git.gag.com Git - fw/altos/blob - src-avr/ao_cmd.c

   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; 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 __xdata uint16_t ao_cmd_lex_i;
  21 __xdata uint32_t ao_cmd_lex_u32;
  22 __xdata char    ao_cmd_lex_c;
  23 __xdata enum ao_cmd_status ao_cmd_status;
  24
  25 #define CMD_LEN 32
  26
  27 static __xdata char     cmd_line[CMD_LEN];
  28 static __xdata uint8_t  cmd_len;
  29 static __xdata uint8_t  cmd_i;
  30
  31 static void
  32 put_string(char *s)
  33 {
  34         __xdata char    c;
  35         while ((c = *s++))
  36                 putchar(c);
  37 }
  38
  39 static void
  40 readline(void)
  41 {
  42         __xdata char c;
  43         if (ao_echo())
  44                 put_string("> ");
  45         cmd_len = 0;
  46         for (;;) {
  47                 flush();
  48                 printf ("readline sleeping...\n");
  49                 c = getchar();
  50                 /* backspace/delete */
  51                 if (c == '\010' || c == '\177') {
  52                         if (cmd_len != 0) {
  53                                 if (ao_echo())
  54                                         put_string("\010 \010");
  55                                 --cmd_len;
  56                         }
  57                         continue;
  58                 }
  59
  60                 /* ^U */
  61                 if (c == '\025') {
  62                         while (cmd_len != 0) {
  63                                 if (ao_echo())
  64                                         put_string("\010 \010");
  65                                 --cmd_len;
  66                         }
  67                         continue;
  68                 }
  69
  70                 /* map CR to NL */
  71                 if (c == '\r')
  72                         c = '\n';
  73
  74                 if (c == '\n') {
  75                         if (ao_echo())
  76                                 putchar('\n');
  77                         break;
  78                 }
  79
  80                 if (cmd_len >= CMD_LEN - 2) {
  81                         if (ao_echo())
  82                                 putchar('\007');
  83                         continue;
  84                 }
  85                 cmd_line[cmd_len++] = c;
  86                 if (ao_echo())
  87                         putchar(c);
  88         }
  89         cmd_line[cmd_len++] = '\n';
  90         cmd_line[cmd_len++] = '\0';
  91         printf("cmd_len %d\n", cmd_len);
  92         cmd_i = 0;
  93 }
  94
  95 void
  96 ao_cmd_lex(void)
  97 {
  98         ao_cmd_lex_c = '\n';
  99         if (cmd_i < cmd_len)
 100                 ao_cmd_lex_c = cmd_line[cmd_i++];
 101 }
 102
 103 static void
 104 putnibble(uint8_t v)
 105 {
 106         if (v < 10)
 107                 putchar(v + '0');
 108         else
 109                 putchar(v + ('a' - 10));
 110 }
 111
 112 void
 113 ao_cmd_put16(uint16_t v)
 114 {
 115         int8_t i;
 116         for (i = 3; i >= 0; i--)
 117                 putnibble((v >> (i << 2)) & 0xf);
 118 }
 119
 120 void
 121 ao_cmd_put8(uint8_t v)
 122 {
 123         putnibble((v >> 4) & 0xf);
 124         putnibble(v & 0xf);
 125 }
 126
 127 void
 128 ao_cmd_white(void)
 129 {
 130         while (ao_cmd_lex_c == ' ' || ao_cmd_lex_c == '\t')
 131                 ao_cmd_lex();
 132 }
 133
 134 void
 135 ao_cmd_hex(void)
 136 {
 137         __xdata uint8_t r = ao_cmd_lex_error;
 138
 139         ao_cmd_lex_i = 0;
 140         ao_cmd_white();
 141         for(;;) {
 142                 if ('0' <= ao_cmd_lex_c && ao_cmd_lex_c <= '9')
 143                         ao_cmd_lex_i = (ao_cmd_lex_i << 4) | (ao_cmd_lex_c - '0');
 144                 else if ('a' <= ao_cmd_lex_c && ao_cmd_lex_c <= 'f')
 145                         ao_cmd_lex_i = (ao_cmd_lex_i << 4) | (ao_cmd_lex_c - 'a' + 10);
 146                 else if ('A' <= ao_cmd_lex_c && ao_cmd_lex_c <= 'F')
 147                         ao_cmd_lex_i = (ao_cmd_lex_i << 4) | (ao_cmd_lex_c - 'A' + 10);
 148                 else
 149                         break;
 150                 r = ao_cmd_success;
 151                 ao_cmd_lex();
 152         }
 153         if (r != ao_cmd_success)
 154                 ao_cmd_status = r;
 155 }
 156
 157 void
 158 ao_cmd_decimal(void)
 159 {
 160         __xdata uint8_t r = ao_cmd_lex_error;
 161
 162         ao_cmd_lex_u32 = 0;
 163         ao_cmd_white();
 164         for(;;) {
 165                 if ('0' <= ao_cmd_lex_c && ao_cmd_lex_c <= '9')
 166                         ao_cmd_lex_u32 = (ao_cmd_lex_u32 * 10) + (ao_cmd_lex_c - '0');
 167                 else
 168                         break;
 169                 r = ao_cmd_success;
