Added more documentation

Moced some documentation files to new directories

docs/Messaging/reference-counted-messages.md

@@ -0,0 +1,197 @@
+---
+title: "reference_counted_message"
+---
+
+{{< callout type="info">}}
+  Header: `reference_counted_message.h`  
+{{< /callout >}}
+
+Reference counted message types that are used by `etl::shared_message`.  
+
+**Defines the following classes**  
+
+```cpp
+etl::ireference_counted_message
+```
+The interface of all reference counted message types.
+
+---
+
+```cpp
+etl::reference_counted_message<typename TMessage, typename TCounter>
+```
+Derived from `etl::ireference_counted_message`.
+
+```cpp
+etl::persistent_message<typename TMessage>
+```
+Derived from `etl::ireference_counted_message`.
+
+## ireference_counted_message
+
+```cpp
+etl::ireference_counted_message
+```
+The interface of all reference counted message types.
+
+---
+
+```cpp
+virtual ~ireference_counted_message()
+```
+
+---
+
+```cpp
+ETL_NODISCARD virtual etl::imessage& get_message() = 0;
+```
+Get a reference to the message.
+
+---
+
+```cpp
+ETL_NODISCARD virtual const etl::imessage& get_message() const = 0;
+```
+Get a const reference to the message.
+
+---
+
+```cpp
+ETL_NODISCARD virtual etl::ireference_counter& get_reference_counter() = 0;
+```
+Get a reference to the reference counter.
+
+---
+
+```cpp
+ETL_NODISCARD virtual const etl::ireference_counter& get_reference_counter() const = 0; 
+```
+Get a const reference to the reference counter.
+
+---
+
+```cpp
+virtual void release() = 0;
+```
+Release back to the owner.
+
+## reference_counted_message
+
+```cpp
+etl::reference_counted_message<typename TMessage, typename TCounter>     
+```
+The implementation of reference counted messages owned by a pool.  
+Will static assert if TMessage is no derived from etl::imessage.
+
+---
+
+```cpp
+reference_counted_message(const TMessage& message, etl::ireference_counted_message_pool& owner)
+```
+Constructs from a message and the pool from which the reference counted message is allocated.  
+The message is copied.
+
+---
+
+```cpp
+reference_counted_message(etl::ireference_counted_message_pool& owner)
+```
+Constructs from a message and the pool from which the reference counted message is allocated.  
+The message is default constructed.
+
+---
+
+```cpp
+ETL_NODISCARD TMessage& get_message() ETL_OVERRIDE
+```
+Get a reference to the message.
+
+---
+
+```cpp
+ETL_NODISCARD const TMessage& get_message() const ETL_OVERRIDE
+```
+Get a const reference to the message.
+
+---
+
+```cpp
+ETL_NODISCARD etl::ireference_counter& get_reference_counter() ETL_OVERRIDE
+```
+Get a reference to the reference counter.
+
+---
+
+```cpp
+ETL_NODISCARD const etl::ireference_counter& get_reference_counter() const ETL_OVERRIDE
+```
+Get a const reference to the reference counter.
+
+---
+
+```cpp
+void release() ETL_OVERRIDE
+```
+Release back to the owner pool.
+
+## persistent_message
+
+```cpp
+etl::persistent_message<typename TMessage>     
+```
+
+The implementation of reference counted messages not owned by a pool.  
+It's counter type is `void`.  
+Will static assert if `TMessage` is not derived from `etl::imessage`.
+
+---
+
+```cpp
+persistent_message(const TMessage& message)
+```
+Constructs from a message.  
+The message is copied.
+
+---
+
+```cpp
+ETL_NODISCARD TMessage& get_message() ETL_OVERRIDE
+```
+Get a reference to the message.
+
+---
+
+```cpp
+ETL_NODISCARD const TMessage& get_message() const ETL_OVERRIDE
+```
+Get a const reference to the message.
+
+---
+
+```cpp
+ETL_NODISCARD etl::ireference_counter& get_reference_counter() ETL_OVERRIDE
+```
+Get a reference to the reference counter.
+
+---
+
+```cpp
+ETL_NODISCARD const etl::ireference_counter& get_reference_counter() const ETL_OVERRIDE
+```
+Get a const reference to the reference counter.
+
+---
+
+```cpp
+void release() ETL_OVERRIDE
+```
+Does nothing for a persistent message.
+
+## For C++11, with atomic support.
+
+```cpp
+template <typename TMessage>
+using atomic_counted_message = etl::reference_counted_message<TMessage, etl::atomic_int32_t>;
+```
+Defines an alias to a reference counted message that uses an atomic.
+

docs/callbacks/delegate-service.md

@@ -0,0 +1,93 @@
+---
+title: "delegate_service"
+---
+
+{{< callout type="info">}}
+  Header: `delegate_service.h`  
+{{< /callout >}}
+
+Delegate Service
+This template class allows easier integration of 'C' style events (such as interrupt vectors) and C++ handlers.  
+It can allow abstraction between low level events such as interrupts and their application dependent handlers.  
+The handlers may be any combination of global, static, member functions, lambdas and functors. 
+It utilises the templated function wrapper.  
+
+The delegate callbacks are identified by an id. The values of the ids must range from zero or a specified offset, up to the maximum range of specified delegates. Calling an unused delegate id will either do nothing or, if the user has specified a handler, call this with the id of the delegate.  
+
+There are functions that use both runtime and compile time checks of the delegate id.  
+Compile time is preferable.  
+
+---
+
+```cpp
+template <size_t Range, size_t Offset = 0U, const etl::delegate<void(size_t)>* Delegates = nullptr>
+delegate_service
+```
+`Range`  
+The id range of the delegates (last - first + 1).  
+
+`Offset`  
+The starting id for the range. Default `0`.  
+
+`Delegates`  
+An optional pointer to an array of delegate pointers.  
+
+If the pointer to a delegate array is supplied as a template parameter then the delegate service may be declared `constexpr`, otherwise the service is runtime only.
+
+## Member functions
+
+```cpp
+delegate_service()
+```
+Runtime only.  
+Sets all of the delegates to route to the unhandled delegate.  
+Sets the unhandled delegate to default (do nothing).
+
+---
+
+```cpp
+template <const size_t ID>
+void register_delegate(etl::delegate<void(size_t)>& callback)
+```
+Runtime only.  
+Registers delegate with the id specified in the template parameter.  
+A compile time error will occur if the id is out of range.
+
+---
+
+```cpp
+void register_delegate(size_t id, etl::delegate<void(size_t)>& callback)
+```
+Runtime only.  
+Registers delegate with the id specified in the template parameter.  
+The registration will be ignored if the id is out of range.
+
+---
+
+```cpp
+void register_unhandled_delegate(etl::delegate<void(size_t)>& callback)
+```
+Runtime only.  
+Registers the delegate to be used for unhandled ids.
+
+---
+
+```cpp
+template <const size_t ID>
+void call()
+```
+Calls the delegate associated with the id.  
+Calls the unhandled delegate if the id has not been registered.  
+A compile time error will occur if the id is out of range.
+
+---
+
+```cpp
+void call(const size_t id)
+```
+Calls the delegate associated with the id.  
+Calls the unhandled delegate if the id has not been registered or if is out of range.
+
+## Example
+
+See the example project in `examples\FunctionInterruptSimulation-Delegates`.

