CN0391.h

00001 #ifndef _CN0391_H_
00002 #define _CN0391_H_
00003 #include "AD7124.h"
00004 #include "Thermocouple.h"
00005 
00006 
00007 /**
00008  * @brief Thermocouple_Channel class
00009  */
00010 class Thermocouple_Channel
00011 {
00012 private:
00013 public:
00014     /**
00015      * @brief Thermocouple channel constructor
00016      */
00017     Thermocouple_Channel();
00018     /**
00019      * @brief Constructs thermocouple channel using thermocouple type t
00020      */
00021     Thermocouple_Channel(Thermocouple *t);
00022 
00023     Thermocouple *t;
00024     uint16_t thermocouple_channel;
00025     uint16_t rtd_channel;
00026     uint16_t calibration_channel;
00027     float calibration_current;
00028 
00029     /**
00030      * @brief gets thermocouple type
00031      * @return thermocouple type
00032      */
00033     Thermocouple* get_thermocouple_type();
00034 
00035     /**
00036      * @brief sets new thermocouple type
00037      * @param new_t new thermocouple type
00038      */
00039     void set_thermocouple_type(Thermocouple* new_t);
00040 
00041     /**
00042      * @brief sets up thermocouple channel
00043      * @param new_t thermocouple type
00044      * @param thermocouple_channel - thermocouple ADC channel
00045      * @param rtd_channel - RTD ADC channel
00046      * @param calibration_channel - ADC channel used in calibration
00047      *
00048      */
00049     void setup_channel(Thermocouple* new_t, uint16_t thermocouple_channel, uint16_t rtd_channel, uint16_t calibration_channel);
00050 };
00051 
00052 class CN0391
00053 {
00054 private:
00055 public:
00056     CN0391(PinName cs);
00057 
00058     typedef enum {
00059         CHANNEL_P1 = 0,
00060         CHANNEL_P2,
00061         CHANNEL_P3,
00062         CHANNEL_P4
00063     } channel_t;
00064 
00065     Thermocouple_Channel tc[4];
00066 
00067     /**
00068      * @brief sets channel with thermocouple type
00069      * @param ch - channel
00070      * @param new_t - thermocouple type
00071      */
00072     void set_thermocouple_type(channel_t ch, Thermocouple* new_t);
00073 
00074     /**
00075      * @brief Reads thermocouple channel
00076      * @param ch - channel
00077      */
00078     float read_channel(channel_t ch);
00079 
00080     /**
00081      * @brief Calibrate channel
00082      * @param ch - channel
00083      */
00084     float calibrate(channel_t ch);
00085 
00086 
00087     /**
00088      * @brief converts ADC  counts to voltage
00089      * @param data - ADC counts
00090      * @return voltage
00091      */
00092     float data_to_voltage(uint32_t data);
00093 
00094     /**
00095      * @brief enables thermocouple channel
00096      * @param channel
00097      */
00098     void enable_channel(int channel);
00099 
00100     /**
00101      * @brief disables thermocouple channel
00102      * @param channel
00103      */
00104     void disable_channel(int channel);
00105 
00106     /**
00107      * @brief enables ADC current source
00108      * @param current_source_channel
00109      */
00110     void enable_current_source(int current_source_channel);
00111 
00112     /**
00113      * @brief starts ADC single conversion
00114      */
00115     void start_single_conversion();
00116 
00117     /**
00118      * @brief resets the ADC
00119      */
00120     void reset();
00121 
00122     /**
00123      * @brief Performs ADC setup
00124      */
00125     void setup();
00126 
00127     /**
00128      * @brief Initializes the CN0391 shield
00129      */
00130     void init();
00131 
00132     AD7124 ad7124;
00133 
00134 
00135 };
00136 #endif