adc_Config();
//Force start of conversion on SOC0
EALLOW;
AdcRegs.ADCSOCFRC1.all = 0x03;
EDIS;

for(;;)
{
		asm("NOP");


}
}
interrupt void adc_isr(void)
{
	//Wait for end of conversion.
while(AdcRegs.ADCINTFLG.bit.ADCINT1 == 0){}  //Wait for ADCINT1
AdcRegs.ADCINTFLGCLR.bit.ADCINT1 = 1;//Clear ADCINT1

  	SampleTable[ConversionCount] = AdcResult.ADCRESULT0;
   // If 512 conversions have been logged, start over
 	if(ConversionCount == 512)
  	{
	ConversionCount = 0;
 	}
  	else ConversionCount++;

  	AdcRegs.ADCINTFLGCLR.bit.ADCINT1 = 1;		//Clear ADCINT1 flag reinitialize for next SOC
  	PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;// Acknowledge interrupt to PIE

  	return;
}
void Adc_Config()
{
	// Configure ADC
	EALLOW;
	AdcRegs.ADCCTL1.bit.INTPULSEPOS	= 1;	//ADCINT1 trips after AdcResults latch
	AdcRegs.INTSEL1N2.bit.INT1E= 1;	//Enabled ADCINT1
	AdcRegs.INTSEL1N2.bit.INT1CONT  = 0;	//Disable ADCINT1 Continuous mode
	AdcRegs.INTSEL1N2.bit.INT1SEL	= 1;	//setup EOC1 to trigger ADCINT1 to fire
	AdcRegs.ADCSOC0CTL.bit.CHSEL 	= 7;	//set SOC0 channel select to ADCINA7
	AdcRegs.ADCSOC1CTL.bit.CHSEL 	= 7;	//set SOC1 channel select to ADCINA7
	AdcRegs.ADCSOC0CTL.bit.TRIGSEL 	= 0;	//set SOC0 start trigger on software
	AdcRegs.ADCSOC1CTL.bit.TRIGSEL 	= 0;	//set SOC1 start trigger on software
 	AdcRegs.ADCSOC0CTL.bit.ACQPS 	= 6;	//set SOC0 S/H Window to 7 ADC Clock Cycles, (6 ACQPS plus 1)
	AdcRegs.ADCSOC1CTL.bit.ACQPS 	= 6;	//set SOC0 S/H Window to 7 ADC Clock Cycles, (6 ACQPS plus 1)
	AdcRegs.ADCINTSOCSEL1.bit.SOC0  = 1;	//ADCINT1 will trigger SOC0. TRIGSEL field is ignored.
	AdcRegs.ADCINTSOCSEL1.bit.SOC1  = 1;	//ADCINT1 will trigger SOC0. TRIGSEL field is ignored.
	EDIS;
}
——————————————————————————————————————————————————————


谢谢各位了。

ChongWen Zhao：

回复 10#:

谢谢您，您的解答对我帮助很大，更加明白了ADC的设置。

用EPWM触发的例程就是ADC_SOC那个是可以正确触发ADC的，说明ADC正常。

我改为在每个中断中都加入了软件触发的语句，这样就正常了。

不过，还请高人给予指点一二：请问如何正确设置软件触发的连续采样，有没有可能就是软件触发后，通过ADCINT1直接触发SOC，进行连续采样的设置？

各位好，

我想使用软件触发ADC进行连续采样，但是我将.ADCSOCFRC1位置1后，在WATCH WINDOW中看.ADCSOCFRC1仍然是0,，

因此ADC也没有正确工作，希望各位看下代码帮我找找原因，谢谢。

————————————————————————————————

void main()
{
// Step 1. Initialize System Control:
// PLL, WatchDog, enable Peripheral Clocks
// This example function is found in the DSP2833x_SysCtrl.c file.
InitSysCtrl();

// Step 2. Initalize GPIO:// This example function is found in the DSP2833x_Gpio.c file and
// illustrates how to set the GPIO to it's default state.
// InitGpio();  // Skipped for this example
 // Step 3. Clear all interrupts and initialize PIE vector table:
// Disable CPU interruptsDINT;
InitEPwm6Gpio();
// Initialize PIE control registers to their default state.
// The default state is all PIE interrupts disabled and flags
// are cleared. // This function is found in the DSP2833x_PieCtrl.c file.
InitPieCtrl();