docs/callbacks/signal.md

@@ -1,96 +1,152 @@
-signal
-20.44.0
+---
+title: "signal"
+---
 
-A class that implements simple signal/slot framework.
-Uses etl::delegate as the default slot type, though other types may be used.
+{{< callout type="info">}}
+  Header: `signal.h`  
+  Since: `20.44.0`  
+{{< /callout >}}
 
+A class that implements simple signal/slot framework.  
+Uses `etl::delegate` as the default slot type, though other types may be used.
+
+```cpp
 template <typename TFunction, size_t Size, typename TSlot = etl::delegate<TFunction>>
 class signal
-TFunction  The callback function signature.
-Size       The maximum numbr of slots for the signal.
-TSlot      The callback slot type. Default = etl::delegate<TFunction>
-____________________________________________________________________________________________________
-Types
+```
+`TFunction`  The callback function signature.
+`Size`       The maximum numbr of slots for the signal.
+`TSlot`      The callback slot type. Default = `etl::delegate<TFunction>`
 
-slot_type Defined as the slot type.
-size_type The size type used internally.
-span_type The span type used in the connect API.
-____________________________________________________________________________________________________
-Constructors
+## Types
+`slot_type` Defined as the slot type.
+`size_type` The size type used internally.
+`span_type` The span type used in the connect API.
 
+## Constructors
+```cpp
 template <typename... TSlots>
 ETL_CONSTEXPR14 explicit signal(TSlots&&... slots) ETL_NOEXCEPT
-Construct the signal from a variadic list of slots.
-Can be used as a constexpr constructor.
-Static asserts if any of the 
-____________________________________________________________________________________________________
-Connect
+```
+Construct the signal from a variadic list of slots.  
+Can be used as a `constexpr` constructor.  
+Static asserts if any of the slots are not `slot_type`.  
+Static asserts if the number of slots exceeds capacity.
 
+## Connect
+```cpp
 bool connect(const slot_type& slot)
-Connects the slot, if not already connected and returns true.
-If the signal is full, ETL_ASSERTs etl::signal_full and returns false.
-____________________________________________________________________________________________________
+```
+Connects the slot, if not already connected and returns `true`.  
+If the signal is full, asserts `etl::signal_full` and returns `false`.
+
+---
+
+```cpp
 bool connect(std::initializer_list<const slot_type> slots)
-Connects all of the slots and returns true.
-If the number of slots exceeds the signal's max size, asserts an etl::signal_full and returns false.
-Enabled if ETL_HAS_INITIALIZER_LIST and ETL_USING_CPP17 are defined as 1.
-____________________________________________________________________________________________________
+```
+Connects all of the slots and returns `true`.  
+If the number of slots exceeds the signal's max size, asserts an `etl::signal_full` and returns `false`.  
+Enabled if `ETL_HAS_INITIALIZER_LIST` and `ETL_USING_CPP17` are defined as `1`.
+
+---
+
+```cpp
 bool connect(const span_type slots)
-Connects all of the slots and returns true.
-If the number of slots exceeds the signal's max size, asserts an etl::signal_full and returns false.
-____________________________________________________________________________________________________
-Disconnect
+```
+Connects all of the slots and returns `true`.
+If the number of slots exceeds the signal's max size, asserts an `etl::signal_full` and returns `false`.
 
+## Disconnect
+
+```cpp
 void disconnect(const slot_type& slot) ETL_NOEXCEPT
-Disconnects slot from the signal.
-If the signal does not contain the slot. there is no error.
-____________________________________________________________________________________________________
-void disconnect(std::initializer_list<const slot_type> slots) ETL_NOEXCEPT
-Disconnects all of the slots from the signal.
-If the signal does not contain a particular slot, there is no error.
-Enabled if ETL_HAS_INITIALIZER_LIST and ETL_USING_CPP17 are defined as 1.
-____________________________________________________________________________________________________
-void disconnect(const span_type slots) ETL_NOEXCEPT
-Disconnects all of the slots from the signal.
-If the signal does not contain a particular slot, there is no error.
-____________________________________________________________________________________________________
-void disconnect_all() ETL_NOEXCEPT
-Disconnects all slots from the signal.
-____________________________________________________________________________________________________
-Status
-    
-ETL_CONSTEXPR14 bool connected(const slot_type& slot) const ETL_NOEXCEPT
-Checks if a slot is connected to the signal.
-____________________________________________________________________________________________________
-ETL_CONSTEXPR14 bool empty() const ETL_NOEXCEPT
-Return true if the signal has no slots connected.
-____________________________________________________________________________________________________
-ETL_CONSTEXPR14 bool full() const ETL_NOEXCEPT
-Return true if the signal has the maximum number of slots connected.
-____________________________________________________________________________________________________
-ETL_CONSTEXPR14 size_type max_size() const ETL_NOEXCEPT
-Returns the total number of slots that can be connected.
-____________________________________________________________________________________________________
-ETL_CONSTEXPR14 size_type size() const ETL_NOEXCEPT
-Returns the total slots currently connected.
-____________________________________________________________________________________________________
-ETL_CONSTEXPR14 size_type available() const ETL_NOEXCEPT
-Returns the total empty slots available.
-____________________________________________________________________________________________________
-Call
+```
+Disconnects slot from the signal.  
+If the signal does not contain the slot there is no error.
 
