avr/cmd_misc.c

   1 /*
   2  * Copyright 2000-2009
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include "common.h"
   9 #include <stdlib.h>
  10
  11 #include "command.h"
  12 #include "timer.h"
  13 #include "con-utils.h"
  14
  15
  16 command_ret_t do_echo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  17 {
  18         uint_fast8_t putnl = 1;
  19
  20         (void) cmdtp; (void) flag;
  21
  22         for (uint_fast8_t i = 1; i < argc; i++) {
  23
  24                 uint_fast8_t backslash = 0;
  25                 char *p = argv[i];
  26                 char c;
  27
  28                 if (i != 1)
  29                         putchar(' ');
  30                 while ((c = *p++) != '\0') {
  31
  32                         if(backslash) {
  33                                 backslash = 0;
  34                                 if (c == 'c') {
  35                                         putnl = 0;
  36                                         continue;
  37                                 } else
  38                                         putchar('\\');
  39                         } else {
  40                                 if (c == '\\') {
  41                                         backslash = 1;
  42                                         continue;
  43                                 }
  44                         }
  45                         putchar(c);
  46                 }
  47         }
  48
  49         if (putnl)
  50                 putchar('\n');
  51
  52         return CMD_RET_SUCCESS;
  53 }
  54
  55
  56 command_ret_t do_sleep(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  57 {
  58         unsigned long start = get_timer(0);
  59         unsigned long delay;
  60         char *sp;
  61         uint_fast8_t millisec = 0;
  62
  63         (void) cmdtp; (void) flag;
  64
  65         if (argc != 2)
  66                 return CMD_RET_USAGE;
  67
  68         delay = strtoul(argv[1], &sp, 10);
  69
  70         if (*sp == 'm') {
  71                 millisec = 1;
  72                 sp++;
  73         }
  74         if (*sp == 's')
  75                 sp++;
  76         if (*sp != '\0')
  77                 return CMD_RET_USAGE;
  78
  79         if (!millisec)
  80                 delay *= 1000;
  81
  82         while (get_timer(start) < delay) {
  83                 if (ctrlc())
  84                         return CMD_RET_FAILURE;
  85
  86                 udelay(100);
  87         }
  88
  89         return CMD_RET_SUCCESS;
  90 }
  91