我打算用28335的pwm触发ADC，不知道编的程序哪里出问题了，麻烦各位大神帮忙看看吧！！！ - C2000(TM) 32位实时 MCU - 德州仪器在线技术支持社区
我打算用28335的pwm触发ADC，不知道编的程序哪里出问题了，麻烦各位大神帮忙看看吧！！！
发表于2日前
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头疼了一周了。。&/p>
&div>#include &DSP2833x_Device.h&&&&& // DSP2833x Headerfile Include File&br>#include &DSP2833x_Examples.h&&& // DSP2833x Examples Include File&br>#include &DSP28x_Project.h&&&&& // Device Headerfile and Examples Include File&br>// PWM start parameters&br>Uint16&&& *ExRamStart = (Uint16 *)0x100000;&br>void InitEPwm1Example(void);&br>void InitEPwm2Example(void);&br>void InitEPwm3Example(void);&br>void Adcsample(void);&br>Uint32& EPwm1TimerIntC&br>Uint32& EPwm2TimerIntC&br>Uint32& EPwm3TimerIntC&br>Uint16& EPwm1_DB_D&br>Uint16& EPwm2_DB_D&br>Uint16& EPwm3_DB_D&/div>
&div>#define EPWM1_MAX_DB&& 0x03FF&br>#define EPWM2_MAX_DB&& 0x03FF&br>#define EPWM3_MAX_DB&& 0x03FF&/div>
&div>#define EPWM1_MIN_DB&& 0&br>#define EPWM2_MIN_DB&& 0&br>#define EPWM3_MIN_DB&& 0&/div>
&div>#define DB_UP&& 1&br>#define DB_DOWN 0&/div>
&div>// ADC start parameters&br>#if (CPU_FRQ_150MHZ)&&&& // Default - 150 ===========================================================================================================================MHz SYSCLKOUT&br>& #define ADC_MODCLK 0x3 // HSPCLK = SYSCLKOUT/2*ADC_MODCLK2 = 150/(2*3)&& = 25.0 MHz&br>#endif&br>#if (CPU_FRQ_100MHZ)&br>& #define ADC_MODCLK 0x2 // HSPCLK = SYSCLKOUT/2*ADC_MODCLK2 = 100/(2*2)&& = 25.0 MHz&br>#endif&br>#define ADC_CKPS&& 0x0&& // ADC module clock = HSPCLK/1&&&&& = 25.5MHz/(1)&& = 25.0 MHz&br>#define ADC_SHCLK& 0x1&& // S/H width in ADC module periods&&&&&&&&&&&&&&&&& = 2 ADC cycle&br>#define AVG&&&&&&& 1000& // Average sample limit&br>#define ZOFFSET&&& 0x00& // Average Zero offset&br>#define BUF_SIZE&& 512& // Sample buffer size&/div>
&div>// Prototype statements for functions found within this file.&br>__interrupt void adc_isr(void);&/div>
&div>// Global variables used in this example:&br>Uint16 LoopC&br>Uint16 ConversionC&br>Uint16 Voltage1[10];&br>Uint16 Voltage2[10];&br>void main(void)&br>{&/div>
&div>&// Step 1. Initialize System Control:&br>// PLL, WatchDog, enable Peripheral Clocks&br>// This example function is found in the DSP2833x_SysCtrl.c file.&br>&&br>&InitSysCtrl();&/div>
&div>// Step 2. Initalize GPIO:&br>// This example function is found in the DSP2833x_Gpio.c file and&br>// illustrates how to set the GPIO to it&#39;s default state.&br>// InitGpio();& // Skipped for this example&br>&&& InitEPwm1Gpio();&br>&&& InitEPwm2Gpio();&br>&&& InitEPwm3Gpio();&br>&&//zq&br>&&br>// Step 3. Clear all interrupts and initialize PIE vector table:&br>// Disable CPU interrupts&br>&& DINT;&/div>
&div>// Initialize the PIE control registers to their default state.&br>// The default state is all PIE interrupts disabled and flags&br>// are cleared.&br>// This function is found in the DSP2833x_PieCtrl.c file.&br>&& InitPieCtrl();&/div>