+---
+
+```cpp
+void disconnect(std::initializer_list<const slot_type> slots) ETL_NOEXCEPT
+```
+Disconnects all of the slots from the signal.  
+If the signal does not contain a particular slot, there is no error.  
+Enabled if `ETL_HAS_INITIALIZER_LIST` and `ETL_USING_CPP17` are defined as `1`.
+
+---
+
+```cpp
+void disconnect(const span_type slots) ETL_NOEXCEPT
+```
+Disconnects all of the slots from the signal.  
+If the signal does not contain a particular slot, there is no error.  
+
+```cpp
+void disconnect_all() ETL_NOEXCEPT
+```
+Disconnects all slots from the signal.
+
+## Status
+
+```cpp 
+ETL_CONSTEXPR14 bool connected(const slot_type& slot) const ETL_NOEXCEPT
+```
+Checks if a slot is connected to the signal.
+
+---
+
+```cpp
+ETL_CONSTEXPR14 bool empty() const ETL_NOEXCEPT
+```
+Return `true` if the signal has no slots connected.
+
+---
+
+```cpp
+ETL_CONSTEXPR14 bool full() const ETL_NOEXCEPT
+```
+Return `true` if the signal has the maximum number of slots connected.
+
+---
+
+```cpp
+ETL_CONSTEXPR14 size_type max_size() const ETL_NOEXCEPT
+```
+Returns the total number of slots that can be connected.
+
+---
+
+```cpp
+ETL_CONSTEXPR14 size_type size() const ETL_NOEXCEPT
+```
+Returns the total slots currently connected.
+
+---
+
+```cpp
+ETL_CONSTEXPR14 size_type available() const ETL_NOEXCEPT
+```
+Returns the total empty slots available.
+
+## Call
+```cpp
 template <typename... TArgs>
 void operator()(TArgs&&... args) const ETL_NOEXCEPT
+```
 Function operator that calls each slot with the supplied parameters.
-____________________________________________________________________________________________________
-Errors
 
-etl::signal_full  Indicates that an attempt to add a slot to a full signal occurred.
+## Errors
 
-Inherits from etl::signal_exception
-____________________________________________________________________________________________________
-Examples
+```cpp
+etl::signal_full
+```
+Indicates that an attempt to add a slot to a full signal occurred.  
+Inherits from `etl::signal_exception`.
 
+## Examples
+
+```cpp
 constexpr size_t MaxSlots = 3;
 
 using callback_type = void(int a, int b);
@@ -99,9 +155,11 @@ using slot_type     = signal_type::slot_type;
 using span_type     = signal_type::span_type;
 
 using not_slot_type = etl::delegate<void(int)>;
-____________________________________________________________________________________________________
-Defining the slot functions
+```
 
+**Defining the slot functions**  
+
+```cpp
 void Function1(int a, int b)
 {
   std::cout << "Function1: " << a << "," << b << "\n";
@@ -116,7 +174,7 @@ void Function3(int a, int b)
 {
   std::cout << "Function3: " << a << "," << b << "\n";
 }
-
+0
 void Function4(int a, int b)
 {
   std::cout << "Function4: " << a << "," << b << "\n";
@@ -126,9 +184,11 @@ void Function5(int a)
 {
   std::cout << "Function5: " << a << "\n";
 }
-____________________________________________________________________________________________________
-Creating the slots
+```
 
+**Creating the slots**  
+
+```cpp
 constexpr slot_type MakeSlot1() noexcept
 {
 return slot_type::create<Function1>();
@@ -153,9 +213,11 @@ constexpr not_slot_type MakeSlot5() noexcept
 {
 return not_slot_type::create<Function5>();
 }
-____________________________________________________________________________________________________
-Defining the signal as constexpr
+```
 
+**Define the signals as `constexpr`**  
+
+```cpp
 // Define the signal and connect as constexpr
 constexpr signal_type({ MakeSlot1(), MakeSlot2(), MakeSlot3() });
 
@@ -166,9 +228,11 @@ constexpr signal_type({ MakeSlot1(), MakeSlot2(), MakeSlot3(), MakeSlot4() });
 // Define the signal and connect as constexpr.
 // Static assert "All slots must be slot_type"
 constexpr signal_type({ MakeSlot1(), MakeSlot2(), MakeSlot5() });
-____________________________________________________________________________________________________
-Defining the signal at runtime
+```
 
+**Defining the signal at runtime**  
+
+```cpp
 // Define the signal.
 signal_type signal;
 
@@ -183,9 +247,11 @@ signal.connect({ MakeSlot1(), MakeSlot2(), MakeSlot3() });
 // Connect using span.
 const slot_type slot_list[] = { MakeSlot1(), MakeSlot2(), MakeSlot3() };
 signal.connect(slot_list);
-____________________________________________________________________________________________________
-Checking the status
+```
 
+**Checking the status**  
+
+```cpp
 // Define the signal.
 signal_type signal;
 
@@ -243,15 +309,19 @@ signal.connected(MakeSlot2()) // Returns true
 signal.connected(MakeSlot3()) // Returns true
 
 signal.connect(MakeSlot4());  // ETL_ASSERT etl::signal_full. Returns false
-____________________________________________________________________________________________________
-Calling the signal
+```
 
