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   1 /*
   2  * Copyright © 2011 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; version 2 of the License.
   7  *
   8  * This program is distributed in the hope that it will be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  16  */
  17
  18 #include "ao.h"
  19
  20 static struct ao_task ao_log_task;
  21
  22 uint8_t         ao_log_running;
  23 uint8_t         ao_log_mutex;
  24 uint32_t        ao_log_start_pos;
  25 uint32_t        ao_log_end_pos;
  26 uint32_t        ao_log_current_pos;
  27
  28 #define AO_LOG_TELESCIENCE_START        ((uint8_t) 's')
  29 #define AO_LOG_TELESCIENCE_DATA         ((uint8_t) 'd')
  30
  31 struct ao_log_telescience {
  32         uint8_t         type;
  33         uint8_t         csum;
  34         uint16_t        tick;
  35         union {
  36                 uint8_t         bytes[28];
  37                 uint16_t        adc[NUM_ADC];
  38         } u;
  39 };
  40
  41 static struct ao_log_telescience log;
  42 static uint8_t  ao_log_adc_pos;
  43
  44 static uint8_t
  45 ao_log_csum(__xdata uint8_t *b) __reentrant
  46 {
  47         uint8_t sum = 0x5a;
  48         uint8_t i;
  49
  50         for (i = 0; i < sizeof (struct ao_log_telescience); i++)
  51                 sum += *b++;
  52         return -sum;
  53 }
  54
  55 uint8_t
  56 ao_log_telescience_data(struct ao_log_telescience *log)
  57 {
  58         uint8_t wrote = 0;
  59
  60         log->csum = 0;
  61         log->csum = ao_log_csum((__xdata uint8_t *) log);
  62         ao_mutex_get(&ao_log_mutex); {
  63                 if (ao_log_current_pos >= ao_log_end_pos && ao_log_running)
  64                         ao_log_stop();
  65                 if (ao_log_running) {
  66                         wrote = 1;
  67                         ao_storage_write(ao_log_current_pos,
  68                                          log,
  69                                          sizeof (struct ao_log_telescience));
  70                         ao_log_current_pos += sizeof (struct ao_log_telescience);
  71                 }
  72         } ao_mutex_put(&ao_log_mutex);
  73         return wrote;
  74 }
  75
  76 static uint8_t
  77 ao_log_valid(struct ao_log_telescience *log)
  78 {
  79         uint8_t *d;
  80         uint8_t i;
  81         d = (uint8_t *) log;
  82         for (i = 0; i < sizeof (struct ao_log_telescience); i++)
  83                 if (d[i] != 0xff)
  84                         return 1;
  85         return 0;
  86 }
  87
  88 void
  89 ao_log_telescience(void)
  90 {
  91         ao_storage_setup();
  92
  93         /* Find end of data */
  94         while (ao_log_start_pos < ao_log_end_pos) {
  95                 if (!(ao_storage_read(ao_log_start_pos, &log, sizeof (struct ao_log_telescience))))
  96                         break;
  97                 if (!ao_log_valid(&log))
  98                         break;
  99         }
 100         ao_log_current_pos = ao_log_start_pos;
 101         ao_log_end_pos = ao_storage_config;
 102         for (;;) {
 103                 while (!ao_log_running)
 104                         ao_sleep(&ao_log_running);
 105
 106                 memset(&log, '\0', sizeof (struct ao_log_telescience));
 107                 log.type = AO_LOG_TELESCIENCE_START;
 108                 log.tick = ao_time();
 109                 ao_log_telescience_data(&log);
 110                 /* Write the whole contents of the ring to the log
 111                  * when starting up.
