avr/cmd_misc.c

   1 /*
   2  * (C) Copyright 2014 Leo C. <erbl259-lmu@yahoo.de>
   3  *
   4  * Copyright 2000-2009
   5  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   6  *
   7  * SPDX-License-Identifier:     GPL-2.0+
   8  */
   9
  10 #include "common.h"
  11 #include <stdlib.h>
  12
  13 #include "command.h"
  14 #include "timer.h"
  15 #include "con-utils.h"
  16
  17
  18 command_ret_t do_echo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  19 {
  20         uint_fast8_t putnl = 1;
  21
  22         (void) cmdtp; (void) flag;
  23
  24         for (uint_fast8_t i = 1; i < argc; i++) {
  25
  26                 uint_fast8_t backslash = 0;
  27                 char *p = argv[i];
  28                 char c;
  29
  30                 if (i != 1)
  31                         putchar(' ');
  32                 while ((c = *p++) != '\0') {
  33
  34                         if(backslash) {
  35                                 backslash = 0;
  36                                 if (c == 'c') {
  37                                         putnl = 0;
  38                                         continue;
  39                                 } else
  40                                         putchar('\\');
  41                         } else {
  42                                 if (c == '\\') {
  43                                         backslash = 1;
  44                                         continue;
  45                                 }
  46                         }
  47                         putchar(c);
  48                 }
  49         }
  50
  51         if (putnl)
  52                 putchar('\n');
  53
  54         return CMD_RET_SUCCESS;
  55 }
  56
  57
  58 command_ret_t do_sleep(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  59 {
  60         unsigned long start = get_timer(0);
  61         unsigned long delay;
  62         char *sp;
  63         uint_fast8_t millisec = 0;
  64
  65         (void) cmdtp; (void) flag;
  66
  67         if (argc != 2)
  68                 return CMD_RET_USAGE;
  69
  70         delay = strtoul(argv[1], &sp, 10);
  71
  72         if (*sp == 'm') {
  73                 millisec = 1;
  74                 sp++;
  75         }
  76         if (*sp == 's')
  77                 sp++;
  78         if (*sp != '\0')
  79                 return CMD_RET_USAGE;
  80
  81         if (!millisec)
  82                 delay *= 1000;
  83
  84         while (get_timer(start) < delay) {
  85                 if (ctrlc())
  86                         return CMD_RET_FAILURE;
  87
  88                 udelay(100);
  89         }
  90
  91         return CMD_RET_SUCCESS;
  92 }