&div>// Disable CPU interrupts and clear all CPU interrupt flags:&br>&& IER = 0x0000;&br>&& IFR = 0x0000;&/div>
&div>// Initialize the PIE vector table with pointers to the shell Interrupt&br>// Service Routines (ISR).&br>// This will populate the entire table, even if the interrupt&br>// is not used in this example.& This is useful for debug purposes.&br>// The shell ISR routines are found in DSP2833x_DefaultIsr.c.&br>// This function is found in DSP2833x_PieVect.c.&br>&& InitPieVectTable();&/div>
&div>&& EALLOW;& // This is needed to write to EALLOW protected register&br>&& PieVectTable.ADCINT = &adc_&br>&& EDIS;&&& // This is needed to disable write to EALLOW protected registers&/div>
&div>&& InitAdc();&&&&&&&& // For this example, init the ADC&/div>
&div>// Interrupts that are used in this example are re-mapped to&br>// ISR functions found within this file.&/div>
&div>&br>//&StartCpuTimer0();&br>&&&&& EALLOW;&br>&&&&& SysCtrlRegs.PCLKCR0.bit.TBCLKSYNC = 0;&br>&&&&& EDIS;&br>&&&&& Adcsample();&br>&&&&& InitEPwm1Example();&br>&&&&& InitEPwm2Example();&br>&&&&& InitEPwm3Example();&/div>
&div>&&&&& EALLOW;&br>&&&&&&&&&&& SysCtrlRegs.PCLKCR0.bit.TBCLKSYNC = 1;&br>&&&&&&&&&&& EDIS;&br>&&& EALLOW;&br>&&&&& SysCtrlRegs.HISPCP.all = ADC_MODCLK;&// HSPCLK = SYSCLKOUT/ADC_MODCLK&br>&&&&& EDIS;&/div>
&div>&&&&& // Step 5. User specific code, enable interrupts&br>&&&&& // Initalize counters:&br>&&&&&&&& EPwm1TimerIntCount = 0;&br>&&&&&&&& EPwm2TimerIntCount = 0;&br>&&&&&&&& EPwm3TimerIntCount = 0;&/div>
&div>&&&&& // Enable CPU INT3 which is connected to EPWM1-3 INT:&br>&&&&&&&& //IER |= M_INT3;&/div>
&div>&&&&& // Enable EPWM INTn in the PIE: Group 3 interrupt 1-3&br>&&&&&&&& //PieCtrlRegs.PIEIER3.bit.INTx1 = 1;&br>&&&&&&&& //PieCtrlRegs.PIEIER3.bit.INTx2 = 1;&br>&&&&&&&& //PieCtrlRegs.PIEIER3.bit.INTx3 = 1;&/div>
&div>&&&&&&&& // Enable ADCINT in PIE&br>&&&&&&&&&&& PieCtrlRegs.PIEIER1.bit.INTx6 = 1;&/div>
&div>&&&&&&&& IER |= M_INT1; // Enable CPU Interrupt 1&/div>
&div>&&&&& // Enable global Interrupts and higher priority real-time debug events:&br>&&&&&&&& EINT;&& // Enable Global interrupt INTM&br>&&&&&&&& ERTM;&& // Enable Global realtime interrupt DBGM&/div>
&div>&&&&&&&& LoopCount = 0;&br>&&&&&&&&&&& ConversionCount = 0;&/div>
&div>&&&&& // Step 6. IDLE loop. Just sit and loop forever (optional):&br>&&&&&&&& for(;;)&br>&&&&&&&& {&br>&&&&&&&&&&&& asm(&&&&&&&&&& NOP&);&br>&&&& &&& for(i=1;i&=10;i++)&br>&&&&&&&&&&&& {}&br>&&&&&&&& }&br>}&br>&&&&&&&&&&&&&&&&&&&&&&&&&& //ADC模块&br>&& void Adcsample()&br>&& {&/div>