 112                  */
 113                 ao_log_adc_pos = ao_adc_ring_next(ao_adc_head);
 114                 log.type = AO_LOG_TELESCIENCE_DATA;
 115                 while (ao_log_running) {
 116                         /* Write samples to EEPROM */
 117                         while (ao_log_adc_pos != ao_adc_head) {
 118                                 log.tick = ao_adc_ring[ao_log_adc_pos].tick;
 119                                 memcpy(&log.u.adc, (void *) ao_adc_ring[ao_log_adc_pos].adc,
 120                                        NUM_ADC * sizeof (uint16_t));
 121                                 ao_log_telescience_data(&log);
 122                                 ao_log_adc_pos = ao_adc_ring_next(ao_log_adc_pos);
 123                         }
 124                         /* Wait for more ADC data to arrive */
 125                         ao_sleep((void *) &ao_adc_head);
 126                 }
 127         }
 128 }
 129
 130 void
 131 ao_log_start(void)
 132 {
 133         printf("Log goes from %ld to %ld\n", ao_log_current_pos, ao_log_end_pos);
 134         ao_log_running = 1;
 135         ao_wakeup(&ao_log_running);
 136 }
 137
 138 void
 139 ao_log_stop(void)
 140 {
 141         printf ("Log stopped at %ld\n", ao_log_current_pos);
 142         ao_log_running = 0;
 143         ao_wakeup((void *) &ao_adc_head);
 144 }
 145
 146 void
 147 ao_log_set(void)
 148 {
 149         ao_cmd_hex();
 150         if (ao_cmd_status == ao_cmd_success) {
 151                 if (ao_cmd_lex_i)
 152                         ao_log_start();
 153                 else
 154                         ao_log_stop();
 155         }
 156 }
 157
 158 void
 159 ao_log_list(void)
 160 {
 161         uint32_t        pos;
 162         uint32_t        start = 0;
 163         uint8_t         flight = 0;
 164
 165         for (pos = 0; pos < ao_storage_config; pos += sizeof (struct ao_log_telescience)) {
 166                 if (!ao_storage_read(pos, &log, sizeof (struct ao_log_telescience)))
 167                         break;
 168                 if (!ao_log_valid(&log) || log.type == AO_LOG_TELESCIENCE_START) {
 169                         if (pos != start) {
 170                                 printf("flight %d start %x end %x\n",
 171                                        flight,
 172                                        (uint16_t) (start >> 8),
 173                                        (uint16_t) ((pos + 0xff) >> 8));
 174                         }
 175                         if (!ao_log_valid(&log))
 176                                 break;
 177                         start = pos;
 178                         flight++;
 179                 }
 180         }
 181         printf ("done\n");
 182 }
 183
 184 void
 185 ao_log_delete(void)
 186 {
 187         uint32_t        pos;
 188
 189         ao_cmd_hex();
 190         if (ao_cmd_status != ao_cmd_success)
 191                 return;
 192         if (ao_cmd_lex_i != 1) {
 193                 ao_cmd_status = ao_cmd_syntax_error;
 194                 printf("No such flight: %d\n", ao_cmd_lex_i);
 195                 return;
 196         }
 197         for (pos = 0; pos < ao_storage_config; pos += ao_storage_block) {
 198                 if (!ao_storage_read(pos, &log, sizeof (struct ao_log_telescience)))
 199                         break;
 200                 if (!ao_log_valid(&log))
 201                         break;
 202                 ao_storage_erase(pos);
 203         }
 204         if (pos == 0)
 205                 printf("No such flight: %d\n", ao_cmd_lex_i);
 206         else
 207                 printf ("Erased\n");
 208 }
 209
 210 const struct ao_cmds ao_log_cmds[] = {
 211         { ao_log_set,   "L <0 off, 1 on>\0Set logging mode" },
 212         { ao_log_list,  "l\0List stored flight logs" },
 213         { ao_log_delete, "d 1\0Delete all stored flights" },
 214         { 0,    NULL },
 215 };
 216
 217 void
 218 ao_log_init(void)
 219 {
 220         ao_log_running = 0;
 221
 222         ao_cmd_register(&ao_log_cmds[0]);
 223
 224         ao_add_task(&ao_log_task, ao_log_telescience, "log");
 225 }