1 | /* |
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2 | * din 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 | #define __need_getopt_newlib |
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22 | #include <getopt.h> |
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23 | |
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24 | static void dio_read( |
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25 | int *dio, |
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26 | int max |
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27 | ) |
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28 | { |
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29 | int bit; |
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30 | |
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31 | for ( bit=0 ; bit<max ; bit++ ) { |
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32 | dio[bit] = rtems_din_get(bit); |
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33 | } |
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34 | } |
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35 | |
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36 | static void dio_printf( |
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37 | int *dio, |
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38 | int max |
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39 | ) |
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40 | { |
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41 | struct timespec ts; |
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42 | int bit; |
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43 | |
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44 | /* TODO: Fix assumption that max is divisible by 4 and fits on a line */ |
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45 | (void) rtems_clock_get_uptime( &ts ); |
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46 | printf( "%ld:%ld ", ts.tv_sec, ts.tv_nsec ); |
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47 | for ( bit=0 ; bit<max ; bit+=4 ) { |
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48 | printf( |
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49 | "%d%d%d%d%s", |
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50 | dio[bit + 0], dio[bit + 1], |
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51 | dio[bit + 2], dio[bit + 3], |
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52 | ((bit == 44) ? "\n" : " " ) |
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53 | ); |
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54 | } |
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55 | } |
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56 | |
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57 | static char din_usage[] = |
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58 | "Usage: %s [-i iterations] [-p period] [-v]\n" |
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59 | "Where: maximum iterations defaults to 1\n" |
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60 | " the period is in milliseconds and defaults to 1000\n"; |
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61 | |
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62 | #define PRINT_USAGE() \ |
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63 | printf( din_usage, argv[0] ) |
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64 | |
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65 | int main_multiio_din(int argc, char **argv) |
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66 | { |
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67 | int milliseconds; |
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68 | int maximum; |
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69 | int iterations; |
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70 | char ch; |
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71 | bool changed; |
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72 | bool verbose; |
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73 | struct getopt_data getopt_reent; |
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74 | int dio_last[48]; |
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75 | int dio_current[48]; |
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76 | const char *s; |
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77 | int max_dins = rtems_din_get_maximum(); |
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78 | |
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79 | /* |
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80 | * Parse arguments here |
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81 | */ |
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82 | milliseconds = 1000; |
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83 | maximum = 1; |
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84 | verbose = false; |
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85 | |
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86 | memset(&getopt_reent, 0, sizeof(getopt_data)); |
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87 | while ((ch = getopt_r(argc, argv, "i:p:v", &getopt_reent)) != -1) { |
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88 | switch (ch) { |
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89 | case 'i': /* maximum iterations */ |
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90 | s = getopt_reent.optarg; |
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91 | if ( rtems_string_to_int( s, &maximum, NULL, 0 ) ) { |
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92 | printf( "Maximum iterations (%s) is not a number\n", s ); |
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93 | PRINT_USAGE(); |
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94 | return -1; |
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95 | } |
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96 | |
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97 | break; |
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98 | case 'p': /* sampling period */ |
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99 | s = getopt_reent.optarg; |
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100 | if ( rtems_string_to_int( s, &milliseconds, NULL, 0 ) ) { |
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101 | printf( "Sampling period (%s) is not a number\n", s ); |
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102 | PRINT_USAGE(); |
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103 | return -1; |
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104 | } |
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105 | if ( milliseconds == 0 ) { |
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106 | printf( "Sampling period (%d) is 0\n", milliseconds ); |
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107 | PRINT_USAGE(); |
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108 | return -1; |
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109 | } |
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110 | break; |
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111 | case 'v': /* verbose*/ |
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112 | verbose = true; |
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113 | break; |
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114 | default: |
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115 | printf( din_usage, argv[0] ); |
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116 | return -1; |
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117 | } |
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118 | } |
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119 | |
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120 | if ( maximum != 1 ) |
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121 | printf( |
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122 | "Polling discrete inputs for %d iterations with %d msec period\n", |
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123 | maximum, |
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124 | milliseconds |
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125 | ); |
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126 | |
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127 | /* |
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128 | * Now sample in the loop |
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129 | */ |
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130 | changed = false; |
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131 | |
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132 | iterations = 1; |
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133 | while (1) { |
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134 | dio_read( dio_current, max_dins ); |
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135 | |
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136 | if ( iterations == 1 ) |
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137 | changed = true; |
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138 | else if ( memcmp( dio_last, dio_current, sizeof(dio_current) ) ) |
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139 | changed = true; |
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140 | |
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141 | if ( verbose || changed ) { |
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142 | dio_printf( dio_current, max_dins ); |
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143 | memcpy( dio_last, dio_current, sizeof(dio_current) ); |
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144 | changed = false; |
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145 | } |
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146 | |
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147 | if (iterations++ >= maximum ) |
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148 | break; |
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149 | |
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150 | (void) rtems_task_wake_after( RTEMS_MILLISECONDS_TO_TICKS(milliseconds) ); |
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151 | } |
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152 | return 0; |
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153 | } |
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154 | |
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155 | rtems_shell_cmd_t Shell_MULTIIO_DIN_Command = { |
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156 | "multiio_din", /* name */ |
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157 | "Read Discrete Inputs", /* usage */ |
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158 | "multiio", /* topic */ |
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159 | main_multiio_din, /* command */ |
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160 | NULL, /* alias */ |
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161 | NULL /* next */ |
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162 | }; |
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163 | |
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164 | rtems_shell_alias_t Shell_MULTIIO_DIN_Alias = { |
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165 | "multiio_adc", /* command */ |
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166 | "adc" /* alias */ |
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167 | }; |
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