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continued with hk data pool

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added deadline missed check for fixed timeslot task,
improved doc for both periodic task and fixed timeslot task
This commit is contained in:
Robin Müller
2020-06-19 14:25:03 +02:00
parent 84b8d733c0
commit 60ae2d4565
20 changed files with 261 additions and 100 deletions
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30
osal/FreeRTOS/PeriodicTask.cpp
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@ -12,8 +12,8 @@ PeriodicTask::PeriodicTask(const char *name, TaskPriority setPriority,
BaseType_t status = xTaskCreate(taskEntryPoint, name,
setStack, this, setPriority, &handle);
if(status != pdPASS){
sif::debug << "PeriodicTask Insufficient heap memory remaining. Status: "
<< status << std::endl;
sif::debug << "PeriodicTask Insufficient heap memory remaining. "
"Status: " << status << std::endl;
}
}
@ -23,14 +23,17 @@ PeriodicTask::~PeriodicTask(void) {
}
void PeriodicTask::taskEntryPoint(void* argument) {
//The argument is re-interpreted as PeriodicTask. The Task object is global, so it is found from any place.
// The argument is re-interpreted as PeriodicTask. The Task object is
// global, so it is found from any place.
PeriodicTask *originalTask(reinterpret_cast<PeriodicTask*>(argument));
// Task should not start until explicitly requested
// in FreeRTOS, tasks start as soon as they are created if the scheduler is running
// but not if the scheduler is not running.
// to be able to accommodate both cases we check a member which is set in #startTask()
// if it is not set and we get here, the scheduler was started before #startTask() was called and we need to suspend
// if it is set, the scheduler was not running before #startTask() was called and we can continue
/* Task should not start until explicitly requested,
* but in FreeRTOS, tasks start as soon as they are created if the scheduler
* is running but not if the scheduler is not running.
* To be able to accommodate both cases we check a member which is set in
* #startTask(). If it is not set and we get here, the scheduler was started
* before #startTask() was called and we need to suspend if it is set,
* the scheduler was not running before #startTask() was called and we
* can continue */
if (not originalTask->started) {
vTaskSuspend(NULL);
@ -61,9 +64,9 @@ void PeriodicTask::taskFunctionality() {
TickType_t xLastWakeTime;
const TickType_t xPeriod = pdMS_TO_TICKS(this->period * 1000.);
/* The xLastWakeTime variable needs to be initialized with the current tick
count. Note that this is the only time the variable is written to explicitly.
After this assignment, xLastWakeTime is updated automatically internally within
vTaskDelayUntil(). */
count. Note that this is the only time the variable is written to
explicitly. After this assignment, xLastWakeTime is updated automatically
internally within vTaskDelayUntil(). */
xLastWakeTime = xTaskGetTickCount();
/* Enter the loop that defines the task behavior. */
for (;;) {
@ -76,12 +79,15 @@ void PeriodicTask::taskFunctionality() {
* current time minus the last wake time is larger than the
* wait period, a deadline was missed. */
if(xTaskGetTickCount() - xLastWakeTime >= xPeriod) {
#ifdef DEBUG
sif::warning << "PeriodicTask: " << pcTaskGetName(NULL) <<
" missed deadline!\n" << std::flush;
#endif
if(deadlineMissedFunc != nullptr) {
this->deadlineMissedFunc();
}
}
vTaskDelayUntil(&xLastWakeTime, xPeriod);
}