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refactored the Who-Is and I-Am handling, and cleaned up some comments.

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This commit is contained in:
skarg
2006-02-20 16:17:46 +00:00
parent 16c2545f45
commit 676ecf77a2
9 changed files with 149 additions and 188 deletions
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bacnet-stack/demo/writefile/writefile.c
+52 -57
View File
@@ -23,7 +23,7 @@
*
*********************************************************************/
/* READFILE: command line tool that writes a file to a BACnet device. */
/* command line tool that sends a BACnet service, and displays the reply */
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
@@ -299,64 +299,59 @@ int main(int argc, char *argv[])
printf("\r\n");
break;
}
if (I_Am_Request) {
I_Am_Request = false;
iam_send(&Handler_Transmit_Buffer[0]);
} else {
/* wait until the device is bound, or timeout and quit */
found = address_bind_request(Target_Device_Object_Instance,
&max_apdu, &Target_Address);
if (found) {
/* calculate the smaller of our APDU size or theirs
and remove the overhead of the APDU (varies depending on size).
note: we could fail if there is a bottle neck (router)
and smaller MPDU in betweeen. */
if (max_apdu < MAX_APDU)
my_max_apdu = max_apdu;
else
my_max_apdu = MAX_APDU;
/* Typical sizes are 50, 128, 206, 480, 1024, and 1476 octets */
if (my_max_apdu <= 50)
requestedOctetCount = my_max_apdu - 16;
else if (my_max_apdu <= 480)
requestedOctetCount = my_max_apdu - 32;
else if (my_max_apdu <= 1476)
requestedOctetCount = my_max_apdu - 64;
else
requestedOctetCount = my_max_apdu / 2;
/* has the previous invoke id expired or returned?
note: invoke ID = 0 is invalid, so it will be idle */
if ((invoke_id == 0) || tsm_invoke_id_free(invoke_id)) {
if (invoke_id != 0)
fileStartPosition += requestedOctetCount;
/* we'll read the file in chunks
less than max_apdu to keep unsegmented */
pFile = fopen(Local_File_Name, "rb");
if (pFile) {
(void) fseek(pFile, fileStartPosition, SEEK_SET);
len = fread(octetstring_value(&fileData), 1,
requestedOctetCount, pFile);
if (len < requestedOctetCount)
End_Of_File_Detected = true;
octetstring_truncate(&fileData, len);
fclose(pFile);
} else
/* wait until the device is bound, or timeout and quit */
found = address_bind_request(Target_Device_Object_Instance,
&max_apdu, &Target_Address);
if (found) {
/* calculate the smaller of our APDU size or theirs
and remove the overhead of the APDU (varies depending on size).
note: we could fail if there is a bottle neck (router)
and smaller MPDU in betweeen. */
if (max_apdu < MAX_APDU)
my_max_apdu = max_apdu;
else
my_max_apdu = MAX_APDU;
/* Typical sizes are 50, 128, 206, 480, 1024, and 1476 octets */
if (my_max_apdu <= 50)
requestedOctetCount = my_max_apdu - 16;
else if (my_max_apdu <= 480)
requestedOctetCount = my_max_apdu - 32;
else if (my_max_apdu <= 1476)
requestedOctetCount = my_max_apdu - 64;
else
requestedOctetCount = my_max_apdu / 2;
/* has the previous invoke id expired or returned?
note: invoke ID = 0 is invalid, so it will be idle */
if ((invoke_id == 0) || tsm_invoke_id_free(invoke_id)) {
if (invoke_id != 0)
fileStartPosition += requestedOctetCount;
/* we'll read the file in chunks
less than max_apdu to keep unsegmented */
pFile = fopen(Local_File_Name, "rb");
if (pFile) {
(void) fseek(pFile, fileStartPosition, SEEK_SET);
len = fread(octetstring_value(&fileData), 1,
requestedOctetCount, pFile);
if (len < requestedOctetCount)
End_Of_File_Detected = true;
printf("\rSending %d bytes",
(fileStartPosition + len));
invoke_id =
Send_Atomic_Write_File_Stream
(Target_Device_Object_Instance,
Target_File_Object_Instance, fileStartPosition,
&fileData);
Current_Invoke_ID = invoke_id;
}
} else {
/* increment timer - exit if timed out */
elapsed_seconds += (current_seconds - last_seconds);
if (elapsed_seconds > timeout_seconds)
break;
octetstring_truncate(&fileData, len);
fclose(pFile);
} else
End_Of_File_Detected = true;
printf("\rSending %d bytes",
(fileStartPosition + len));
invoke_id =
Send_Atomic_Write_File_Stream
(Target_Device_Object_Instance,
Target_File_Object_Instance, fileStartPosition,
&fileData);
Current_Invoke_ID = invoke_id;
}
} else {
/* increment timer - exit if timed out */
elapsed_seconds += (current_seconds - last_seconds);
if (elapsed_seconds > timeout_seconds)
break;
}
/* keep track of time for next check */
last_seconds = current_seconds;