+**Calling the signal**  
+
+```cpp
 signal_type signal({ MakeSlot1(), MakeSlot2(), MakeSlot3() });
 
 signal(1, 2); // Call all of the slots with the parameters 1 & 2
+```
 
-Output
+**Output**  
+```
 Function1: 1,2
 Function2: 1,2
 Function3: 1,2
-
+```

docs/multi-tasking/_index.md

@@ -0,0 +1,4 @@
+---
+title: "Multi-Tasking"
+weight: 100
+---

docs/raw/frameworks/Delegate Service.txt

@@ -1,58 +0,0 @@
-Delegate Service
-This template class allows easier integration of 'C' style events (such as interrupt vectors) and C++ handlers.
-It can allow abstraction between low level events such as interrupts and their application dependent handlers.
-The handlers may be any combination of global, static, member functions, lambdas and functors. 
-It utilises the templated function wrapper. See here.
-
-The delegate callbacks are identified by an id. The values of the ids must range from zero or a specified offset, up to the maximum range of specified delegates. Calling an unused delegate id will either do nothing or, if the user has specified a handler, call this with the id of the delegate.
-
-There are functions that use both runtime and compile time checks of the delegate id. 
-Compile time is preferable.
-
-template <size_t Range, size_t Offset = 0U, const etl::delegate<void(size_t)>* Delegates = nullptr>
-etl::delegate_service
-
-Range     The id range of the delegates (last - first + 1).
-Offset    The starting id for the range. Default 0.
-Delegates An optional pointer to an array of delegate pointers.
-
-If the pointer to a delegate array is supplied as a template parameter then the delegate service may be declared constexpr, otherwise the service is runtime only.
-____________________________________________________________________________________________________
-Member functions
-____________________________________________________________________________________________________
-delegate_service()
-Runtime only
-Sets all of the delegates to route to the unhandled delegate.
-Sets the unhandled delegate to default (do nothing).
-____________________________________________________________________________________________________
-template <const size_t ID>
-void register_delegate(etl::delegate<void(size_t)>& callback)
-Runtime only
-Registers delegate with the id specified in the template parameter.
-A compile time error will occur if the id is out of range.
-____________________________________________________________________________________________________
-void register_delegate(size_t id, etl::delegate<void(size_t)>& callback)
-Runtime only
-Registers delegate with the id specified in the template parameter.
-The registration will be ignored if the id is out of range.
-____________________________________________________________________________________________________
-void register_unhandled_delegate(etl::delegate<void(size_t)>& callback)
-Runtime only
-Registers the delegate to be used for unhandled ids.
-____________________________________________________________________________________________________
-template <const size_t ID>
-void call()
-Calls the delegate associated with the id. 
-Calls the unhandled delegate if the id has not been registered.
-A compile time error will occur if the id is out of range.
-____________________________________________________________________________________________________
-void call(const size_t id)
-Calls the delegate associated with the id. 
-Calls the unhandled delegate if the id has not been registered or if is out of range.
-____________________________________________________________________________________________________
-Example
-
-Tutorial
-
-See the example project in etl\examples\FunctionInterruptSimulation-Delegates
-

docs/raw/frameworks/Reference Counted Messages.txt

@@ -1,102 +0,0 @@
-Reference Counted Messages
-
-Reference counted message types that are used by etl::shared_message.
-
-Defines the following classes.
-
-etl::ireference_counted_message
-The interface of all reference counted message types.
-
-etl::reference_counted_message<typename TMessage, typename TCounter>
-Derived from etl::ireference_counted_message
-
-etl::persistent_message<typename TMessage>
-Derived from etl::ireference_counted_message
-____________________________________________________________________________________________________
-ireference_counted_message
-
-etl::ireference_counted_message
-The interface of all reference counted message types.
-____________________________________________________________________________________________________
-virtual ~ireference_counted_message()
-____________________________________________________________________________________________________
-ETL_NODISCARD virtual etl::imessage& get_message() = 0;
-Get a reference to the message.
-____________________________________________________________________________________________________
-ETL_NODISCARD virtual const etl::imessage& get_message() const = 0;
-Get a const reference to the message.
-____________________________________________________________________________________________________
-ETL_NODISCARD virtual etl::ireference_counter& get_reference_counter() = 0;
-Get a reference to the reference counter.
-____________________________________________________________________________________________________
-ETL_NODISCARD virtual const etl::ireference_counter& get_reference_counter() const = 0; 
-Get a const reference to the reference counter.
-____________________________________________________________________________________________________
-virtual void release() = 0;
-Release back to the owner.
-____________________________________________________________________________________________________
-reference_counted_message
-
-etl::reference_counted_message<typename TMessage, typename TCounter>     
-
-The implementation of reference counted messages owned by a pool.
-
-Will static assert if TMessage is no derived from etl::imessage.
-____________________________________________________________________________________________________
-reference_counted_message(const TMessage& message, etl::ireference_counted_message_pool& owner)
-Constructs from a message and the pool from which the reference counted message is allocated.
-The message is copied.
-____________________________________________________________________________________________________
-reference_counted_message(etl::ireference_counted_message_pool& owner)
-Constructs from a message and the pool from which the reference counted message is allocated.
-The message is default constructed.
-____________________________________________________________________________________________________
-ETL_NODISCARD TMessage& get_message() ETL_OVERRIDE
-Get a reference to the message.
-____________________________________________________________________________________________________
-ETL_NODISCARD const TMessage& get_message() const ETL_OVERRIDE
-Get a const reference to the message.
-____________________________________________________________________________________________________
-ETL_NODISCARD etl::ireference_counter& get_reference_counter() ETL_OVERRIDE
-Get a reference to the reference counter.
-____________________________________________________________________________________________________
-ETL_NODISCARD const etl::ireference_counter& get_reference_counter() const ETL_OVERRIDE
-Get a const reference to the reference counter.
-____________________________________________________________________________________________________
-void release() ETL_OVERRIDE
-Release back to the owner pool.
-____________________________________________________________________________________________________
-persistent_message
-
-etl::persistent_message<typename TMessage>     
-
-The implementation of reference counted messages not owned by a pool.
-It's counter type is void.
-
-Will static assert if TMessage is not derived from etl::imessage.
-____________________________________________________________________________________________________
-persistent_message(const TMessage& message)
-Constructs from a message.
-The message is copied.
-____________________________________________________________________________________________________
-ETL_NODISCARD TMessage& get_message() ETL_OVERRIDE
-Get a reference to the message.
-____________________________________________________________________________________________________
-ETL_NODISCARD const TMessage& get_message() const ETL_OVERRIDE
-Get a const reference to the message.
-____________________________________________________________________________________________________
-ETL_NODISCARD etl::ireference_counter& get_reference_counter() ETL_OVERRIDE
-Get a reference to the reference counter.
-____________________________________________________________________________________________________
-ETL_NODISCARD const etl::ireference_counter& get_reference_counter() const ETL_OVERRIDE
-Get a const reference to the reference counter.
-____________________________________________________________________________________________________
-void release() ETL_OVERRIDE
-Does nothing for a persistent message.
-____________________________________________________________________________________________________
-For C++11, with atomic support.
-
-template <typename TMessage>
-using atomic_counted_message = etl::reference_counted_message<TMessage, etl::atomic_int32_t>;
-Defines an alias to a reference counted message that uses an atomic.
-

