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amiro-os / core / src / aos_system.c @ f606e2bf

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/*
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AMiRo-OS is an operating system designed for the Autonomous Mini Robot (AMiRo) platform.
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Copyright (C) 2016..2019  Thomas Schöpping et al.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program.  If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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 * @file    aos_system.c
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 * @brief   System code.
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 * @details Contains system initialization and shutdown routines
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 *          and system shell commands.
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 *
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 * @addtogroup aos_system
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 * @{
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 */
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#include <amiroos.h>
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#include <stdarg.h>
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#include <string.h>
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#include <stdlib.h>
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#if (AMIROOS_CFG_TESTS_ENABLE == true)
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#include <ch_test.h>
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#include <rt_test_root.h>
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#endif /* (AMIROOS_CFG_TESTS_ENABLE == true) */
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/******************************************************************************/
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/* LOCAL DEFINITIONS                                                          */
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/******************************************************************************/
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43
/**
44
 * @brief   Period of the system timer.
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 */
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#define SYSTIMER_PERIOD               (TIME_MAX_SYSTIME - CH_CFG_ST_TIMEDELTA)
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48
/**
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 * @brief   Width of the printable system info text.
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 */
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#define SYSTEM_INFO_WIDTH             80
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/**
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 * @brief   Width of the name column of the system info table.
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 */
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#define SYSTEM_INFO_NAMEWIDTH         20
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/******************************************************************************/
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/* EXPORTED VARIABLES                                                         */
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/******************************************************************************/
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/**
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 * @brief   Global system object.
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 */
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aos_system_t aos;
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/******************************************************************************/
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/* LOCAL TYPES                                                                */
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/******************************************************************************/
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/******************************************************************************/
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/* LOCAL VARIABLES                                                            */
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/******************************************************************************/
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/*
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 * forward declarations
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 */
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#if (AMIROOS_CFG_SHELL_ENABLE == true) || defined(__DOXYGEN__)
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static int _shellcmd_configcb(BaseSequentialStream* stream, int argc, char* argv[]);
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static int _shellcmd_infocb(BaseSequentialStream* stream, int argc, char* argv[]);
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static int _shellcmd_shutdowncb(BaseSequentialStream* stream, int argc, char* argv[]);
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#if (AMIROOS_CFG_TESTS_ENABLE == true) || defined(__DOXYGEN__)
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static int _shellcmd_kerneltestcb(BaseSequentialStream* stream, int argc, char* argv[]);
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#endif /* (AMIROOS_CFG_TESTS_ENABLE == true) */
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#endif /* (AMIROOS_CFG_SHELL_ENABLE == true) */
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/**
88
 * @brief   Timer to accumulate system uptime.
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 */
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static virtual_timer_t _systimer;
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/**
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 * @brief   Accumulated system uptime.
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 */
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static aos_timestamp_t _uptime;
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97
/**
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 * @brief   Timer register value of last accumulation.
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 */
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static systime_t _synctime;
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102
#if (AMIROOS_CFG_SHELL_ENABLE == true) || defined(__DOXYGEN__)
103

    
104
/**
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 * @brief   Shell thread working area.
106
 */
107
THD_WORKING_AREA(_shell_wa, AMIROOS_CFG_SHELL_STACKSIZE);
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109
/**
110
 * @brief   Shell input buffer.
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 */
112
static char _shell_line[AMIROOS_CFG_SHELL_LINEWIDTH];
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114
/**
115
 * @brief   Shell argument buffer.
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 */
117
static char* _shell_arglist[AMIROOS_CFG_SHELL_MAXARGS];
118

    
119
/**
120
 * @brief   Shell command to retrieve system information.
121
 */
122
static AOS_SHELL_COMMAND(_shellcmd_info, "module:info", _shellcmd_infocb);
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124
/**
125
 * @brief   Shell command to set or retrieve system configuration.
126
 */
127
static AOS_SHELL_COMMAND(_shellcmd_config, "module:config", _shellcmd_configcb);
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129
/**
130
 * @brief   Shell command to shutdown the system.
131
 */
132
#if (AMIROOS_CFG_SSSP_ENABLE == true) || defined(__DOXYGEN__)
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static AOS_SHELL_COMMAND(_shellcmd_shutdown, "system:shutdown", _shellcmd_shutdowncb);
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#else /* (AMIROOS_CFG_SSSP_ENABLE == true) */
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static AOS_SHELL_COMMAND(_shellcmd_shutdown, "module:shutdown", _shellcmd_shutdowncb);
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#endif /* (AMIROOS_CFG_SSSP_ENABLE == true) */
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138
#if (AMIROOS_CFG_TESTS_ENABLE == true) || defined(__DOXYGEN__)
139

    
140
/**
141
 * @brief   Shell kommand to run a test of the ChibiOS/RT kernel.
142
 */
143
static AOS_SHELL_COMMAND(_shellcmd_kerneltest, "kernel:test", _shellcmd_kerneltestcb);
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145
#endif /* (AMIROOS_CFG_TESTS_ENABLE == true) */
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#endif /* (AMIROOS_CFG_SHELL_ENABLE == true) */
147

    
148
/******************************************************************************/
149
/* LOCAL FUNCTIONS                                                            */
150
/******************************************************************************/
151

    
152
/**
153
 * @brief   Print a separator line.
154
 *
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 * @param[in] stream    Stream to print to or NULL to print to all system streams.
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 * @param[in] c         Character to use.
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 * @param[in] n         Length of the separator line.
158
 *
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 * @return  Number of characters printed.
160
 */
161
static unsigned int _printSystemInfoSeparator(BaseSequentialStream* stream, const char c, const unsigned int n)
162
{
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  aosDbgCheck(stream != NULL);
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  // print the specified character n times
166
  for (unsigned int i = 0; i < n; ++i) {
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    streamPut(stream, (uint8_t)c);
168
  }
169
  streamPut(stream, '\n');
170

    
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  return n+1;
172
}
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174
/**
175
 * @brief   Print a system information line.
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 * @details Prints a system information line with the following format:
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 *            "<name>[spaces]fmt"
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 *          The combined width of "<name>[spaces]" can be specified in order to align <fmt> on multiple lines.
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 *          Note that there is not trailing newline added implicitely.
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 *
181
 * @param[in] stream      Stream to print to or NULL to print to all system streams.
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 * @param[in] name        Name of the entry/line.
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 * @param[in] namewidth   Minimum width of the name column.
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 * @param[in] fmt         Formatted string of information content.
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 *
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 * @return  Number of characters printed.
187
 */
188
static unsigned int _printSystemInfoLine(BaseSequentialStream* stream, const char* name, const unsigned int namewidth, const char* fmt, ...)
189
{
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  aosDbgCheck(stream != NULL);
191
  aosDbgCheck(name != NULL);
192

