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Changed the data type of the MS/TP index for the receiving byte to allow an APDU of 480 bytes.

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This commit is contained in:
skarg
2009-02-16 18:53:15 +00:00
parent e35cabd91d
commit a42b63d5c7
4 changed files with 70 additions and 70 deletions
Download Patch File Download Diff File Expand all files Collapse all files
bacnet-stack/include/mstp.h
+1 -1
View File
@@ -165,7 +165,7 @@ struct mstp_port_struct_t {
uint8_t HeaderCRCActual; uint8_t HeaderCRCActual;
/* Used as an index by the Receive State Machine, up to a maximum value of */ /* Used as an index by the Receive State Machine, up to a maximum value of */
/* InputBufferSize. */ /* InputBufferSize. */
unsigned Index; uint16_t Index;
/* An array of octets, used to store octets as they are received. */ /* An array of octets, used to store octets as they are received. */
/* InputBuffer is indexed from 0 to InputBufferSize-1. */ /* InputBuffer is indexed from 0 to InputBufferSize-1. */
/* The maximum size of a frame is 501 octets. */ /* The maximum size of a frame is 501 octets. */
bacnet-stack/ports/at91sam7s/dlmstp.c
+41 -41
View File
@@ -45,7 +45,7 @@
#include "bacaddr.h" #include "bacaddr.h"
/* This file has been customized for use with small microprocessors */ /* This file has been customized for use with small microprocessors */
/* Assumptions: /* Assumptions:
Only one MS/TP datalink layer Only one MS/TP datalink layer
*/ */
#include "board.h" #include "board.h"
@@ -121,7 +121,7 @@ static struct mstp_flag_t {
/* A Boolean flag set TRUE by the datalink transmit if a /* A Boolean flag set TRUE by the datalink transmit if a
pending packet is DataExpectingReply */ pending packet is DataExpectingReply */
unsigned TransmitPacketDER:1; unsigned TransmitPacketDER:1;
/* A Boolean flag set TRUE by the datalink if a /* A Boolean flag set TRUE by the datalink if a
packet has been received, but not processed. */ packet has been received, but not processed. */
unsigned ReceivePacketPending:1; unsigned ReceivePacketPending:1;
} MSTP_Flag; } MSTP_Flag;
@@ -287,8 +287,8 @@ static bool dlmstp_compare_data_expecting_reply(
uint8_t dest_address) uint8_t dest_address)
{ {
uint16_t offset; uint16_t offset;
/* One way to check the message is to compare NPDU /* One way to check the message is to compare NPDU
src, dest, along with the APDU type, invoke id. src, dest, along with the APDU type, invoke id.
Seems a bit overkill */ Seems a bit overkill */
struct DER_compare_t { struct DER_compare_t {
BACNET_NPDU_DATA npdu_data; BACNET_NPDU_DATA npdu_data;
@@ -327,7 +327,7 @@ static bool dlmstp_compare_data_expecting_reply(
if (reply.npdu_data.network_layer_message) { if (reply.npdu_data.network_layer_message) {
return false; return false;
} }
/* reply could be a lot of things: /* reply could be a lot of things:
confirmed, simple ack, abort, reject, error */ confirmed, simple ack, abort, reject, error */
reply.pdu_type = reply_pdu[offset] & 0xF0; reply.pdu_type = reply_pdu[offset] & 0xF0;
switch (reply.pdu_type) { switch (reply.pdu_type) {