&div>&&&&&& // Specific ADC setup for this example:&br>&&&&&&&&& //AdcRegs.ADCTRL1.bit.ACQ_PS = 0& // Sequential mode: Sample rate&& = 1/[(2+ACQ_PS)*ADC clock in ns]&br>&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& //&&&&&&&&&&&&&&&&&&&& = 1/(3*40ns) =8.3MHz (for 150 MHz SYSCLKOUT)&br>&&&&&& &&&&&&&& //&&&&&&&&&&&&&&&&&&&& = 1/(3*80ns) =4.17MHz (for 100 MHz SYSCLKOUT)&br>&&&&&& &&&&&&&& // If Simultaneous mode enabled: Sample rate = 1/[(3+ACQ_PS)*ADC clock in ns]&br>&&&&&&&&& AdcRegs.ADCTRL3.bit.ADCCLKPS = ADC_CKPS;&br>&&&&&&&&& //AdcRegs.ADCTRL1.bit.SEQ_CASC = 1;&&&&&&& // 1& Cascaded mode&br>&&&&&&&&& AdcRegs.ADCCHSELSEQ1.bit.CONV00 = 0x0; // Setup ADCINA3 as 1st SEQ1 conv.&br>&&&&&&&&& AdcRegs.ADCCHSELSEQ1.bit.CONV01 = 0x0; // Setup ADCINA2 as 2nd SEQ1 conv.&br>&&&&&&&&& //AdcRegs.ADCTRL1.bit.CONT_RUN = 1;&&&&&& // Setup continuous run&br>&&&&&&&&& //AdcRegs.ADCTRL1.bit.SEQ_OVRD = 1;&&&&&& // Enable Sequencer override feature&br>&&&&&&&&& AdcRegs.ADCMAXCONV.bit.MAX_CONV1 = 0x1;& // convert and store in 8 results registers&br>&&&&&&&&& AdcRegs.ADCTRL2.bit.EPWM_SOCA_SEQ1 = 1;// Enable SOCA from ePWM to start SEQ1&br>&&&&&&&&& AdcRegs.ADCTRL2.bit.INT_ENA_SEQ1 = 1;& // Enable SEQ1 interrupt (every EOS)&br>&& }&/div>
&div>&br>&&&&&&&&&&&&& //PWM模块&/div>
&div>&& void InitEPwm1Example()&br>&& {&/div>
&div>&&&& EPwm1Regs.TBPRD =7500; // Period = 900 TBCLK counts&br>&&& &EPwm1Regs.TBPHS.half.TBPHS = 0; // Set Phase register to zero&br>&&& &EPwm1Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Symmetrical mode&br>&&& &EPwm1Regs.TBCTL.bit.PHSEN = TB_DISABLE; // Master module&br>&&& &EPwm1Regs.TBCTL.bit.PRDLD = TB_SHADOW;&br>&&& &EPwm1Regs.TBCTL.bit.SYNCOSEL = TB_CTR_ZERO; // Sync down-stream module&br>&&& &EPwm1Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;&&&&&& // Clock ratio to SYSCLKOUT&br>&&& &EPwm1Regs.TBCTL.bit.CLKDIV = TB_DIV1;&/div>
&div>&&& &EPwm1Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;&br>&&& &EPwm1Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;&br>&&& &EPwm1Regs.CMPCTL.bit.LOADAMODE = CC_CTR_ZERO; // load on CTR=Zero&br>&&& &EPwm1Regs.CMPCTL.bit.LOADBMODE = CC_CTR_ZERO; // load on CTR=Zero&br>&&& &EPwm1Regs.AQCTLA.bit.CAU = AQ_SET; // set actions for EPWM1A&br>&&& &EPwm1Regs.AQCTLA.bit.CAD = AQ_CLEAR;&br>&&& &EPwm1Regs.DBCTL.bit.OUT_MODE = DB_FULL_ENABLE; // enable Dead-band module&br>&&& &EPwm1Regs.DBCTL.bit.POLSEL = DB_ACTV_HIC; // Active Hi complementary&br>&&& &EPwm1Regs.DBFED = 200; // FED = 20 TBCLKs&br>&&& &EPwm1Regs.DBRED = 200; // RED = 20 TBCLKs&br>&&& &EPwm1Regs.CMPA.half.CMPA = 3750; // adjust duty for output EPWM1A&/div>
&div>&&& &EPwm1Regs.ETSEL.bit.SOCAEN = 1;&&&&&&& // Enable SOC on A group&br>&&& &EPwm1Regs.ETSEL.bit.SOCASEL = 4;&&&&&& // Select SOC from from CPMA on upcount&br>&&& &EPwm1Regs.ETPS.bit.SOCAPRD = 1;&&&&&&& // Generate pulse on 1st event&br>&& }&/div>
&div>&br>&& void InitEPwm2Example()&br>&& {&br>&&&& EPwm2Regs.TBPRD = 7500; // Period = 900 TBCLK counts&br>&&& &EPwm2Regs.TBPHS.half.TBPHS = 5000; // Phase = 300/900 * 360 = 120 deg&br>&&& &EPwm2Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Symmetrical mode&br>&&& &EPwm2Regs.TBCTL.bit.PHSEN = TB_ENABLE; // Slave module&br>&&& &EPwm2Regs.TBCTL.bit.PHSDIR = TB_DOWN; // Count DOWN on sync (=120 deg)&br>&&& &EPwm2Regs.TBCTL.bit.PRDLD = TB_SHADOW;&br>&&& &EPwm2Regs.TBCTL.bit.SYNCOSEL = TB_SYNC_IN; // sync flow-through&br>&&& &EPwm2Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;&&&&&& // Clock ratio to SYSCLKOUT&br>&&& &EPwm2Regs.TBCTL.bit.CLKDIV = TB_DIV1;&/div>
