lincan/utils/sendburst.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <fcntl.h>
   4 #include <unistd.h>
   5 #include <getopt.h>
   6 #include <sys/types.h>
   7 #include <sys/stat.h>
   8
   9 #include "../include/can.h"
  10
  11 int canmsg_flags = 0;
  12 unsigned long canmsg_id = 5;
  13
  14 int can_wait_sec = 1;
  15
  16 char *can_dev_name = "/dev/can0";
  17
  18 #define PRT_PREFIX_SIZE 40
  19 char prt_prefix[PRT_PREFIX_SIZE];
  20
  21 char *prt_prefix_in = "CAN %s : ";
  22
  23
  24 static void
  25 usage(void)
  26 {
  27   printf("usage: sendburst\n");
  28   printf("  -d, --device  <name>     name of CAN device [/dev/can0]\n");
  29   printf("  -i, --id  <num>          ID of generated messages\n");
  30   printf("  -f, --flags <num>        CAN filter flags\n");
  31   printf("  -w, --wait <num>         number of seconds to wait between messages\n");
  32   printf("  -p, --prefix <str>       string prefix for output\n");
  33   printf("  -V, --version            show version\n");
  34   printf("  -h, --help               this usage screen\n");
  35 }
  36
  37 int main(int argc, char *argv[])
  38 {
  39         static struct option long_opts[] = {
  40                 { "uldev", 1, 0, 'd' },
  41                 { "id",    1, 0, 'i' },
  42                 { "flags", 1, 0, 'f' },
  43                 { "wait",  1, 0, 'w' },
  44                 { "prefix",1, 0, 'p' },
  45                 { "version",0,0, 'V' },
  46                 { "help",  0, 0, 'h' },
  47                 { 0, 0, 0, 0}
  48         };
  49         int opt;
  50
  51         struct canmsg_t sendmsg={0,0,5,0,8,{1,2,3,4,5,6,7,8}};
  52         int fd, ret,i,j;
  53
  54         while ((opt = getopt_long(argc, argv, "d:i:f:w:p:Vh",
  55                             &long_opts[0], NULL)) != EOF) switch (opt) {
  56                 case 'd':
  57                         can_dev_name=optarg;
  58                         break;
  59                 case 'i':
  60                         canmsg_id = strtol(optarg,NULL,0);
  61                         break;
  62                 case 'f':
  63                         canmsg_flags = strtol(optarg,NULL,0);
  64                         break;
  65                 case 'w':
  66                         can_wait_sec = strtol(optarg,NULL,0);
  67                         break;
  68                 case 'p':
  69                         prt_prefix_in = optarg;
  70                         break;
  71                 case 'V':
  72                         fputs("LinCAN utilities v0.2\n", stdout);
  73                         exit(0);
  74                 case 'h':
  75                 default:
  76                         usage();
  77                         exit(opt == 'h' ? 0 : 1);
  78         }
  79
  80         if ((fd=open(can_dev_name, O_RDWR)) < 0) {
  81                 perror("open");
  82                 printf("Error opening %s\n", can_dev_name);
  83                 exit(1);
  84         }
  85
  86         snprintf(prt_prefix, PRT_PREFIX_SIZE, prt_prefix_in, can_dev_name);
  87
  88         j=0;
  89         while (1) {
  90                 for(i=0;i<10;i++) {
  91                         sendmsg.flags=canmsg_flags;
  92                         sendmsg.id=canmsg_id;
  93                         sendmsg.data[0]=i;
  94                         sendmsg.data[1]=j;
  95                         if ((ret=write(fd,&sendmsg,sizeof(struct canmsg_t))) < 0) {
  96                                 perror("write");
  97                                 printf("%sError sending message\n", prt_prefix);
  98                                 break;
  99                         }
 100                 }
 101                 printf("%sSent block of 10 messages #: %u\n", prt_prefix, j);
 102                 j++;
 103                 usleep(1000000*can_wait_sec);
 104         }
 105         close(fd);
 106         return 0;
 107 }
 108
 109