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   1 /*
   2  * Copyright © 2009 Keith Packard <keithp@keithp.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  17  */
  18
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include <unistd.h>
  22 #include <getopt.h>
  23 #include "cc-usb.h"
  24 #include "cc.h"
  25
  26 #define NUM_BLOCK       512
  27
  28 static const struct option options[] = {
  29         { .name = "tty", .has_arg = 1, .val = 'T' },
  30         { .name = "device", .has_arg = 1, .val = 'D' },
  31         { 0, 0, 0, 0},
  32 };
  33
  34 static void usage(char *program)
  35 {
  36         fprintf(stderr, "usage: %s [--tty <tty-name>] [--device <device-name>\n", program);
  37         exit(1);
  38 }
  39
  40 static uint8_t
  41 log_checksum(int d[8])
  42 {
  43         uint8_t sum = 0x5a;
  44         int     i;
  45
  46         for (i = 0; i < 8; i++)
  47                 sum += (uint8_t) d[i];
  48         return -sum;
  49 }
  50
  51 static const char *state_names[] = {
  52         "startup",
  53         "idle",
  54         "pad",
  55         "boost",
  56         "fast",
  57         "coast",
  58         "drogue",
  59         "main",
  60         "landed",
  61         "invalid"
  62 };
  63
  64 int
  65 main (int argc, char **argv)
  66 {
  67         struct cc_usb   *cc;
  68         char            *tty = NULL;
  69         char            *device = NULL;
  70         int             c;
  71         char            line[8192];
  72         FILE            *out;
  73         char            *filename;
  74         int             serial_number;
  75         char            cmd;
  76         int             tick, a, b;
  77         int             block;
  78         int             addr;
  79         int             received_addr;
  80         int             data[8];
  81         int             done;
  82         int             column;
  83
  84         while ((c = getopt_long(argc, argv, "T:D:", options, NULL)) != -1) {
  85                 switch (c) {
  86                 case 'T':
  87                         tty = optarg;
  88                         break;
  89                 case 'D':
  90                         device = optarg;
  91                         break;
  92                 default:
  93                         usage(argv[0]);
  94                         break;
  95                 }
  96         }
  97         if (!tty)
  98                 tty = cc_usbdevs_find_by_arg(device, "TeleMetrum");
  99         if (!tty)
 100                 tty = getenv("ALTOS_TTY");
 101         if (!tty)
 102                 tty="/dev/ttyACM0";
 103         cc = cc_usb_open(tty);
 104         if (!cc)
 105                 exit(1);
 106         /* send a 'version' command followed by a 'log' command */
 107         cc_usb_printf(cc, "v\n");
 108         out = NULL;
 109         for (;;) {
 110                 cc_usb_getline(cc, line, sizeof (line));
 111                 if (sscanf(line, "serial-number %u", &serial_number) == 1) {
 112                         filename = cc_make_filename(serial_number, "eeprom");
 113                         out = fopen (filename, "w");
 114                         if (!out) {
 115                                 perror(filename);
 116                         }
 117                         fprintf (out, "%s\n", line);
 118                 }
 119                 if (!strncmp(line, "software-version", 16))
 120                         break;
 121         }
 122         if (!out) {
 123                 fprintf(stderr, "no serial number found\n");
 124                 cc_usb_close(cc);
 125                 exit(1);
 126         }
 127         printf ("Serial number: %d\n", serial_number);
 128         printf ("File name:     %s\n", filename);
 129         done = 0;
 130         column = 0;
 131         for (block = 0; !done && block < 511; block++) {
 132                 cc_usb_printf(cc, "e %x\n", block);
 133                 if (column == 64) {
 134                         putchar('\n');
 135                         column = 0;
 136                 }
 137                 putchar('.'); fflush(stdout); column++;
 138                 for (addr = 0; addr < 0x100;) {
 139                         cc_usb_getline(cc, line, sizeof (line));
 140                         if (sscanf(line, "00%x %x %x %x %x %x %x %x %x",
 141                                           &received_addr,
 142                                           &data[0], &data[1], &data[2], &data[3],
 143                                           &data[4], &data[5], &data[6], &data[7]) == 9)
 144                         {
 145                                 if (received_addr != addr)
 146                                         fprintf(stderr, "data out of sync at 0x%x\n",
 147                                                 block * 256 + received_addr);
 148
 149                                 if (log_checksum(data) != 0)
 150                                         fprintf (stderr, "invalid checksum at 0x%x\n",
 151                                                  block * 256 + received_addr);
 152
 153                                 cmd = data[0];
 154                                 tick = data[2] + (data[3] << 8);
 155                                 a = data[4] + (data[5] << 8);
 156                                 b = data[6] + (data[7] << 8);
 157                                 if (cmd == 'S' && a <= 8) {
 158                                         if (column) putchar('\n');
 159                                         printf("%s\n", state_names[a]);
 160                                         column = 0;
 161                                 }
 162                                 if (out) {
 163                                         fprintf(out, "%c %4x %4x %4x\n",
 164                                                 cmd, tick, a, b);
 165                                         if (cmd == 'S' && a == 8) {
 166                                                 fclose(out);
 167                                                 out = NULL;
 168                                                 done = 1;
 169                                         }
 170                                 }
 171                                 addr += 8;
 172                         }
 173                 }
 174         }
 175         if (column)
 176                 putchar('\n');
 177         if (out)
 178                 fclose (out);
 179         cc_usb_close(cc);
 180         exit (0);
 181 }