docs/raw/frameworks/State Chart.txt

@@ -1,310 +0,0 @@
-State Chart
-A finite state machine driven by the reception of events. The incoming event will call the optional action based on a transition table. Optional on_entry and on_exit handlers can be declared in a state table.
-An optional parameter may be sent to event handlers.
-
-This FSM is simpler, both in implementation and use, than the message based FSM class defined elsewhere in the ETL. See etl::fsm.
-
-Defines the following classes:-
-etl::istate_chart
-etl::state_chart<TObject>
-etl::state_chart<TObject, TParameter>
-
-TParameter defines how a data parameter will be passed to event handlers.
-This may be by value, pointer, reference or const reference.
-For C++11 or above, you may pass an rvalue reference.
-____________________________________________________________________________________________________
-istate_chart<TParameter> 20.23.0
-The base for all state charts.
-
-Types
-event_id_t
-The type for event ids.
-
-state_id_t
-The type for state ids.
-
-Member Functions
-event_it_t get_state_id() const
-Returns the id of the state.
-____________________________________________________________________________________________________
-virtual void process_event(event_id_t event_id, TParameter data) = 0
-etl::state_chart will override this.
-Processes the event message.
-If a data parameter has been configured for etl::state_chart, then one will be default constructed.
-____________________________________________________________________________________________________
-virtual void start(bool on_entry_initial = true)
-Starts the state chart.
-____________________________________________________________________________________________________
-istate_chart<void> 20.23.0
-The base for all state charts.
-
-Types
-event_id_t
-The type for event ids.
-
-state_id_t
-The type for state ids.
-
-Member Functions
-event_it_t get_state_id() const
-Returns the id of the state.
-____________________________________________________________________________________________________
-virtual void process_event(event_id_t event_id) = 0
-etl::state_chart will override this.
-Processes the event message.
-If a data parameter has been configured for etl::state_chart, then one will be default constructed.
-____________________________________________________________________________________________________
-virtual void start(bool on_entry_initial = true)
-Starts the state chart.
-____________________________________________________________________________________________________
-state_chart
-For run-time defined transition and state tables.
-A templated class. Inherits from etl::istate_chart<TParameter> or etl::istate_chart<void>.
-
-Template parameters
-TObject     The object type that supplies actions, guards, on entry and on exit functionality.
-TParameter  The type that will be passed as a parameter (optional).
-____________________________________________________________________________________________________
-Types
-
-TParameter parameter_t
-____________________________________________________________________________________________________
-Constructor
-
-state_chart(TObject&          object,
-            const transition* transition_table_begin,
-            const transition* transition_table_end,
-            const state*      state_table_begin,
-            const state*      state_table_end,
-            const state_id_t  state_id)
-
-object
-The instance of the that supplies actions, guards, on entry and on exit functionality.
-
-transition_table_begin
-transition_table_end
-The table of transitions, defining the relationship between events and state changes; defines option actions and guards.
-Note: The transition table must have the same lifetime as the state chart. i.e. It must exist while the state chart exists.
-
-state_table_begin
-state_table_end
-Sets the optional state table defining any 'on entry' and 'on exit' for states.
-Not all states have to have entries in the table. States with no  'on entry' and 'on_exit' functionality may be omitted.
-Note: The state table must have the same lifetime as the state chart. i.e. It must exist while the state chart exists. 
-
-state_id
-The initial state id.
-Note: The constructors do not call the 'on entry' function for the initial state
-____________________________________________________________________________________________________
-state_chart_ct void parameter
-state_chart_ctp non-void parameter
-For compile-time defined transition and state tables.
-A templated class. Inherits from etl::istate_chart<TParameter> or etl::istate_chart<void>.
-
-Template parameters
-TObject                The object type that supplies actions, guards, on entry and on exit functionality.
-TParameter             The type that will be passed as a parameter (state_chart_ctp).
-TObject_Ref            A reference to the TObject instance.
-Transition_Table_Begin A pointer to the start of the transition table.
-Transition_Table_Size  The number of elements in the transition table.
-State_Table_Begin      A pointer to the start of the state table.
-State_Table_Size       The number of elements in the transition table.
-Initial_State          The initial state.
-____________________________________________________________________________________________________
-Types
-TParameter parameter_t
-____________________________________________________________________________________________________
-Constructor
-
-state_chart()
-____________________________________________________________________________________________________
-Member Functions
-
-void start(bool on_entry_initial = true)
-Starts the state chart.
-if on_entry_initial is true and the initial state has an on_entry method, then this will be called.
-The function does nothing after the first call.
-____________________________________________________________________________________________________
-void process_event(event_id_t event_id) For void parameter.
-Triggers the state chart with the event.
-____________________________________________________________________________________________________
-void process_event(event_id_t event_id, parameter_t data) For non-void parameter.
-Triggers the state chart with the event.
-Passes the parameter to the event handler.
-____________________________________________________________________________________________________
-TObject& get_object()
-const TObject& get_object() const
-Gets the implementation object instance.
-____________________________________________________________________________________________________
-void set_transition_table(const transition* transition_table_begin,
-                          const transition* transition_table_end)
-Not defined for state_chart_ct or state_chart_ctp.
