eive-obsw/bsp_q7s/xadc/Xadc.h
2022-03-13 16:32:40 +01:00

108 lines
3.5 KiB
C++

#ifndef BSP_Q7S_XADC_XADC_H_
#define BSP_Q7S_XADC_XADC_H_
#include <string>
#include "fsfw/returnvalues/HasReturnvaluesIF.h"
namespace xadc {
using namespace std;
static const string iioPath = "/sys/bus/iio/devices/iio:device1";
namespace file {
static const string tempOffset = iioPath + "/in_temp0_offset";
static const string tempRaw = iioPath + "/in_temp0_raw";
static const string tempScale = iioPath + "/in_temp0_scale";
static const string vccintRaw = iioPath + "/in_voltage0_vccint_raw";
static const string vccintScale = iioPath + "/in_voltage0_vccint_scale";
static const string vccauxRaw = iioPath + "/in_voltage1_vccaux_raw";
static const string vccauxScale = iioPath + "/in_voltage1_vccaux_scale";
static const string vccbramRaw = iioPath + "/in_voltage2_vccbram_raw";
static const string vccbramScale = iioPath + "/in_voltage2_vccbram_scale";
static const string vccpintRaw = iioPath + "/in_voltage3_vccpint_raw";
static const string vccpintScale = iioPath + "/in_voltage3_vccpint_scale";
static const string vccpauxRaw = iioPath + "/in_voltage4_vccpaux_raw";
static const string vccpauxScale = iioPath + "/in_voltage4_vccpaux_scale";
static const string vccoddrRaw = iioPath + "/in_voltage5_vccoddr_raw";
static const string vccoddrScale = iioPath + "/in_voltage5_vccoddr_scale";
static const string vrefpRaw = iioPath + "/in_voltage6_vrefp_raw";
static const string vrefpScale = iioPath + "/in_voltage6_vrefp_scale";
static const string vrefnRaw = iioPath + "/in_voltage7_vrefn_raw";
static const string vrefnScale = iioPath + "/in_voltage7_vrefn_scale";
} // namespace file
} // namespace xadc
/**
* @brief Class providing access to the data generated by the analog mixed signal module (XADC).
*
* @details Details about the XADC peripheral of the Zynq-7020 can be found in the UG480 "7-Series
* FPGAs and Zynq-7000 SoC XADC Dual 12-Bit 1 MSPS Analog-to-Digital Converter" user guide
* from Xilinx.
*
* @author J. Meier
*/
class Xadc {
public:
/**
* @brief Constructor
*/
Xadc();
virtual ~Xadc();
/**
* @brief Returns on-chip temperature degree celcius
*/
ReturnValue_t getTemperature(float& temperature);
/**
* @brief Returns PS internal logic supply voltage in millivolts
*/
ReturnValue_t getVccPint(float& vccPint);
/**
* @brief Returns PS auxiliary supply voltage in millivolts
*/
ReturnValue_t getVccPaux(float& vccPaux);
/**
* @brief Returns PL internal supply voltage in millivolts
*/
ReturnValue_t getVccInt(float& vccInt);
/**
* @brief Returns PL auxiliary supply voltage in millivolts
*/
ReturnValue_t getVccAux(float& vccAux);
/**
* @brief Returns PL block RAM supply voltage in millivolts
*/
ReturnValue_t getVccBram(float& vccBram);
/**
* @brief Returns the PS DDR I/O supply voltage
*/
ReturnValue_t getVccOddr(float& vcOddr);
/**
* @brief Returns XADC reference input voltage relative to GND in millivolts
*/
ReturnValue_t getVrefp(float& vrefp);
/**
* @brief Returns negative reference input voltage. Should normally be 0 V.
*/
ReturnValue_t getVrefn(float& vrefn);
private:
// Maximum length of the string representation of a value in a xadc sysfs file
static const uint8_t MAX_STR_LENGTH = 15;
ReturnValue_t readVoltageFromSysfs(std::string rawFile, std::string scaleFile, float& voltage);
float calculateVoltage(int raw, float scale);
template <typename T>
ReturnValue_t readValFromFile(const char* filename, T& val);
};
#endif /* BSP_Q7S_XADC_XADC_H_ */