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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
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bacnet-stack/ports/atmega8/dlmstp.c
+12 -12
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@@ -46,7 +46,7 @@
#include "txbuf.h"
/* This file has been customized for use with small microprocessors */
/* Assumptions:
/* Assumptions:
Only one slave node MS/TP datalink layer
*/
#include "hardware.h"
@@ -99,7 +99,7 @@ static struct mstp_flag_t {
/* A Boolean flag set TRUE by the datalink transmit if a
pending packet is DataExpectingReply */
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. */
unsigned ReceivePacketPending:1;
} MSTP_Flag;
@@ -401,9 +401,9 @@ static void MSTP_Receive_Frame_FSM(
static uint16_t DataCRC = 0;
/* Used to accumulate the CRC on the header of a frame. */
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 */
static uint8_t Index = 0;
static uint16_t Index = 0;
switch (Receive_State) {
case MSTP_RECEIVE_STATE_IDLE:
@@ -421,7 +421,7 @@ static void MSTP_Receive_Frame_FSM(
}
break;
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. */
if (timer_silence_elapsed(Tframe_abort)) {
/* Timeout */
@@ -497,7 +497,7 @@ static void MSTP_Receive_Frame_FSM(
} else if (Index == 5) {
/* 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. */
if (HeaderCRC != 0x55) {
/* BadCRC */
@@ -509,7 +509,7 @@ static void MSTP_Receive_Frame_FSM(
} else {
/* Note: proposed change to BACnet MSTP state machine!
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. */
if ((DataLength) && (DataLength <= InputBufferSize)) {
/* Data */
@@ -524,7 +524,7 @@ static void MSTP_Receive_Frame_FSM(
(DestinationAddress ==
MSTP_BROADCAST_ADDRESS)) {
/* ForUs */
/* indicate that a frame with
/* indicate that a frame with
no data has been received */
MSTP_Flag.ReceivedValidFrame = true;
} else {
@@ -560,7 +560,7 @@ static void MSTP_Receive_Frame_FSM(
} else if (RS485_ReceiveError()) {
/* Error */
timer_silence_reset();
/* indicate that an error has occurred during
/* indicate that an error has occurred during
the reception of a frame */
MSTP_Flag.ReceivedInvalidFrame = true;
/* wait for the start of the next frame. */
@@ -585,7 +585,7 @@ static void MSTP_Receive_Frame_FSM(
if ((DestinationAddress == This_Station) ||
(DestinationAddress == MSTP_BROADCAST_ADDRESS)) {
/* ForUs */
/* indicate that a frame with no data
/* indicate that a frame with no data
has been received */
MSTP_Flag.ReceivedValidFrame = true;
}
@@ -691,7 +691,7 @@ uint16_t dlmstp_receive(
MSTP_Receive_Frame_FSM();
if (MSTP_Flag.ReceivedValidFrame || MSTP_Flag.ReceivedInvalidFrame)
break;
/* if we are not idle, then we are
/* if we are not idle, then we are
receiving a frame or timing out */
if (Receive_State == MSTP_RECEIVE_STATE_IDLE)
break;
@@ -721,7 +721,7 @@ void dlmstp_set_mac_address(
This_Station = mac_address;
/* FIXME: implement your data storage */
/* I2C_Write_Byte(
EEPROM_DEVICE_ADDRESS,
EEPROM_DEVICE_ADDRESS,
mac_address,
EEPROM_MSTP_MAC_ADDR); */
}