MiZ702学习笔记9——XADC采集片上数据PS版

发表于 2016/1/4 8:17:15 阅读（3158）

这次借助zynq的内嵌的XADC来采集zynq内部的一些参数：

•VCCINT：内部PL核心电压

•VCCAUX：辅助PL电压

•VREFP：XADC正参考电压

•VREFN：XADC负参考电压

•VCCBram：PL BRAM电压

•VCCPInt：PS内部核心电压

•VCCPAux：PS辅助电压

•VCCDdr：DDR RAM的工作电压

这次这个程序的开发流程和之前讲的别无二致，希望大家能够完全的熟悉这个流程~~

还是和往常一样，新建一个Block Design，并且向其中添加zynq核以及XADC IP。

对XADC核进行设置

依次执行这两项：

执行之后如下图所示：

依次执行Generate Output Products 和 Create HDL Wrapper

最后编译，直到生成bit文件。

导出硬件，并通过vivado打开SDK。

进入SDK，如何新建工程，就不再次啰嗦了，请参考之前的章节。新建main.c之后为其添加代码如下~~（这段代码是参考国外的一个大神Adam写的，向大神致敬~~）

#include //#include "platform.h" #include "xadcps.h" #include "xil_types.h" #define XPAR_AXI_XADC_0_DEVICE_ID 0 //void print(char *str); static XAdcPs XADCMonInst; int main() { XAdcPs_Config *ConfigPtr; XAdcPs *XADCInstPtr = &XADCMonInst; //status of initialisation int Status_ADC; //temperature readings u32 TempRawData; float TempData; //Vcc Int readings u32 VccIntRawData; float VccIntData; //Vcc Aux readings u32 VccAuxRawData; float VccAuxData; //Vbram readings u32 VBramRawData; float VBramData; //VccPInt readings u32 VccPIntRawData; float VccPIntData; //VccPAux readings u32 VccPAuxRawData; float VccPAuxData; //Vddr readings u32 VDDRRawData; float VDDRData; // init_platform(); //printf("Adam Edition MicroZed Using Vivado How To Printf \n\r"); printf("新年快乐~~！！！2015-12-31 \n\r"); //XADC initilization ConfigPtr = XAdcPs_LookupConfig(XPAR_AXI_XADC_0_DEVICE_ID); if (ConfigPtr == NULL) { return XST_FAILURE; } Status_ADC = XAdcPs_CfgInitialize(XADCInstPtr,ConfigPtr,ConfigPtr->BaseAddress); if(XST_SUCCESS != Status_ADC){ print("ADC INIT FAILED\n\r"); return XST_FAILURE; } //self test Status_ADC = XAdcPs_SelfTest(XADCInstPtr); if (Status_ADC != XST_SUCCESS) { return XST_FAILURE; } //stop sequencer XAdcPs_SetSequencerMode(XADCInstPtr,XADCPS_SEQ_MODE_SINGCHAN); //disable alarms XAdcPs_SetAlarmEnables(XADCInstPtr, 0x0); //configure sequencer to just sample internal on chip parameters XAdcPs_SetSeqInputMode(XADCInstPtr, XADCPS_SEQ_MODE_SAFE); //configure the channel enables we want to monitor XAdcPs_SetSeqChEnables(XADCInstPtr,XADCPS_CH_TEMP|XADCPS_CH_VCCINT|XADCPS_CH_VCCAUX|XADCPS_CH_VBRAM|XADCPS_CH_VCCPINT| XADCPS_CH_VCCPAUX|XADCPS_CH_VCCPDRO); while(1) { TempRawData = XAdcPs_GetAdcData(XADCInstPtr, XADCPS_CH_TEMP); TempData = XAdcPs_RawToTemperature(TempRawData); printf("Raw Temp %lu Real Temp %f \n\r", TempRawData, TempData); VccIntRawData = XAdcPs_GetAdcData(XADCInstPtr, XADCPS_CH_VCCINT); VccIntData = XAdcPs_RawToVoltage(VccIntRawData); printf("Raw VccInt %lu Real VccInt %f \n\r", VccIntRawData,VccIntData); VccAuxRawData = XAdcPs_GetAdcData(XADCInstPtr, XADCPS_CH_VCCAUX); VccAuxData = XAdcPs_RawToVoltage(VccAuxRawData); printf("Raw VccAux %lu Real VccAux %f \n\r", VccAuxRawData,VccAuxData); VBramRawData = XAdcPs_GetAdcData(XADCInstPtr, XADCPS_CH_VBRAM); VBramData = XAdcPs_RawToVoltage(VBramRawData); printf("Raw VccBram %lu Real VccBram %f \n\r", VBramRawData, VBramData); VccPIntRawData = XAdcPs_GetAdcData(XADCInstPtr, XADCPS_CH_VCCPINT); VccPIntData = XAdcPs_RawToVoltage(VccPIntRawData); printf("Raw VccPInt %lu Real VccPInt %f \n\r", VccPIntRawData, VccPIntData); VccPAuxRawData = XAdcPs_GetAdcData(XADCInstPtr, XADCPS_CH_VCCPAUX); VccPAuxData = XAdcPs_RawToVoltage(VccPAuxRawData); printf("Raw VccPAux %lu Real VccPAux %f \n\r", VccPAuxRawData, VccPAuxData); VDDRRawData = XAdcPs_GetAdcData(XADCInstPtr, XADCPS_CH_VCCPDRO); VDDRData = XAdcPs_RawToVoltage(VDDRRawData); printf("Raw VccDDR %lu Real VccDDR %f \n\r", VDDRRawData, VDDRData); } return 0; }

1. Use the "XAdcPs_SelfTest()" 这个自检就不用说了

2. Use "XAdcPs_SetSequencerMode()" 这个是设置采样模式。

3. Use "XAdcPs_SetAlarmEnables()" 这个是设置采样值报警的，直接关闭，不需要报警

4. Use "XAdcPs_SetSeqInputMode()" 这个是设置输入模式的

5. Use "XAdcPs_SetSeqChEnables() 这个是使能采样通道的

编译之后，记得先下载bit文件~~连上串口，然后就可以执行程序了：