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Returned Tusage_delay to the MS/TP state machines to fix excessive Reply-Posponed messages when received packet is decoupled from immediate handling. Some BACnet routers do not handle Reply-Postponed correctly and drop the subsequent valid reply.

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Added Slave Node FSM to linux/win32 MS/TP layer.
Added PDU queue to Linux MS/TP datalink layer.
This commit is contained in:
skarg
2011-08-24 12:33:20 +00:00
parent bd7011fda1
commit 26b5fdd3d0
8 changed files with 238 additions and 94 deletions
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bacnet-stack/ports/linux/rs485.c
+22 -17
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@@ -231,31 +231,36 @@ void RS485_Check_UART_Data(
int n;
if (mstp_port->ReceiveError == true) {
/* wait for state machine to clear this */
/*mstp_port->ReceiveError=false; */
return;
}
/* wait for state machine to read from the DataRegister */
if (mstp_port->DataAvailable == false) {
/* check for data */
/* do nothing but wait for state machine to clear the error */
/* burning time, so wait a longer time */
waiter.tv_sec = 0;
waiter.tv_usec = 5000;
} else if (mstp_port->DataAvailable == false) {
/* wait for state machine to read from the DataRegister */
if (FIFO_Count(&Rx_FIFO) > 0) {
/* data is available */
mstp_port->DataRegister = FIFO_Get(&Rx_FIFO);
mstp_port->DataAvailable = true;
/* FIFO is giving data - don't wait very long */
waiter.tv_sec = 0;
waiter.tv_usec = 10;
} else {
FD_ZERO (&input);
FD_SET (RS485_Handle, &input);
/* FIFO is empty - wait a longer time */
waiter.tv_sec = 0;
waiter.tv_usec = 5000;
n = select (RS485_Handle + 1, &input, NULL, NULL, &waiter);
if (n < 0) {
return;
}
if (FD_ISSET(RS485_Handle, &input)) {
n = read(RS485_Handle, buf, sizeof(buf));
FIFO_Add(&Rx_FIFO, &buf[0], n);
}
}
}
/* grab bytes and stuff them into the FIFO every time */
FD_ZERO (&input);
FD_SET (RS485_Handle, &input);
n = select (RS485_Handle + 1, &input, NULL, NULL, &waiter);
if (n < 0) {
return;
}
if (FD_ISSET(RS485_Handle, &input)) {
n = read(RS485_Handle, buf, sizeof(buf));
FIFO_Add(&Rx_FIFO, &buf[0], n);
}
}
void RS485_Cleanup(