-The table of transitions, defining the relationship between events and state changes; defines option actions and guards.
-Note: The transition table must have the same scope as the state chart. i.e. It must exist while the state chart exists.
-____________________________________________________________________________________________________
-void set_state_table(const state* state_table_begin,
-                     const state* state_table_end)
-Not defined for state_chart_ct or state_chart_ctp.
-Sets the optional state table defining any on_entry and on_exit for states.
-Not all states have to have entries in the table. States with no  on_entry and on_exit functionality may be omitted.
-Note: The state table must have the same scope as the state chart. i.e. It must exist while the state chart exists. 
-____________________________________________________________________________________________________
-Member Types
-
-transition
-____________________________________________________________________________________________________
-For etl::state_chart<TImplementation>
-transition(const state_id_t current_state_id,
-           const event_id_t event_id,
-           const state_id_t next_state_id,
-           void (TObject::* const action)() = nullptr,
-           bool (TObject::* const guard)()  = nullptr)
-
-transition(const event_id_t event_id,
-           const state_id_t next_state_id,
-           void (TObject::* const action)() = nullptr,
-           bool (TObject::* const guard)()  = nullptr)
-____________________________________________________________________________________________________
-For etl::state_chart<TImplementation, TParameter>
-transition(const state_id_t current_state_id,
-           const event_id_t event_id,
-           const state_id_t next_state_id,
-           void (TObject::* const action)(data_parameter_type) = nullptr,
-           bool (TObject::* const guard)()  = nullptr)
-
-transition(const event_id_t event_id,
-           const state_id_t next_state_id,
-           void (TObject::* const action)(data_parameter_type) = nullptr,
-           bool (TObject::* const guard)()  = nullptr)
-
-current_state_id
-The state id that the state chart must be in for the event to be processed.
-If the second constructor form is used then the 'current state' is considered to be don't care.
-
-event_id
-The event id for this transition.
-
-next_state_id
-The state id that the state chart will be in after the event.
-
-action
-An optional pointer to the action that will be called when the transition occurs.
-
-guard
-An optional pointer to the guard for this transition. The transition will only occur if the guard returns true.
-If the guard returns false then the scan of the transition table continues from the next position.
-____________________________________________________________________________________________________
-state
-
-ETL_CONSTEXPR state(const state_id_t state_id_,
-                    void (TObject::* const on_entry)() = ETL_NULLPTR,
-                    void (TObject::* const on_exit)()  = ETL_NULLPTR)
-
-state_id
-The ID of the state.
-
-on_entry
-An optional pointer to the function that will be called when a state is entered.
-
-on_exit
-An optional pointer to the function that will be called when a state is entered.
-___________________________________________________________________________________________________
-Example
-
-class MotorControl : public etl::state_chart<MotorControl>
-{
-  void OnStart();
-  void OnStop();
-  void OnSetSpeed();
-  bool StartGuard();
-
-  static const etl::array<MotorControl::transition, 5> transitionTable;
-};
-
-const etl::array<MotorControl::transition, 5> MotorControl::transitionTable =
-{
-  MotorControl::transition(IDLE,
-                           START,
-                           RUNNING,
-                           &MotorControl::OnStart, 
-                           &MotorControl::StartGuard),
-
-  MotorControl::transition(RUNNING, 
-                           STOP,                                                    
-                           WINDING_DOWN, 
-                           &MotorControl::OnStop),
-
-  MotorControl::transition(WINDING_DOWN,
-                           STOPPED,
-                           IDLE),
-
-  MotorControl::transition(RUNNING,
-                           EMERGENCY_STOP,
-                           IDLE,
-                           &MotorControl::OnStop),
-
-  MotorControl::transition(RUNNING,
-                           SET_SPEED,
-                           RUNNING,
-                           &MotorControl::OnSetSpeed)
-};
-____________________________________________________________________________________________________
-state
-
-state(const state_id_t state_id,
-      void (TObject::* const on_entry)() = nullptr,
-      void (TObject::* const on_exit)()  = nullptr)
-
-state_id
-The id for this state.
-
-on_entry
-An optional pointer to the function that will be called when the state chart enters the state.
-
-on_exit
-An optional pointer to the function that will be called when the state chart exits the state.
-
-____________________________________________________________________________________________________
-Example
-
-class MotorControl : public etl::state_chart<MotorControl>
-{
-  void OnExitIdle();
-  void OnEnterStopped();
-  void OnEnterRunning);
-  void OnExitRunning();
-
-  static const etl::array<MotorControl::state, 3> stateTable;
-};
-
-const etl::array<MotorControl::state, 3> MotorControl::stateTable =
-{
-  MotorControl::state(IDLE,    nullptr,                       &MotorControl::OnExitIdle),
-  MotorControl::state(STOPPED, &MotorControl::OnEnterStopped, nullptr),
-  MotorControl::state(RUNNING, &MotorControl::OnEnterRunning, &MotorControl::OnExitRunning)
-};
-____________________________________________________________________________________________________
-Notes
-____________________________________________________________________________________________________
-Order of execution
-When an event is processed, the execution occurs in the following order.
-(Assuming all functions have been declared in the transition and state tables)
-
-A call to the guard function.
-A call to the action function.
-A call to the current state's exit function (if the transition changes the state).
-A call to the next state's entry function (if the transition changes the state).
-____________________________________________________________________________________________________
-Usage
-The state chart may either used with inheritance or composition.
-
-class Implementation : public etl::state_chart<Implementation>
-
-class Implementation
-{
-   etl::state_chart<Implementation> stateChart;
-};
-
-Use inheritance when the implementation is a state machine.
-Use composition if the implementation contains a state machine.
-

