Vadim Kimlaychuk / AD5933

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ad5933.h@0:6a71184e6f66, 2015-05-11 (annotated)

Committer:
dipi
Date:
Mon May 11 13:17:10 2015 +0000
Revision:
0:6a71184e6f66
Child:
1:b6eb241a5fa3
First Untested Version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dipi 0:6a71184e6f66 1 #ifndef MBED_AD5933_H
dipi 0:6a71184e6f66 2 #include "mbed.h"
dipi 0:6a71184e6f66 3 #define MBED_AD5933_H
dipi 0:6a71184e6f66 4
dipi 0:6a71184e6f66 5
dipi 0:6a71184e6f66 6 /** AD5933 class.
dipi 0:6a71184e6f66 7 * Library to communicate with the AD5933 impedance meter chip.
dipi 0:6a71184e6f66 8 */
dipi 0:6a71184e6f66 9 class AD5933
dipi 0:6a71184e6f66 10 {
dipi 0:6a71184e6f66 11 public:
dipi 0:6a71184e6f66 12 /** Create AD5933 instance
dipi 0:6a71184e6f66 13 @param sda I2C data line pin
dipi 0:6a71184e6f66 14 @param scl I2C clock line pin
dipi 0:6a71184e6f66 15 @param extClk source of the Clock signal: true = external; false = internal
dipi 0:6a71184e6f66 16 */
dipi 0:6a71184e6f66 17 AD5933(PinName sda, PinName scl, bool extClk);
dipi 0:6a71184e6f66 18
dipi 0:6a71184e6f66 19 /** Set all parameters concerning a frequency sweep.
dipi 0:6a71184e6f66 20 @param startFreq initial frequency (max 100000Hz)
dipi 0:6a71184e6f66 21 @param stepFreq stepsize of increment in frequency
dipi 0:6a71184e6f66 22 @param nrOfSteps number of increments
dipi 0:6a71184e6f66 23 */
dipi 0:6a71184e6f66 24 bool setFrequencySweepParam(unsigned int startFreq, unsigned int stepFreq, unsigned int nrOfSteps);
dipi 0:6a71184e6f66 25
dipi 0:6a71184e6f66 26 /** Time to wait before the ADC starts to sample
dipi 0:6a71184e6f66 27 @param nrOfCycles Number of cycles (outputfrequency) to wait for sampling can start (max 2044)
dipi 0:6a71184e6f66 28 */
dipi 0:6a71184e6f66 29 bool setSettlingTime(unsigned int nrOfCycles);
dipi 0:6a71184e6f66 30
dipi 0:6a71184e6f66 31 /** Set the gain of the pre-amplification and the output voltage range
dipi 0:6a71184e6f66 32 @param PGA Gain of the pre-amplifier (true = x1; false = x5)
dipi 0:6a71184e6f66 33 @param RangeNr Set the output voltage (1 = 2V; 2 = 1V; 3 = 400mV; 4 = 200mV)
dipi 0:6a71184e6f66 34 */
dipi 0:6a71184e6f66 35 bool setAnalogCircuit(bool PGA, int RangeNr);
dipi 0:6a71184e6f66 36
dipi 0:6a71184e6f66 37 /** Measure Impedance
dipi 0:6a71184e6f66 38 @param increment (true = goto next frequency in sweep; false = remeasure at current frequency)
dipi 0:6a71184e6f66 39 */
dipi 0:6a71184e6f66 40 bool Measure(bool increment);
dipi 0:6a71184e6f66 41
dipi 0:6a71184e6f66 42 /// Resets Device
dipi 0:6a71184e6f66 43 bool reset();
dipi 0:6a71184e6f66 44
dipi 0:6a71184e6f66 45 /// real part of impedance (uncalibrated)
dipi 0:6a71184e6f66 46 int real;
dipi 0:6a71184e6f66 47
dipi 0:6a71184e6f66 48 /// imaginary part of impedance (uncalibrated)
dipi 0:6a71184e6f66 49 int imaginary;
dipi 0:6a71184e6f66 50
dipi 0:6a71184e6f66 51
dipi 0:6a71184e6f66 52 private:
dipi 0:6a71184e6f66 53 I2C sCom;
dipi 0:6a71184e6f66 54 uint8_t PGAandVoltout;
dipi 0:6a71184e6f66 55 bool firstMeasurement;
dipi 0:6a71184e6f66 56
dipi 0:6a71184e6f66 57 bool gotoAdressPointer(uint8_t Adress);
dipi 0:6a71184e6f66 58 bool setRegister(uint8_t RegisterAdress, uint8_t RegisterValue);
dipi 0:6a71184e6f66 59 bool writeBlock(uint8_t ByteArray[], uint8_t sizeArray);
dipi 0:6a71184e6f66 60 uint8_t getRegister(uint8_t RegisterAdress);
dipi 0:6a71184e6f66 61 bool readBlock(uint8_t* ByteArray, uint8_t sizeArray);
dipi 0:6a71184e6f66 62 bool setControlReg(uint8_t Command);
dipi 0:6a71184e6f66 63 bool getData();
dipi 0:6a71184e6f66 64 bool _extClk;
dipi 0:6a71184e6f66 65
dipi 0:6a71184e6f66 66 };
dipi 0:6a71184e6f66 67 #endif