有F28M35x ADC结果使用DMA传输的例程吗

反正我是没有找到，自己写吧，把例程中的dma_ram_to_ram的参数稍微改一下，搬到workshop的lab4-1，稍微修改就差不多了。碰巧我前两天也在做这一块。

''搬到workshop的lab4-1'',没明白什么意思。

除例程中的dma_ram_to_ram外，最值得参考的应该是Example_2833xAdcToDMA.c了。可惜F28M35x中的ADC模块优化改进了，Example_2833xAdcToDMA.c中的代码不能直接使用。

您的F28M35x ADC结果使用DMA传输的程序写出来了吗？可否共享交流一下？

workshop是TI给的一些实验以及例程，lab4-1是关于ADC配置的。我这边有，但是里面交杂的有其他模块的程序就是。

//###########################################################################
//real sampling and real firlting;
//###########################################################################
//

#include "DSP28x_Project.h" // Device Headerfile and Examples Include File
#include <string.h>
#include "FPU.h"
#include "math.h"
#include "float.h"
#include "config.h"

#define C28_FREQ 150 //C28 CPU frequency in MHz

extern Uint16 RamfuncsLoadStart;
extern Uint16 RamfuncsLoadSize;
extern Uint16 RamfuncsRunStart;

extern float Value_num;
void config_ADC1(void);

void main(void)
{
InitSysCtrl(); // Init C28 core
EALLOW;
GpioCtrlRegs.GPAMUX1.bit.GPIO0 = 1; // GPIO0 = ePWM1A
GpioCtrlRegs.GPAMUX1.bit.GPIO1 = 1; // GPIO0 = ePWM1B
GpioCtrlRegs.GPAMUX1.bit.GPIO2 = 1; // GPIO0 = ePWM2A
GpioCtrlRegs.GPAMUX1.bit.GPIO3 = 1; // GPIO0 = ePWM2B
EDIS;

// Copy time critical code and Flash setup code to RAM
// This includes the following functions: InitFlash();
// The RamfuncsLoadStart, RamfuncsLoadSize and RamfuncsRunStart
// symbols are created by the linker. Refer to the device .cmd file.
memcpy(&RamfuncsRunStart, &RamfuncsLoadStart, (size_t)&RamfuncsLoadSize);

// Call Flash Initialization to setup flash waitstates
// This function must reside in RAM
InitFlash();

Init_firFP();
Value_num=CC_TBPRD/4095.0; // CMPA/B=(fir_A0/2^12)*CC_TBPRD=fir_A0*Value_num

InitAdc1();
config_ADC1();

config_PWM();

DINT;
InitPieCtrl();
IER=0x0000;
IFR=0x0000;
InitPieVectTable();
EALLOW; // This is needed to write to EALLOW protected registers
PieVectTable.ADCINT1 = &ADCINT1_ISR;
EDIS;

InitCpuTimers();
ConfigCpuTimer(&CpuTimer0, C28_FREQ, 100); //AD采样间隔 100us
//Enable INT
PieCtrlRegs.PIEIER1.bit.INTx1 = 1;
IER |= M_INT1;
EINT; // Enable Global interrupt INTM
ERTM; // Enable Global realtime interrupt DBGM

CpuTimer0Regs.TCR.bit.TSS = 0; // start T0

while(1) ;
}

void config_ADC1(void)
{

InitAdc1();
EALLOW;
Adc1Regs.ADCCTL2.bit.ADCNONOVERLAP = 1; // Enable non-overlap mode i.e. Overlap of sample is not allowed

Adc1Regs.ADCCTL1.bit.INTPULSEPOS = 1; // ADCINT1 trips after AdcResults latch
Adc1Regs.INTSEL1N2.bit.INT1E = 1; // Enabled ADCINT1
Adc1Regs.INTSEL1N2.bit.INT1CONT = 1; // Disable ADCINT1 Continuous mode
Adc1Regs.INTSEL1N2.bit.INT1SEL = 3; // setup EOC0 to trigger ADCINT1 to fire

