usb.h

// usb.h
//
// Author: Beat Meier
//
// Class provides basic functionalities to use the USB interface
//


#ifndef USB_H
#define USB_H

#ifdef _WIN32
#include "windows.h"
#include "win32\FTD2XX.h"
#else
#include "linux/ftd2xx.h"
#endif

#include "rpc_io.h"

#define USBWRITEBUFFERSIZE  1024
#define USBREADBUFFERSIZE   4096

/*
class CUsbLog
{
	FILE *f;
	enum { IDLE, CMD_1, CMD_2, CMD_CNT, DAT_CNT1, DAT_CNT2, DAT_CNT3, DATA } state;
	unsigned int count;
	unsigned int cmd;
public:
	CUsbLog();
	~CUsbLog();
	void Add(unsigned int x);
};
*/

class CUSB : public CRpcIo
{
	bool isUSB_open;
	FT_HANDLE ftHandle;
	FT_STATUS ftStatus;

	DWORD enumPos, enumCount;

	DWORD m_posW;
	unsigned char m_bufferW[USBWRITEBUFFERSIZE];

	DWORD m_posR, m_sizeR;
	unsigned char m_bufferR[USBREADBUFFERSIZE];

	bool FillBuffer(DWORD minBytesToRead);

public:
	CUSB()
	{
		m_posR = m_sizeR = m_posW = 0;
		isUSB_open = false;
		ftHandle = 0; ftStatus = 0;
		enumPos = enumCount = 0;
	}
	~CUSB() { /* Close(); */ }
	int GetLastError() { return ftStatus; }
	static const char* GetErrorMsg(int error);
	bool EnumFirst(unsigned int &nDevices);
	bool EnumNext(char name[]);
	bool Enum(char name[], unsigned int pos);
	bool Open(char serialNumber[]);
	void Close();
	bool Connected() { return isUSB_open; };


	void Write(const void *buffer, unsigned int size);
	void Flush();
	void Clear();
	void Read(void *buffer, unsigned int size);
};

#endif