ezusb_loader.h

linux下的jtag调试软件

/*
 * This file is part of Jelie,
 * (c) 2002 Julien Pilet <[e-mail]> and
 * Stephane Magnenat <[e-mail]>
 *
 * Jelie is free software; you can redistribute it
 * and/or modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the License,
 * or (at your option) any later version.
 *
 * Jelie is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Foobar; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

/*! \file
 * This is the definition of the EzUSB loader
 *
 * \author Julien Pilet <[e-mail]>
 * \author Stephane Magnenat <[e-mail]>
 */

#ifndef _EZUSB_H_
#define _EZUSB_H_

#include <stdio.h>
#include <ctype.h>
#include <usb.h>

//! EzUSB user-level program upload facility
/*! This class provide all necessary facilities
	to upload a program into the EzUSB microcontroller.
	It is purely user space so no kernel driver
	is needed. It relays on the libusb that
	hide kernel's USB ioctl. */
class EzUSB
{
protected:
	//! USB device Handle, used for device access
	struct usb_dev_handle* devHandle;
	//! Vendor identifier
	int idVendor;
	//! Product identifier
	int idProduct;
	//! Filename to open
	char filename[1024];

protected:
	//! Internal structure for hex file
	struct intels
	{
		int addr, len;
		unsigned char * data;
		struct intels * nxt;
	} intels;

	//! Read Intel hex file
	int read_head(FILE * fh, struct intels * * doutp );

	//! Send a control message
	int shunt(usb_dev_handle *pdev, int at, void *d, int len);

public:
	//! EzUSB constructor
	/*!	\param filename the firmware to load into the EzUSB device */
	EzUSB(const char *filename=NULL);
	//! EzUSB destructor
	/*! close the handle to the device */
	virtual ~EzUSB();

	//! Reset the UBS device. Must be called when an OS asyncronous event (like SIGTERM) is caught
	virtual void forceClose(void);
	
	//! Parse command line and extract options
	/*! \param argc number of command line argument
	 	\param argv array of char* that contains the arguments
		\return nothing. */
	void parseCmdLine(int argc, char *argv[]);
	//! Find the device, return false if device can't be found
	/*! \return true if device is found, false otherwise. */
	bool findDevice(void);
	//! Download the firmware to the device
	/*! \return true if the firmware has sucessfully been downloaded into the EzUSB device,
	 	false otherwise. 
		\param firmware the hex file containing the firmware. Will be overriden
		if the option -f <file> is provided and parsed by parseCmdLine
	 */
	bool downloadFirmware(const char *firmware);
};

#endif