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/****************************************************************************/
/**
*
* @file xadc_polled_printf_example.c
*
* This file contains a design example using the driver functions
* of the XADC driver. The example here shows the driver/device in polled mode
* to check the on-chip temperature and voltages.
*
* @note
*
* This examples also assumes that there is a STDIO device in the system.
*
* <pre>
*
* MODIFICATION HISTORY:
*
* Ver Who Date Changes
* ----- ----- -------- -----------------------------------------------------
* 1.00a ssb 12/22/11 First release based on the XPS/AXI SysMon driver
*
* </pre>
*
*****************************************************************************/
/***************************** Include Files ********************************/
#include "xparameters.h"
#include "xadcps.h"
#include "xstatus.h"
#include "stdio.h"
/************************** Constant Definitions ****************************/
/*
* The following constants map to the XPAR parameters created in the
* xparameters.h file. They are defined here such that a user can easily
* change all the needed parameters in one place.
*/
#define XADC_DEVICE_ID XPAR_XADCPS_0_DEVICE_ID
/**************************** Type Definitions ******************************/
/***************** Macros (Inline Functions) Definitions ********************/
#define printf xil_printf /* Small foot-print printf function */
/************************** Function Prototypes *****************************/
static int XAdcPolledPrintfExample(u16 XAdcDeviceId);
static int XAdcFractionToInt(float FloatNum);
/************************** Variable Definitions ****************************/
static XAdcPs XAdcInst; /* XADC driver instance */
/****************************************************************************/
/**
*
* Main function that invokes the polled example in this file.
*
* @param None.
*
* @return
* - XST_SUCCESS if the example has completed successfully.
* - XST_FAILURE if the example has failed.
*
* @note None.
*
*****************************************************************************/
int main(void)
{
int Status;
/*
* Run the polled example, specify the Device ID that is
* generated in xparameters.h.
*/
Status = XAdcPolledPrintfExample(XADC_DEVICE_ID);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
return XST_SUCCESS;
}
/****************************************************************************/
/**
*
* This function runs a test on the XADC/ADC device using the
* driver APIs.
* This function does the following tasks:
* - Initiate the XADC device driver instance
* - Run self-test on the device
* - Setup the sequence registers to continuously monitor on-chip
* temperature and, VCCPINT, VCCPAUX and VCCPDRO Voltages
* - Setup configuration registers to start the sequence
* - Read the latest on-chip temperature and, VCCPINT, VCCPAUX and VCCPDRO
* Voltages
*
* @param XAdcDeviceId is the XPAR_<SYSMON_ADC_instance>_DEVICE_ID value
* from xparameters.h.
*
* @return
* - XST_SUCCESS if the example has completed successfully.
* - XST_FAILURE if the example has failed.
*
* @note None
*
****************************************************************************/
int XAdcPolledPrintfExample(u16 XAdcDeviceId)
{
int Status;
XAdcPs_Config *ConfigPtr;
u32 TempRawData;
u32 VccPintRawData;
u32 VccPauxRawData;
u32 VccPdroRawData;
float TempData;
float VccPintData;
float VccPauxData;
float MaxData;
float MinData;
XAdcPs *XAdcInstPtr = &XAdcInst;
printf("\r\nEntering the XAdc Polled Example. \r\n");
/*
* Initialize the XAdc driver.
*/
ConfigPtr = XAdcPs_LookupConfig(XAdcDeviceId);
if (ConfigPtr == NULL) {
return XST_FAILURE;
}
XAdcPs_CfgInitialize(XAdcInstPtr, ConfigPtr,
ConfigPtr->BaseAddress);
/*
* Self Test the XADC/ADC device
*/
Status = XAdcPs_SelfTest(XAdcInstPtr);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/*
* Disable the Channel Sequencer before configuring the Sequence
* registers.
*/
XAdcPs_SetSequencerMode(XAdcInstPtr, XADCPS_SEQ_MODE_SAFE);
/*
* Read the on-chip Temperature Data (Current/Maximum/Minimum)
* from the ADC data registers.
*/
TempRawData = XAdcPs_GetAdcData(XAdcInstPtr, XADCPS_CH_TEMP);
TempData = XAdcPs_RawToTemperature(TempRawData);
printf("\r\nThe Current Temperature is %0d.%03d Centigrades.\r\n",
(int)(TempData), XAdcFractionToInt(TempData));
TempRawData = XAdcPs_GetMinMaxMeasurement(XAdcInstPtr, XADCPS_MAX_TEMP);
MaxData = XAdcPs_RawToTemperature(TempRawData);
printf("The Maximum Temperature is %0d.%03d Centigrades. \r\n",
(int)(MaxData), XAdcFractionToInt(MaxData));
TempRawData = XAdcPs_GetMinMaxMeasurement(XAdcInstPtr, XADCPS_MIN_TEMP);
MinData = XAdcPs_RawToTemperature(TempRawData & 0xFFF0);
printf("The Minimum Temperature is %0d.%03d Centigrades. \r\n",
(int)(MinData), XAdcFractionToInt(MinData));
/*
* Read the VccPint Votage Data (Current/Maximum/Minimum) from the
* ADC data registers.