    
193
  unsigned int n = 0;
194
  va_list ap;
195

    
196
  va_start(ap, fmt);
197
  n += (unsigned int)chprintf(stream, name);
198
  // print at least a single space character
199
  do {
200
    streamPut(stream, ' ');
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    ++n;
202
  } while (n < namewidth);
203
  n += (unsigned int)chvprintf(stream, fmt, ap);
204
  va_end(ap);
205

    
206
  streamPut(stream, '\n');
207
  ++n;
208

    
209
  return n;
210
}
211

    
212
/**
213
 * @brief   Prints information about the system.
214
 *
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 * @param[in] stream    Stream to print to.
216
 */
217
static void _printSystemInfo(BaseSequentialStream* stream)
218
{
219
  aosDbgCheck(stream != NULL);
220

    
221
  // local variables
222
#if (HAL_USE_RTC == TRUE)
223
  struct tm dt;
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  aosSysGetDateTime(&dt);
225
#endif /* (HAL_USE_RTC == TRUE) */
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  // print static information about module and operating system
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  _printSystemInfoSeparator(stream, '=', SYSTEM_INFO_WIDTH);
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  _printSystemInfoLine(stream, "Module", SYSTEM_INFO_NAMEWIDTH, "%s", BOARD_NAME);
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#if defined(PLATFORM_NAME)
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  _printSystemInfoLine(stream, "Platform", SYSTEM_INFO_NAMEWIDTH, "%s", PLATFORM_NAME);
232
#endif /* defined(PLATFORM_NAME) */
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#if defined(PORT_CORE_VARIANT_NAME)
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  _printSystemInfoLine(stream, "Core Variant", SYSTEM_INFO_NAMEWIDTH, "%s", PORT_CORE_VARIANT_NAME);
235
#endif /* defined(PORT_CORE_VARIANT_NAME) */
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  _printSystemInfoLine(stream, "Architecture", SYSTEM_INFO_NAMEWIDTH, "%s", PORT_ARCHITECTURE_NAME);
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  _printSystemInfoSeparator(stream, '-', SYSTEM_INFO_WIDTH);
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#if (AMIROOS_CFG_SSSP_ENABLE == true)
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  _printSystemInfoLine(stream, "AMiRo-OS" , SYSTEM_INFO_NAMEWIDTH, "%u.%u.%u %s (SSSP %u.%u)", AMIROOS_VERSION_MAJOR, AMIROOS_VERSION_MINOR, AMIROOS_VERSION_PATCH, AMIROOS_RELEASE_TYPE, AOS_SSSP_VERSION_MAJOR, AOS_SSSP_VERSION_MINOR);
240
#else /* (AMIROOS_CFG_SSSP_ENABLE == true) */
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  _printSystemInfoLine(stream, "AMiRo-OS" , SYSTEM_INFO_NAMEWIDTH, "%u.%u.%u %s", AMIROOS_VERSION_MAJOR, AMIROOS_VERSION_MINOR, AMIROOS_VERSION_PATCH, AMIROOS_RELEASE_TYPE);
242
#endif /* (AMIROOS_CFG_SSSP_ENABLE == true) */
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  _printSystemInfoLine(stream, "AMiRo-LLD" , SYSTEM_INFO_NAMEWIDTH, "%u.%u.%u %s (periphAL %u.%u)", AMIROLLD_VERSION_MAJOR, AMIROLLD_VERSION_MINOR, AMIROLLD_VERSION_PATCH, AMIROLLD_RELEASE_TYPE, PERIPHAL_VERSION_MAJOR, PERIPHAL_VERSION_MINOR);
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  _printSystemInfoLine(stream, "ChibiOS/RT" , SYSTEM_INFO_NAMEWIDTH, "%u.%u.%u %s", CH_KERNEL_MAJOR, CH_KERNEL_MINOR, CH_KERNEL_PATCH, (CH_KERNEL_STABLE == 1) ? "stable" : "non-stable");
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  _printSystemInfoLine(stream, "ChibiOS/HAL", SYSTEM_INFO_NAMEWIDTH, "%u.%u.%u %s", CH_HAL_MAJOR, CH_HAL_MINOR, CH_HAL_PATCH, (CH_HAL_STABLE == 1) ? "stable" : "non-stable");
246
  _printSystemInfoLine(stream, "build type", SYSTEM_INFO_NAMEWIDTH,"%s", (AMIROOS_CFG_DBG == true) ? "debug" : "release");
247
  _printSystemInfoLine(stream, "Compiler" , SYSTEM_INFO_NAMEWIDTH, "%s %u.%u.%u", "GCC", __GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__); // TODO: support other compilers than GCC
248
  _printSystemInfoLine(stream, "Compiled" , SYSTEM_INFO_NAMEWIDTH, "%s - %s", __DATE__, __TIME__);
249

