harp_c_app.h

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#ifndef HARP_C_APP_H
#define HARP_C_APP_H
#include <harp_core.h>
#include <core_registers.h>
#include <reg_types.h>
 
class HarpCApp: public HarpCore
{
 
// Make constructor private to prevent creating instances outside of init().
private:
    HarpCApp(uint16_t who_am_i,
             uint8_t hw_version_major, uint8_t hw_version_minor,
             uint8_t assembly_version,
             uint8_t harp_version_major, uint8_t harp_version_minor,
             uint8_t fw_version_major, uint8_t fw_version_minor,
             uint16_t serial_number, const char name[],
             const uint8_t tag[],
             void* app_reg_values, RegSpecs* app_reg_specs,
             RegFnPair* reg_fns, size_t app_reg_count,
             void (* update_fn)(void), void (* reset_fn)(void));
 
    ~HarpCApp();
 
public:
    HarpCApp() = delete;  // Disable default constructor.
    HarpCApp(HarpCApp& other) = delete; // Disable copy constructor.
    void operator=(const HarpCApp& other) = delete; // Disable assignment operator.
 
    static HarpCApp& init(uint16_t who_am_i,
                          uint8_t hw_version_major, uint8_t hw_version_minor,
                          uint8_t assembly_version,
                          uint8_t harp_version_major, uint8_t harp_version_minor,
                          uint8_t fw_version_major, uint8_t fw_version_minor,
                          uint16_t serial_number, const char name[],
                          const uint8_t tag[],
                          void* app_reg_values, RegSpecs* app_reg_specs,
                          RegFnPair* reg_fns, size_t app_reg_count,
                          void (* update_fn)(void), void (*reset_fn)(void));
 
    static inline HarpCApp* self = nullptr; // pointer to the singleton instance.
    static HarpCApp& instance() {return *self;} 
 
private:
    void handle_buffered_app_message();
 
    void update_app_state()
    {update_fn_();}
 
    void reset_app()
    {reset_fn_();}
 
    void dump_app_registers();
 
    const RegSpecs& address_to_app_reg_specs(uint8_t address)
    {return reg_specs_[address - APP_REG_START_ADDRESS];}
 
// Private Members
    void* reg_values_;
    RegSpecs* reg_specs_;
    RegFnPair* reg_fns_;
    size_t reg_count_;
    void (* update_fn_)(void);
    void (* reset_fn_)(void);
};
 
#endif //HARP_C_APP_H