TMS320F28027: AD采样的结果数据跳动比较大，转换的结果最大是2020最小是1994 差值大16 ，我的电源采用12V蓄电池,12V通过7805,7805再通过AMS1117-3.3V给芯片供电

按照第三方网站的介绍我试了下还是没有解决即同样的问题卡死在 while (AdcRegs.ADCINTFLG.bit.ADCINT2 == 0){}这条语句

我把代码贴出来

 #pragma CODE_SECTION(adc_isr, "ramfuncs");
 #pragma CODE_SECTION(AdcConversion, "ramfuncs");
 
 
void ADC_Config(void)
{

   InitAdc();  // 先调用官方AD默认的配置函数初始化（必须）

   EALLOW;
   PieVectTable.ADCINT3 = &adc_isr;// AD中断函数映射
   EDIS;

   PieCtrlRegs.PIEIER10.bit.INTx3 = 1;	// Enable INT 10.3 in the PIE
   IER |= M_INT10; 						// Enable CPU Interrupt 10

// Configure ADC
	EALLOW;
//	AdcRegs.ADCCTL2.bit.CLKDIV2EN = 0; //ADCclock = CPUclock
	AdcRegs.ADCCTL1.bit.ADCREFSEL	= 0;    //REF Int
	AdcRegs.ADCCTL1.bit.INTPULSEPOS	= 1;	//ADCINT1 trips after AdcResults latch //--> P39 HIKE,EOCx产生来自源选择
	AdcRegs.INTSEL3N4.bit.INT3E     = 1;	//Enabled ADCINT3
	AdcRegs.INTSEL3N4.bit.INT3CONT  = 0;	//Disable ADCINT3 Continuous mode，single conversion mode

	//HIKE,ADCINTx EOC Source Select, 即哪个 EOCx 触发中断
	AdcRegs.INTSEL3N4.bit.INT3SEL	= 1;	//setup EOC1 to trigger ADCINT3 to fire , EOC1 is trigger for ADCINTx

//////////////////////////////////////////////////////////////////////////////////////////////////////////
//ADC勘误表上指出，SOC通道第一个采样的数据不正确，从第二个开始为正确的数据，故这里SOC0 SOC1数据不做处理

//	//P17 P35 同步采样的话，两个SOC的CHSEL设置一样
//	//Simultaneous sampling enable for SOC0/SOC1
//	AdcRegs.ADCSAMPLEMODE.bit.SIMULEN0=1;	//SOC0/1 Simultaneous Sampling Enable	,SOC0蚐OC1组合工作
//	AdcRegs.ADCSOC0CTL.bit.CHSEL 	= 3;	//SOC0 (ADCINA3/ADCINB3 pair)，配置模拟通道连接
//	AdcRegs.ADCSOC1CTL.bit.CHSEL 	= 3;

//SOC 连续采样，赋值与通道连接如下
//0-7为A0到A7
//8-16为B0到B7
	AdcRegs.ADCSOC0CTL.bit.CHSEL 	= 11;	//set SOC0 channel select to ADCINB3
	AdcRegs.ADCSOC1CTL.bit.CHSEL 	= 11;	//set SOC3 channel select to ADCINB3

//-->HIKE ,AD选择触发源,软件触发 P34
	AdcRegs.ADCSOC0CTL.bit.TRIGSEL 	= 0x0C;//PWM4B进行ADC的SOCB触发
	AdcRegs.ADCSOC1CTL.bit.TRIGSEL 	= 0x0C;

	AdcRegs.ADCSOC0CTL.bit.ACQPS 	= 13;
	AdcRegs.ADCSOC1CTL.bit.ACQPS 	= 13;	//set SOC0 S/H Window to 7 ADC Clock Cycles, (6 ACQPS plus 1)
	EDIS;
}
void My_AdcOffsetSelfCal()
{
    Uint16 AdcConvMean;
    EALLOW;
    AdcRegs.ADCCTL1.bit.ADCREFSEL = 0;					//Select internal reference mode
    AdcRegs.ADCOFFTRIM.bit.OFFTRIM = 80;                //Apply artificial offset (+80) to account for a negative offset that may reside in the ADC core
    AdcRegs.ADCCTL1.bit.VREFLOCONV = 1;                 //Select VREFLO internal connection on B5
    AdcChanSelect(13);                                  //Select channel B5 for all SOC
    AdcConvMean = AdcConversion();                      //Capture ADC conversion on VREFLO
    AdcRegs.ADCOFFTRIM.bit.OFFTRIM = 80 - AdcConvMean;  //Set offtrim register with new value (i.e remove artical offset (+80) and create a two's compliment of the offset error)
    AdcRegs.ADCCTL1.bit.VREFLOCONV = 0;                 //Select external ADCIN5 input pin on B5
    EDIS;
}
//-------------------------------------------------------------------------
//AD 中断处理函数
//
//##########################################################################
interrupt void  adc_isr(void)
{
	EALLOW;
	PieCtrlRegs.PIEACK.all = PIEACK_GROUP10;   // Acknowledge interrupt to PIE
	EDIS;

