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器件型号：TMS320F28027 我尝试使用 ADC 来读取特定的电压。 已设置的 ADC 如下：
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voidHAL_setupAdcs(HAL_Handle handle) { HAL_Obj *obj = (HAL_Obj *)handle; // disable the ADCs ADC_disable(obj->adcHandle); // power up the bandgap circuit ADC_enableBandGap(obj->adcHandle); // set the ADC voltage reference source to internal ADC_setVoltRefSrc(obj->adcHandle,ADC_VoltageRefSrc_Int); // enable the ADC reference buffers ADC_enableRefBuffers(obj->adcHandle); // power up the ADCs ADC_powerUp(obj->adcHandle); // enable the ADCs ADC_enable(obj->adcHandle); // set the ADC interrupt pulse generation to prior ADC_setIntPulseGenMode(obj->adcHandle,ADC_IntPulseGenMode_Prior); // set the temperature sensor source to external ADC_setTempSensorSrc(obj->adcHandle,ADC_TempSensorSrc_Ext); // configure the interrupt sources ADC_disableInt(obj->adcHandle,ADC_IntNumber_1); ADC_setIntMode(obj->adcHandle,ADC_IntNumber_1,ADC_IntMode_ClearFlag); ADC_setIntSrc(obj->adcHandle,ADC_IntNumber_1,ADC_IntSrc_EOC7); //configure the SOCs for boostxldrv8305evm_revA // sample the first sample twice due to errata sprz342f // ISEN_A ADC_setSocChanNumber(obj->adcHandle,ADC_SocNumber_0,ADC_SocChanNumber_B1); ADC_setSocTrigSrc(obj->adcHandle,ADC_SocNumber_0,ADC_SocTrigSrc_EPWM1_ADCSOCA); ADC_setSocSampleDelay(obj->adcHandle,ADC_SocNumber_0,ADC_SocSampleDelay_7_cycles); // ISEN_A ADC_setSocChanNumber(obj->adcHandle,ADC_SocNumber_1,ADC_SocChanNumber_B1); ADC_setSocTrigSrc(obj->adcHandle,ADC_SocNumber_1,ADC_SocTrigSrc_EPWM1_ADCSOCA); ADC_setSocSampleDelay(obj->adcHandle,ADC_SocNumber_1,ADC_SocSampleDelay_7_cycles); // ISEN_B ADC_setSocChanNumber(obj->adcHandle,ADC_SocNumber_2,ADC_SocChanNumber_B3); ADC_setSocTrigSrc(obj->adcHandle,ADC_SocNumber_2,ADC_SocTrigSrc_EPWM1_ADCSOCA); ADC_setSocSampleDelay(obj->adcHandle,ADC_SocNumber_2,ADC_SocSampleDelay_7_cycles); // ISEN_C ADC_setSocChanNumber(obj->adcHandle,ADC_SocNumber_3,ADC_SocChanNumber_B7); ADC_setSocTrigSrc(obj->adcHandle,ADC_SocNumber_3,ADC_SocTrigSrc_EPWM1_ADCSOCA); ADC_setSocSampleDelay(obj->adcHandle,ADC_SocNumber_3,ADC_SocSampleDelay_7_cycles); // VSEN_A ADC_setSocChanNumber(obj->adcHandle,ADC_SocNumber_4,ADC_SocChanNumber_A7); ADC_setSocTrigSrc(obj->adcHandle,ADC_SocNumber_4,ADC_SocTrigSrc_EPWM1_ADCSOCA); ADC_setSocSampleDelay(obj->adcHandle,ADC_SocNumber_4,ADC_SocSampleDelay_7_cycles); // VSEN_B ADC_setSocChanNumber(obj->adcHandle,ADC_SocNumber_5,ADC_SocChanNumber_A3); ADC_setSocTrigSrc(obj->adcHandle,ADC_SocNumber_5,ADC_SocTrigSrc_EPWM1_ADCSOCA); ADC_setSocSampleDelay(obj->adcHandle,ADC_SocNumber_5,ADC_SocSampleDelay_7_cycles); // VSEN_C