&div>&&& &EPwm2Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;&br>&&& &EPwm2Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;&br>&&& &EPwm2Regs.CMPCTL.bit.LOADAMODE = CC_CTR_ZERO; // load on CTR=Zero&br>&&& &EPwm2Regs.CMPCTL.bit.LOADBMODE = CC_CTR_ZERO; // load on CTR=Zero&br>&&& &EPwm2Regs.AQCTLA.bit.CAU = AQ_SET; // set actions for EPWM2A&br>&&& &EPwm2Regs.AQCTLA.bit.CAD = AQ_CLEAR;&br>&&& &EPwm2Regs.DBCTL.bit.OUT_MODE = DB_FULL_ENABLE; // enable Dead-band module&br>&&& &EPwm2Regs.DBCTL.bit.POLSEL = DB_ACTV_HIC; // Active Hi Complementary&br>&&& &EPwm2Regs.DBFED = 20; // FED = 20 TBCLKs&br>&&& &EPwm2Regs.DBRED = 20; // RED = 20 TBCLKs&br>&&& &EPwm2Regs.CMPA.half.CMPA = 3750; // adjust duty for output EPWM1A&/div>
&div>&& }&/div>
&div>&& void InitEPwm3Example()&br>&& {&/div>
&div>&&& EPwm3Regs.TBPRD = 7500; // Period = 900 TBCLK counts&br>&&& &EPwm3Regs.TBPHS.half.TBPHS = 5000; // Phase = 300/900 * 360 = 120 deg&br>&&& &EPwm3Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Symmetrical mode&br>&&& &EPwm3Regs.TBCTL.bit.PHSEN = TB_ENABLE; // Slave module&br>&&& &EPwm3Regs.TBCTL.bit.PHSDIR = TB_UP; // Count UP on sync (=240 deg)&br>&&& &EPwm3Regs.TBCTL.bit.PRDLD = TB_SHADOW;&br>&&& &EPwm3Regs.TBCTL.bit.SYNCOSEL = TB_SYNC_IN; // sync flow-through&br>&&& &EPwm3Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;&&&&&& // Clock ratio to SYSCLKOUT&br>&&& &EPwm3Regs.TBCTL.bit.CLKDIV = TB_DIV1;&/div>
&div>&&& &EPwm3Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;&br>&&& &EPwm3Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;&br>&&& &EPwm3Regs.CMPCTL.bit.LOADAMODE = CC_CTR_ZERO; // load on CTR=Zero&br>&&& &EPwm3Regs.CMPCTL.bit.LOADBMODE = CC_CTR_ZERO; // load on CTR=Zero&br>&&& &EPwm3Regs.AQCTLA.bit.CAU = AQ_SET; // set actions for EPWM3Ai&br>&&& &EPwm3Regs.AQCTLA.bit.CAD = AQ_CLEAR;&br>&&& &EPwm3Regs.DBCTL.bit.OUT_MODE = DB_FULL_ENABLE; // enable Dead-band module&br>&&& &EPwm3Regs.DBCTL.bit.POLSEL = DB_ACTV_HIC; // Active Hi complementary&br>&&& &EPwm3Regs.DBFED = 20; // FED = 20 TBCLKs&br>&&& &EPwm3Regs.DBRED = 20; // RED = 20 TBCLKs&br>&&& &EPwm3Regs.CMPA.half.CMPA = 3750; // adjust duty for output EPWM1A&/div>
&div>&& }&/div>
&div>__interrupt void& adc_isr(void)&br>&& {&br>&&&& Voltage1[ConversionCount] = AdcRegs.ADCRESULT0 &&4;&br>&&&& Voltage2[ConversionCount] = AdcRegs.ADCRESULT1 &&4;&/div>
&div>&&&& // If 40 conversions have been logged, start over&br>&&&& if(ConversionCount == 9)&br>&&&& {&br>&&&&&&& ConversionCount = 0;&br>&&&& }&br>&&&& else&br>&&&& {&br>&&&&&&&& ConversionCount++;&br>&&&& }&/div>
&div>&&&& // Reinitialize for next ADC sequence&br>&&&& AdcRegs.ADCTRL2.bit.RST_SEQ1 = 1;&&&&&&&& // Reset SEQ1&br>&&&& AdcRegs.ADCST.bit.INT_SEQ1_CLR = 1;&&&&&& // Clear INT SEQ1 bit&br>&&&& PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;&& // Acknowledge interrupt to PIE&/div>
