1 | /* |
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2 | * dout command |
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3 | * |
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4 | * COPYRIGHT (c) 1989-2009. |
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5 | * On-Line Applications Research Corporation (OAR). |
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6 | * |
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7 | * The license and distribution terms for this file may be |
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8 | * found in the file LICENSE in this distribution or at |
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9 | * http://www.rtems.com/license/LICENSE. |
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10 | * |
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11 | * $Id$ |
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12 | */ |
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13 | |
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14 | #include <stdio.h> |
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15 | #include <stdlib.h> |
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16 | #include <rtems.h> |
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17 | #include <rtems/shell.h> |
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18 | #include <rtems/stringto.h> |
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19 | #include "multiio.h" |
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20 | |
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21 | static char dout_usage[] = |
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22 | "Usage: %s bit value\n" |
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23 | "Where: bit must be 0-%d\n" |
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24 | " value must be 0 or 1\n"; |
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25 | |
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26 | #define PRINT_USAGE() \ |
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27 | printf( dout_usage, argv[0], maximum ) |
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28 | |
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29 | int main_multiio_dout(int argc, char **argv) |
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30 | { |
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31 | int bit; |
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32 | int value; |
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33 | bool fail = false; |
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34 | int maximum = rtems_dout_get_maximum(); |
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35 | |
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36 | /* |
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37 | * Verify that we have the right number of arguments. |
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38 | */ |
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39 | if ( argc != 3 ) { |
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40 | printf( "Incorrect number of arguments\n" ); |
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41 | PRINT_USAGE(); |
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42 | return -1; |
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43 | } |
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44 | |
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45 | /* |
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46 | * Convert the string arguments into number values |
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47 | */ |
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48 | if ( rtems_string_to_int( argv[1], &bit, NULL, 0 ) ) { |
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49 | printf( "Bit (%s) is not a number\n", argv[1] ); |
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50 | fail = true; |
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51 | } |
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52 | |
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53 | if ( rtems_string_to_int(argv[2], &value, NULL, 0) ) { |
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54 | printf( "Value (%s) is not a number\n", argv[2] ); |
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55 | fail = true; |
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56 | } |
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57 | |
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58 | /* |
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59 | * Validate the output bit and value. |
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60 | */ |
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61 | if ( bit < 0 || bit > maximum ) { |
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62 | printf( "Bit number must be 0-maximum\n" ); |
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63 | fail = true; |
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64 | } |
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65 | |
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66 | if ( value != 0 && value != 1 ) { |
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67 | printf( "Value must be 0 or 1\n" ); |
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68 | fail = true; |
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69 | } |
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70 | |
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71 | if ( fail ) { |
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72 | PRINT_USAGE(); |
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73 | return -1; |
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74 | } |
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75 | |
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76 | /* |
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77 | * Now write the value |
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78 | */ |
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79 | printf( "Write %d to to bit %d\n", value, bit ); |
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80 | rtems_set_dout(bit, value); |
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81 | |
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82 | return 0; |
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83 | } |
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84 | |
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85 | rtems_shell_cmd_t Shell_MULTIIO_DOUT_Command = { |
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86 | "multiio_dout", /* name */ |
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87 | "Write Discrete Outputs", /* usage */ |
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88 | "multiio", /* topic */ |
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89 | main_multiio_dout, /* command */ |
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90 | NULL, /* alias */ |
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91 | NULL /* next */ |
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92 | }; |
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93 | |
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94 | rtems_shell_alias_t Shell_MULTIIO_DOUT_Alias = { |
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95 | "multiio_dout", /* command */ |
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96 | "dout" /* alias */ |
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97 | }; |
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