Changed all the C++ comments to C comments using comment.sh script.
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+83
-83
@@ -42,12 +42,12 @@
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#include "bacdef.h"
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#include "dlmstp.h"
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// The value 255 is used to denote broadcast when used as a
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// destination address but is not allowed as a value for a station.
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/* The value 255 is used to denote broadcast when used as a */
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/* destination address but is not allowed as a value for a station. */
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#define MSTP_BROADCAST_ADDRESS 255
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// MS/TP Frame Type
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// Frame Types 8 through 127 are reserved by ASHRAE.
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/* MS/TP Frame Type */
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/* Frame Types 8 through 127 are reserved by ASHRAE. */
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#define FRAME_TYPE_TOKEN 0
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#define FRAME_TYPE_POLL_FOR_MASTER 1
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#define FRAME_TYPE_REPLY_TO_POLL_FOR_MASTER 2
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@@ -56,16 +56,16 @@
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#define FRAME_TYPE_BACNET_DATA_EXPECTING_REPLY 5
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#define FRAME_TYPE_BACNET_DATA_NOT_EXPECTING_REPLY 6
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#define FRAME_TYPE_REPLY_POSTPONED 7
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// Frame Types 128 through 255: Proprietary Frames
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// These frames are available to vendors as proprietary (non-BACnet) frames.
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// The first two octets of the Data field shall specify the unique vendor
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// identification code, most significant octet first, for the type of
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// vendor-proprietary frame to be conveyed. The length of the data portion
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// of a Proprietary frame shall be in the range of 2 to 501 octets.
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/* Frame Types 128 through 255: Proprietary Frames */
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/* These frames are available to vendors as proprietary (non-BACnet) frames. */
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/* The first two octets of the Data field shall specify the unique vendor */
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/* identification code, most significant octet first, for the type of */
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/* vendor-proprietary frame to be conveyed. The length of the data portion */
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/* of a Proprietary frame shall be in the range of 2 to 501 octets. */
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#define FRAME_TYPE_PROPRIETARY_MIN 128
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#define FRAME_TYPE_PROPRIETARY_MAX 255
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// receive FSM states
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/* receive FSM states */
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typedef enum {
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MSTP_RECEIVE_STATE_IDLE,
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MSTP_RECEIVE_STATE_PREAMBLE,
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@@ -75,7 +75,7 @@ typedef enum {
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MSTP_RECEIVE_STATE_DATA_CRC
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} MSTP_RECEIVE_STATE;
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// master node FSM states
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/* master node FSM states */
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typedef enum {
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MSTP_MASTER_STATE_INITIALIZE,
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MSTP_MASTER_STATE_IDLE,
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@@ -90,115 +90,115 @@ typedef enum {
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struct mstp_port_struct_t {
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MSTP_RECEIVE_STATE receive_state;
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// When a master node is powered up or reset,
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// it shall unconditionally enter the INITIALIZE state.
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/* When a master node is powered up or reset, */
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/* it shall unconditionally enter the INITIALIZE state. */
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MSTP_MASTER_STATE master_state;
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// A Boolean flag set to TRUE by the Receive State Machine
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// if an error is detected during the reception of a frame.
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// Set to FALSE by the main state machine.
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/* A Boolean flag set to TRUE by the Receive State Machine */
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/* if an error is detected during the reception of a frame. */
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/* Set to FALSE by the main state machine. */
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unsigned ReceiveError:1;
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// There is data in the buffer
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/* There is data in the buffer */
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unsigned DataAvailable:1;
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unsigned FramingError:1; // TRUE if we got a framing error
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unsigned FramingError:1; /* TRUE if we got a framing error */
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unsigned ReceivedInvalidFrame:1;
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// A Boolean flag set to TRUE by the Receive State Machine
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// if a valid frame is received.
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// Set to FALSE by the main state machine.
