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本帖最后由 一只耳朵怪 于 2018-6-13 16:44 编辑
您好：请问有F28M35x ADC结果使用DMA传输的例程吗? 我之前浏览了F28M35x的数据表、技术参考手册和最新的Controlsuite3.2.9都没有找到F28M35x ADC结果使用DMA传输的例程。 
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8个回答
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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。
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liese 发表于 2018-6-13 02:40 ''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？ |
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脑洞大赛9 发表于 2018-6-13 02:46 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。 |
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//########################################################################### //real sampling and real firlting; //########################################################################### // #include "DSP28x_Project.h" // Device Headerfile and Examples Include File #include #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; ] |
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脑洞大赛9 发表于 2018-6-13 02:46 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。 |
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脑洞大赛9 发表于 2018-6-13 02:46 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。 |
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liese 发表于 2018-6-13 03:15 |
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哎呀，失误失误，我当时打开的文件太多了，把一个类似文件的内容拷贝过来了。 #include "DSP28x_Project.h" // Device Headerfile and Examples Include File #include #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; Uint16 Gpio70_count; #pragma DATA_SECTION(adc_buffer, "DMARAML2") volatile Uint16 adc_buffer[40]; volatile Uint16 *DMADest; volatile Uint16 *DMASource; interrupt void local_DINTCH1_ISR(void); void config_ADC1(void); void main(void) [ InitSysCtrl(); // Init C28 core EALLOW; GpioCtrlRegs.GPCMUX1.bit.GPIO70=0; GpioCtrlRegs.GPCDIR.bit.GPIO70=1; 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 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; PieVectTable.DINTCH1 = &local_DINTCH1_ISR; EDIS; DMADest=adc_buffer; DMASource=&Adc1Result.ADCRESULT0; DMAInitialize(); DMACH1AddrConfig(DMADest,DMASource); DMACH1BurstConfig(3,1,10); DMACH1TransferConfig(9,0xfffd,0xffe3); DMACH1WrapConfig(0xffff,0,0xffff,0); DMACH1ModeConfig(DMA_ADCINT1,PERINT_ENABLE,ONESHOT_DISABLE,CONT_DISABLE, SYNC_DISABLE,SYNC_SRC,OVRFLOW_DISABLE,SIXTEEN_BIT, CHINT_END, CHINT_ENABLE); InitCpuTimers(); ConfigCpuTimer(&CpuTimer0, C28_FREQ, 100); //AD采样间隔 100us //Enable INT // PieCtrlRegs.PIEIER1.bit.INTx1 = 1; IER |= M_INT7; EnableInterrupts(); // EINT; // Enable Global interrupt INTM // ERTM; // Enable Global realtime interrupt DBGM GpioDataRegs.GPCDAT.bit.GPIO70=0; CpuTimer0Regs.TCR.bit.TSS = 0; // start T0 StartDMACH1(); while(1) ; ] __interrupt void local_DINTCH1_ISR(void) [ // if(Gpio70_count++==1000) // [ GpioDataRegs.GPCDAT.bit.GPIO70^=1; // Gpio70_count=0; // ] PieCtrlRegs.PIEACK.all = PIEACK_GROUP7; StartDMACH1(); ] 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; ] |
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