frederic blanc / AD8556

The AD8556 is a zero-drift, sensor signal amplifier with digitally programmable gain and output offset.

Dependents:   AD8556_HelloWolrd

AD8556.h@0:05eaa16f3327, 2013-09-11 (annotated)

Committer:
fblanc
Date:
Wed Sep 11 13:30:19 2013 +0000
Revision:
0:05eaa16f3327
OK

Who changed what in which revision?

UserRevisionLine numberNew contents of line
fblanc 0:05eaa16f3327 1 /**
fblanc 0:05eaa16f3327 2 * @brief AD8556: Digitally Programmable Sensor Signal Amplifier with EMI Filters
fblanc 0:05eaa16f3327 3 * http://www.analog.com/en/specialty-amplifiers/instrumentation-amplifiers/ad8556/products/product.html
fblanc 0:05eaa16f3327 4 * @date 05/09/2013
fblanc 0:05eaa16f3327 5 * @author F.BLANC LAAS-CNRS
fblanc 0:05eaa16f3327 6 * http://homepages.laas.fr/fblanc/
fblanc 0:05eaa16f3327 7 */
fblanc 0:05eaa16f3327 8 #ifndef AD8556_H
fblanc 0:05eaa16f3327 9
fblanc 0:05eaa16f3327 10 #define AD8556_H
fblanc 0:05eaa16f3327 11
fblanc 0:05eaa16f3327 12 #include "mbed.h"
fblanc 0:05eaa16f3327 13 enum ADC_MODE {
fblanc 0:05eaa16f3327 14 ADC_MODE_SENSE_CURENT = 0x00,
fblanc 0:05eaa16f3327 15 ADC_MODE_SIMULATION = 0x01,
fblanc 0:05eaa16f3327 16 ADC_MODE_FUSE = 0x02,
fblanc 0:05eaa16f3327 17 ADC_MODE_READ = 0x03
fblanc 0:05eaa16f3327 18 };
fblanc 0:05eaa16f3327 19 enum ADC_FUNCTION {
fblanc 0:05eaa16f3327 20 ADC_Change_Sense_Current = 0x00,
fblanc 0:05eaa16f3327 21 ADC_Simulate_Parameter_Value = 0x01,
fblanc 0:05eaa16f3327 22 ADC_Program_Parameter_Value = 0x02,
fblanc 0:05eaa16f3327 23 ADC_Read_Parameter_Value = 0x03
fblanc 0:05eaa16f3327 24 };
fblanc 0:05eaa16f3327 25 enum ADC_PARAMETER {
fblanc 0:05eaa16f3327 26 ADC_Second_Stage_Gain_Code = 0x00,
fblanc 0:05eaa16f3327 27 ADC_First_Stage_Gain_Code = 0x01,
fblanc 0:05eaa16f3327 28 ADC_Output_Offset_Code = 0x02,
fblanc 0:05eaa16f3327 29 ADC_Other_Functions = 0x03
fblanc 0:05eaa16f3327 30 };
fblanc 0:05eaa16f3327 31 /** AD8556 class.
fblanc 0:05eaa16f3327 32 * Used for controlling a AD8556 Instrumentation Amplifiers connected via Single-wire serial interface.
fblanc 0:05eaa16f3327 33 *
fblanc 0:05eaa16f3327 34 */
fblanc 0:05eaa16f3327 35 class AD8556
fblanc 0:05eaa16f3327 36 {
fblanc 0:05eaa16f3327 37 protected:
fblanc 0:05eaa16f3327 38 private:
fblanc 0:05eaa16f3327 39 /**
fblanc 0:05eaa16f3327 40 * @brief write_bit
fblanc 0:05eaa16f3327 41 *
fblanc 0:05eaa16f3327 42 * @param bit 1 or 0
fblanc 0:05eaa16f3327 43 */
fblanc 0:05eaa16f3327 44 void write_bit(unsigned char bit);
fblanc 0:05eaa16f3327 45 /**
fblanc 0:05eaa16f3327 46 * @brief read_bit
fblanc 0:05eaa16f3327 47 *
fblanc 0:05eaa16f3327 48 * @return bit 1 or 0
fblanc 0:05eaa16f3327 49 */
fblanc 0:05eaa16f3327 50 unsigned char read_bit();
fblanc 0:05eaa16f3327 51 /**
fblanc 0:05eaa16f3327 52 * @brief trame
fblanc 0:05eaa16f3327 53 * @param parameter
fblanc 0:05eaa16f3327 54 * @param mode
fblanc 0:05eaa16f3327 55 * @param data
fblanc 0:05eaa16f3327 56 */
fblanc 0:05eaa16f3327 57 void trame(unsigned char parameter,unsigned char mode,unsigned char data);
fblanc 0:05eaa16f3327 58 public:
fblanc 0:05eaa16f3327 59 /**
fblanc 0:05eaa16f3327 60 * @brief Constructor.
fblanc 0:05eaa16f3327 61 * @param dig
fblanc 0:05eaa16f3327 62 */
fblanc 0:05eaa16f3327 63 AD8556(PinName dig);
fblanc 0:05eaa16f3327 64 DigitalInOut _dig;
fblanc 0:05eaa16f3327 65
fblanc 0:05eaa16f3327 66 /**
fblanc 0:05eaa16f3327 67 * @brief Destructor.
fblanc 0:05eaa16f3327 68 */
fblanc 0:05eaa16f3327 69 ~AD8556();
fblanc 0:05eaa16f3327 70 /**
fblanc 0:05eaa16f3327 71 * @brief init
fblanc 0:05eaa16f3327 72 * @param First_Stage_Gain_Code
fblanc 0:05eaa16f3327 73 * @param Second_Stage_Gain_Code
fblanc 0:05eaa16f3327 74 * @param Vdac_Code
fblanc 0:05eaa16f3327 75 */
fblanc 0:05eaa16f3327 76 int init(unsigned char mode=ADC_MODE_SIMULATION, unsigned char First_Stage_Gain_Code=0, unsigned char Second_Stage_Gain_Code=0,unsigned char Vdac_Code=0x7F);
fblanc 0:05eaa16f3327 77 /**
fblanc 0:05eaa16f3327 78 * @brief prog_vdac
fblanc 0:05eaa16f3327 79 * @param vdac consigne (volt)
fblanc 0:05eaa16f3327 80 * @param vdd positive voltage supply (volt)
fblanc 0:05eaa16f3327 81 * @param vss nagative voltage supply (volt)
fblanc 0:05eaa16f3327 82 * @param mode
fblanc 0:05eaa16f3327 83 */
fblanc 0:05eaa16f3327 84 void prog_vdac(float vdac, float vdd=5.0 ,float vss=0.0, unsigned char mode=ADC_MODE_SIMULATION);
fblanc 0:05eaa16f3327 85 /**
fblanc 0:05eaa16f3327 86 * @brief prog_gain
fblanc 0:05eaa16f3327 87 * @param gain 70 to 1280
fblanc 0:05eaa16f3327 88
fblanc 0:05eaa16f3327 89 * @param mode
fblanc 0:05eaa16f3327 90 */
fblanc 0:05eaa16f3327 91 void prog_gain(float gain=70.0, unsigned char mode=ADC_MODE_SIMULATION);
fblanc 0:05eaa16f3327 92
fblanc 0:05eaa16f3327 93 };
fblanc 0:05eaa16f3327 94 #endif