&div>&&&&&br>&& }&/div>
&div>//===========================================================================&br>// No more.&br>//===========================================================================&/div>&div style=&clear:&>&/div>" />
我打算用28335的pwm触发ADC，不知道编的程序哪里出问题了，麻烦各位大神帮忙看看吧！！！
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头疼了一周了。。
#include &DSP2833x_Device.h&&&&& // DSP2833x Headerfile Include File#include &DSP2833x_Examples.h&&& // DSP2833x Examples Include File#include &DSP28x_Project.h&&&&& // Device Headerfile and Examples Include File// PWM start parametersUint16&&& *ExRamStart = (Uint16 *)0x100000;void InitEPwm1Example(void);void InitEPwm2Example(void);void InitEPwm3Example(void);void Adcsample(void);Uint32& EPwm1TimerIntCUint32& EPwm2TimerIntCUint32& EPwm3TimerIntCUint16& EPwm1_DB_DUint16& EPwm2_DB_DUint16& EPwm3_DB_D
#define EPWM1_MAX_DB&& 0x03FF#define EPWM2_MAX_DB&& 0x03FF#define EPWM3_MAX_DB&& 0x03FF
#define EPWM1_MIN_DB&& 0#define EPWM2_MIN_DB&& 0#define EPWM3_MIN_DB&& 0
#define DB_UP&& 1#define DB_DOWN 0
// ADC start parameters#if (CPU_FRQ_150MHZ)&&&& // Default - 150 ===========================================================================================================================MHz SYSCLKOUT& #define ADC_MODCLK 0x3 // HSPCLK = SYSCLKOUT/2*ADC_MODCLK2 = 150/(2*3)&& = 25.0 MHz#endif#if (CPU_FRQ_100MHZ)& #define ADC_MODCLK 0x2 // HSPCLK = SYSCLKOUT/2*ADC_MODCLK2 = 100/(2*2)&& = 25.0 MHz#endif#define ADC_CKPS&& 0x0&& // ADC module clock = HSPCLK/1&&&&& = 25.5MHz/(1)&& = 25.0 MHz#define ADC_SHCLK& 0x1&& // S/H width in ADC module periods&&&&&&&&&&&&&&&&& = 2 ADC cycle#define AVG&&&&&&& 1000& // Average sample limit#define ZOFFSET&&& 0x00& // Average Zero offset#define BUF_SIZE&& 512& // Sample buffer size
// Prototype statements for functions found within this file.__interrupt void adc_isr(void);
// Global variables used in this example:Uint16 LoopCUint16 ConversionCUint16 Voltage1[10];Uint16 Voltage2[10];void main(void){
&// 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&#39;s default state.// InitGpio();& // Skipped for this example&&& InitEPwm1Gpio();&&& InitEPwm2Gpio();&&& InitEPwm3Gpio();&&//zq&// Step 3. Clear all interrupts and initialize PIE vector table:// Disable CPU interrupts&& DINT;
// Initialize the 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;
// 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 DSP2833x_DefaultIsr.c.// This function is found in DSP2833x_PieVect.c.&& InitPieVectTable();
&& EALLOW;& // This is needed to write to EALLOW protected register&& PieVectTable.ADCINT = &adc_&& EDIS;&&& // This is needed to disable write to EALLOW protected registers
&& InitAdc();&&&&&&&& // For this example, init the ADC
// Interrupts that are used in this example are re-mapped to// ISR functions found within this file.
