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adding BBMD support.

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This commit is contained in:
skarg
2006-04-20 21:13:53 +00:00
parent 10b7a42b58
commit 23a00b7676
4 changed files with 106 additions and 19 deletions
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bacnet-stack/bbmd.c
+86 -11
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@@ -40,36 +40,111 @@
/* Handle the BACnet Broadcast Management Device,
Broadcast Distribution Table, and Foreign Device Registration */
int bbmd_encode_bvlc_result(
uint8_t *pdu,
BACNET_BVLC_RESULT result_code)
{
if (pdu) {
pdu[0] = BVLL_TYPE_BACNET_IP;
pdu[1] = BVLC_RESULT;
/* The 2-octet BVLC Length field is the length, in octets,
of the entire BVLL message, including the two octets of the
length field itself, most significant octet first. */
encode_unsigned16(&pdu[2], 6);
encode_unsigned16(&pdu[4], result_code);
}
return 6;
}
int bbmd_encode_write_bdt_init(
uint8_t *pdu,
unsigned entries)
{
int len = 0;
if (pdu) {
pdu[0] = BVLL_TYPE_BACNET_IP;
pdu[1] = BVLC_WRITE_BROADCAST_DISTRIBUTION_TABLE;
/* The 2-octet BVLC Length field is the length, in octets,
of the entire BVLL message, including the two octets of the
length field itself, most significant octet first. */
encode_unsigned16(&pdu[2], 4 + entries * 10);
len = 4;
}
return len;
}
int bbmd_encode_write_bdt_entry(
uint8_t *pdu,
struct in_addr *address,
uint16_t port,
struct in_addr *mask)
{
int len = 0;
if (pdu) {
encode_unsigned32(&pdu[0], address->s_addr);
encode_unsigned16(&pdu[4], port);
encode_unsigned32(&pdu[6], mask->s_addr);
len = 10;
}
return len;
}
int bbmd_encode_read_bdt(
uint8_t *pdu)
)
{
int len = 0;
if (pdu) {
pdu[0] = BVLL_TYPE_BACNET_IP;
pdu[1] = BVLC_READ_BROADCAST_DISTRIBUTION_TABLE;
/* The 2-octet BVLC Length field is the length, in octets,
of the entire BVLL message, including the two octets of the
length field itself, most significant octet first. */
encode_unsigned16(&pdu[2], 4);
len = 4;
}
return len;
}
void bbmd_handler(uint8_t *buf, int len, struct sockaddr_in *sin)
{
int function_type = 0;
if (buf[0] != 0x81)
if (buf[0] != BVLL_TYPE_BACNET_IP)
return;
function_type = buf[1];
switch (function_type)
{
case 0:
case BVLC_RESULT:
break;
case 1:
case BVLC_WRITE_BROADCAST_DISTRIBUTION_TABLE:
break;
case 2:
case BVLC_READ_BROADCAST_DISTRIBUTION_TABLE:
break;
case 3:
case BVLC_READ_BROADCAST_DISTRIBUTION_TABLE_ACK:
break;
case 4:
case BVLC_FORWARDED_NPDU:
break;
case 5:
case BVLC_REGISTER_FOREIGN_DEVICE:
break;
case 6:
case BVLC_READ_FOREIGN_DEVICE_TABLE:
break;
case 7:
case BVLC_READ_FOREIGN_DEVICE_TABLE_ACK:
break;
case 8:
case BVLC_DELETE_FOREIGN_DEVICE_TABLE_ENTRY:
break;
case 9:
case BVLC_DISTRIBUTE_BROADCAST_TO_NETWORK:
break;
case BVLC_ORIGINAL_BROADCAST_NPDU:
break;
default:
break;
}