@@ -451,13 +451,13 @@ static void MSTP_Receive_Frame_FSM(
static uint16_t DataCRC = 0; static uint16_t DataCRC = 0;
/* Used to accumulate the CRC on the header of a frame. */ /* Used to accumulate the CRC on the header of a frame. */
static uint8_t HeaderCRC = 0; static uint8_t HeaderCRC = 0;
/* Used as an index by the Receive State Machine, /* Used as an index by the Receive State Machine,
up to a maximum value of the MPDU */ up to a maximum value of the MPDU */
static uint8_t Index = 0; static uint16_t Index = 0;
switch (Receive_State) { switch (Receive_State) {
case MSTP_RECEIVE_STATE_IDLE: case MSTP_RECEIVE_STATE_IDLE:
/* In the IDLE state, the node waits /* In the IDLE state, the node waits
for the beginning of a frame. */ for the beginning of a frame. */
if (RS485_ReceiveError()) { if (RS485_ReceiveError()) {
/* EatAnError */ /* EatAnError */
@@ -474,7 +474,7 @@ static void MSTP_Receive_Frame_FSM(
} }
break; break;
case MSTP_RECEIVE_STATE_PREAMBLE: case MSTP_RECEIVE_STATE_PREAMBLE:
/* In the PREAMBLE state, the node waits for the /* In the PREAMBLE state, the node waits for the
second octet of the preamble. */ second octet of the preamble. */
if (Timer_Silence() > Tframe_abort) { if (Timer_Silence() > Tframe_abort) {
/* Timeout */ /* Timeout */
@@ -508,11 +508,11 @@ static void MSTP_Receive_Frame_FSM(
} }
break; break;
case MSTP_RECEIVE_STATE_HEADER: case MSTP_RECEIVE_STATE_HEADER:
/* In the HEADER state, the node waits /* In the HEADER state, the node waits
for the fixed message header. */ for the fixed message header. */
if (Timer_Silence() > Tframe_abort) { if (Timer_Silence() > Tframe_abort) {
/* Timeout */ /* Timeout */
/* indicate that an error has occurred /* indicate that an error has occurred
during the reception of a frame */ during the reception of a frame */
MSTP_Flag.ReceivedInvalidFrame = true; MSTP_Flag.ReceivedInvalidFrame = true;
/* wait for the start of a frame. */ /* wait for the start of a frame. */
@@ -521,7 +521,7 @@ static void MSTP_Receive_Frame_FSM(
/* Error */ /* Error */
Timer_Silence_Reset(); Timer_Silence_Reset();
INCREMENT_AND_LIMIT_UINT8(EventCount); INCREMENT_AND_LIMIT_UINT8(EventCount);
/* indicate that an error has occurred /* indicate that an error has occurred
during the reception of a frame */ during the reception of a frame */
MSTP_Flag.ReceivedInvalidFrame = true; MSTP_Flag.ReceivedInvalidFrame = true;
/* wait for the start of a frame. */ /* wait for the start of a frame. */
@@ -557,7 +557,7 @@ static void MSTP_Receive_Frame_FSM(
} else if (Index == 5) { } else if (Index == 5) {
/* HeaderCRC */ /* HeaderCRC */
HeaderCRC = CRC_Calc_Header(DataRegister, HeaderCRC); HeaderCRC = CRC_Calc_Header(DataRegister, HeaderCRC);
/* In the HEADER_CRC state, the node validates the CRC /* In the HEADER_CRC state, the node validates the CRC
on the fixed message header. */ on the fixed message header. */
if (HeaderCRC != 0x55) { if (HeaderCRC != 0x55) {
/* BadCRC */ /* BadCRC */
@@ -569,7 +569,7 @@ static void MSTP_Receive_Frame_FSM(
} else { } else {
/* Note: proposed change to BACnet MSTP state machine! /* Note: proposed change to BACnet MSTP state machine!