// Disable CPU interrupts and clear all CPU interrupt flags:
IER = 0x0000;
IFR = 0x0000;
InitPieVectTable();
// Interrupts that are used in this example are re-mapped to
// ISR functions found within this file.
EALLOW;  // This is needed to write to EALLOW protected register
PieVectTable.ADCINT1 = &adc_isr;
// Enable ADCINT1 in PIE
PieCtrlRegs.PIEIER1.bit.INTx1 = 1;	// Enable INT 1.1 in the PIE
EDIS;// This is needed to disable write to EALLOW protected registers

// Step 4. Initialize all the Device Peripherals:
// This function is found in DSP2803x_InitPeripherals.c
// InitPeripherals(); // Not required for this example
InitAdc();  // For this example, init the ADC
InitEPwm6();	

// Step 5. User specific code, enable interrupts:
IER |= M_INT1; 						// Enable CPU Interrupt 1
EINT;						// Enable Global interrupt INTM
ERTM;						// Enable Global realtime interrupt DBGM

LoopCount = 0;
ConversionCount = 0;

for(i=0;i<512;i++)
{
		SampleTable[ConversionCount] = 0;
		ConversionCount++;
}
ConversionCount = 0;

Adc_Config();
//Force start of conversion on SOC0
EALLOW;
AdcRegs.ADCSOCFRC1.all = 0x03;
EDIS;

for(;;)
{
		asm("NOP");


}
}
interrupt void adc_isr(void)
{
	//Wait for end of conversion.
while(AdcRegs.ADCINTFLG.bit.ADCINT1 == 0){}  //Wait for ADCINT1
AdcRegs.ADCINTFLGCLR.bit.ADCINT1 = 1;//Clear ADCINT1

  	SampleTable[ConversionCount] = AdcResult.ADCRESULT0;
   // If 512 conversions have been logged, start over
 	if(ConversionCount == 512)
  	{
	ConversionCount = 0;
 	}
  	else ConversionCount++;

  	AdcRegs.ADCINTFLGCLR.bit.ADCINT1 = 1;		//Clear ADCINT1 flag reinitialize for next SOC
  	PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;// Acknowledge interrupt to PIE

  	return;
}
void Adc_Config()
{
	// Configure ADC
	EALLOW;
	AdcRegs.ADCCTL1.bit.INTPULSEPOS	= 1;	//ADCINT1 trips after AdcResults latch
	AdcRegs.INTSEL1N2.bit.INT1E= 1;	//Enabled ADCINT1
	AdcRegs.INTSEL1N2.bit.INT1CONT  = 0;	//Disable ADCINT1 Continuous mode
	AdcRegs.INTSEL1N2.bit.INT1SEL	= 1;	//setup EOC1 to trigger ADCINT1 to fire
	AdcRegs.ADCSOC0CTL.bit.CHSEL 	= 7;	//set SOC0 channel select to ADCINA7
	AdcRegs.ADCSOC1CTL.bit.CHSEL 	= 7;	//set SOC1 channel select to ADCINA7
	AdcRegs.ADCSOC0CTL.bit.TRIGSEL 	= 0;	//set SOC0 start trigger on software
	AdcRegs.ADCSOC1CTL.bit.TRIGSEL 	= 0;	//set SOC1 start trigger on software
 	AdcRegs.ADCSOC0CTL.bit.ACQPS 	= 6;	//set SOC0 S/H Window to 7 ADC Clock Cycles, (6 ACQPS plus 1)
	AdcRegs.ADCSOC1CTL.bit.ACQPS 	= 6;	//set SOC0 S/H Window to 7 ADC Clock Cycles, (6 ACQPS plus 1)
	AdcRegs.ADCINTSOCSEL1.bit.SOC0  = 1;	//ADCINT1 will trigger SOC0. TRIGSEL field is ignored.
	AdcRegs.ADCINTSOCSEL1.bit.SOC1  = 1;	//ADCINT1 will trigger SOC0. TRIGSEL field is ignored.
	EDIS;
}
——————————————————————————————————————————————————————


谢谢各位了。

ChongWen Zhao：

回复 Forrest:

谢谢您的指导，祝愉快！如方便能否再解答一下我提出的另一个问题？

各位好，

我想使用软件触发ADC进行连续采样，但是我将.ADCSOCFRC1位置1后，在WATCH WINDOW中看.ADCSOCFRC1仍然是0,，

因此ADC也没有正确工作，希望各位看下代码帮我找找原因，谢谢。

————————————————————————————————

void main()
{
// Step 1. Initialize System Control:
// PLL, WatchDog, enable Peripheral Clocks
// This example function is found in the DSP2833x_SysCtrl.c file.
InitSysCtrl();