docs/state machines/_index.md

@@ -0,0 +1,4 @@
+---
+title: "State Machines"
+weight: 100
+---

docs/state machines/state-chart.md

@@ -0,0 +1,433 @@
+---
+title: "state_chart"
+---
+
+{{< callout type="info">}}
+  Header: `state_chart.h`  
+{{< /callout >}}
+
+State Chart  
+A finite state machine driven by the reception of events. The incoming event will call the optional action based on a transition table. Optional on_entry and on_exit handlers can be declared in a state table.
+An optional parameter may be sent to event handlers.  
+
+This FSM is simpler, both in implementation and use, than the message based FSM class defined elsewhere in the ETL. `See etl::fsm`.  
+
+**Defines the following classes**  
+```cpp
+etl::istate_chart
+etl::state_chart<TObject>
+etl::state_chart<TObject, TParameter>
+```
+
+`TParameter` defines how a data parameter will be passed to event handlers.  
+This may be by value, pointer, reference or const reference.  
+For C++11 or above, you may pass an rvalue reference.
+
+---
+
+```cpp
+istate_chart<TParameter>
+```
+The base for all state charts.  
+Since: `20.23.0`
+
+## Types
+```cpp
+event_id_t
+```
+The type for event ids.
+
+---
+
+```cpp
+state_id_t
+```
+The type for state ids.
+
+## Member Functions
+
+```cpp
+event_it_t get_state_id() const
+```
+Returns the id of the state.
+
+---
+
+```cpp
+virtual void process_event(event_id_t event_id, TParameter data) = 0
+```
+`etl::state_chart` will override this.  
+Processes the event message.  
+If a data parameter has been configured for `etl::state_chart`, then one will be default constructed.
+
+---
+
+```cpp
+virtual void start(bool on_entry_initial = true)
+```
+Starts the state chart.
+
+---
+
+```cpp
+istate_chart<void>
+```
+The base for all state charts.  
+Since: `20.23.0`
+
+## Types
+```cpp
+event_id_t
+```
+The type for event ids.
+
+---
+
+```cpp
+state_id_t
+```
+The type for state ids.
+
+## Member Functions
+```cpp
+event_it_t get_state_id() const
+```
+Returns the id of the state.
+
+---
+
+```cpp
+virtual void process_event(event_id_t event_id) = 0
+```
+`etl::state_chart` will override this.  
+Processes the event message.  
+If a data parameter has been configured for `etl::state_chart`, then one will be default constructed.
+
+---
+
+```cpp
+virtual void start(bool on_entry_initial = true)
+```
+Starts the state chart.
+
+---
+
+```cpp
+state_chart
+```
+For run-time defined transition and state tables.  
+Inherits from `etl::istate_chart<TParameter>` or `etl::istate_chart<void>`.
+
+## Template parameters
+`TObject`     The object type that supplies actions, guards, on entry and on exit functionality.
+`TParameter`  The type that will be passed as a parameter (optional).
+
+## Types
+
+`TParameter` parameter_t
+
+## Constructor
+```cpp
+state_chart(TObject&          object,
+            const transition* transition_table_begin,
+            const transition* transition_table_end,
+            const state*      state_table_begin,
+            const state*      state_table_end,
+            const state_id_t  state_id)
+```
+`object`  
+The instance of the that supplies actions, guards, on entry and on exit functionality.  
+
+`transition_table_begin`  
+`transition_table_end`  
+The table of transitions, defining the relationship between events and state changes; defines option actions and guards.
+Note: The transition table must have the same lifetime as the state chart. i.e. It must exist while the state chart exists.
+
+`state_table_begin`  
+`state_table_end`  
+Sets the optional state table defining any `on entry` and `on exit` for states.  
+Not all states have to have entries in the table. States with no  'on entry' and 'on_exit' functionality may be omitted.  
+Note: The state table must have the same lifetime as the state chart. i.e. It must exist while the state chart exists. 
+
+`state_id`  
+The initial state id.  
+Note: The constructors do not call the `on entry` function for the initial state.  
+
+`state_chart_ct` void parameter.  
+`state_chart_ctp` non-void parameter.  
+
+---
+
+**For compile-time defined transition and state tables.**  
+```cpp
+A templated class. Inherits from `etl::istate_chart<TParameter>` or `etl::istate_chart<void>`.
+```
+`TObject`  
+The object type that supplies actions, guards, on entry and on exit functionality.  
+
+`TParameter`  
+The type that will be passed as a parameter (state_chart_ctp).  
+
+`TObject_Ref`  
+A reference to the TObject instance.  
+
+`Transition_Table_Begin`  
+A pointer to the start of the transition table.  
+
+`Transition_Table_Size`  
+The number of elements in the transition table.  
+
+`State_Table_Begin`  
+A pointer to the start of the state table.  
+
+`State_Table_Size`  
+The number of elements in the transition table.  
+
+`Initial_State`  
+The initial state.
+
+## Types
+```cpp
+TParameter parameter_t
+```
+
+## Constructor
+
+```cpp
+state_chart()
+```
+
+## Member Functions
+
+```cpp
+void start(bool on_entry_initial = true)
+```
+Starts the state chart.  
+if on_entry_initial is `true` and the initial state has an on_entry method, then this will be called.  
+The function does nothing after the first call.
+
+---
+
+```cpp
+void process_event(event_id_t event_id)
+```
+Triggers the state chart with the event.  
+For `void` parameter.
+
+---
+
+```cpp
+void process_event(event_id_t event_id, parameter_t data)
+```
+Triggers the state chart with the event.  
+Passes the parameter to the event handler.  
+For non-void parameter.
+
+---
+
+```cpp
+TObject& get_object()
+const TObject& get_object() const
+```
+Gets the implementation object instance.
+
+---
+
+```cpp
+void set_transition_table(const transition* transition_table_begin,
+                          const transition* transition_table_end)
+```
+Not defined for `state_chart_ct` or `state_chart_ctp`.  
+The table of transitions, defining the relationship between events and state changes; defines option actions and guards.  