If we don't decode data that is not for us, we could If we don't decode data that is not for us, we could
get confused about the start if the Preamble 55 FF get confused about the start if the Preamble 55 FF
is part of the data. */ is part of the data. */
if ((DataLength) && (DataLength <= InputBufferSize)) { if ((DataLength) && (DataLength <= InputBufferSize)) {
/* Data */ /* Data */
@@ -584,7 +584,7 @@ static void MSTP_Receive_Frame_FSM(
(DestinationAddress == (DestinationAddress ==
MSTP_BROADCAST_ADDRESS)) { MSTP_BROADCAST_ADDRESS)) {
/* ForUs */ /* ForUs */
/* indicate that a frame with /* indicate that a frame with
no data has been received */ no data has been received */
MSTP_Flag.ReceivedValidFrame = true; MSTP_Flag.ReceivedValidFrame = true;
} else { } else {
@@ -610,11 +610,11 @@ static void MSTP_Receive_Frame_FSM(
} }
break; break;
case MSTP_RECEIVE_STATE_DATA: case MSTP_RECEIVE_STATE_DATA:
/* In the DATA state, the node waits /* In the DATA state, the node waits
for the data portion of a frame. */ for the data portion of a frame. */
if (Timer_Silence() > Tframe_abort) { if (Timer_Silence() > Tframe_abort) {
/* Timeout */ /* Timeout */
/* indicate that an error has occurred /* indicate that an error has occurred
during the reception of a frame */ during the reception of a frame */
MSTP_Flag.ReceivedInvalidFrame = true; MSTP_Flag.ReceivedInvalidFrame = true;
/* wait for the start of the next frame. */ /* wait for the start of the next frame. */
@@ -623,7 +623,7 @@ static void MSTP_Receive_Frame_FSM(
/* Error */ /* Error */
Timer_Silence_Reset(); Timer_Silence_Reset();
INCREMENT_AND_LIMIT_UINT8(EventCount); INCREMENT_AND_LIMIT_UINT8(EventCount);
/* indicate that an error has occurred during /* indicate that an error has occurred during
the reception of a frame */ the reception of a frame */
MSTP_Flag.ReceivedInvalidFrame = true; MSTP_Flag.ReceivedInvalidFrame = true;
/* wait for the start of the next frame. */ /* wait for the start of the next frame. */
@@ -649,7 +649,7 @@ static void MSTP_Receive_Frame_FSM(
if ((DestinationAddress == This_Station) || if ((DestinationAddress == This_Station) ||
(DestinationAddress == MSTP_BROADCAST_ADDRESS)) { (DestinationAddress == MSTP_BROADCAST_ADDRESS)) {
/* ForUs */ /* ForUs */
/* indicate that a frame with no data /* indicate that a frame with no data
has been received */ has been received */
MSTP_Flag.ReceivedValidFrame = true; MSTP_Flag.ReceivedValidFrame = true;
} }
@@ -677,8 +677,8 @@ static bool MSTP_Master_Node_FSM(
/* When this counter reaches the value Nmax_info_frames, the node must */ /* When this counter reaches the value Nmax_info_frames, the node must */
/* pass the token. */ /* pass the token. */
static uint8_t FrameCount; static uint8_t FrameCount;
/* "Next Station," the MAC address of the node to which This Station /* "Next Station," the MAC address of the node to which This Station
passes the token. If the Next_Station is unknown, Next_Station shall passes the token. If the Next_Station is unknown, Next_Station shall
be equal to This_Station. */ be equal to This_Station. */
static uint8_t Next_Station; static uint8_t Next_Station;
/* "Poll Station," the MAC address of the node to which This Station last */ /* "Poll Station," the MAC address of the node to which This Station last */
@@ -772,7 +772,7 @@ static bool MSTP_Master_Node_FSM(
default: default:
break; break;
} }
/* For DATA_EXPECTING_REPLY, we will keep the Rx Frame for /* For DATA_EXPECTING_REPLY, we will keep the Rx Frame for
reference, and the flag will be cleared in the next state */ reference, and the flag will be cleared in the next state */
if (Master_State != MSTP_MASTER_STATE_ANSWER_DATA_REQUEST) { if (Master_State != MSTP_MASTER_STATE_ANSWER_DATA_REQUEST) {
MSTP_Flag.ReceivedValidFrame = false; MSTP_Flag.ReceivedValidFrame = false;
@@ -858,7 +858,7 @@ static bool MSTP_Master_Node_FSM(
/* ReceivedReply */ /* ReceivedReply */
/* or a proprietary type that indicates /* or a proprietary type that indicates
a reply */ a reply */
/* indicate successful reception to /* indicate successful reception to
the higher layers */ the higher layers */