    
250
  // print static information about the bootloader
251
#if (AMIROOS_CFG_BOOTLOADER != AOS_BOOTLOADER_NONE)
252
  _printSystemInfoSeparator(stream, '-', SYSTEM_INFO_WIDTH);
253
#endif /* (AMIROOS_CFG_BOOTLOADER != AOS_BOOTLOADER_NONE) */
254
#if (AMIROOS_CFG_BOOTLOADER == AOS_BOOTLOADER_AMiRoBLT)
255
  if (BL_CALLBACK_TABLE_ADDRESS->magicNumber == BL_MAGIC_NUMBER) {
256
    _printSystemInfoLine(stream, "AMiRo-BLT", SYSTEM_INFO_NAMEWIDTH, "%u.%u.%u %s (SSSP %u.%u)", BL_CALLBACK_TABLE_ADDRESS->vBootloader.major, BL_CALLBACK_TABLE_ADDRESS->vBootloader.minor, BL_CALLBACK_TABLE_ADDRESS->vBootloader.patch,
257
                         (BL_CALLBACK_TABLE_ADDRESS->vBootloader.identifier == BL_VERSION_ID_AMiRoBLT_Release) ? "stable" :
258
                         (BL_CALLBACK_TABLE_ADDRESS->vBootloader.identifier == BL_VERSION_ID_AMiRoBLT_ReleaseCandidate) ? "release candidate" :
259
                         (BL_CALLBACK_TABLE_ADDRESS->vBootloader.identifier == BL_VERSION_ID_AMiRoBLT_Beta) ? "beta" :
260
                         (BL_CALLBACK_TABLE_ADDRESS->vBootloader.identifier == BL_VERSION_ID_AMiRoBLT_Alpha) ? "alpha" :
261
                         (BL_CALLBACK_TABLE_ADDRESS->vBootloader.identifier == BL_VERSION_ID_AMiRoBLT_PreAlpha) ? "pre-alpha" :
262
                         "<release type unknown>",
263
                         BL_CALLBACK_TABLE_ADDRESS->vSSSP.major, BL_CALLBACK_TABLE_ADDRESS->vSSSP.minor);
264
#if (AMIROOS_CFG_SSSP_ENABLE == true)
265
    if (BL_CALLBACK_TABLE_ADDRESS->vSSSP.major != AOS_SSSP_VERSION_MAJOR) {
266
      const char* msg = "WARNING: AMiRo-BLT and AMiRo-OS implement incompatible SSSP versions!\n";
267
      stream ? chprintf(stream, msg) : aosprintf(msg);
268
    }
269
#endif /* (AMIROOS_CFG_SSSP_ENABLE == true) */
270
    _printSystemInfoLine(stream, "Compiler", SYSTEM_INFO_NAMEWIDTH, "%s %u.%u.%u", (BL_CALLBACK_TABLE_ADDRESS->vCompiler.identifier == BL_VERSION_ID_GCC) ? "GCC" : "<compiler unknown>", BL_CALLBACK_TABLE_ADDRESS->vCompiler.major, BL_CALLBACK_TABLE_ADDRESS->vCompiler.minor, BL_CALLBACK_TABLE_ADDRESS->vCompiler.patch); // TODO: support other compilers than GCC
271
  } else {
272
    const char* msg = "WARNING: AMiRo-BLT incompatible or not available.\n";
273
    stream ? chprintf(stream, "%s", msg) : aosprintf("%s", msg);
274
  }
275
#endif /* (AMIROOS_CFG_BOOTLOADER == X) */
276

    
277
#if defined(AMIROOS_CFG_SYSINFO_HOOK)
278
  // print module specific information
279
  _printSystemInfoSeparator(stream, '-', SYSTEM_INFO_WIDTH);
280
  AMIROOS_CFG_SYSINFO_HOOK();
281
#endif /* defined(AMIROOS_CFG_SYSINFO_HOOK) */
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283
  // print dynamic information about the module
284
  _printSystemInfoSeparator(stream, '-', SYSTEM_INFO_WIDTH);
285
#if (AMIROOS_CFG_SSSP_ENABLE == true)
286
  if (aos.sssp.moduleId != 0) {
287
    _printSystemInfoLine(stream, "Module ID", SYSTEM_INFO_NAMEWIDTH, "%u", aos.sssp.moduleId);
288
  } else {
289
    _printSystemInfoLine(stream, "Module ID", SYSTEM_INFO_NAMEWIDTH, "not available");
290
  }
291
#endif /* (AMIROOS_CFG_SSSP_ENABLE == true) */
292
#if (HAL_USE_RTC == TRUE)
293
  _printSystemInfoLine(stream, "Date", SYSTEM_INFO_NAMEWIDTH, "%04u-%02u-%02u (%s)",
294
                       dt.tm_year + 1900,
295
                       dt.tm_mon + 1,
296
                       dt.tm_mday,
297
                       (dt.tm_wday == 0) ? "Sunday" : (dt.tm_wday == 1) ? "Monday" : (dt.tm_wday == 2) ? "Tuesday" : (dt.tm_wday == 3) ? "Wednesday" : (dt.tm_wday == 4) ? "Thursday" : (dt.tm_wday == 5) ? "Friday" : "Saturday");
298
  _printSystemInfoLine(stream, "Time", SYSTEM_INFO_NAMEWIDTH, "%02u:%02u:%02u", dt.tm_hour, dt.tm_min, dt.tm_sec);
299
#endif /* (HAL_USE_RTC == TRUE) */
300

    
301
  _printSystemInfoSeparator(stream, '=', SYSTEM_INFO_WIDTH);
302

    
303
  return;
304
}
305

    
306
#if (AMIROOS_CFG_SHELL_ENABLE == true) || defined(__DOXYGEN__)
307
/**
308
 * @brief   Callback function for the system:config shell command.
309
 *
310
 * @param[in] stream    The I/O stream to use.
311
 * @param[in] argc      Number of arguments.
312
 * @param[in] argv      List of pointers to the arguments.
313
 *
314
 * @return              An exit status.
315
 * @retval  AOS_OK                  The command was executed successfuly.
316
 * @retval  AOS_INVALIDARGUMENTS    There was an issue with the arguemnts.
317
 */
318
static int _shellcmd_configcb(BaseSequentialStream* stream, int argc, char* argv[])
319
{
320
  aosDbgCheck(stream != NULL);
321