//&StartCpuTimer0();&&&&& EALLOW;&&&&& SysCtrlRegs.PCLKCR0.bit.TBCLKSYNC = 0;&&&&& EDIS;&&&&& Adcsample();&&&&& InitEPwm1Example();&&&&& InitEPwm2Example();&&&&& InitEPwm3Example();
&&&&& EALLOW;&&&&&&&&&&& SysCtrlRegs.PCLKCR0.bit.TBCLKSYNC = 1;&&&&&&&&&&& EDIS;&&& EALLOW;&&&&& SysCtrlRegs.HISPCP.all = ADC_MODCLK;&// HSPCLK = SYSCLKOUT/ADC_MODCLK&&&&& EDIS;
&&&&& // Step 5. User specific code, enable interrupts&&&&& // Initalize counters:&&&&&&&& EPwm1TimerIntCount = 0;&&&&&&&& EPwm2TimerIntCount = 0;&&&&&&&& EPwm3TimerIntCount = 0;
&&&&& // Enable CPU INT3 which is connected to EPWM1-3 INT:&&&&&&&& //IER |= M_INT3;
&&&&& // Enable EPWM INTn in the PIE: Group 3 interrupt 1-3&&&&&&&& //PieCtrlRegs.PIEIER3.bit.INTx1 = 1;&&&&&&&& //PieCtrlRegs.PIEIER3.bit.INTx2 = 1;&&&&&&&& //PieCtrlRegs.PIEIER3.bit.INTx3 = 1;
&&&&&&&& // Enable ADCINT in PIE&&&&&&&&&&& PieCtrlRegs.PIEIER1.bit.INTx6 = 1;
&&&&&&&& IER |= M_INT1; // Enable CPU Interrupt 1
&&&&& // Enable global Interrupts and higher priority real-time debug events:&&&&&&&& EINT;&& // Enable Global interrupt INTM&&&&&&&& ERTM;&& // Enable Global realtime interrupt DBGM
&&&&&&&& LoopCount = 0;&&&&&&&&&&& ConversionCount = 0;
&&&&& // Step 6. IDLE loop. Just sit and loop forever (optional):&&&&&&&& for(;;)&&&&&&&& {&&&&&&&&&&&& asm(&&&&&&&&&& NOP&);&&&& &&& for(i=1;i&=10;i++)&&&&&&&&&&&& {}&&&&&&&& }}&&&&&&&&&&&&&&&&&&&&&&&&&& //ADC模块&& void Adcsample()&& {
&&&&&& // Specific ADC setup for this example:&&&&&&&&& //AdcRegs.ADCTRL1.bit.ACQ_PS = 0& // Sequential mode: Sample rate&& = 1/[(2+ACQ_PS)*ADC clock in ns]&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& //&&&&&&&&&&&&&&&&&&&& = 1/(3*40ns) =8.3MHz (for 150 MHz SYSCLKOUT)&&&&&& &&&&&&&& //&&&&&&&&&&&&&&&&&&&& = 1/(3*80ns) =4.17MHz (for 100 MHz SYSCLKOUT)&&&&&& &&&&&&&& // If Simultaneous mode enabled: Sample rate = 1/[(3+ACQ_PS)*ADC clock in ns]&&&&&&&&& AdcRegs.ADCTRL3.bit.ADCCLKPS = ADC_CKPS;&&&&&&&&& //AdcRegs.ADCTRL1.bit.SEQ_CASC = 1;&&&&&&& // 1& Cascaded mode&&&&&&&&& AdcRegs.ADCCHSELSEQ1.bit.CONV00 = 0x0; // Setup ADCINA3 as 1st SEQ1 conv.&&&&&&&&& AdcRegs.ADCCHSELSEQ1.bit.CONV01 = 0x0; // Setup ADCINA2 as 2nd SEQ1 conv.&&&&&&&&& //AdcRegs.ADCTRL1.bit.CONT_RUN = 1;&&&&&& // Setup continuous run&&&&&&&&& //AdcRegs.ADCTRL1.bit.SEQ_OVRD = 1;&&&&&& // Enable Sequencer override feature&&&&&&&&& AdcRegs.ADCMAXCONV.bit.MAX_CONV1 = 0x1;& // convert and store in 8 results registers&&&&&&&&& AdcRegs.ADCTRL2.bit.EPWM_SOCA_SEQ1 = 1;// Enable SOCA from ePWM to start SEQ1&&&&&&&&& AdcRegs.ADCTRL2.bit.INT_ENA_SEQ1 = 1;& // Enable SEQ1 interrupt (every EOS)&& }
&&&&&&&&&&&&& //PWM模块
&& void InitEPwm1Example()&& {