MSTP_Flag.ReceivePacketPending = true; MSTP_Flag.ReceivePacketPending = true;
Master_State = Master_State =
@@ -901,7 +901,7 @@ static bool MSTP_Master_Node_FSM(
(Next_Station != next_this_station)) { (Next_Station != next_this_station)) {
/* SoleMaster */ /* SoleMaster */
/* there are no other known master nodes to */ /* there are no other known master nodes to */
/* which the token may be sent /* which the token may be sent
(true master-slave operation). */ (true master-slave operation). */
FrameCount = 0; FrameCount = 0;
TokenCount++; TokenCount++;
@@ -910,11 +910,11 @@ static bool MSTP_Master_Node_FSM(
} else { } else {
/* SendToken */ /* SendToken */
/* Npoll changed in Errata SSPC-135-2004 */ /* Npoll changed in Errata SSPC-135-2004 */
/* The comparison of NS and TS+1 /* The comparison of NS and TS+1
eliminates the Poll For Master eliminates the Poll For Master
if there are no addresses between if there are no addresses between
TS and NS, since there is no TS and NS, since there is no
address at which a new master node address at which a new master node
may be found in that case. */ may be found in that case. */
TokenCount++; TokenCount++;
/* transmit a Token frame to NS */ /* transmit a Token frame to NS */
@@ -963,7 +963,7 @@ static bool MSTP_Master_Node_FSM(
if (Timer_Silence() <= Tusage_timeout) { if (Timer_Silence() <= Tusage_timeout) {
if (EventCount > Nmin_octets) { if (EventCount > Nmin_octets) {
/* SawTokenUser */ /* SawTokenUser */
/* Assume that a frame has been sent by /* Assume that a frame has been sent by
the new token user. */ the new token user. */
/* Enter the IDLE state to process the frame. */ /* Enter the IDLE state to process the frame. */
Master_State = MSTP_MASTER_STATE_IDLE; Master_State = MSTP_MASTER_STATE_IDLE;
@@ -996,10 +996,10 @@ static bool MSTP_Master_Node_FSM(
} }
} }
break; break;
/* The NO_TOKEN state is entered if Timer_Silence() /* The NO_TOKEN state is entered if Timer_Silence()
becomes greater than Tno_token, indicating that becomes greater than Tno_token, indicating that
there has been no network activity for that period there has been no network activity for that period
of time. The timeout is continued to determine of time. The timeout is continued to determine
whether or not this node may create a token. */ whether or not this node may create a token. */
case MSTP_MASTER_STATE_NO_TOKEN: case MSTP_MASTER_STATE_NO_TOKEN:
my_timeout = Tno_token + (Tslot * This_Station); my_timeout = Tno_token + (Tslot * This_Station);
@@ -1007,7 +1007,7 @@ static bool MSTP_Master_Node_FSM(
if (EventCount > Nmin_octets) { if (EventCount > Nmin_octets) {
/* SawFrame */ /* SawFrame */
/* Some other node exists at a lower address. */ /* Some other node exists at a lower address. */
/* Enter the IDLE state to receive and /* Enter the IDLE state to receive and
process the incoming frame. */ process the incoming frame. */
Master_State = MSTP_MASTER_STATE_IDLE; Master_State = MSTP_MASTER_STATE_IDLE;
transition_now = true; transition_now = true;
@@ -1027,7 +1027,7 @@ static bool MSTP_Master_Node_FSM(
RetryCount = 0; RetryCount = 0;
TokenCount = 0; TokenCount = 0;
/* EventCount = 0; removed Addendum 135-2004d-8 */ /* EventCount = 0; removed Addendum 135-2004d-8 */
/* enter the POLL_FOR_MASTER state /* enter the POLL_FOR_MASTER state
to find a new successor to TS. */ to find a new successor to TS. */
Master_State = MSTP_MASTER_STATE_POLL_FOR_MASTER; Master_State = MSTP_MASTER_STATE_POLL_FOR_MASTER;
} }
@@ -1093,7 +1093,7 @@ static bool MSTP_Master_Node_FSM(
/* Re-enter the current state. */ /* Re-enter the current state. */
} else { } else {
/* DeclareSoleMaster */ /* DeclareSoleMaster */
/* to indicate that this station /* to indicate that this station
is the only master */ is the only master */
MSTP_Flag.SoleMaster = true; MSTP_Flag.SoleMaster = true;
FrameCount = 0; FrameCount = 0;
@@ -1201,7 +1201,7 @@ uint16_t dlmstp_receive(
MSTP_Receive_Frame_FSM(); MSTP_Receive_Frame_FSM();
if (MSTP_Flag.ReceivedValidFrame || MSTP_Flag.ReceivedInvalidFrame) if (MSTP_Flag.ReceivedValidFrame || MSTP_Flag.ReceivedInvalidFrame)
break; break;
/* if we are not idle, then we are /* if we are not idle, then we are
