NMT Master
[Network Management]

Collaboration diagram for NMT Master:

NMT master provides mechanisms that control and monitor the state of nodes and their behavior in the network. More...

Functions
UNS8	masterSendNMTstateChange (CO_Data *d, UNS8 nodeId, UNS8 cs)
	Transmit a NMT message on the network to the slave whose nodeId is node ID.
UNS8	masterSendNMTnodeguard (CO_Data *d, UNS8 nodeId)
	Transmit a NodeGuard message on the network to the slave whose nodeId is node ID.
void	masterRequestNodeState (CO_Data *d, UNS8 nodeId)
	Ask the state of the slave node whose nodeId is node Id.

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Detailed Description

NMT master provides mechanisms that control and monitor the state of nodes and their behavior in the network.

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Function Documentation

void masterRequestNodeState	(	CO_Data *	d,
		UNS8	nodeId
	)

Ask the state of the slave node whose nodeId is node Id.

To ask states of all nodes on the network (NMT broadcast), nodeId must be equal to 0

Parameters:

	*d	Pointer to a CAN object data structure
	nodeId	Id of the slave node
	d
	nodeId

Definition at line 92 of file nmtMaster.c.

References masterSendNMTnodeguard(), and struct_CO_Data::NMTable.

Here is the call graph for this function:

UNS8 masterSendNMTnodeguard	(	CO_Data *	d,
		UNS8	nodeId
	)

Transmit a NodeGuard message on the network to the slave whose nodeId is node ID.

Parameters:

	*d	Pointer to a CAN object data structure
	nodeId	Id of the slave node

Returns:

• 0 is returned if the NodeGuard message was send.
• 1 is returned if an error occurs.

Parameters:

	d
	nodeId

Returns:

Definition at line 71 of file nmtMaster.c.

References struct_CO_Data::canHandle, Message::cob_id, Message::len, and Message::rtr.

Referenced by masterRequestNodeState().

UNS8 masterSendNMTstateChange	(	CO_Data *	d,
		UNS8	Node_ID,
		UNS8	cs
	)

Transmit a NMT message on the network to the slave whose nodeId is node ID.

Parameters:

	*d	Pointer to a CAN object data structure
	nodeId	Id of the slave node
	cs	The order of state changement

Allowed states :

• cs = NMT_Start_Node // Put the node in operational mode
• cs = NMT_Stop_Node // Put the node in stopped mode
• cs = NMT_Enter_PreOperational // Put the node in pre_operational mode
• cs = NMT_Reset_Node // Put the node in initialization mode
• cs = NMT_Reset_Comunication // Put the node in initialization mode

The mode is changed according to the slave state machine mode :

• initialisation ---> pre-operational (Automatic transition)
• pre-operational <--> operational
• pre-operational <--> stopped
• pre-operational, operational, stopped -> initialisation
  
  

  Returns:

  errorcode

  • 0 if the NMT message was send
  • 1 if an error occurs

  Parameters:

  	d
  	Node_ID
  	cs

  Returns:

Definition at line 46 of file nmtMaster.c.

References struct_CO_Data::canHandle, Message::cob_id, Message::data, Message::len, and Message::rtr.