AMiRo-OS

/*

AMiRo-Apps is a collection of applications for the Autonomous Mini Robot (AMiRo) platform.

Copyright (C) 2018..2020  Thomas Schöpping et al.

This program is free software: you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation, either version 3 of the License, or

(at your option) any later version.

This program is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

GNU General Public License for more details.

You should have received a copy of the GNU General Public License

along with this program.  If not, see <http://www.gnu.org/licenses/>.

*/

#include <urtware.h>

/*============================================================================*/

/* DEPENDENCIES                                                               */

/*============================================================================*/

/*============================================================================*/

/* DEBUG                                                                      */

/*============================================================================*/

/*============================================================================*/

/* MUTEX                                                                      */

/*============================================================================*/

/*============================================================================*/

/* CONDITION VARIABLE                                                         */

/*============================================================================*/

/**

 * @details Due to limitations of ChibiOS, the 'mutex' argument is ignored in

 *          this implementation. Instead, the mutex, which was locked by the

 *          calling thread most recently is used.

 *          In debug builds, however, the argument is still checked to be

 *          identical to implicitely selected mutex.

 */

urt_osCondvarWaitStatus_t urtCondvarWait(urt_osCondvar_t* condvar, urt_osMutex_t* mutex, urt_delay_t timeout)

{

  aosDbgCheck(condvar != NULL);

  aosDbgCheck(mutex != NULL);

  aosDbgCheck(chMtxGetNextMutexX() == mutex); // due to limitation of ChibiOS

  (void)mutex;

  switch (chCondWaitTimeout(condvar, timeout)) {

    case MSG_OK:

      return URT_CONDVAR_WAITSTATUS_SIGNAL;

    case MSG_RESET:

      return URT_CONDVAR_WAITSTATUS_BROADCAST;

    case MSG_TIMEOUT:

      return URT_CONDVAR_WAITSTATUS_TIMEOUT;

    default:

      chSysHalt(__func__);

      return URT_CONDVAR_WAITSTATUS_TIMEOUT;

  }

}

/*============================================================================*/

/* EVENTS                                                                     */

/*============================================================================*/

urt_osEventMask_t urtEventWait(urt_osEventMask_t mask, urt_osEventWait_t type, urt_delay_t timeout)

{

  switch (type) {

    case URT_EVENT_WAIT_ONE:

      return chEvtWaitOneTimeout(mask, timeout);

    case URT_EVENT_WAIT_ANY:

      return chEvtWaitAnyTimeout(mask, timeout);

    case URT_EVENT_WAIT_ALL:

      return chEvtWaitAllTimeout(mask, timeout);

    default:

      return 0;

  }

}

/*============================================================================*/

/* STREAMS                                                                    */

/*============================================================================*/

/*============================================================================*/

/* TIME                                                                       */

/*============================================================================*/

urt_osTime_t urtTimeNow(void)

{

  urt_osTime_t time;

  aosSysGetUptime(&time);

  return time;

}

/*============================================================================*/

/* THREAD                                                                     */

/*============================================================================*/

urt_osThread_t* urtThreadInit(void* memory, size_t size, urt_osThreadPrio_t prio, urt_osThreadFunction_t func, void* arg)

{

  aosDbgCheck(memory != NULL);

  aosDbgCheck(size != 0);

  aosDbgCheck(prio >= URT_THREAD_PRIO_LOW_MIN && prio <= URT_THREAD_PRIO_RT_MAX);

  aosDbgCheck(func != NULL);

  const thread_descriptor_t descriptor = {

    /* name                         */ "",

    /* pointer to working area base */ (stkalign_t*)memory,

    /* end of the working area      */ &((stkalign_t*)memory)[size / sizeof(stkalign_t)],

    /* thread priority              */ prio,

    /* thread function pointer      */ func,

    /* thread argument              */ arg,

    /* pointer to the parent thread */ chThdGetSelfX(),

  };

  return chThdCreateSuspended(&descriptor);

}

void urtThreadTerminate(urt_osThread_t* thread, urt_osThreadTerminateSignal_t sig)

{

  aosDbgCheck(thread != NULL);

  switch (sig) {

    case URT_THREAD_TERMINATE_REQUEST:

      chThdTerminate(thread);

      return;

    case URT_THREAD_TERMINATE_KILL:

      /*

       * TODO: implement kill functionality

       */

      chThdTerminate(thread);

      return;

  }

}

urt_osThreadState_t urtThreadGetState(urt_osThread_t* thread)

{

  aosDbgCheck(thread != NULL);

  switch (thread->state) {

    case CH_STATE_CURRENT:

      return URT_THREAD_STATE_RUNNING;

    case CH_STATE_READY:

      return URT_THREAD_STATE_READY;

    case CH_STATE_SLEEPING:

      return URT_THREAD_STATE_SLEEPING;

    case CH_STATE_WTSTART:

    case CH_STATE_SUSPENDED:

      return URT_THREAD_STATE_SUSPENDED;

    case CH_STATE_FINAL:

      return URT_THREAD_STATE_TERMINATED;

    case CH_STATE_QUEUED:

    case CH_STATE_WTSEM:

    case CH_STATE_WTMTX:

    case CH_STATE_WTCOND:

    case CH_STATE_WTEXIT:

    case CH_STATE_WTOREVT:

    case CH_STATE_WTANDEVT:

    case CH_STATE_SNDMSGQ:

    case CH_STATE_SNDMSG:

    case CH_STATE_WTMSG:

    default:

      return URT_THREAD_STATE_WAITING;

  }

}

/*============================================================================*/

/* TIMER                                                                      */

/*============================================================================*/

void urtTimerSet(urt_osTimer_t* timer, urt_delay_t delay, urt_osTimerCallback_t callback, void* cbparams)

{

  aosDbgCheck(timer != NULL);

  aosDbgCheck(callback != NULL);

  if (sizeof(urt_delay_t) > sizeof(aos_interval_t)) {

    aosTimerSetLongInterval(timer, (aos_longinterval_t)delay, callback, cbparams);

  } else {

    aosTimerSetInterval(timer, delay, callback, cbparams);

  }

  return;

}

void urtTimerSetPeriodic(urt_osTimer_t* timer, urt_delay_t period, urt_osTimerCallback_t callback, void* cbparams)

{

  aosDbgCheck(timer != NULL);

  aosDbgCheck(callback != NULL);

  if (sizeof(urt_delay_t) > sizeof(aos_interval_t)) {

    aosTimerPeriodicLongInterval(timer, (aos_longinterval_t)period, callback, cbparams);

  } else {

    aosTimerPeriodicInterval(timer, period, callback, cbparams);

  }

  return;

}