receiving a frame or timing out */ receiving a frame or timing out */
if (Receive_State == MSTP_RECEIVE_STATE_IDLE) if (Receive_State == MSTP_RECEIVE_STATE_IDLE)
break; break;
@@ -1233,7 +1233,7 @@ void dlmstp_set_mac_address(
This_Station = mac_address; This_Station = mac_address;
/* FIXME: implement your data storage */ /* FIXME: implement your data storage */
/* I2C_Write_Byte( /* I2C_Write_Byte(
EEPROM_DEVICE_ADDRESS, EEPROM_DEVICE_ADDRESS,
mac_address, mac_address,
EEPROM_MSTP_MAC_ADDR); */ EEPROM_MSTP_MAC_ADDR); */
if (mac_address > Nmax_master) if (mac_address > Nmax_master)
@@ -1262,8 +1262,8 @@ void dlmstp_set_max_info_frames(
if (max_info_frames >= 1) { if (max_info_frames >= 1) {
Nmax_info_frames = max_info_frames; Nmax_info_frames = max_info_frames;
/* FIXME: implement your data storage */ /* FIXME: implement your data storage */
/* I2C_Write_Byte( /* I2C_Write_Byte(
EEPROM_DEVICE_ADDRESS, EEPROM_DEVICE_ADDRESS,
(uint8_t)max_info_frames, (uint8_t)max_info_frames,
EEPROM_MSTP_MAX_INFO_FRAMES_ADDR); */ EEPROM_MSTP_MAX_INFO_FRAMES_ADDR); */
} }
@@ -1290,7 +1290,7 @@ void dlmstp_set_max_master(
Nmax_master = max_master; Nmax_master = max_master;
/* FIXME: implement your data storage */ /* FIXME: implement your data storage */
/* I2C_Write_Byte( /* I2C_Write_Byte(
EEPROM_DEVICE_ADDRESS, EEPROM_DEVICE_ADDRESS,
max_master, max_master,
EEPROM_MSTP_MAX_MASTER_ADDR); */ EEPROM_MSTP_MAX_MASTER_ADDR); */
} }
bacnet-stack/ports/atmega168/dlmstp.c
+16 -16
View File
@@ -48,7 +48,7 @@
#include "txbuf.h" #include "txbuf.h"
/* This file has been customized for use with small microprocessors */ /* This file has been customized for use with small microprocessors */
/* Assumptions: /* Assumptions:
Only one MS/TP datalink layer Only one MS/TP datalink layer
*/ */
#include "hardware.h" #include "hardware.h"
@@ -124,7 +124,7 @@ static struct mstp_flag_t {
/* A Boolean flag set TRUE by the datalink transmit if a /* A Boolean flag set TRUE by the datalink transmit if a
pending packet is DataExpectingReply */ pending packet is DataExpectingReply */
unsigned TransmitPacketDER:1; unsigned TransmitPacketDER:1;
/* A Boolean flag set TRUE by the datalink if a /* A Boolean flag set TRUE by the datalink if a
packet has been received, but not processed. */ packet has been received, but not processed. */
unsigned ReceivePacketPending:1; unsigned ReceivePacketPending:1;
} MSTP_Flag; } MSTP_Flag;
@@ -366,9 +366,9 @@ static void MSTP_Receive_Frame_FSM(
static uint16_t DataCRC = 0; static uint16_t DataCRC = 0;
/* Used to accumulate the CRC on the header of a frame. */ /* Used to accumulate the CRC on the header of a frame. */
static uint8_t HeaderCRC = 0; static uint8_t HeaderCRC = 0;
/* Used as an index by the Receive State Machine, /* Used as an index by the Receive State Machine,
up to a maximum value of the MPDU */ up to a maximum value of the MPDU */
static uint8_t Index = 0; static uint16_t Index = 0;
switch (Receive_State) { switch (Receive_State) {
case MSTP_RECEIVE_STATE_IDLE: case MSTP_RECEIVE_STATE_IDLE:
@@ -388,7 +388,7 @@ static void MSTP_Receive_Frame_FSM(
} }
break; break;
case MSTP_RECEIVE_STATE_PREAMBLE: case MSTP_RECEIVE_STATE_PREAMBLE:
/* In the PREAMBLE state, the node waits for the /* In the PREAMBLE state, the node waits for the
second octet of the preamble. */ second octet of the preamble. */
if (Timer_Silence() > Tframe_abort) { if (Timer_Silence() > Tframe_abort) {
/* Timeout */ /* Timeout */
@@ -468,7 +468,7 @@ static void MSTP_Receive_Frame_FSM(
} else if (Index == 5) { } else if (Index == 5) {
/* HeaderCRC */ /* HeaderCRC */
HeaderCRC = CRC_Calc_Header(DataRegister, HeaderCRC); HeaderCRC = CRC_Calc_Header(DataRegister, HeaderCRC);
/* In the HEADER_CRC state, the node validates the CRC /* In the HEADER_CRC state, the node validates the CRC
on the fixed message header. */ on the fixed message header. */
if (HeaderCRC != 0x55) { if (HeaderCRC != 0x55) {
/* BadCRC */ /* BadCRC */
@@ -480,7 +480,7 @@ static void MSTP_Receive_Frame_FSM(
} else { } else {
/* Note: proposed change to BACnet MSTP state machine! /* Note: proposed change to BACnet MSTP state machine!