    
322
  // local variables
323
  int retval = AOS_INVALIDARGUMENTS;
324

    
325
  // if there are additional arguments
326
  if (argc > 1) {
327
    // if the user wants to set or retrieve the shell configuration
328
    if (strcmp(argv[1], "--shell") == 0) {
329
      // if the user wants to modify the shell configuration
330
      if (argc > 2) {
331
        // if the user wants to modify the prompt
332
        if (strcmp(argv[2], "prompt") == 0) {
333
          // there must be a further argument
334
          if (argc > 3) {
335
            // handle the option
336
            if (strcmp(argv[3], "text") == 0) {
337
              aos.shell.config &= ~AOS_SHELL_CONFIG_PROMPT_MINIMAL;
338
              retval = AOS_OK;
339
            }
340
            else if (strcmp(argv[3], "minimal") == 0) {
341
              aos.shell.config |= AOS_SHELL_CONFIG_PROMPT_MINIMAL;
342
              retval = AOS_OK;
343
            }
344
            else if (strcmp(argv[3], "notime") == 0) {
345
              aos.shell.config &= ~(AOS_SHELL_CONFIG_PROMPT_UPTIME | AOS_SHELL_CONFIG_PROMPT_DATETIME);
346
              retval = AOS_OK;
347
            }
348
            else if (strcmp(argv[3], "uptime") == 0) {
349
              aos.shell.config &= ~AOS_SHELL_CONFIG_PROMPT_DATETIME;
350
              aos.shell.config |= AOS_SHELL_CONFIG_PROMPT_UPTIME;
351
              retval = AOS_OK;
352
            }
353
            else if (strcmp(argv[3], "date&time") == 0) {
354
              aos.shell.config &= ~AOS_SHELL_CONFIG_PROMPT_UPTIME;
355
              aos.shell.config |= AOS_SHELL_CONFIG_PROMPT_DATETIME;
356
              retval = AOS_OK;
357
            }
358
            else {
359
              chprintf(stream, "unknown option '%s'\n", argv[3]);
360
              return AOS_INVALIDARGUMENTS;
361
            }
362
          }
363
        }
364
        // if the user wants to modify the string matching
365
        else if (strcmp(argv[2], "match") == 0) {
366
          // there must be a further argument
367
          if (argc > 3) {
368
            if (strcmp(argv[3], "casesensitive") == 0) {
369
              aos.shell.config |= AOS_SHELL_CONFIG_MATCH_CASE;
370
              retval = AOS_OK;
371
            }
372
            else if (strcmp(argv[3], "caseinsensitive") == 0) {
373
              aos.shell.config &= ~AOS_SHELL_CONFIG_MATCH_CASE;
374
              retval = AOS_OK;
375
            }
376
          }
377
        }
378
      }
379
      // if the user wants to retrieve the shell configuration
380
      else {
381
        chprintf(stream, "current shell configuration:\n");
382
        chprintf(stream, "  prompt text:   %s\n",
383
                 (aos.shell.prompt != NULL) ? aos.shell.prompt : "n/a");
384
        char time[10];
385
        switch (aos.shell.config & (AOS_SHELL_CONFIG_PROMPT_UPTIME | AOS_SHELL_CONFIG_PROMPT_DATETIME)) {
386
          case AOS_SHELL_CONFIG_PROMPT_UPTIME:
387
            strcpy(time, "uptime"); break;
388
          case AOS_SHELL_CONFIG_PROMPT_DATETIME:
389
            strcpy(time, "date&time"); break;
390
          default:
391
            strcpy(time, "no time"); break;
392
        }
393
        chprintf(stream, "  prompt style:  %s, %s\n",
394
                 (aos.shell.config & AOS_SHELL_CONFIG_PROMPT_MINIMAL) ? "minimal" : "text",
395
                 time);
396
        chprintf(stream, "  input method:  %s\n",
397
                 (aos.shell.config & AOS_SHELL_CONFIG_INPUT_OVERWRITE) ? "replace" : "insert");
398
        chprintf(stream, "  text matching: %s\n",
399
                 (aos.shell.config & AOS_SHELL_CONFIG_MATCH_CASE) ? "case sensitive" : "case insensitive");
400
        retval = AOS_OK;
401
      }
402
    }
403
# if (HAL_USE_RTC == TRUE)
404
    // if the user wants to configure the date or time
405
    else if (strcmp(argv[1], "--date&time") == 0 && argc == 4) {
406
      struct tm dt;
407
      aosSysGetDateTime(&dt);
408
      int val = atoi(argv[3]);
409
      if (strcmp(argv[2], "year") == 0 && val >= 1900) {
410
        dt.tm_year = val - 1900;
411
      }
412
      else if (strcmp(argv[2], "month") == 0 && val > 0 && val <= 12) {
413
        dt.tm_mon = val - 1;
414
      }
415
      else if (strcmp(argv[2], "day") == 0 && val > 0 && val <= 31) {
416
        dt.tm_mday = val;
417
      }
418
      else if (strcmp(argv[2], "hour") == 0 && val >= 0 && val < 24) {
419
        dt.tm_hour = val;
420
      }
421
      else if (strcmp(argv[2], "minute") == 0 && val >= 0 && val < 60) {
422
        dt.tm_min = val;
423
      }
424
      else if (strcmp(argv[2], "second") == 0 && val >= 0 && val < 60) {
425
        dt.tm_sec = val;
426
      }
427
      else {
428
        chprintf(stream, "unknown option '%s' or invalid value '%s'\n", argv[2], argv[3]);
429
        return AOS_INVALIDARGUMENTS;
430
      }
431
      dt.tm_wday = aosTimeDayOfWeekFromDate((uint16_t)dt.tm_mday, (uint8_t)dt.tm_mon+1, (uint16_t)dt.tm_year+1900) % DAYS_PER_WEEK;
432
      aosSysSetDateTime(&dt);
433

    
434
      // read and print new date and time
435
      aosSysGetDateTime(&dt);
436
      chprintf(stream, "date/time set to %04u-%02u-%02u %02u:%02u:%02u\n",
437
               dt.tm_year+1900, dt.tm_mon+1, dt.tm_mday,
438
               dt.tm_hour, dt.tm_min, dt.tm_sec);
439

    
440
      retval = AOS_OK;
441
    }
442
#endif /* (HAL_USE_RTC == TRUE) */
443
  }
444

    
445
  // print help, if required
446
  if (retval == AOS_INVALIDARGUMENTS) {
447
    chprintf(stream, "Usage: %s OPTION\n", argv[0]);
448
    chprintf(stream, "Options:\n");
449
    chprintf(stream, "  --help\n");
450
    chprintf(stream, "    Print this help text.\n");
451
    chprintf(stream, "  --shell [OPT [VAL]]\n");
452
    chprintf(stream, "    Set or retrieve shell configuration.\n");
453
    chprintf(stream, "    Possible OPTs and VALs are:\n");
454
    chprintf(stream, "      prompt text|minimal|uptime|date&time|notime\n");
455
    chprintf(stream, "        Configures the prompt.\n");
456
    chprintf(stream, "      match casesensitive|caseinsenitive\n");
457
    chprintf(stream, "        Configures string matching.\n");
458
#if (HAL_USE_RTC == TRUE)
459
    chprintf(stream, "  --date&time OPT VAL\n");
460
    chprintf(stream, "    Set the date/time value of OPT to VAL.\n");
461
    chprintf(stream, "    Possible OPTs are:\n");
462
    chprintf(stream, "      year\n");
463
    chprintf(stream, "      month\n");
464
    chprintf(stream, "      day\n");
465
    chprintf(stream, "      hour\n");
466
    chprintf(stream, "      minute\n");
467
    chprintf(stream, "      second\n");
468
#endif /* (HAL_USE_RTC == TRUE) */
469
  }
470

