DeviceIO/DppLibUsb.h

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#pragma once

#ifdef _WIN32
        #define LIBUSB_WINUSB_BACKEND 1
#endif

#ifdef LIBUSB_WINUSB_BACKEND 
        #include "libusb.h"
        #ifdef _MSC_VER
                #pragma comment(lib, ".\\DeviceIO\\libusb.lib")
        #endif
#else
        #include <libusb.h>
#endif

#include <stdio.h>
#include <sys/types.h>
#include <string.h>

#define AMPTEK_DP5_VENDOR_ID 0x10C4
#define AMPTEK_DP5_PRODUCT_ID 0x842A

#define INTERFACE_NUMBER 0
#define TIMEOUT_MS 5000
#define BULK_IN_ENDPOINT 0x81
#define BULK_OUT_ENDPOINT 0x02
#define MAX_BULK_IN_TRANSFER_SIZE 32768
#define MAX_BULK_OUT_TRANSFER_SIZE 520
#define STATUS_PACKET_SIZE 64
#define DP5_USB_TIMEOUT 500         // default timeout (500mS)
#define DP5_DIAGDATA_TIMEOUT 2500       // diag data timeout
#define PID1_REQ_SCOPE_MISC_TO 0x03
#define PID2_SEND_DIAGNOSTIC_DATA_TO 0x05


class CDppLibUsb
{
public:
        CDppLibUsb(void);
        ~CDppLibUsb(void);

        unsigned char data_in[MAX_BULK_IN_TRANSFER_SIZE];               // data bytes in
        unsigned char data_out[MAX_BULK_OUT_TRANSFER_SIZE];             // data bytes out

        libusb_device_handle *DppLibusbHandle;
        int NumDevices;
        int CurrentDevice;
        bool bLibusbReady;
        bool bDeviceReady;
        char LastLibUsbError[256];
        bool bDeviceConnected;

        int InitializeLibusb();
        void DeinitializeLibusb();
        libusb_device_handle * FindUSBDevice(int idxAmptekDevice);
        void CloseUSBDevice(libusb_device_handle * devh);
        int SendPacketUSB(libusb_device_handle *devh, unsigned char data_out[], unsigned char data_in[]);
        bool isAmptekDP5Device(libusb_device_descriptor desc);
        int CountDP5LibusbDevices();
        void PrintDevices();

#ifndef LIBUSB_WINUSB_BACKEND
        const char * libusb_strerror(enum libusb_error error_code);
#endif

};