If we don't decode data that is not for us, we could If we don't decode data that is not for us, we could
get confused about the start if the Preamble 55 FF get confused about the start if the Preamble 55 FF
is part of the data. */ is part of the data. */
if ((DataLength) && (DataLength <= InputBufferSize)) { if ((DataLength) && (DataLength <= InputBufferSize)) {
/* Data */ /* Data */
@@ -495,7 +495,7 @@ static void MSTP_Receive_Frame_FSM(
(DestinationAddress == (DestinationAddress ==
MSTP_BROADCAST_ADDRESS)) { MSTP_BROADCAST_ADDRESS)) {
/* ForUs */ /* ForUs */
/* indicate that a frame with /* indicate that a frame with
no data has been received */ no data has been received */
MSTP_Flag.ReceivedValidFrame = true; MSTP_Flag.ReceivedValidFrame = true;
} else { } else {
@@ -532,7 +532,7 @@ static void MSTP_Receive_Frame_FSM(
/* Error */ /* Error */
Timer_Silence_Reset(); Timer_Silence_Reset();
INCREMENT_AND_LIMIT_UINT8(EventCount); INCREMENT_AND_LIMIT_UINT8(EventCount);
/* indicate that an error has occurred during /* indicate that an error has occurred during
the reception of a frame */ the reception of a frame */
MSTP_Flag.ReceivedInvalidFrame = true; MSTP_Flag.ReceivedInvalidFrame = true;
/* wait for the start of the next frame. */ /* wait for the start of the next frame. */
@@ -558,7 +558,7 @@ static void MSTP_Receive_Frame_FSM(
if ((DestinationAddress == This_Station) || if ((DestinationAddress == This_Station) ||
(DestinationAddress == MSTP_BROADCAST_ADDRESS)) { (DestinationAddress == MSTP_BROADCAST_ADDRESS)) {
/* ForUs */ /* ForUs */
/* indicate that a frame with no data /* indicate that a frame with no data
has been received */ has been received */
MSTP_Flag.ReceivedValidFrame = true; MSTP_Flag.ReceivedValidFrame = true;
} }
@@ -680,7 +680,7 @@ static bool MSTP_Master_Node_FSM(
default: default:
break; break;
} }
/* For DATA_EXPECTING_REPLY, we will keep the Rx Frame for /* For DATA_EXPECTING_REPLY, we will keep the Rx Frame for
reference, and the flag will be cleared in the next state */ reference, and the flag will be cleared in the next state */
if (Master_State != MSTP_MASTER_STATE_ANSWER_DATA_REQUEST) { if (Master_State != MSTP_MASTER_STATE_ANSWER_DATA_REQUEST) {
MSTP_Flag.ReceivedValidFrame = false; MSTP_Flag.ReceivedValidFrame = false;
@@ -1068,7 +1068,7 @@ uint16_t dlmstp_receive(
MSTP_Receive_Frame_FSM(); MSTP_Receive_Frame_FSM();
if (MSTP_Flag.ReceivedValidFrame || MSTP_Flag.ReceivedInvalidFrame) if (MSTP_Flag.ReceivedValidFrame || MSTP_Flag.ReceivedInvalidFrame)
break; break;
/* if we are not idle, then we are /* if we are not idle, then we are
receiving a frame or timing out */ receiving a frame or timing out */
if (Receive_State == MSTP_RECEIVE_STATE_IDLE) if (Receive_State == MSTP_RECEIVE_STATE_IDLE)
break; break;
@@ -1100,7 +1100,7 @@ void dlmstp_set_mac_address(
This_Station = mac_address; This_Station = mac_address;
/* FIXME: implement your data storage */ /* FIXME: implement your data storage */
/* I2C_Write_Byte( /* I2C_Write_Byte(
EEPROM_DEVICE_ADDRESS, EEPROM_DEVICE_ADDRESS,
mac_address, mac_address,
EEPROM_MSTP_MAC_ADDR); */ EEPROM_MSTP_MAC_ADDR); */
if (mac_address > Nmax_master) if (mac_address > Nmax_master)
@@ -1129,8 +1129,8 @@ void dlmstp_set_max_info_frames(
if (max_info_frames >= 1) { if (max_info_frames >= 1) {
Nmax_info_frames = max_info_frames; Nmax_info_frames = max_info_frames;