    
471
  return (argc > 1 && strcmp(argv[1], "--help") == 0) ? AOS_OK : retval;
472
}
473

    
474
/**
475
 * @brief   Callback function for the system:info shell command.
476
 *
477
 * @param[in] stream    The I/O stream to use.
478
 * @param[in] argc      Number of arguments.
479
 * @param[in] argv      List of pointers to the arguments.
480
 *
481
 * @return            An exit status.
482
 * @retval  AOS_OK    The command was executed successfully.
483
 */
484
static int _shellcmd_infocb(BaseSequentialStream* stream, int argc, char* argv[])
485
{
486
  aosDbgCheck(stream != NULL);
487

    
488
  (void)argc;
489
  (void)argv;
490

    
491
  // print system information
492
  _printSystemInfo(stream);
493

    
494
  // print time measurement precision
495
  chprintf(stream, "module time resolution: %uus\n", AOS_SYSTEM_TIME_RESOLUTION);
496

    
497
  // print system uptime
498
  aos_timestamp_t uptime;
499
  aosSysGetUptime(&uptime);
500
  chprintf(stream, "The system is running for\n");
501
  chprintf(stream, "%10u days\n", (uint32_t)(uptime / MICROSECONDS_PER_DAY));
502
  chprintf(stream, "%10u hours\n", (uint8_t)(uptime % MICROSECONDS_PER_DAY / MICROSECONDS_PER_HOUR));
503
  chprintf(stream, "%10u minutes\n", (uint8_t)(uptime % MICROSECONDS_PER_HOUR / MICROSECONDS_PER_MINUTE));
504
  chprintf(stream, "%10u seconds\n", (uint8_t)(uptime % MICROSECONDS_PER_MINUTE / MICROSECONDS_PER_SECOND));
505
  chprintf(stream, "%10u milliseconds\n", (uint16_t)(uptime % MICROSECONDS_PER_SECOND / MICROSECONDS_PER_MILLISECOND));
506
  chprintf(stream, "%10u microseconds\n", (uint16_t)(uptime % MICROSECONDS_PER_MILLISECOND / MICROSECONDS_PER_MICROSECOND));
507
#if (AMIROOS_CFG_SSSP_ENABLE == true) && (AMIROOS_CFG_SSSP_MASTER != true) && (AMIROOS_CFG_PROFILE == true)
508
  chprintf(stream, "SSSP synchronization offset: %.3fus per %uus\n", (double)aosSsspGetSyncSkew(), AMIROOS_CFG_SSSP_SYSSYNCPERIOD);
509
#endif /* (AMIROOS_CFG_SSSP_ENABLE == true) && (AMIROOS_CFG_SSSP_MASTER != true) && (AMIROOS_CFG_PROFILE == true) */
510
  _printSystemInfoSeparator(stream, '=', SYSTEM_INFO_WIDTH);
511

    
512
  // print shell info
513
  chprintf(stream, "System shell information:\n");
514
  chprintf(stream, "\tcommands available:     %u\n", aosShellCountCommands(&aos.shell));
515
  chprintf(stream, "\tline width:             %u characters\n", aos.shell.input.width);
516
  chprintf(stream, "\tmaximum arguments:      %u\n", aos.shell.arglistsize);
517
#if (AMIROOS_CFG_DBG == true)
518
  chprintf(stream, "\tthread stack size:      %u bytes\n", aosThdGetStacksize(aos.shell.thread));
519
#if (CH_DBG_FILL_THREADS == TRUE)
520
  chprintf(stream, "\tstack peak utilization: %u bytes (%.2f%%)\n", aosThdGetStackPeakUtilization(aos.shell.thread), (double)((float)(aosThdGetStackPeakUtilization(aos.shell.thread)) / (float)(aosThdGetStacksize(aos.shell.thread)) * 100.0f));
521
#endif /* (CH_DBG_FILL_THREADS == TRUE) */
522
#endif /* (AMIROOS_CFG_DBG == true) */
523
  _printSystemInfoSeparator(stream, '=', SYSTEM_INFO_WIDTH);
524

    
525
  return AOS_OK;
526
}
527

    
528
/**
529
 * @brief   Callback function for the sytem:shutdown or module:shutdown shell command.
530
 *
531
 * @param[in] stream    The I/O stream to use.
532
 * @param[in] argc      Number of arguments.
533
 * @param[in] argv      List of pointers to the arguments.
534
 *
535
 * @return              An exit status.
536
 * @retval  AOS_OK                  The command was executed successfully.
537
 * @retval  AOS_INVALIDARGUMENTS   There was an issue with the arguments.
538
 */
539
static int _shellcmd_shutdowncb(BaseSequentialStream* stream, int argc, char* argv[])
540
{
541
  aosDbgCheck(stream != NULL);
542

    
543
#if (AMIROOS_CFG_BOOTLOADER == AOS_BOOTLOADER_NONE)
544

    
545
  (void)argv;
546

    
547
  if (argc != 1) {
548
    // error
549
    chprintf(stream, "ERROR: no arguments allowed.\n");
550
    return AOS_INVALIDARGUMENTS;
551
  } else {
552
    // broadcast shutdown event
553
    chEvtBroadcastFlags(&aos.events.os, AOS_SYSTEM_EVENTFLAGS_SHUTDOWN_MASK);
554
    // set terminate flag so no further prompt will be printed
555
    chThdTerminate(chThdGetSelfX());
556
    return AOS_OK;
557
  }
558

    
559
#elif (AMIROOS_CFG_BOOTLOADER == AOS_BOOTLOADER_AMiRoBLT)
560

    
561
  // print help text
562
  if (argc != 2 || strcmp(argv[1], "--help") == 0) {
563
    chprintf(stream, "Usage: %s OPTION\n", argv[0]);
564
    chprintf(stream, "Options:\n");
565
    chprintf(stream, "  --help\n");
566
    chprintf(stream, "    Print this help text.\n");
567
    chprintf(stream, "  --hibernate, -h\n");
568
    chprintf(stream, "    Shutdown to hibernate mode.\n");
569
    chprintf(stream, "    Least energy saving, but allows charging via pins.\n");
570
    chprintf(stream, "  --deepsleep, -d\n");
571
    chprintf(stream, "    Shutdown to deepsleep mode.\n");
572
    chprintf(stream, "    Minimum energy consumption while allowing charging via plug.\n");
573
    chprintf(stream, "  --transportation, -t\n");
574
    chprintf(stream, "    Shutdown to transportation mode.\n");
575
    chprintf(stream, "    Minimum energy consumption with all interrupts disabled (no charging).\n");
576
    chprintf(stream, "  --restart, -r\n");
577
    chprintf(stream, "    Shutdown and restart system.\n");
578

