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adding read property service

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This commit is contained in:
skarg
2005-03-23 23:09:04 +00:00
parent a67cadf94f
commit 66f3cb4a00
8 changed files with 212 additions and 19 deletions
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bacnet-stack/device.c
+152 -1
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@@ -39,6 +39,11 @@
#include "bacenum.h"
#include "config.h" // the custom stuff
// vendor id assigned by ASHRAE
static uint32_t Object_Identifier = 0;
// FIXME: it is likely that this name is configurable,
// so consider a fixed sized string
static const char *Object_Name = "SimpleServer";
static BACNET_DEVICE_STATUS System_Status = STATUS_OPERATIONAL;
static const char *Vendor_Name = "ASHRAE";
static uint16_t Vendor_Identifier = 0;
@@ -81,7 +86,17 @@ static uint8_t Database_Revision = 0;
//Profile_Name
// methods to manipulate the data
// FIXME: add APDU encode methods for each?
uint32_t Device_Object_Identifier(void)
{
return Object_Identifier;
}
void Device_Set_Object_Identifier(uint32_t object_id)
{
// FIXME: bounds check?
Object_Identifier = object_id;
}
BACNET_DEVICE_STATUS Device_System_Status(void)
{
return System_Status;
@@ -186,6 +201,7 @@ uint16_t Device_APDU_Timeout(void)
return APDU_Timeout;
}
// in milliseconds
void Device_Set_APDU_Timeout(uint16_t timeout)
{
APDU_Timeout = timeout;
@@ -211,3 +227,138 @@ void Device_Set_Database_Revision(uint8_t revision)
Database_Revision = revision;
}
int Device_Encode_Property_APDU(
uint8_t *apdu,
BACNET_PROPERTY_ID property,
int array_index)
{
int apdu_len = 0; // return value
switch (property)
{
case PROP_OBJECT_IDENTIFIER:
apdu_len = encode_tagged_object_id(&apdu[0], OBJECT_DEVICE,
Object_Identifier);
break;
case PROP_OBJECT_NAME:
apdu_len = encode_tagged_character_string(&apdu[0], Object_Name);
break;
case PROP_OBJECT_TYPE:
apdu_len = encode_tagged_enumerated(&apdu[0], OBJECT_DEVICE);
break;
case PROP_DESCRIPTION:
apdu_len = encode_tagged_character_string(&apdu[0], Description);
break;
case PROP_SYSTEM_STATUS:
apdu_len = encode_tagged_enumerated(&apdu[0], System_Status);
break;
case PROP_VENDOR_NAME:
apdu_len = encode_tagged_character_string(&apdu[0], Vendor_Name);
break;
case PROP_VENDOR_IDENTIFIER:
apdu_len = encode_tagged_unsigned(&apdu[0], Vendor_Identifier);
break;
case PROP_MODEL_NAME:
apdu_len = encode_tagged_character_string(&apdu[0], Model_Name);
break;
case PROP_FIRMWARE_REVISION:
apdu_len = encode_tagged_character_string(&apdu[0], Program_Version);
break;
case PROP_APPLICATION_SOFTWARE_VERSION:
apdu_len = encode_tagged_character_string(&apdu[0],
Application_Software_Version);
break;
// if you support time
case PROP_LOCAL_TIME:
//t = time(NULL);
//my_tm = localtime(&t);
//apdu_len =
// encode_tagged_time(&apdu[0], my_tm->tm_hour, my_tm->tm_min,
// my_tm->tm_sec, 0);
break;
// if you support date
case PROP_LOCAL_DATE:
//t = time(NULL);
//my_tm = localtime(&t);
// year = years since 1900
// month 1=Jan
// day = day of month
// wday 1=Monday...7=Sunday
//apdu_len = encode_tagged_date(&apdu[0],
// my_tm->tm_year,
// my_tm->tm_mon + 1,
// my_tm->tm_mday, ((my_tm->tm_wday == 0) ? 7 : my_tm->tm_wday));
break;
case PROP_PROTOCOL_VERSION:
apdu_len = encode_tagged_unsigned(&apdu[0], Protocol_Version);
break;
// Legacy Support - necessary?
//case PROP_PROTOCOL_CONFORMANCE_CLASS:
// apdu_len = encode_tagged_unsigned(&apdu[0], 1);
// break;
case PROP_PROTOCOL_SERVICES_SUPPORTED:
// FIXME: needs an encoding function for bitstring
apdu[0] = 0x85; /* what is following? (this is a bitstring) */
apdu[1] = 0x06; /* length extension to 6 bytes */
apdu[2] = 0x05; /* 5 unused bits in the final byte */
apdu[3] = 0x00; /* none of the first 8 bits are set */
apdu[4] = 0x09; /* bits 3,0 are set */
apdu[5] = 0x00; /* none of the 3rd set of bits are set */
apdu[6] = 0x20; /* bit 5 is set */
apdu[7] = 0x20; /* bit 5 is set */
apdu_len = 8; /* bytes in this apdu */
break;
case PROP_PROTOCOL_OBJECT_TYPES_SUPPORTED:
// FIXME: needs an encoding function for bitstring
apdu[0] = 0x84; /* what is following? (this is a bitstring) */
apdu[1] = 0x06; /* 6 unused bits in the final byte */
apdu[2] = 0xFF; /* All of the first 8 bits are set */
apdu[3] = 0xFF; /* All of the second 8 bits are set */
apdu[4] = 0xC0; /* All of the valid bits are set */
apdu_len = 5; /* bytes in this apdu */
break;
case PROP_OBJECT_LIST:
// FIXME: hook into real object list, not just device
// Array element zero is the number of objects in the list
if (array_index == 0)
apdu_len = encode_tagged_unsigned(&apdu[0], 1);
// if no index was specified, then try to encode the entire list
// into one packet. Note that more than likely you will have
// to return an error if the number of encoded objects exceeds
// your maximum APDU size.
else if (array_index == BACNET_ARRAY_ALL)
{
apdu_len = encode_tagged_object_id(&apdu[0], OBJECT_DEVICE,
Object_Instance);
}
else
{
// the first object in the list is at index=1
apdu_len = encode_tagged_object_id(&apdu[0], OBJECT_DEVICE,
Object_Instance);
// FIXME: handle the error case of an index beyond the bounds
}
break;
case PROP_MAX_APDU_LENGTH_ACCEPTED:
apdu_len = encode_tagged_unsigned(&apdu[0],
Device_Max_APDU_Length_Accepted());
break;
case PROP_SEGMENTATION_SUPPORTED:
apdu_len = encode_tagged_enumerated(&apdu[0],
Device_Segmentation_Supported());
break;
case PROP_APDU_TIMEOUT:
apdu_len = encode_tagged_unsigned(&apdu[0], APDU_Timeout);
break;
case PROP_NUMBER_OF_APDU_RETRIES:
apdu_len = encode_tagged_unsigned(&apdu[0], Number_Of_APDU_Retries);
break;
default:
break;
}
return apdu_len;
}