ADC_setSocChanNumber(obj->adcHandle,ADC_SocNumber_6,ADC_SocChanNumber_A1); ADC_setSocTrigSrc(obj->adcHandle,ADC_SocNumber_6,ADC_SocTrigSrc_EPWM1_ADCSOCA); ADC_setSocSampleDelay(obj->adcHandle,ADC_SocNumber_6,ADC_SocSampleDelay_7_cycles); // V_PVDD ADC_setSocChanNumber(obj->adcHandle,ADC_SocNumber_7,ADC_SocChanNumber_A0); ADC_setSocTrigSrc(obj->adcHandle,ADC_SocNumber_7,ADC_SocTrigSrc_EPWM1_ADCSOCA); ADC_setSocSampleDelay(obj->adcHandle,ADC_SocNumber_7,ADC_SocSampleDelay_7_cycles); //ADC for switch ADC_setSocChanNumber (obj->adcHandle, ADC_SocNumber_8, ADC_SocChanNumber_A4); //set SOC0 channel select to ADCINA4 ADC_setSocChanNumber (obj->adcHandle, ADC_SocNumber_9, ADC_SocChanNumber_A4); ADC_setSocTrigSrc(obj->adcHandle, ADC_SocNumber_8, ADC_SocTrigSrc_EPWM1_ADCSOCA); //set SOC0 start trigger on EPWM1A, due to round-robin SOC0 converts first then SOC1 ADC_setSocTrigSrc(obj->adcHandle, ADC_SocNumber_9, ADC_SocTrigSrc_EPWM1_ADCSOCA); //set SOC1 start trigger on EPWM1A, due to round-robin SOC0 converts first then SOC1 ADC_setSocSampleDelay(obj->adcHandle, ADC_SocNumber_8, ADC_SocSampleDelay_7_cycles); //set SOC0 S/H Window to 7 ADC Clock Cycles, (6 ACQPS plus 1) ADC_setSocSampleDelay(obj->adcHandle, ADC_SocNumber_9, ADC_SocSampleDelay_7_cycles); //set SOC1 S/H Window to 7 ADC Clock Cycles, (6 ACQPS plus 1) // //SWITCH // ADC_setSocChanNumber(obj->adcHandle,ADC_SocNumber_8,ADC_SocChanNumber_A2); // ADC_setSocTrigSrc(obj->adcHandle,ADC_SocNumber_8,ADC_SocTrigSrc_EPWM1_ADCSOCA); // ADC_setSocSampleDelay(obj->adcHandle,ADC_SocNumber_8,ADC_SocSampleDelay_7_cycles); return; } // end of HAL_setupAdcs() function |
在主代码中、我创建了一个中断、使用从 ADC 示例中获得的以下函数来获得 ADC 上的电压计数：
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__interrupt voidadc_isr(void) { //discard ADCRESULT0 as part of the workaround to the 1st sample errata for rev0 Voltage1[ConversionCount] = ADC_readResult(myAdc, ADC_ResultNumber_8); Voltage2[ConversionCount] = ADC_readResult(myAdc, ADC_ResultNumber_9); // If 10 conversions have been logged, start over if(ConversionCount == 9) { ConversionCount = 0; } else { ConversionCount++; } // Clear ADCINT1 flag reinitialize for next SOC ADC_clearIntFlag(myAdc, ADC_IntNumber_1); // Acknowledge interrupt to PIE PIE_clearInt(myPie, PIE_GroupNumber_10); return; } |
我将获得一些高于4096的随机值，该值应介于0-3.3V 之间。我的 ADC 引脚上的电压几乎为1V。
我有一个电机驱动器8305、将28027用作控制器。
我不确定这是否是设置 ADC 的正确方法、但如果可能的话、如果有人在设置 ADC、可以参考文档。
此致、
Rajan Joshi
