lincfg.h

BCM 控制demo源代码

#ifndef LINCFG_H
#define LINCFG_H

/******************************************************************************		
*                                                                                   
*       Copyright (C) 2005 Freescale Semiconductor, Inc.                            
*       All Rights Reserved								              				
*														              				
* Filename:     lincfg.h                											
*														              				
* Functions:    LIN Driver static configuration file for LINS12X				
*               LINKits Master sample			     	 							
*												                            		
* Description:	Example file that can be modified by the user.						
*																					
* Notes:        																	
*																					
******************************************************************************/		
																					
																					

/* CPU bus freq  = 40 MHz */
/* SCI (LIN) freq = 9.6 Kbit */

/* This definition set the number of user-defined timer clocks
   (LIN_IdleClock service calls), recognized as "no-bus-activity"
   condition. This number shall not be greater than 0xFFFF. */

#define LIN_IDLETIMEOUT         100u



/* This definition configures the LIN bus baud rate.
   This value shall be set according to target MCU
   SCI register usage.
   LIN_BAUDRATE = BUSCLK / ( Baud Rate*16)
   = 40MHz /(9600bps * 16) = 260.4 */

#define LIN_BAUDRATE    260u   /* 9600 baudrate -> 1/9600 = Tbit = 104us*/



/* This definition configures the priority level of the SCI interrupt
   The level 1 -7 are possible */

#define LIN_SCIINTPRIORITY 5



/* This definition configures the location of the Vector table.
   is this undefined thenthe default location will be used 

#define LIN_IVBR_START  0xFF00 */


#if defined(MASTER)

/* This definition configures the tick duration of PIT channel counter.
Tpit tick = LIN_PITMICROCOUNTER /BUSCLK
LIN_PITMICROCOUNTER = Tpit tick * BUSCLK = 1us * 40MHz = 40
   Master node only*/

#define LIN_PITMICROCOUNTER 40


/* This definition configures the priority level of the PIT channel interrupt
   The level 1 -7 are possible */

#define LIN_PITINTPRIORITY 4



/* This definition set the length of one bit transmission period on the target MCU.
   Due to 16-bit counters on target MCU this value shall not be greater than 0xFFFF.
   For correct timeouts computation this value shall have qualificator 'l'.
   Master node only*/

#define LIN_BITTIME   104ul  /*LIN_BITTIME *timer clock = Tbit -> 104 * 1us = 104us */


/* 
   This definition configures the time of the wake up  delimiter.
   The LIN specification v.1.2 specify this time min 4 Tbit and max 64 Tbit 
*/
#define LIN_TO_WAKEUPDEL 10


#endif /* defined(MASTER) */
#endif /* !define (LINCFG_H) */