/* FIXME: implement your data storage */ /* FIXME: implement your data storage */
/* I2C_Write_Byte( /* I2C_Write_Byte(
EEPROM_DEVICE_ADDRESS, EEPROM_DEVICE_ADDRESS,
(uint8_t)max_info_frames, (uint8_t)max_info_frames,
EEPROM_MSTP_MAX_INFO_FRAMES_ADDR); */ EEPROM_MSTP_MAX_INFO_FRAMES_ADDR); */
} }
@@ -1157,7 +1157,7 @@ void dlmstp_set_max_master(
Nmax_master = max_master; Nmax_master = max_master;
/* FIXME: implement your data storage */ /* FIXME: implement your data storage */
/* I2C_Write_Byte( /* I2C_Write_Byte(
EEPROM_DEVICE_ADDRESS, EEPROM_DEVICE_ADDRESS,
max_master, max_master,
EEPROM_MSTP_MAX_MASTER_ADDR); */ EEPROM_MSTP_MAX_MASTER_ADDR); */
} }
bacnet-stack/ports/atmega8/dlmstp.c
+12 -12
View File
@@ -46,7 +46,7 @@
#include "txbuf.h" #include "txbuf.h"
/* This file has been customized for use with small microprocessors */ /* This file has been customized for use with small microprocessors */
/* Assumptions: /* Assumptions:
Only one slave node MS/TP datalink layer Only one slave node MS/TP datalink layer
*/ */
#include "hardware.h" #include "hardware.h"
@@ -99,7 +99,7 @@ static struct mstp_flag_t {
/* A Boolean flag set TRUE by the datalink transmit if a /* A Boolean flag set TRUE by the datalink transmit if a
pending packet is DataExpectingReply */ pending packet is DataExpectingReply */
unsigned TransmitPacketDER:1; unsigned TransmitPacketDER:1;
/* A Boolean flag set TRUE by the datalink if a /* A Boolean flag set TRUE by the datalink if a
packet has been received, but not processed. */ packet has been received, but not processed. */
unsigned ReceivePacketPending:1; unsigned ReceivePacketPending:1;
} MSTP_Flag; } MSTP_Flag;
@@ -401,9 +401,9 @@ static void MSTP_Receive_Frame_FSM(
static uint16_t DataCRC = 0; static uint16_t DataCRC = 0;
/* Used to accumulate the CRC on the header of a frame. */ /* Used to accumulate the CRC on the header of a frame. */
static uint8_t HeaderCRC = 0; static uint8_t HeaderCRC = 0;
/* Used as an index by the Receive State Machine, /* Used as an index by the Receive State Machine,
up to a maximum value of the MPDU */ up to a maximum value of the MPDU */
static uint8_t Index = 0; static uint16_t Index = 0;
switch (Receive_State) { switch (Receive_State) {
case MSTP_RECEIVE_STATE_IDLE: case MSTP_RECEIVE_STATE_IDLE:
@@ -421,7 +421,7 @@ static void MSTP_Receive_Frame_FSM(
} }
break; break;
case MSTP_RECEIVE_STATE_PREAMBLE: case MSTP_RECEIVE_STATE_PREAMBLE:
/* In the PREAMBLE state, the node waits for the /* In the PREAMBLE state, the node waits for the
second octet of the preamble. */ second octet of the preamble. */
if (timer_silence_elapsed(Tframe_abort)) { if (timer_silence_elapsed(Tframe_abort)) {
/* Timeout */ /* Timeout */
@@ -497,7 +497,7 @@ static void MSTP_Receive_Frame_FSM(
} else if (Index == 5) { } else if (Index == 5) {
/* HeaderCRC */ /* HeaderCRC */
HeaderCRC = CRC_Calc_Header(DataRegister, HeaderCRC); HeaderCRC = CRC_Calc_Header(DataRegister, HeaderCRC);
/* In the HEADER_CRC state, the node validates the CRC /* In the HEADER_CRC state, the node validates the CRC
on the fixed message header. */ on the fixed message header. */
if (HeaderCRC != 0x55) { if (HeaderCRC != 0x55) {
/* BadCRC */ /* BadCRC */
@@ -509,7 +509,7 @@ static void MSTP_Receive_Frame_FSM(
} else { } else {
/* Note: proposed change to BACnet MSTP state machine! /* Note: proposed change to BACnet MSTP state machine!