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/* A Boolean flag set to TRUE by the Receive State Machine */
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/* if a valid frame is received. */
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/* Set to FALSE by the main state machine. */
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unsigned ReceivedValidFrame:1;
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// A Boolean flag set to TRUE by the master machine if this node is the
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// only known master node.
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/* A Boolean flag set to TRUE by the master machine if this node is the */
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/* only known master node. */
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unsigned SoleMaster:1;
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// After receiving a frame this value will be TRUE until Tturnaround
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// has expired
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/* After receiving a frame this value will be TRUE until Tturnaround */
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/* has expired */
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unsigned Turn_Around_Waiting:1;
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// stores the latest received data
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/* stores the latest received data */
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uint8_t DataRegister;
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// Used to accumulate the CRC on the data field of a frame.
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/* Used to accumulate the CRC on the data field of a frame. */
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uint16_t DataCRC;
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// Used to store the data length of a received frame.
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/* Used to store the data length of a received frame. */
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unsigned DataLength;
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// Used to store the destination address of a received frame.
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/* Used to store the destination address of a received frame. */
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uint8_t DestinationAddress;
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// Used to count the number of received octets or errors.
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// This is used in the detection of link activity.
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/* Used to count the number of received octets or errors. */
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/* This is used in the detection of link activity. */
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unsigned EventCount;
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// Used to store the frame type of a received frame.
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/* Used to store the frame type of a received frame. */
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uint8_t FrameType;
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// The number of frames sent by this node during a single token hold.
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// When this counter reaches the value Nmax_info_frames, the node must
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// pass the token.
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/* The number of frames sent by this node during a single token hold. */
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/* When this counter reaches the value Nmax_info_frames, the node must */
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/* pass the token. */
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unsigned FrameCount;
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// Used to accumulate the CRC on the header of a frame.
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/* Used to accumulate the CRC on the header of a frame. */
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uint8_t HeaderCRC;
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// Used as an index by the Receive State Machine, up to a maximum value of
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// InputBufferSize.
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/* Used as an index by the Receive State Machine, up to a maximum value of */
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/* InputBufferSize. */
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unsigned Index;
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// An array of octets, used to store octets as they are received.
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// InputBuffer is indexed from 0 to InputBufferSize-1.
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// The maximum size of a frame is 501 octets.
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/* An array of octets, used to store octets as they are received. */
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/* InputBuffer is indexed from 0 to InputBufferSize-1. */
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/* The maximum size of a frame is 501 octets. */
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uint8_t InputBuffer[MAX_MPDU];
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// "Next Station," the MAC address of the node to which This Station passes
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// the token. If the Next_Station is unknown, Next_Station shall be equal to
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// This_Station.
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/* "Next Station," the MAC address of the node to which This Station passes */
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/* the token. If the Next_Station is unknown, Next_Station shall be equal to */
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/* This_Station. */
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uint8_t Next_Station;
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// "Poll Station," the MAC address of the node to which This Station last
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// sent a Poll For Master. This is used during token maintenance.
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/* "Poll Station," the MAC address of the node to which This Station last */
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/* sent a Poll For Master. This is used during token maintenance. */
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uint8_t Poll_Station;
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// A counter of transmission retries used for Token and Poll For Master
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// transmission.
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/* A counter of transmission retries used for Token and Poll For Master */
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/* transmission. */
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unsigned RetryCount;
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// A timer with nominal 5 millisecond resolution used to measure and
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// generate silence on the medium between octets. It is incremented by a
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// timer process and is cleared by the Receive State Machine when activity
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// is detected and by the SendFrame procedure as each octet is transmitted.