 170                 ao_cmd_lex();
 171         }
 172         if (r != ao_cmd_success)
 173                 ao_cmd_status = r;
 174         ao_cmd_lex_i = (uint16_t) ao_cmd_lex_u32;
 175 }
 176
 177 uint8_t
 178 ao_match_word(__code char *word)
 179 {
 180         while (*word) {
 181                 if (ao_cmd_lex_c != *word) {
 182                         ao_cmd_status = ao_cmd_syntax_error;
 183                         return 0;
 184                 }
 185                 word++;
 186                 ao_cmd_lex();
 187         }
 188         return 1;
 189 }
 190
 191 #if 0
 192 static void
 193 eol(void)
 194 {
 195         while (ao_cmd_lex_c != '\n')
 196                 ao_cmd_lex();
 197 }
 198 #endif
 199
 200 static void
 201 echo(void)
 202 {
 203         ao_cmd_hex();
 204         if (ao_cmd_status == ao_cmd_success)
 205                 ao_stdios[ao_cur_stdio].echo = ao_cmd_lex_i != 0;
 206 }
 207
 208 static void
 209 ao_reboot(void)
 210 {
 211         ao_cmd_white();
 212         if (!ao_match_word("eboot"))
 213                 return;
 214 #ifdef AVR
 215 #else
 216         WDCTL = WDCTL_EN | WDCTL_MODE_WATCHDOG | WDCTL_INT_64;
 217 #endif
 218         ao_delay(AO_SEC_TO_TICKS(2));
 219         ao_panic(AO_PANIC_REBOOT);
 220 }
 221
 222 static void
 223 version(void)
 224 {
 225         printf("manufacturer     %s\n", ao_manufacturer);
 226         printf("product          %s\n", ao_product);
 227 //      printf("serial-number    %u\n", ao_romconfig.serial_number);
 228         printf("software-version %s\n", ao_version);
 229 }
 230
 231 static const char help_txt[] = "All numbers are in hex";
 232
 233 #define NUM_CMDS        11
 234
 235 static __code struct ao_cmds    *__xdata (ao_cmds[NUM_CMDS]);
 236 static __xdata uint8_t          ao_ncmds;
 237
 238 static void
 239 help(void)
 240 {
 241         __xdata uint8_t cmds;
 242         __xdata uint8_t cmd;
 243         __code struct ao_cmds * __xdata cs;
 244         puts(help_txt);
 245         for (cmds = 0; cmds < ao_ncmds; cmds++) {
 246                 cs = ao_cmds[cmds];
 247                 for (cmd = 0; cs[cmd].func; cmd++)
 248                         printf("%-45s %s\n",
 249                                 cs[cmd].help,
 250                                 cs[cmd].help+1+strlen(cs[cmd].help));
 251         }
 252 }
 253
 254 static void
 255 report(void)
 256 {
 257         switch(ao_cmd_status) {
 258         case ao_cmd_lex_error:
 259         case ao_cmd_syntax_error:
 260                 puts("Syntax error");
 261                 ao_cmd_status = 0;
 262         default:
 263                 break;
 264         }
 265 }
 266
 267 void
 268 ao_cmd_register(__code struct ao_cmds *cmds)
 269 {
 270         if (ao_ncmds >= NUM_CMDS)
 271                 ao_panic(AO_PANIC_CMD);
 272         ao_cmds[ao_ncmds++] = cmds;
 273 }
 274
 275 void
 276 ao_cmd(void)
 277 {
 278         __xdata char    c;
 279         __xdata uint8_t cmd, cmds;
 280         __code struct ao_cmds * __xdata cs;
 281         void (*__xdata func)(void);
 282
 283         printf ("ao_cmd\n");
 284         for (;;) {
 285                 readline();
 286                 ao_cmd_lex();
 287                 ao_cmd_white();
 288                 c = ao_cmd_lex_c;
 289                 ao_cmd_lex();
 290                 if (c == '\r' || c == '\n')
 291                         continue;
 292                 func = (void (*)(void)) NULL;
 293                 for (cmds = 0; cmds < ao_ncmds; cmds++) {
 294                         cs = ao_cmds[cmds];
 295                         for (cmd = 0; cs[cmd].func; cmd++)
 296                                 if (cs[cmd].help[0] == c) {
 297                                         func = cs[cmd].func;
 298                                         break;
 299                                 }
 300                         if (func)
 301                                 break;
 302                 }
 303                 if (func)
 304                         (*func)();
 305                 else
 306                         ao_cmd_status = ao_cmd_syntax_error;
 307                 report();
 308         }
 309 }
 310
 311 __xdata struct ao_task ao_cmd_task;
 312
 313 __code struct ao_cmds   ao_base_cmds[] = {
 314         { help,         "?\0Print this message" },
 315         { ao_task_info, "T\0Show task states" },
 316         { echo,         "E <0 off, 1 on>\0Set command echo mode" },
 317         { ao_reboot,    "r eboot\0Reboot" },
 318         { version,      "v\0Show version" },
 319         { 0,    NULL },
 320 };
 321
 322 void
 323 ao_cmd_init(void)
 324 {
 325         ao_cmd_register(&ao_base_cmds[0]);
 326         ao_add_task(&ao_cmd_task, ao_cmd, "cmd");
 327 }