&&&& EPwm1Regs.TBPRD =7500; // Period = 900 TBCLK counts&&& &EPwm1Regs.TBPHS.half.TBPHS = 0; // Set Phase register to zero&&& &EPwm1Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Symmetrical mode&&& &EPwm1Regs.TBCTL.bit.PHSEN = TB_DISABLE; // Master module&&& &EPwm1Regs.TBCTL.bit.PRDLD = TB_SHADOW;&&& &EPwm1Regs.TBCTL.bit.SYNCOSEL = TB_CTR_ZERO; // Sync down-stream module&&& &EPwm1Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;&&&&&& // Clock ratio to SYSCLKOUT&&& &EPwm1Regs.TBCTL.bit.CLKDIV = TB_DIV1;
&&& &EPwm1Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;&&& &EPwm1Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;&&& &EPwm1Regs.CMPCTL.bit.LOADAMODE = CC_CTR_ZERO; // load on CTR=Zero&&& &EPwm1Regs.CMPCTL.bit.LOADBMODE = CC_CTR_ZERO; // load on CTR=Zero&&& &EPwm1Regs.AQCTLA.bit.CAU = AQ_SET; // set actions for EPWM1A&&& &EPwm1Regs.AQCTLA.bit.CAD = AQ_CLEAR;&&& &EPwm1Regs.DBCTL.bit.OUT_MODE = DB_FULL_ENABLE; // enable Dead-band module&&& &EPwm1Regs.DBCTL.bit.POLSEL = DB_ACTV_HIC; // Active Hi complementary&&& &EPwm1Regs.DBFED = 200; // FED = 20 TBCLKs&&& &EPwm1Regs.DBRED = 200; // RED = 20 TBCLKs&&& &EPwm1Regs.CMPA.half.CMPA = 3750; // adjust duty for output EPWM1A
&&& &EPwm1Regs.ETSEL.bit.SOCAEN = 1;&&&&&&& // Enable SOC on A group&&& &EPwm1Regs.ETSEL.bit.SOCASEL = 4;&&&&&& // Select SOC from from CPMA on upcount&&& &EPwm1Regs.ETPS.bit.SOCAPRD = 1;&&&&&&& // Generate pulse on 1st event&& }
&& void InitEPwm2Example()&& {&&&& EPwm2Regs.TBPRD = 7500; // Period = 900 TBCLK counts&&& &EPwm2Regs.TBPHS.half.TBPHS = 5000; // Phase = 300/900 * 360 = 120 deg&&& &EPwm2Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Symmetrical mode&&& &EPwm2Regs.TBCTL.bit.PHSEN = TB_ENABLE; // Slave module&&& &EPwm2Regs.TBCTL.bit.PHSDIR = TB_DOWN; // Count DOWN on sync (=120 deg)&&& &EPwm2Regs.TBCTL.bit.PRDLD = TB_SHADOW;&&& &EPwm2Regs.TBCTL.bit.SYNCOSEL = TB_SYNC_IN; // sync flow-through&&& &EPwm2Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;&&&&&& // Clock ratio to SYSCLKOUT&&& &EPwm2Regs.TBCTL.bit.CLKDIV = TB_DIV1;
&&& &EPwm2Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;&&& &EPwm2Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;&&& &EPwm2Regs.CMPCTL.bit.LOADAMODE = CC_CTR_ZERO; // load on CTR=Zero&&& &EPwm2Regs.CMPCTL.bit.LOADBMODE = CC_CTR_ZERO; // load on CTR=Zero&&& &EPwm2Regs.AQCTLA.bit.CAU = AQ_SET; // set actions for EPWM2A&&& &EPwm2Regs.AQCTLA.bit.CAD = AQ_CLEAR;&&& &EPwm2Regs.DBCTL.bit.OUT_MODE = DB_FULL_ENABLE; // enable Dead-band module&&& &EPwm2Regs.DBCTL.bit.POLSEL = DB_ACTV_HIC; // Active Hi Complementary&&& &EPwm2Regs.DBFED = 20; // FED = 20 TBCLKs&&& &EPwm2Regs.DBRED = 20; // RED = 20 TBCLKs&&& &EPwm2Regs.CMPA.half.CMPA = 3750; // adjust duty for output EPWM1A