AnalogSysctrlRegs.TRIG1SEL.all = 1; // Assigning TINT0 to ADC-TRIGGER 1
AnalogSysctrlRegs.CCLKCTL.all =ACLKDIV4; //ASYSCLK=PLLCLK/ACLKDIV

Adc1Regs.ADCSOC0CTL.bit.CHSEL = 0; // set SOC0 channel select to ADC1in_A0
Adc1Regs.ADCSOC0CTL.bit.TRIGSEL = 5; // Set SOC0 start trigger1
Adc1Regs.ADCSOC0CTL.bit.ACQPS = 6; // set SOC0 S/H Window to 7 ADC Clock Cycles, (6 ACQPS + 1)

Adc1Regs.ADCSOC1CTL.bit.CHSEL = 8; // set SOC1 channel select to ADC1in_A0
Adc1Regs.ADCSOC1CTL.bit.TRIGSEL = 5; // Set SOC1 start trigger1
Adc1Regs.ADCSOC1CTL.bit.ACQPS = 6; // set SOC1 S/H Window to 7 ADC Clock Cycles, (6 ACQPS + 1)

Adc1Regs.ADCSOC2CTL.bit.CHSEL = 2; // set SOC2 channel select to ADC1in_A0
Adc1Regs.ADCSOC2CTL.bit.TRIGSEL = 5; // Set SOC2 start trigger1
Adc1Regs.ADCSOC2CTL.bit.ACQPS = 6; // set SOC2 S/H Window to 7 ADC Clock Cycles, (6 ACQPS + 1)

Adc1Regs.ADCSOC3CTL.bit.CHSEL = 3; // set SOC3 channel select to ADC1in_A0
Adc1Regs.ADCSOC3CTL.bit.TRIGSEL = 5; // Set SOC3 start trigger1
Adc1Regs.ADCSOC3CTL.bit.ACQPS = 6; // set SOC3 S/H Window to 7 ADC Clock Cycles, (6 ACQPS + 1)

EDIS;
}

上面程序是ADC4通道的采样结果，放在RAM L2的adc_buffer里，其中config_PWM();这个函数忘记注释掉了，这个你不需要用。

Init_firFP();
Value_num=CC_TBPRD/4095.0; // CMPA/B=(fir_A0/2^12)*CC_TBPRD=fir_A0*Value_num

这两行也要去了，不需要用。

qiuhong yao 说：

//###########################################################################
//real sampling and real firlting;
//###########################################################################
//

#include "DSP28x_Project.h" // Device Headerfile and Examples Include File
#include <string.h>
#include "FPU.h"
#include "math.h"
#include "float.h"
#include "config.h"

#define C28_FREQ 150 //C28 CPU frequency in MHz

extern Uint16 RamfuncsLoadStart;
extern Uint16 RamfuncsLoadSize;
extern Uint16 RamfuncsRunStart;

extern float Value_num;
void config_ADC1(void);

void main(void)
{
InitSysCtrl(); // Init C28 core
EALLOW;
GpioCtrlRegs.GPAMUX1.bit.GPIO0 = 1; // GPIO0 = ePWM1A
GpioCtrlRegs.GPAMUX1.bit.GPIO1 = 1; // GPIO0 = ePWM1B
GpioCtrlRegs.GPAMUX1.bit.GPIO2 = 1; // GPIO0 = ePWM2A
GpioCtrlRegs.GPAMUX1.bit.GPIO3 = 1; // GPIO0 = ePWM2B
EDIS;

// Copy time critical code and Flash setup code to RAM
// This includes the following functions: InitFlash();
// The RamfuncsLoadStart, RamfuncsLoadSize and RamfuncsRunStart
// symbols are created by the linker. Refer to the device .cmd file.
memcpy(&RamfuncsRunStart, &RamfuncsLoadStart, (size_t)&RamfuncsLoadSize);