    
579
    return (argc != 2) ? AOS_INVALIDARGUMENTS : AOS_OK;
580
  }
581
  // handle argument
582
  else {
583
    if (strcmp(argv[1], "-h") == 0 || strcmp(argv[1], "--hibernate") == 0) {
584
      // broadcast shutdown event
585
      chEvtBroadcastFlags(&aos.events.os, AOS_SYSTEM_EVENTFLAGS_SHUTDOWN_HIBERNATE);
586
      // set terminate flag so no further prompt will be printed
587
      chThdTerminate(chThdGetSelfX());
588
      return AOS_OK;
589
    }
590
    else if (strcmp(argv[1], "-d") == 0 || strcmp(argv[1], "--deepsleep") == 0) {
591
      // broadcast shutdown event
592
      chEvtBroadcastFlags(&aos.events.os, AOS_SYSTEM_EVENTFLAGS_SHUTDOWN_DEEPSLEEP);
593
      // set terminate flag so no further prompt will be printed
594
      chThdTerminate(chThdGetSelfX());
595
      return AOS_OK;
596
    }
597
    else if (strcmp(argv[1], "-t") == 0 || strcmp(argv[1], "--transportation") == 0) {
598
      // broadcast shutdown event
599
      chEvtBroadcastFlags(&aos.events.os, AOS_SYSTEM_EVENTFLAGS_SHUTDOWN_TRANSPORTATION);
600
      // set terminate flag so no further prompt will be printed
601
      chThdTerminate(chThdGetSelfX());
602
      return AOS_OK;
603
    }
604
    else if (strcmp(argv[1], "-r") == 0 || strcmp(argv[1], "--restart") == 0) {
605
      // broadcast shutdown event
606
      chEvtBroadcastFlags(&aos.events.os, AOS_SYSTEM_EVENTFLAGS_SHUTDOWN_RESTART);
607
      // set terminate flag so no further prompt will be printed
608
      chThdTerminate(chThdGetSelfX());
609
      return AOS_OK;
610
    }
611
    else {
612
      chprintf(stream, "unknown argument %s\n", argv[1]);
613
      return AOS_INVALIDARGUMENTS;
614
    }
615
  }
616

    
617
#endif /* (AMIROOS_CFG_BOOTLOADER == X) */
618
}
619

    
620
#if (AMIROOS_CFG_TESTS_ENABLE == true) || defined(__DOXYGEN__)
621

    
622
/**
623
 * @brief   Callback function for the kernel:test shell command.
624
 *
625
 * @param[in] stream    The I/O stream to use.
626
 * @param[in] argc      Number of arguments.
627
 * @param[in] argv      List of pointers to the arguments.
628
 *
629
 * @return      An exit status.
630
 */
631
static int _shellcmd_kerneltestcb(BaseSequentialStream* stream, int argc, char* argv[])
632
{
633
  aosDbgCheck(stream != NULL);
634

    
635
  (void)argc;
636
  (void)argv;
637

    
638
  msg_t retval = test_execute(stream, &rt_test_suite);
639

    
640
  return retval;
641
}
642

    
643
#endif /* (AMIROOS_CFG_TESTS_ENABLE == true) */
644
#endif /* (AMIROOS_CFG_SHELL_ENABLE == true) */
645

    
646
// suppress warning in case no interrupt GPIOs are defined
647
#pragma GCC diagnostic push
648
#pragma GCC diagnostic ignored "-Wunused-function"
649
/**
650
 * @brief   Generic callback function for GPIO interrupts.
651
 *
652
 * @param[in] args   Pointer to the GPIO line identifier.
653
 */
654
static void _gpioCallback(void* args)
655
{
656
  aosDbgCheck((args != NULL) && (*((ioline_t*)args) != PAL_NOLINE) && (PAL_PAD(*((ioline_t*)args)) < sizeof(eventflags_t) * 8));
657

    
658
  chSysLockFromISR();
659
  chEvtBroadcastFlagsI(&aos.events.gpio, AOS_GPIOEVENT_FLAG(PAL_PAD(*((ioline_t*)args))));
660
  chSysUnlockFromISR();
661

    
662
  return;
663
}
664
#pragma GCC diagnostic pop
665

    
666
/**
667
 * @brief   Callback function for the uptime accumulation timer.
668
 *
669
 * @param[in] par   Generic parameter.
670
 */
671
static void _uptimeCallback(void* par)
672
{
673
  (void)par;
674

    
675
  chSysLockFromISR();
676
  // read current time in system ticks
677
  register const systime_t st = chVTGetSystemTimeX();
678
  // update the uptime variables
679
  _uptime += chTimeI2US(chTimeDiffX(_synctime, st));
680
  _synctime = st;
681
  // enable the timer again
682
  chVTSetI(&_systimer, SYSTIMER_PERIOD, &_uptimeCallback, NULL);
683
  chSysUnlockFromISR();
684

    
685
  return;
686
}
687

    
688
/**
689
 * @brief   Retreive the number of active threads.
690
 *
691
 * @return  Number of active threads.
692
 */
693
size_t _numActiveThreads(void)
694
{
695
  size_t threads = 0;
696
  thread_t* tp = chRegFirstThread();
697
  while (tp) {
698
    threads += (tp->state == CH_STATE_FINAL) ? 1 : 0;
699
    tp = chRegNextThread(tp);
700
  }
701

    
702
  return threads;
703
}
704

    
705
/******************************************************************************/
706
/* EXPORTED FUNCTIONS                                                         */
707
/******************************************************************************/
708

    
709
/**
710
 * @brief   AMiRo-OS system initialization.
711
 * @note    Must be called from the system control thread (usually main thread).
712
 *
713
 * @param[in] shellPrompt   String to be printed as prompt of the system shell.
714
 */
715
void aosSysInit(const char* shellPrompt)
716
{
717
  /* set control thread to maximum priority */
718
  chThdSetPriority(AOS_THD_CTRLPRIO);
719