+Note: The transition table must have the same scope as the state chart. i.e. It must exist while the state chart exists.
+
+---
+
+```cpp
+void set_state_table(const state* state_table_begin,
+                     const state* state_table_end)
+```
+Not defined for `state_chart_ct` or `state_chart_ctp`.  
+Sets the optional state table defining any on_entry and on_exit for states.  
+Not all states have to have entries in the table. States with no  on_entry and on_exit functionality may be omitted.  
+Note: The state table must have the same scope as the state chart. i.e. It must exist while the state chart exists. 
+
+## Member Types
+
+`transition`
+
+---
+
+**For `etl::state_chart<TImplementation>`**  
+
+```cpp
+transition(const state_id_t current_state_id,
+           const event_id_t event_id,
+           const state_id_t next_state_id,
+           void (TObject::* const action)() = nullptr,
+           bool (TObject::* const guard)()  = nullptr)
+```
+
+```cpp
+transition(const event_id_t event_id,
+           const state_id_t next_state_id,
+           void (TObject::* const action)() = nullptr,
+           bool (TObject::* const guard)()  = nullptr)
+```
+
+---
+
+**For etl::state_chart<TImplementation, TParameter>**  
+```cpp
+transition(const state_id_t current_state_id,
+           const event_id_t event_id,
+           const state_id_t next_state_id,
+           void (TObject::* const action)(data_parameter_type) = nullptr,
+           bool (TObject::* const guard)()  = nullptr)
+```
+
+---
+
+```cpp
+transition(const event_id_t event_id,
+           const state_id_t next_state_id,
+           void (TObject::* const action)(data_parameter_type) = nullptr,
+           bool (TObject::* const guard)()  = nullptr)
+```
+`current_state_id`  
+The state id that the state chart must be in for the event to be processed.  
+If the second constructor form is used then the 'current state' is considered to be don't care.  
+
+`event_id`  
+The event id for this transition.  
+
+`next_state_id`  
+The state id that the state chart will be in after the event.  
+
+`action`  
+An optional pointer to the action that will be called when the transition occurs.  
+
+`guard`  
+An optional pointer to the guard for this transition. The transition will only occur if the guard returns `true`.  
+If the guard returns `false` then the scan of the transition table continues from the next position.
+
+## state
+
+```cpp
+ETL_CONSTEXPR state(const state_id_t state_id_,
+                    void (TObject::* const on_entry)() = ETL_NULLPTR,
+                    void (TObject::* const on_exit)()  = ETL_NULLPTR)
+```
+`state_id`  
+The ID of the state.  
+
+`on_entry`  
+An optional pointer to the function that will be called when a state is entered.  
+
+`on_exit`  
+An optional pointer to the function that will be called when a state is entered.
+
+## Example
+
+```cpp
+class MotorControl : public etl::state_chart<MotorControl>
+{
+  void OnStart();
+  void OnStop();
+  void OnSetSpeed();
+  bool StartGuard();
+
+  static const etl::array<MotorControl::transition, 5> transitionTable;
+};
+
+const etl::array<MotorControl::transition, 5> MotorControl::transitionTable =
+{
+  MotorControl::transition(IDLE,
+                           START,
+                           RUNNING,
+                           &MotorControl::OnStart, 
+                           &MotorControl::StartGuard),
+
+  MotorControl::transition(RUNNING, 
+                           STOP,                                                    
+                           WINDING_DOWN, 
+                           &MotorControl::OnStop),
+
+  MotorControl::transition(WINDING_DOWN,
+                           STOPPED,
+                           IDLE),
+
+  MotorControl::transition(RUNNING,
+                           EMERGENCY_STOP,
+                           IDLE,
+                           &MotorControl::OnStop),
+
+  MotorControl::transition(RUNNING,
+                           SET_SPEED,
+                           RUNNING,
+                           &MotorControl::OnSetSpeed)
+};
+```
+
+## state
+
+```cpp
+state(const state_id_t state_id,
+      void (TObject::* const on_entry)() = nullptr,
+      void (TObject::* const on_exit)()  = nullptr)
+```
+`state_id`  
+The id for this state.  
+
+`on_entry`  
+An optional pointer to the function that will be called when the state chart enters the state.  
+
+`on_exit`  
+An optional pointer to the function that will be called when the state chart exits the state.  
+
+## Example
+
+```cpp
+class MotorControl : public etl::state_chart<MotorControl>
+{
+  void OnExitIdle();
+  void OnEnterStopped();
+  void OnEnterRunning);
+  void OnExitRunning();
+
+  static const etl::array<MotorControl::state, 3> stateTable;
+};
+
+const etl::array<MotorControl::state, 3> MotorControl::stateTable =
+{
+  MotorControl::state(IDLE,    nullptr,                       &MotorControl::OnExitIdle),
+  MotorControl::state(STOPPED, &MotorControl::OnEnterStopped, nullptr),
+  MotorControl::state(RUNNING, &MotorControl::OnEnterRunning, &MotorControl::OnExitRunning)
+};
+```
+
+### Notes
+
+**Order of execution**  
+When an event is processed, the execution occurs in the following order.  
+(Assuming all functions have been declared in the transition and state tables)  
+
+A call to the guard function.  
+A call to the action function.  
+A call to the current state's exit function (if the transition changes the state).  
+A call to the next state's entry function (if the transition changes the state).  
+
+**Usage**  
+The state chart may either used with inheritance or composition.
+
+```cpp
+class Implementation : public etl::state_chart<Implementation>
+
+class Implementation
+{
+   etl::state_chart<Implementation> stateChart;
+};
+```
+
+Use inheritance when the implementation is a state machine.  
+Use composition if the implementation contains a state machine.

docs/timers/_index.md

@@ -1,4 +1,4 @@
 ---
-title: "Frameworks"
+title: "Timers"
 weight: 100
 ---