If we don't decode data that is not for us, we could If we don't decode data that is not for us, we could
get confused about the start if the Preamble 55 FF get confused about the start if the Preamble 55 FF
is part of the data. */ is part of the data. */
if ((DataLength) && (DataLength <= InputBufferSize)) { if ((DataLength) && (DataLength <= InputBufferSize)) {
/* Data */ /* Data */
@@ -524,7 +524,7 @@ static void MSTP_Receive_Frame_FSM(
(DestinationAddress == (DestinationAddress ==
MSTP_BROADCAST_ADDRESS)) { MSTP_BROADCAST_ADDRESS)) {
/* ForUs */ /* ForUs */
/* indicate that a frame with /* indicate that a frame with
no data has been received */ no data has been received */
MSTP_Flag.ReceivedValidFrame = true; MSTP_Flag.ReceivedValidFrame = true;
} else { } else {
@@ -560,7 +560,7 @@ static void MSTP_Receive_Frame_FSM(
} else if (RS485_ReceiveError()) { } else if (RS485_ReceiveError()) {
/* Error */ /* Error */
timer_silence_reset(); timer_silence_reset();
/* indicate that an error has occurred during /* indicate that an error has occurred during
the reception of a frame */ the reception of a frame */
MSTP_Flag.ReceivedInvalidFrame = true; MSTP_Flag.ReceivedInvalidFrame = true;
/* wait for the start of the next frame. */ /* wait for the start of the next frame. */
@@ -585,7 +585,7 @@ static void MSTP_Receive_Frame_FSM(
if ((DestinationAddress == This_Station) || if ((DestinationAddress == This_Station) ||
(DestinationAddress == MSTP_BROADCAST_ADDRESS)) { (DestinationAddress == MSTP_BROADCAST_ADDRESS)) {
/* ForUs */ /* ForUs */
/* indicate that a frame with no data /* indicate that a frame with no data
has been received */ has been received */
MSTP_Flag.ReceivedValidFrame = true; MSTP_Flag.ReceivedValidFrame = true;
} }
@@ -691,7 +691,7 @@ uint16_t dlmstp_receive(
MSTP_Receive_Frame_FSM(); MSTP_Receive_Frame_FSM();
if (MSTP_Flag.ReceivedValidFrame || MSTP_Flag.ReceivedInvalidFrame) if (MSTP_Flag.ReceivedValidFrame || MSTP_Flag.ReceivedInvalidFrame)
break; break;
/* if we are not idle, then we are /* if we are not idle, then we are
receiving a frame or timing out */ receiving a frame or timing out */
if (Receive_State == MSTP_RECEIVE_STATE_IDLE) if (Receive_State == MSTP_RECEIVE_STATE_IDLE)
break; break;
@@ -721,7 +721,7 @@ void dlmstp_set_mac_address(
This_Station = mac_address; This_Station = mac_address;
/* FIXME: implement your data storage */ /* FIXME: implement your data storage */
/* I2C_Write_Byte( /* I2C_Write_Byte(
EEPROM_DEVICE_ADDRESS, EEPROM_DEVICE_ADDRESS,
mac_address, mac_address,
EEPROM_MSTP_MAC_ADDR); */ EEPROM_MSTP_MAC_ADDR); */
} }