	AdcRegs.ADCINTFLGCLR.bit.ADCINT3 = 1;		//Clear ADCINT1 flag reinitialize for next SOC
	adcISRFlag = 1;
	adcVal[0] = AdcResult.ADCRESULT0;
	adcVal[1] = AdcResult.ADCRESULT1;
}

上面是相关的部分函数 开头是把两个函数定义在flash，期中函数 My_AdcOffsetSelfCal()是我按照第三方网站的描述所建立的函数体

然后在主函数main中程序如下
void main(void) 
{
	uint8_t print_cnt1=0,print_cnt2=0;
// Step 1. Initialize System Control:b
// PLL, WatchDog, enable Peripheral Clocks
// This example function is found in the DSP2803x_SysCtrl.c CAN_Node_IDfile.
   InitSysCtrl();

// Step 2. Initalize GPIO:
// This example function is found in the DSP2803x_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 interrupts
   DINT;

// 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 DSP2803x_PieCtrl.c file.
   InitPieCtrl();

// Disable CPU interrupts and clear all CPU interrupt flags:
   IER = 0x0000;
   IFR = 0x0000;

// Initialize the PIE vector table with pointers to the shell Interrupt
// Service Routines (ISR).
// This will populate the entire table, even if the interrupt
// is not used in this example.  This is useful for debug purposes.
// The shell ISR routines are found in DSP2803x_DefaultIsr.c.
// This function is found in DSP2803x_PieVect.c.
   InitPieVectTable();

   // Copy time critical code and Flash setup code to RAM
   //实现在RAM中运行代码的搬运，例如使用官方的DELAY_US
   MemCopy(&RamfuncsLoadStart, &RamfuncsLoadEnd, &RamfuncsRunStart);
   //-----------------------以上是系统初始化用的，一般不动--------------------------------


    InitMyGPIO();
	InitKEY();//按键

	SCI_Init();//波特率128000bps
	open_uart_debug();
	printf("\r\n\r\n\r\nDSP is Ready");//标准C的printf输出测试，串口调试助手设置波特率128000bps，ASCII格式显示

	Timer0_init();//定时器0初始化，1ms周期中断

//---------------------TM1650初始化  IIC驱动--------------------------------
	softResetIIC_BUS(); //软件复位IIC从设备
	InitI2C_Gpio(); //io 初始化为IIC
	I2CA_Init();    //HW IIC初始化，100KHz
	printf("\r\nTM1650 init...");//标准C的printf输出测试，串口调试助手设置波特率128000bps，ASCII格式显示

	//<TM1650.pdf>P4  显示命令设置
	LigntVal = 0x11; //BIT6到BIT4为亮度调节，BIT0是  1 开启/0关闭
	TM1650_Send(CMD_SEG, LigntVal); //1级亮度，开启显示
	TM1650_Send(DIG1, SEG7Table[0]); //GID1
	TM1650_Send(DIG2, SEG7Table[0]); //GID2
	TM1650_Send(DIG3, SEG7Table[0]); //GID3
	TM1650_Send(DIG4, SEG7Table[0]); //GID4

  	ADC_Config();
  	My_AdcOffsetSelfCal();

	printf("\r\n开发板左上角的J4排针（3针），用跳线帽短接靠左的2根针，即为将RG接入到模拟输入口B3");
	printf("\r\nPWM频率为19.6KHZ");
	InitEPWM_AQ_DB();//PWM初始化 中央对齐模式  ， 20K频率 ， PWM4A PWM4B为互补输出 ，PWM4B触发AINB组的ADC采样

	//中断配置步骤-----5
	PieCtrlRegs.PIECTRL.bit.ENPIE = 1;    // Enable the PIE block
	EINT;                                 // Enable Global interrupt INTM
	ERTM;//请参看 使用须知 文件夹下的   分享--ERTM、DRTM 在DSP编程中的作用.pdf
	目前程序就是无法运行 CMD定义代码在flash  谢谢！