diag_l2_iso14230.h

Freediag contains various drivers (ISO9141, ISO14230, SAEJ1850-VPW, SAEJ1850-PWM) for different adap

/*
 *	freediag - Vehicle Diagnostic Utility
 *
 * CVSID $Id: diag_l2_iso14230.h,v 1.3 2002/06/18 21:58:13 rpalmeida Exp $
 *
 * Copyright (C) 2001 Richard Almeida & Ibex Ltd ([e-mail])
 *
 * This program 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.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 *************************************************************************
 *
 * Diag
 *
 * L2 driver for ISO14230-2 layer 2
 *
 */

/*
 * Decode the message header
 */
int
diag_l2_proto_14230_decode(u_int8_t *data, int len,
		 int *hdrlen, int *datalen, int *source, int *dest,
		int first_frame);

/*
 * Internal receive function (does all the message building, but doesn't
 * do call back, returns the complete message, hasn't removed checksum
 * and header info
 *
 * Data from the first message is put into *data, and len into *datalen
 *
 * If the L1 interface is clever (DOESL2FRAME), then each read will give
 * us a complete message, and we will wait a little bit longer than the normal
 * timeout to detect "end of all responses"
 */
int
diag_l2_proto_14230_int_recv(diag_l2_conn_t *d_l2_conn, int timeout,
	u_int8_t *data, int *datalen);

/* External interface */

/*
 * The complex initialisation routine for ISO14230, which supports
 * 2 types of initialisation (5-BAUD, FAST) and functional
 * and physical addressing. The ISO14230 spec describes CARB initialisation
 * which is done in the ISO9141 code
 */
int
diag_l2_proto_14230_startcomms( diag_l2_conn_t	*d_l2_conn, u_int16_t flags,
	int bitrate, u_int8_t target, u_int8_t source);

/*
*/
int
diag_l2_proto_14230_stopcomms(diag_l2_conn_t* pX);

/*
 * Just send the data
 *
 * We add the header and checksums here as appropriate, based on the keybytes
 *
 * We take the source and dest from the internal data NOT from the msg fields
 *
 * We also wait p3 ms 
 */
int
diag_l2_proto_14230_send(diag_l2_conn_t *d_l2_conn, diag_msg_t *msg);

/*
 * Protocol receive routine
 *
 * Will sleep until a complete set of responses has been received, or fail
 * with a timeout error
 *
 * The interbyte type in data from an ecu is between P1Min and P1Max
 * The intermessage time for part of one response is P2Min and P2Max
 *
 * If we are running with an intelligent L1 interface, then we will be
 * getting one message per frame, and we will wait a bit longer
 * for extra messages
 */
int
diag_l2_proto_14230_recv(diag_l2_conn_t *d_l2_conn, int timeout,
	void (*callback)(void *handle, diag_msg_t *msg),
	void *handle);

/*
*/
diag_msg_t *
diag_l2_proto_14230_request(diag_l2_conn_t *d_l2_conn, diag_msg_t *msg,
		int *errval);


/*
 * AccessTimingParameters
 */
int
diag_l2_proto_14230_atp(diag_l2_conn_t* d_l2_conn, int p2min, int p2max, int p3min, int p3max, int p4min);

/*
 * Timer, called regularly, we don't do anything with this
 */
void
diag_l2_proto_14230_timer(int iX);

/*
 * Timeout, - if we don't send something to the ECU it will timeout
 * soon, so send it a keepalive message now.
 */
void
diag_l2_proto_14230_timeout(diag_l2_conn_t *d_l2_conn);