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// Since the timer resolution is limited and the timer is not necessarily
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// synchronized to other machine events, a timer value of N will actually
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// denote intervals between N-1 and N
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/* A timer with nominal 5 millisecond resolution used to measure and */
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/* generate silence on the medium between octets. It is incremented by a */
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/* timer process and is cleared by the Receive State Machine when activity */
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/* is detected and by the SendFrame procedure as each octet is transmitted. */
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/* Since the timer resolution is limited and the timer is not necessarily */
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/* synchronized to other machine events, a timer value of N will actually */
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/* denote intervals between N-1 and N */
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unsigned SilenceTimer;
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// A timer used to measure and generate Reply Postponed frames. It is
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// incremented by a timer process and is cleared by the Master Node State
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// Machine when a Data Expecting Reply Answer activity is completed.
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/* A timer used to measure and generate Reply Postponed frames. It is */
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/* incremented by a timer process and is cleared by the Master Node State */
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/* Machine when a Data Expecting Reply Answer activity is completed. */
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unsigned ReplyPostponedTimer;
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// Used to store the Source Address of a received frame.
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/* Used to store the Source Address of a received frame. */
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uint8_t SourceAddress;
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// The number of tokens received by this node. When this counter reaches the
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// value Npoll, the node polls the address range between TS and NS for
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// additional master nodes. TokenCount is set to zero at the end of the
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// polling process.
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/* The number of tokens received by this node. When this counter reaches the */
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/* value Npoll, the node polls the address range between TS and NS for */
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/* additional master nodes. TokenCount is set to zero at the end of the */
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/* polling process. */
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unsigned TokenCount;
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// "This Station," the MAC address of this node. TS is generally read from a
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// hardware DIP switch, or from nonvolatile memory. Valid values for TS are
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// 0 to 254. The value 255 is used to denote broadcast when used as a
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// destination address but is not allowed as a value for TS.
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/* "This Station," the MAC address of this node. TS is generally read from a */
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/* hardware DIP switch, or from nonvolatile memory. Valid values for TS are */
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/* 0 to 254. The value 255 is used to denote broadcast when used as a */
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/* destination address but is not allowed as a value for TS. */
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uint8_t This_Station;
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// This parameter represents the value of the Max_Info_Frames property of
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// the node's Device object. The value of Max_Info_Frames specifies the
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// maximum number of information frames the node may send before it must
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// pass the token. Max_Info_Frames may have different values on different
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// nodes. This may be used to allocate more or less of the available link
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// bandwidth to particular nodes. If Max_Info_Frames is not writable in a
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// node, its value shall be 1.
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/* This parameter represents the value of the Max_Info_Frames property of */
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/* the node's Device object. The value of Max_Info_Frames specifies the */
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/* maximum number of information frames the node may send before it must */
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/* pass the token. Max_Info_Frames may have different values on different */
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/* nodes. This may be used to allocate more or less of the available link */
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/* bandwidth to particular nodes. If Max_Info_Frames is not writable in a */
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/* node, its value shall be 1. */
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unsigned Nmax_info_frames;
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// This parameter represents the value of the Max_Master property of the
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// node's Device object. The value of Max_Master specifies the highest
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// allowable address for master nodes. The value of Max_Master shall be
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// less than or equal to 127. If Max_Master is not writable in a node,
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// its value shall be 127.
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/* This parameter represents the value of the Max_Master property of the */
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/* node's Device object. The value of Max_Master specifies the highest */
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/* allowable address for master nodes. The value of Max_Master shall be */
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/* less than or equal to 127. If Max_Master is not writable in a node, */
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/* its value shall be 127. */
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unsigned Nmax_master;
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};
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#define DEFAULT_MAX_INFO_FRAMES 1
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#define DEFAULT_MAX_MASTER 127
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// The minimum time after the end of the stop bit of the final octet of a
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// received frame before a node may enable its EIA-485 driver: 40 bit times.
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// At 9600 baud, 40 bit times would be about 4.166 milliseconds
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/* The minimum time after the end of the stop bit of the final octet of a */
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/* received frame before a node may enable its EIA-485 driver: 40 bit times. */
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/* At 9600 baud, 40 bit times would be about 4.166 milliseconds */
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#define Tturnaround 40;
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#ifdef __cplusplus
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