// Step 2. Initalize GPIO:// This example function is found in the DSP2833x_Gpio.c file and
// illustrates how to set the GPIO to it's default state.
// InitGpio();  // Skipped for this example
 // Step 3. Clear all interrupts and initialize PIE vector table:
// Disable CPU interruptsDINT;
InitEPwm6Gpio();
// Initialize PIE control registers to their default state.
// The default state is all PIE interrupts disabled and flags
// are cleared. // This function is found in the DSP2833x_PieCtrl.c file.
InitPieCtrl();

// Disable CPU interrupts and clear all CPU interrupt flags:
IER = 0x0000;
IFR = 0x0000;
InitPieVectTable();
// Interrupts that are used in this example are re-mapped to
// ISR functions found within this file.
EALLOW;  // This is needed to write to EALLOW protected register
PieVectTable.ADCINT1 = &adc_isr;
// Enable ADCINT1 in PIE
PieCtrlRegs.PIEIER1.bit.INTx1 = 1;	// Enable INT 1.1 in the PIE
EDIS;// This is needed to disable write to EALLOW protected registers

// Step 4. Initialize all the Device Peripherals:
// This function is found in DSP2803x_InitPeripherals.c
// InitPeripherals(); // Not required for this example
InitAdc();  // For this example, init the ADC
InitEPwm6();	

// Step 5. User specific code, enable interrupts:
IER |= M_INT1; 						// Enable CPU Interrupt 1
EINT;						// Enable Global interrupt INTM
ERTM;						// Enable Global realtime interrupt DBGM

LoopCount = 0;
ConversionCount = 0;

for(i=0;i<512;i++)
{
		SampleTable[ConversionCount] = 0;
		ConversionCount++;
}
ConversionCount = 0;

Adc_Config();
//Force start of conversion on SOC0
EALLOW;
AdcRegs.ADCSOCFRC1.all = 0x03;
EDIS;

for(;;)
{
		asm("NOP");


}
}
interrupt void adc_isr(void)
{
	//Wait for end of conversion.
while(AdcRegs.ADCINTFLG.bit.ADCINT1 == 0){}  //Wait for ADCINT1
AdcRegs.ADCINTFLGCLR.bit.ADCINT1 = 1;//Clear ADCINT1

  	SampleTable[ConversionCount] = AdcResult.ADCRESULT0;
   // If 512 conversions have been logged, start over
 	if(ConversionCount == 512)
  	{
	ConversionCount = 0;
 	}
  	else ConversionCount++;

  	AdcRegs.ADCINTFLGCLR.bit.ADCINT1 = 1;		//Clear ADCINT1 flag reinitialize for next SOC
  	PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;// Acknowledge interrupt to PIE

  	return;
}
void Adc_Config()
{
	// Configure ADC
	EALLOW;
	AdcRegs.ADCCTL1.bit.INTPULSEPOS	= 1;	//ADCINT1 trips after AdcResults latch
	AdcRegs.INTSEL1N2.bit.INT1E= 1;	//Enabled ADCINT1
	AdcRegs.INTSEL1N2.bit.INT1CONT  = 0;	//Disable ADCINT1 Continuous mode
	AdcRegs.INTSEL1N2.bit.INT1SEL	= 1;	//setup EOC1 to trigger ADCINT1 to fire
	AdcRegs.ADCSOC0CTL.bit.CHSEL 	= 7;	//set SOC0 channel select to ADCINA7
	AdcRegs.ADCSOC1CTL.bit.CHSEL 	= 7;	//set SOC1 channel select to ADCINA7
	AdcRegs.ADCSOC0CTL.bit.TRIGSEL 	= 0;	//set SOC0 start trigger on software
	AdcRegs.ADCSOC1CTL.bit.TRIGSEL 	= 0;	//set SOC1 start trigger on software
 	AdcRegs.ADCSOC0CTL.bit.ACQPS 	= 6;	//set SOC0 S/H Window to 7 ADC Clock Cycles, (6 ACQPS plus 1)
	AdcRegs.ADCSOC1CTL.bit.ACQPS 	= 6;	//set SOC0 S/H Window to 7 ADC Clock Cycles, (6 ACQPS plus 1)
	AdcRegs.ADCINTSOCSEL1.bit.SOC0  = 1;	//ADCINT1 will trigger SOC0. TRIGSEL field is ignored.
	AdcRegs.ADCINTSOCSEL1.bit.SOC1  = 1;	//ADCINT1 will trigger SOC0. TRIGSEL field is ignored.
	EDIS;
}
——————————————————————————————————————————————————————


谢谢各位了。

yanqiang zhan：

回复 ChongWen Zhao:

兄弟怎么设置的啊？贴出来看看啊~~~~

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