    
720
#if (AMIROOS_CFG_SSSP_ENABLE == true)
721
  aosSsspInit(&_uptime);
722
#endif /* (AMIROOS_CFG_SSSP_ENABLE == true) */
723

    
724
  /* set local variables */
725
  chVTObjectInit(&_systimer);
726
#if (AMIROOS_CFG_SSSP_ENABLE == true)
727
  // uptime counter is started when SSSP proceeds to operation phase
728
  _synctime = 0;
729
  _uptime = 0;
730
#else /* (AMIROOS_CFG_SSSP_ENABLE == true) */
731
  // start the uptime counter
732
  chSysLock();
733
  aosSysStartUptimeS();
734
  chSysUnlock();
735
#endif /* (AMIROOS_CFG_SSSP_ENABLE == true) */
736

    
737
  /* initialize aos configuration */
738
  aosIOStreamInit(&aos.iostream);
739
  chEvtObjectInit(&aos.events.gpio);
740
  chEvtObjectInit(&aos.events.os);
741

    
742
#if (AMIROOS_CFG_SHELL_ENABLE == true)
743

    
744
  /* init shell */
745
  aosShellInit(&aos.shell,
746
               &aos.events.os,
747
               shellPrompt,
748
               _shell_line,
749
               AMIROOS_CFG_SHELL_LINEWIDTH,
750
               _shell_arglist,
751
               AMIROOS_CFG_SHELL_MAXARGS);
752
  // add system commands
753
  aosShellAddCommand(&aos.shell, &_shellcmd_config);
754
  aosShellAddCommand(&aos.shell, &_shellcmd_info);
755
  aosShellAddCommand(&aos.shell, &_shellcmd_shutdown);
756
#if (AMIROOS_CFG_TESTS_ENABLE == true)
757
  aosShellAddCommand(&aos.shell, &_shellcmd_kerneltest);
758
#endif /* (AMIROOS_CFG_TESTS_ENABLE == true) */
759

    
760
#else /* (AMIROOS_CFG_SHELL_ENABLE == true) */
761

    
762
  // suppress unused variable warnings
763
  (void)shellPrompt;
764

    
765
#endif /* (AMIROOS_CFG_SHELL_ENABLE == true) */
766

    
767
  return;
768
}
769

    
770
/**
771
 * @brief   Starts the system and all system threads.
772
 */
773
void aosSysStart(void)
774
{
775
  // print system information;
776
  _printSystemInfo((BaseSequentialStream*)&aos.iostream);
777
  aosprintf("\n");
778

    
779
#if (AMIROOS_CFG_SHELL_ENABLE == true)
780
  // start system shell thread
781
#if (CH_CFG_USE_THREADHIERARCHY == TRUE)
782
  aos.shell.thread = chThdCreateStatic(_shell_wa, sizeof(_shell_wa), AMIROOS_CFG_SHELL_THREADPRIO, aosShellThread, &aos.shell, &ch.mainthread);
783
#else /* (CH_CFG_USE_THREADHIERARCHY == TRUE) */
784
  aos.shell.thread = chThdCreateStatic(_shell_wa, sizeof(_shell_wa), AMIROOS_CFG_SHELL_THREADPRIO, aosShellThread, &aos.shell);
785
#endif /* (CH_CFG_USE_THREADHIERARCHY == TRUE) */
786
#endif /* (AMIROOS_CFG_SHELL_ENABLE == true) */
787

    
788
  return;
789
}
790

    
791
/**
792
 * @brief   Start the system uptime measurement.
793
 * @note    Must be called from a locked context.
794
 */
795
void aosSysStartUptimeS(void)
796
{
797
  chDbgCheckClassS();
798

    
799
  // start the uptime aggregation counter
800
  _synctime = chVTGetSystemTimeX();
801
  _uptime = 0;
802
  chVTSetI(&_systimer, SYSTIMER_PERIOD, &_uptimeCallback, NULL);
803

    
804
  return;
805
}
806

    
807
/**
808
 * @brief   Retrieves the system uptime.
809
 *
810
 * @param[out] ut   The system uptime.
811
 */
812
void aosSysGetUptimeX(aos_timestamp_t* ut)
813
{
814
  aosDbgCheck(ut != NULL);
815

    
816
  *ut = _uptime + chTimeI2US(chTimeDiffX(_synctime, chVTGetSystemTimeX()));
817

    
818
  return;
819
}
820

    
821
#if (HAL_USE_RTC == TRUE) || defined(__DOXYGEN__)
822

    
823
/**
824
 * @brief   retrieves the date and time from the MCU clock.
825
 *
826
 * @param[out] td   The date and time.
827
 */
828
void aosSysGetDateTime(struct tm* dt)
829
{
830
  aosDbgCheck(dt != NULL);
831

    
832
  RTCDateTime rtc;
833
  rtcGetTime(&MODULE_HAL_RTC, &rtc);
834
  rtcConvertDateTimeToStructTm(&rtc, dt, NULL);
835

    
836
  return;
837
}
838

    
839
/**
840
 * @brief   set the date and time of the MCU clock.
841
 *
842
 * @param[in] dt    The date and time to set.
843
 */
844
void aosSysSetDateTime(struct tm* dt)
845
{
846
  aosDbgCheck(dt != NULL);
847

    
848
  RTCDateTime rtc;
849
  rtcConvertStructTmToDateTime(dt, 0, &rtc);
850
  rtcSetTime(&MODULE_HAL_RTC, &rtc);
851

    
852
  return;
853
}
854

    
855
#endif /* (HAL_USE_RTC == TRUE) */
856

    
857
/**
858
 * @brief   Initializes/Acknowledges a system shutdown/restart request.
859
 * @note    This functions should be called from the thread with highest priority.
860
 *
861
 * @param[in] shutdown    Type of shutdown.
862
 */
863
void aosSysShutdownInit(aos_shutdown_t shutdown)
864
{
865
  // check arguments
866
  aosDbgCheck(shutdown != AOS_SHUTDOWN_NONE);
867

    
868
#if (AMIROOS_CFG_SSSP_ENABLE == true)
869

    
870
  // activate the PD signal only if this module initiated the shutdown
871
  if (shutdown != AOS_SHUTDOWN_PASSIVE) {
872
    aosSsspShutdownInit(true);
873
  }
874