&& void InitEPwm3Example()&& {
&&& EPwm3Regs.TBPRD = 7500; // Period = 900 TBCLK counts&&& &EPwm3Regs.TBPHS.half.TBPHS = 5000; // Phase = 300/900 * 360 = 120 deg&&& &EPwm3Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Symmetrical mode&&& &EPwm3Regs.TBCTL.bit.PHSEN = TB_ENABLE; // Slave module&&& &EPwm3Regs.TBCTL.bit.PHSDIR = TB_UP; // Count UP on sync (=240 deg)&&& &EPwm3Regs.TBCTL.bit.PRDLD = TB_SHADOW;&&& &EPwm3Regs.TBCTL.bit.SYNCOSEL = TB_SYNC_IN; // sync flow-through&&& &EPwm3Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;&&&&&& // Clock ratio to SYSCLKOUT&&& &EPwm3Regs.TBCTL.bit.CLKDIV = TB_DIV1;
&&& &EPwm3Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;&&& &EPwm3Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;&&& &EPwm3Regs.CMPCTL.bit.LOADAMODE = CC_CTR_ZERO; // load on CTR=Zero&&& &EPwm3Regs.CMPCTL.bit.LOADBMODE = CC_CTR_ZERO; // load on CTR=Zero&&& &EPwm3Regs.AQCTLA.bit.CAU = AQ_SET; // set actions for EPWM3Ai&&& &EPwm3Regs.AQCTLA.bit.CAD = AQ_CLEAR;&&& &EPwm3Regs.DBCTL.bit.OUT_MODE = DB_FULL_ENABLE; // enable Dead-band module&&& &EPwm3Regs.DBCTL.bit.POLSEL = DB_ACTV_HIC; // Active Hi complementary&&& &EPwm3Regs.DBFED = 20; // FED = 20 TBCLKs&&& &EPwm3Regs.DBRED = 20; // RED = 20 TBCLKs&&& &EPwm3Regs.CMPA.half.CMPA = 3750; // adjust duty for output EPWM1A
__interrupt void& adc_isr(void)&& {&&&& Voltage1[ConversionCount] = AdcRegs.ADCRESULT0 &&4;&&&& Voltage2[ConversionCount] = AdcRegs.ADCRESULT1 &&4;
&&&& // If 40 conversions have been logged, start over&&&& if(ConversionCount == 9)&&&& {&&&&&&& ConversionCount = 0;&&&& }&&&& else&&&& {&&&&&&&& ConversionCount++;&&&& }
&&&& // Reinitialize for next ADC sequence&&&& AdcRegs.ADCTRL2.bit.RST_SEQ1 = 1;&&&&&&&& // Reset SEQ1&&&& AdcRegs.ADCST.bit.INT_SEQ1_CLR = 1;&&&&&& // Clear INT SEQ1 bit&&&& PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;&& // Acknowledge interrupt to PIE
//===========================================================================// No more.//===========================================================================
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我是根据的例程设置的，对pwm和adc的寄存器分别配置，但是不知道为什么采集到的波形不对，波形是通过graoh观察的，
这是我设定的参数，不知道问题错在哪，希望TI的大神们帮忙解答一下，谢谢了！
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探花10175分
测试波形怎么不对呢？可以接一个固定电平测试一下，看ADC采样时否正确。
如果此回复解答了您的问题，请在&&这问题是否已被解答？& 点击 & 是 &，谢谢！
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接固定电平的时候，ADC采样是正确的，但是用信号发生器输出一个2V的正弦波时，ADC采样就不对了，采样结果如下：
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