File content as of revision 2:d2c51376ee7c:

#if !defined(__MCP320x_H__)
#define __MCP320x_H__

#include <string>
//#include <vector>

#include "mbed.h"

namespace MCP320x_SPI {
    class CMCP320x_SPI { 
        /** Reference counter used to guarentee unicity of the instance of SPI class
         */
        static unsigned char SPIModuleRefCounter;
        
        /** ChipSelect (pin 1) see DS21290F-page 15 Clause 3.3 Chip Select/Shutdown (CS/SHDN)
         */
        DigitalOut *_cs;
        
        /** An unique instance of SPI class
         */
        SPI *_spiInstance;
        
        /** ADC sample structure
         */
        typedef union {
            unsigned int value;
            struct {
                unsigned char bytes[2];
            };
        } ADCValue;
        ADCValue _sample;
        /** Number of channels according to the IC type 
         */
        unsigned char _channelsNum;
        /** Set to true for single-ended inputs configuration, false for pseudo-differential inputs
         * @see DS21298E-page 19 Clause 5.0 SERIAL COMMUNICATIONS
         */
        unsigned char _settings;
   public:
        /** MCP320x familly
         */
        enum Mcp320xFamilly {
            _3201 = 0x00, /** See DS21290F */
            _3204 = 0x01, /** See DS21298E */
            _3208 = 0x03  /** See DS21298E */
        };
        Mcp320xFamilly _familly;
        /** MCP320x channels to read
         */
        enum Mcp320xChannels {
            CH0 = 0x00, /** See DS21290F/DS21290F */
            CH1 = 0x01, /** See DS21298E */
            CH2 = 0x02, /** See DS21298E */
            CH3 = 0x03, /** See DS21298E */
            CH4 = 0x04, /** See DS21298E */
            CH5 = 0x05, /** See DS21298E */
            CH6 = 0x06, /** See DS21298E */
            CH7 = 0x07  /** See DS21298E */
        };
   public:
        /** Constructor with Write Protect command pin wired.
         *
         * @param p_mosi: MBed pin for SDI
         * @param p_miso: MBed pin for SDO
         * @param p_sclk: MBed pin for CLK
         * @param p_cs  : MBed pin for Chip Select. If NC, assumes that application manage /CS, default value is NC, not connected
         * @param p_familly: MCP320x familly. Default: _3201
         * @param p_frequency: Frequency of the SPI interface (SCK), default value is 1MHz
         */
        CMCP320x_SPI(const PinName p_mosi, const PinName p_miso, const PinName p_sclk, const PinName p_cs = NC, const Mcp320xFamilly p_familly = _3201, const unsigned int p_frequency = 1000000);
    
        /** Destructor
         * If managed, the /CS pin is set to 1 before to release it
         */
        virtual ~CMCP320x_SPI();

        /** Used to return the unique instance of SPI instance
         */
        inline const SPI * operator * () { return (const SPI *)_spiInstance; };

        /** 
         * @desc Launch an analog to digital conversion on the specified channel
         * @param p_channel The channel to convert
         * @return The converted value
         */
        float Read(const Mcp320xChannels p_channels = CH1);
        
        /** 
         * @desc Change current configuration (only for MCP3204/8)
         * @param p_setConfig Set to true for single-ended inputs configuration, false for pseudo-differential inputs
         * @see DS21298E-page 17 Clause 4.1 Analog Inputs
         */
        void SetConfig(const bool p_settings);
    
         /** Shutdown the device
         */
        bool Shutdown(const bool p_shutdown);
    
   private:
        /** Internal reference identifier
         */
        std::string _internalId;
        
    private:
    
        /** 
         * @desc Launch an analog to digital conversion on the specified channel for MCP3201
         * @see DS21290F-page 17 Clause 4.1 Analog Inputs
         */
        void Read_3201();
        
        /** 
         * @desc Launch an analog to digital conversion on the specified channel for MCP3204/8
         * @param p_setConfig Set to true for single-ended inputs configuration, false for pseudo-differential inputs
         * @see DS21298E-page 17 Clause 4.1 Analog Inputs
         */
        void Read_320x(const Mcp320xChannels p_channels);    
        
    }; // End of class CMCP320x_SPI

} // End of namespace MCP320x_SPI

using namespace MCP320x_SPI;

#endif // __MCP320x_SPI_H__