    
875
  switch (shutdown) {
876
    case AOS_SHUTDOWN_PASSIVE:
877
      chEvtBroadcastFlags(&aos.events.os, AOS_SYSTEM_EVENTFLAGS_SHUTDOWN_PASSIVE);
878
      aosprintf("shutdown request received...\n");
879
      break;
880
#if (AMIROOS_CFG_BOOTLOADER == AOS_BOOTLOADER_NONE)
881
    case AOS_SHUTDOWN_ACTIVE:
882
      aosprintf("shutdown initiated...\n");
883
      break;
884
#elif (AMIROOS_CFG_BOOTLOADER == AOS_BOOTLOADER_AMiRoBLT)
885
    case AOS_SHUTDOWN_HIBERNATE:
886
      aosprintf("shutdown to hibernate mode...\n");
887
      break;
888
    case AOS_SHUTDOWN_DEEPSLEEP:
889
      aosprintf("shutdown to deepsleep mode...\n");
890
      break;
891
    case AOS_SHUTDOWN_TRANSPORTATION:
892
      aosprintf("shutdown to transportation mode...\n");
893
      break;
894
    case AOS_SHUTDOWN_RESTART:
895
      aosprintf("restarting system...\n");
896
      break;
897
#endif /* (AMIROOS_CFG_BOOTLOADER == X) */
898
    case AOS_SHUTDOWN_NONE:
899
      // must never occur
900
      aosDbgAssert(false);
901
      break;
902
  }
903

    
904
#else /* (AMIROOS_CFG_SSSP_ENABLE == true) */
905

    
906
  aosprintf("shutdown initiated...\n");
907

    
908
#endif /* (AMIROOS_CFG_SSSP_ENABLE == true) */
909

    
910
  return;
911
}
912

    
913
/**
914
 * @brief   Stops the system and all related threads (not the thread this function is called from).
915
 */
916
void aosSysStop(void)
917
{
918
  // wait until the calling thread is the only remaining active thread
919
#if (CH_CFG_NO_IDLE_THREAD == TRUE)
920
  while (_numActiveThreads() > 1) {
921
#else /* (CH_CFG_NO_IDLE_THREAD == TRUE) */
922
  while (_numActiveThreads() > 2) {
923
#endif /* (CH_CFG_NO_IDLE_THREAD == TRUE) */
924
    aosDbgPrintf("waiting for all threads to terminate...\n");
925
    chThdYield();
926
  }
927

    
928
  return;
929
}
930

    
931
/**
932
 * @brief   Deinitialize all system variables.
933
 */
934
void aosSysDeinit(void)
935
{
936
  return;
937
}
938

    
939
#if ((AMIROOS_CFG_SSSP_ENABLE == true) && (AMIROOS_CFG_SSSP_SHUTDOWN != true)) ||                 \
940
    ((AMIROOS_CFG_SSSP_ENABLE != true) && (AMIROOS_CFG_BOOTLOADER == AOS_BOOTLOADER_AMiRoBLT)) || \
941
    defined(__DOXYGEN__)
942

    
943
/**
944
 * @brief   Finally shuts down the system and calls the bootloader callback function.
945
 * @note    This function should be called from the thtead with highest priority.
946
 *
947
 * @param[in] shutdown    Type of shutdown.
948
 */
949
void aosSysShutdownToBootloader(aos_shutdown_t shutdown)
950
{
951
  // check arguments
952
  aosDbgCheck(shutdown != AOS_SHUTDOWN_NONE);
953

    
954
  // disable all interrupts
955
  irqDeinit();
956

    
957
#if (AMIROOS_CFG_BOOTLOADER == AOS_BOOTLOADER_AMiRoBLT)
958
  // validate AMiRo-BLT
959
  if ((BL_CALLBACK_TABLE_ADDRESS->magicNumber == BL_MAGIC_NUMBER) &&
960
      (BL_CALLBACK_TABLE_ADDRESS->vBootloader.major == BL_VERSION_MAJOR) &&
961
      (BL_CALLBACK_TABLE_ADDRESS->vBootloader.minor >= BL_VERSION_MINOR)) {
962
    // call bootloader callback depending on arguments
963
    switch (shutdown) {
964
#if (AMIROOS_CFG_SSSP_ENABLE == true)
965
      case AOS_SHUTDOWN_PASSIVE:
966
        BL_CALLBACK_TABLE_ADDRESS->cbHandleShutdownRequest();
967
        break;
968
#endif /* (AMIROOS_CFG_SSSP_ENABLE == true) */
969
      case AOS_SHUTDOWN_HIBERNATE:
970
        BL_CALLBACK_TABLE_ADDRESS->cbShutdownHibernate();
971
        break;
972
      case AOS_SHUTDOWN_DEEPSLEEP:
973
        BL_CALLBACK_TABLE_ADDRESS->cbShutdownDeepsleep();
974
        break;
975
      case AOS_SHUTDOWN_TRANSPORTATION:
976
        BL_CALLBACK_TABLE_ADDRESS->cbShutdownTransportation();
977
        break;
978
      case AOS_SHUTDOWN_RESTART:
979
        BL_CALLBACK_TABLE_ADDRESS->cbShutdownRestart();
980
        break;
981
      // must never occur
982
      case AOS_SHUTDOWN_NONE:
983
      default:
984
        break;
985
    }
986
  } else {
987
    // fallback if AMiRo-BLT was found to be invalid
988
    aosprintf("ERROR: AMiRo-BLT incompatible or not available!\n");
989
    aosThdMSleep(10);
990
    chSysDisable();
991
  }
992
#endif /* (AMIROOS_CFG_BOOTLOADER == AOS_BOOTLOADER_AMiRoBLT) */
993

    
994
  return;
995
}
996

    
997
#endif /* ((AMIROOS_CFG_SSSP_ENABLE == true) && (AMIROOS_CFG_SSSP_SHUTDOWN != true)) || ((AMIROOS_CFG_SSSP_ENABLE != true) && (AMIROOS_CFG_BOOTLOADER == AOS_BOOTLOADER_AMiRoBLT)) */
998

    
999
/**
1000
 * @brief   Generic callback function for GPIO interrupts.
1001
 *
1002
 * @return  Pointer to the callback function.
1003
 */
1004
palcallback_t aosSysGetStdGpioCallback(void)
1005
{
1006
  return _gpioCallback;
1007
}
1008

    
1009
/** @} */