| 1 | /*-----------------------------------------------------------------------------
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| 2 | icanconf.h -- ICANOS specific definitions
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| 3 |
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| 4 | Copyright (c) 1994 JANZ Computer AG
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| 5 | All Rights Reserved
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| 6 |
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| 7 | Created 94/10/11 by Soenke Hansen
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| 8 | Version 1.16 of 99/06/23
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| 9 |
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| 10 | Declarations and definitions of functions and macros:
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| 11 | - disable/enable CAN and clock interrupts
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| 12 | - start/stop a periodical timer
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| 13 | - read/write registers in Basic CAN controller
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| 14 | The conditionally included files i8051.h and mc68332.h contain
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| 15 | examples for the Intel 8051 and Motorola 68332 micro-controller
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| 16 | families, respectively.
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| 17 |
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| 18 | Some definitions in bcan.h depend on the oscillator frequency used
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| 19 | for the Basic CAN controller. Currently only definitions for a 16 MHz
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| 20 | oscillator are given. These are activated by defining OSC_16MHZ here.
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| 21 |
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| 22 | Memory allocation functions:
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| 23 | - malloc() and free()
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| 24 | If these functions are not available from a system library the
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| 25 | functions implemented in malloc.c are used if OUR_MALLOC==1.
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| 26 | These functions allocate memory from a fixed size array.
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| 27 | The length of this array in bytes is given by MALLOC_BYTES.
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| 28 | The data type ALIGN_t is used to insure that malloc returns addresses
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| 29 | which are correctly aligned for every data type.
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| 30 |
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| 31 | -----------------------------------------------------------------------------*/
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| 32 |
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| 33 | #ifndef icanconf_DEFINED
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| 34 | #define icanconf_DEFINED
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| 35 |
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| 36 | #ifdef __cplusplus
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| 37 | extern "C" {
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| 38 | #endif
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| 39 |
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| 40 | /* Load the user configuration */
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| 41 | #include "config.h"
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| 42 |
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| 43 | /* Intel 8051 family with Archimedes C-51 compiler */
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| 44 | #ifdef i8051
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| 45 | #include "i8051.h"
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| 46 | #endif
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| 47 |
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| 48 | /* Motorola 68332 with Microtec Research C compiler */
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| 49 | #ifdef mc68332
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| 50 | #include "mc68332.h"
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| 51 | #endif
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| 52 |
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| 53 | /* Implementation options */
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| 54 | #ifndef ICAN_ECHO
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| 55 | #define ICAN_ECHO 1 /* with local transmit echo if == 1 */
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| 56 | #endif
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| 57 | #ifndef ICAN_FILTER
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| 58 | #define ICAN_FILTER 1 /* with acceptance filtering if == 1 */
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| 59 | #endif
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| 60 |
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| 61 | /* Set maximum CAN send queue length. */
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| 62 | #ifndef TX_QUEUE_LEN
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| 63 | #define TX_QUEUE_LEN 20
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| 64 | #endif
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| 65 |
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| 66 | /* Define this if a 16 MHz oscillator is used for BCAN */
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| 67 | #define OSC_16MHZ
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| 68 |
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| 69 | /*------- Memory allocation ------------------------------------------------*/
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| 70 |
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| 71 | /* If OUR_MALLOC is !=0 then malloc() and fre() as implemented in
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| 72 | malloc.c are used else the system library functions are used.
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| 73 | By default our functions are used. */
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| 74 | #ifndef OUR_MALLOC
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| 75 | #define OUR_MALLOC 0 /* if true, use our malloc and free */
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| 76 | #endif
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| 77 |
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| 78 | /* Memory management */
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| 79 | #if OUR_MALLOC == 1 /* using our malloc and free? */
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| 80 |
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| 81 | #ifndef MALLOC_BYTES
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| 82 | #define MALLOC_BYTES 8000 /* size in bytes of alloc array */
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| 83 | #endif
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| 84 | typedef int ALIGN_t; /* alignment type */
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| 85 |
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| 86 | /* Memory is allocated from an array of blocks of type HEADER */
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| 87 | union header { /* free block header */
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| 88 | struct {
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| 89 | union header *ptr; /* next free block */
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| 90 | unsigned size; /* size of this free block */
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| 91 | } s;
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| 92 | ALIGN_t x; /* force alignment of blocks */
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| 93 | };
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| 94 |
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| 95 | typedef union header HEADER;
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| 96 |
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| 97 | /* Maximum number of blocks */
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| 98 | #define MALLOC_BLOCKS (MALLOC_BYTES/sizeof(HEADER)+1)
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| 99 |
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| 100 | extern void init_malloc(); /* initialization of alloc array */
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| 101 | extern void *malloc(); /* well known function */
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| 102 | extern void free(); /* well known function */
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| 103 | extern int check_free_mem(); /* check for free memory */
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| 104 |
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| 105 | #else /* use malloc and free of system library */
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| 106 | #include <stdlib.h>
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| 107 | #define init_malloc()
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| 108 | #endif
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| 109 | #define FREE(p) if ((p)) free((void *)p)
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| 110 |
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| 111 |
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| 112 | /*------- Debugging tools (for development at JANZ only) -------------------*/
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| 113 |
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| 114 | #ifndef DEBUG
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| 115 | #define DEBUG 0 /* default: no debugging */
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| 116 | #endif
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| 117 |
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| 118 | /* Logging */
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| 119 | #if DEBUG>0
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| 120 | #include "debug.h"
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| 121 | #else
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| 122 | #define PRINTF(args)
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| 123 | #define LOG(level, args)
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| 124 | #define DESPAIR
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| 125 | #endif
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| 126 |
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| 127 | #ifndef BIGBOX
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| 128 | #ifdef GDBDEBUG
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| 129 | #include "userIf.h"
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| 130 | #else
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| 131 | #define KPRINTF(X)
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| 132 | #endif
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| 133 | #endif
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| 134 |
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| 135 | /* Dummies */
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| 136 | #if DEBUG==1
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| 137 | #include "simul.h"
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| 138 | #endif
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| 139 |
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| 140 | #ifdef __cplusplus
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| 141 | }
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| 142 | #endif
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| 143 |
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| 144 | #endif /* !icanconf_DEFINED */
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