*/
VccPintRawData = XAdcPs_GetAdcData(XAdcInstPtr, XADCPS_CH_VCCPINT);
VccPintData = XAdcPs_RawToVoltage(VccPintRawData);
printf("\r\nThe Current VCCPINT is %0d.%03d Volts. \r\n",
(int)(VccPintData), XAdcFractionToInt(VccPintData));
VccPintRawData = XAdcPs_GetMinMaxMeasurement(XAdcInstPtr,
XADCPS_MAX_VCCPINT);
MaxData = XAdcPs_RawToVoltage(VccPintRawData);
printf("The Maximum VCCPINT is %0d.%03d Volts. \r\n",
(int)(MaxData), XAdcFractionToInt(MaxData));
VccPintRawData = XAdcPs_GetMinMaxMeasurement(XAdcInstPtr,
XADCPS_MIN_VCCPINT);
MinData = XAdcPs_RawToVoltage(VccPintRawData);
printf("The Minimum VCCPINT is %0d.%03d Volts. \r\n",
(int)(MinData), XAdcFractionToInt(MinData));
/*
* Read the VccPaux Votage Data (Current/Maximum/Minimum) from the
* ADC data registers.
*/
VccPauxRawData = XAdcPs_GetAdcData(XAdcInstPtr, XADCPS_CH_VCCPAUX);
VccPauxData = XAdcPs_RawToVoltage(VccPauxRawData);
printf("\r\nThe Current VCCPAUX is %0d.%03d Volts. \r\n",
(int)(VccPauxData), XAdcFractionToInt(VccPauxData));
VccPauxRawData = XAdcPs_GetMinMaxMeasurement(XAdcInstPtr,
XADCPS_MAX_VCCPAUX);
MaxData = XAdcPs_RawToVoltage(VccPauxRawData);
printf("The Maximum VCCPAUX is %0d.%03d Volts. \r\n",
(int)(MaxData), XAdcFractionToInt(MaxData));
VccPauxRawData = XAdcPs_GetMinMaxMeasurement(XAdcInstPtr,
XADCPS_MIN_VCCPAUX);
MinData = XAdcPs_RawToVoltage(VccPauxRawData);
printf("The Minimum VCCPAUX is %0d.%03d Volts. \r\n\r\n",
(int)(MinData), XAdcFractionToInt(MinData));
/*
* Read the VccPdro Votage Data (Current/Maximum/Minimum) from the
* ADC data registers.
*/
VccPdroRawData = XAdcPs_GetAdcData(XAdcInstPtr, XADCPS_CH_VCCPDRO);
VccPintData = XAdcPs_RawToVoltage(VccPdroRawData);
printf("\r\nThe Current VCCPDDRO is %0d.%03d Volts. \r\n",
(int)(VccPintData), XAdcFractionToInt(VccPintData));
VccPdroRawData = XAdcPs_GetMinMaxMeasurement(XAdcInstPtr,
XADCPS_MAX_VCCPDRO);
MaxData = XAdcPs_RawToVoltage(VccPdroRawData);
printf("The Maximum VCCPDDRO is %0d.%03d Volts. \r\n",
(int)(MaxData), XAdcFractionToInt(MaxData));
VccPdroRawData = XAdcPs_GetMinMaxMeasurement(XAdcInstPtr,
XADCPS_MIN_VCCPDRO);
MinData = XAdcPs_RawToVoltage(VccPdroRawData);
printf("The Minimum VCCPDDRO is %0d.%03d Volts. \r\n",
(int)(MinData), XAdcFractionToInt(MinData));
printf("Exiting the XAdc Polled Example. \r\n");
return XST_SUCCESS;
}
/****************************************************************************/
/*
*
* This function converts the fraction part of the given floating point number
* (after the decimal point)to an integer.
*
* @param FloatNum is the floating point number.
*
* @return Integer number to a precision of 3 digits.
*
* @note
* This function is used in the printing of floating point data to a STDIO device
* using the xil_printf function. The xil_printf is a very small foot-print
* printf function and does not support the printing of floating point numbers.
*
*****************************************************************************/
int XAdcFractionToInt(float FloatNum)
{
float Temp;
Temp = FloatNum;
if (FloatNum < 0) {
Temp = -(FloatNum);
}
return( ((int)((Temp -(float)((int)Temp)) * (1000.0f))));
}