eive-obsw/fsfwconfig/pollingsequence/PollingSequenceFactory.h

39 lines
1.4 KiB
C++

#ifndef POLLINGSEQUENCEFACTORY_H_
#define POLLINGSEQUENCEFACTORY_H_
#include <fsfw/returnvalues/HasReturnvaluesIF.h>
class FixedTimeslotTaskIF;
/**
* All device handlers are scheduled by adding them into
* Polling Sequence Tables (PST) to satisfy stricter timing requirements of
* device communication, a device handler has four different communication steps:
* 1. DeviceHandlerIF::SEND_WRITE -> Send write via interface
* 2. DeviceHandlerIF::GET_WRITE -> Get confirmation for write
* 3. DeviceHandlerIF::SEND_READ -> Send read request
* 4. DeviceHandlerIF::GET_READ -> Read from interface
* The PST specifies precisely when the respective ComIF functions are called
* during the communication cycle time.
* The task is created using the FixedTimeslotTaskIF,
* which utilises the underlying Operating System Abstraction Layer (OSAL)
*
* @param thisSequence FixedTimeslotTaskIF * object is passed inside the
* Factory class when creating the PST
* @return
*/
namespace pst {
/* 0.4 second period init*/
ReturnValue_t pollingSequenceInitDefault(FixedTimeslotTaskIF *thisSequence);
/**
* @brief This function creates the PST for all gomspace devices. They are
* scheduled in a separate PST because the gomspace library uses
* blocking calls when requesting data from devices.
*/
ReturnValue_t gomspacePstInit(FixedTimeslotTaskIF *thisSequence);
}
#endif /* POLLINGSEQUENCEINIT_H_ */