// Call Flash Initialization to setup flash waitstates
// This function must reside in RAM
InitFlash();

Init_firFP();
Value_num=CC_TBPRD/4095.0; // CMPA/B=(fir_A0/2^12)*CC_TBPRD=fir_A0*Value_num

InitAdc1();
config_ADC1();

config_PWM();

DINT;
InitPieCtrl();
IER=0x0000;
IFR=0x0000;
InitPieVectTable();
EALLOW; // This is needed to write to EALLOW protected registers
PieVectTable.ADCINT1 = &ADCINT1_ISR;
EDIS;

InitCpuTimers();
ConfigCpuTimer(&CpuTimer0, C28_FREQ, 100); //AD采样间隔 100us
//Enable INT
PieCtrlRegs.PIEIER1.bit.INTx1 = 1;
IER |= M_INT1;
EINT; // Enable Global interrupt INTM
ERTM; // Enable Global realtime interrupt DBGM

CpuTimer0Regs.TCR.bit.TSS = 0; // start T0

while(1) ;
}

void config_ADC1(void)
{

InitAdc1();
EALLOW;
Adc1Regs.ADCCTL2.bit.ADCNONOVERLAP = 1; // Enable non-overlap mode i.e. Overlap of sample is not allowed

Adc1Regs.ADCCTL1.bit.INTPULSEPOS = 1; // ADCINT1 trips after AdcResults latch
Adc1Regs.INTSEL1N2.bit.INT1E = 1; // Enabled ADCINT1
Adc1Regs.INTSEL1N2.bit.INT1CONT = 1; // Disable ADCINT1 Continuous mode
Adc1Regs.INTSEL1N2.bit.INT1SEL = 3; // setup EOC0 to trigger ADCINT1 to fire

AnalogSysctrlRegs.TRIG1SEL.all = 1; // Assigning TINT0 to ADC-TRIGGER 1
AnalogSysctrlRegs.CCLKCTL.all =ACLKDIV4; //ASYSCLK=PLLCLK/ACLKDIV

Adc1Regs.ADCSOC0CTL.bit.CHSEL = 0; // set SOC0 channel select to ADC1in_A0
Adc1Regs.ADCSOC0CTL.bit.TRIGSEL = 5; // Set SOC0 start trigger1
Adc1Regs.ADCSOC0CTL.bit.ACQPS = 6; // set SOC0 S/H Window to 7 ADC Clock Cycles, (6 ACQPS + 1)

Adc1Regs.ADCSOC1CTL.bit.CHSEL = 8; // set SOC1 channel select to ADC1in_A0
Adc1Regs.ADCSOC1CTL.bit.TRIGSEL = 5; // Set SOC1 start trigger1
Adc1Regs.ADCSOC1CTL.bit.ACQPS = 6; // set SOC1 S/H Window to 7 ADC Clock Cycles, (6 ACQPS + 1)

Adc1Regs.ADCSOC2CTL.bit.CHSEL = 2; // set SOC2 channel select to ADC1in_A0
Adc1Regs.ADCSOC2CTL.bit.TRIGSEL = 5; // Set SOC2 start trigger1
Adc1Regs.ADCSOC2CTL.bit.ACQPS = 6; // set SOC2 S/H Window to 7 ADC Clock Cycles, (6 ACQPS + 1)

Adc1Regs.ADCSOC3CTL.bit.CHSEL = 3; // set SOC3 channel select to ADC1in_A0
Adc1Regs.ADCSOC3CTL.bit.TRIGSEL = 5; // Set SOC3 start trigger1
Adc1Regs.ADCSOC3CTL.bit.ACQPS = 6; // set SOC3 S/H Window to 7 ADC Clock Cycles, (6 ACQPS + 1)

EDIS;
}

首先感谢您的积极解答和分享。但我注意到以上代码里没有DMA传输的设置。您的F28M35x ADC结果“使用DMA传输”的程序写出来了吗？可否分享交流一下？