added readme and efaultcfg

defaultcfg/config/pollingsequence/PollingSequenceFactory.cpp

@@ -0,0 +1,23 @@
+#include "PollingSequenceFactory.h"
+
+#include <fsfw/serviceinterface/ServiceInterfaceStream.h>
+#include <fsfw/devicehandlers/DeviceHandlerIF.h>
+#include <fsfw/tasks/FixedTimeslotTaskIF.h>
+
+ReturnValue_t pst::pollingSequenceInitDefault(
+        FixedTimeslotTaskIF *thisSequence) {
+	/* Length of a communication cycle */
+	uint32_t length = thisSequence->getPeriodMs();
+
+	/* Add polling sequence table here */
+
+	if (thisSequence->checkSequence() == HasReturnvaluesIF::RETURN_OK) {
+		return HasReturnvaluesIF::RETURN_OK;
+	}
+	else {
+		sif::error << "pst::pollingSequenceInitDefault: Sequence invalid!"
+		        << std::endl;
+		return HasReturnvaluesIF::RETURN_FAILED;
+	}
+}
+

defaultcfg/config/pollingsequence/PollingSequenceFactory.h

@@ -0,0 +1,32 @@
+#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 {
+
+/* Default PST */
+ReturnValue_t pollingSequenceInitDefault(FixedTimeslotTaskIF *thisSequence);
+
+
+}
+
+#endif /* POLLINGSEQUENCEINIT_H_ */