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Created a local device.c object which is significantly smaller than the standard demo device.c object.

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skarg
2006-08-30 16:46:20 +00:00
parent 173b99295a
commit 55441280e4
1 changed files with 405 additions and 0 deletions
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bacnet-stack/ports/pic18/device.c
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/**************************************************************************
*
* Copyright (C) 2005,2006 Steve Karg <skarg@users.sourceforge.net>
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*********************************************************************/
#include <stdbool.h>
#include <stdint.h>
#include <string.h> /* for memmove */
#include "bacdef.h"
#include "bacdcode.h"
#include "bacenum.h"
#include "config.h" /* the custom stuff */
#include "apdu.h"
#include "device.h" /* me */
/* note: you really only need to define variables for
properties that are writable or that may change.
The properties that are constant can be hard coded
into the read-property encoding. */
static uint32_t Object_Instance_Number = 0;
static BACNET_DEVICE_STATUS System_Status = STATUS_OPERATIONAL;
static uint16_t APDU_Timeout = 3000;
static uint8_t Number_Of_APDU_Retries = 3;
/* methods to manipulate the data */
uint32_t Device_Object_Instance_Number(void)
{
return Object_Instance_Number;
}
bool Device_Set_Object_Instance_Number(uint32_t object_id)
{
bool status = true; /* return value */
if (object_id <= BACNET_MAX_INSTANCE)
Object_Instance_Number = object_id;
else
status = false;
return status;
}
bool Device_Valid_Object_Instance_Number(uint32_t object_id)
{
/* BACnet allows for a wildcard instance number */
return ((Object_Instance_Number == object_id) ||
(object_id == BACNET_MAX_INSTANCE));
}
BACNET_DEVICE_STATUS Device_System_Status(void)
{
return System_Status;
}
void Device_Set_System_Status(BACNET_DEVICE_STATUS status)
{
/* FIXME: bounds check? */
System_Status = status;
}
/* FIXME: put your vendor ID here! */
uint16_t Device_Vendor_Identifier(void)
{
return 0;
}
uint8_t Device_Protocol_Version(void)
{
return 1;
}
uint8_t Device_Protocol_Revision(void)
{
return 5;
}
/* FIXME: MAX_APDU is defined in config.ini - set it! */
uint16_t Device_Max_APDU_Length_Accepted(void)
{
return MAX_APDU;
}
BACNET_SEGMENTATION Device_Segmentation_Supported(void)
{
return SEGMENTATION_NONE;
}
uint16_t Device_APDU_Timeout(void)
{
return APDU_Timeout;
}
/* in milliseconds */
void Device_Set_APDU_Timeout(uint16_t timeout)
{
APDU_Timeout = timeout;
}
uint8_t Device_Number_Of_APDU_Retries(void)
{
return Number_Of_APDU_Retries;
}
void Device_Set_Number_Of_APDU_Retries(uint8_t retries)
{
Number_Of_APDU_Retries = retries;
}
uint8_t Device_Database_Revision(void)
{
return 0;
}
/* Since many network clients depend on the object list */
/* for discovery, it must be consistent! */
unsigned Device_Object_List_Count(void)
{
unsigned count = 1;
return count;
}
bool Device_Object_List_Identifier(unsigned array_index,
int *object_type, uint32_t * instance)
{
bool status = false;
unsigned object_index = 0;
unsigned object_count = 0;
/* device object */
if (array_index == 1) {
*object_type = OBJECT_DEVICE;
*instance = Object_Instance_Number;
status = true;
}
return status;
}
/* return the length of the apdu encoded or -1 for error */
int Device_Encode_Property_APDU(uint8_t * apdu,
BACNET_PROPERTY_ID property,
int32_t array_index,
BACNET_ERROR_CLASS * error_class, BACNET_ERROR_CODE * error_code)
{
int apdu_len = 0; /* return value */
int len = 0; /* apdu len intermediate value */
BACNET_BIT_STRING bit_string;
BACNET_CHARACTER_STRING char_string;
unsigned i = 0;
int object_type = 0;
uint32_t instance = 0;
unsigned count = 0;
/* FIXME: change the hardcoded names to suit your application */
switch (property) {
case PROP_OBJECT_IDENTIFIER:
apdu_len = encode_tagged_object_id(&apdu[0], OBJECT_DEVICE,
Object_Instance_Number);
break;
case PROP_OBJECT_NAME:
characterstring_init_ansi(&char_string, (char *)"TD");
apdu_len = encode_tagged_character_string(&apdu[0], &char_string);
break;
case PROP_OBJECT_TYPE:
apdu_len = encode_tagged_enumerated(&apdu[0], OBJECT_DEVICE);
break;
case PROP_DESCRIPTION:
characterstring_init_ansi(&char_string, (char *)"Tiny");
apdu_len = encode_tagged_character_string(&apdu[0], &char_string);
break;
case PROP_SYSTEM_STATUS:
apdu_len = encode_tagged_enumerated(&apdu[0], Device_System_Status());
break;
case PROP_VENDOR_NAME:
characterstring_init_ansi(&char_string, (char *)"ASHRAE");
apdu_len = encode_tagged_character_string(&apdu[0], &char_string);
break;
case PROP_VENDOR_IDENTIFIER:
apdu_len = encode_tagged_unsigned(&apdu[0], Device_Vendor_Identifier());
break;
case PROP_MODEL_NAME:
characterstring_init_ansi(&char_string, (char *)"GNU");
apdu_len = encode_tagged_character_string(&apdu[0], &char_string);
break;
case PROP_FIRMWARE_REVISION:
characterstring_init_ansi(&char_string, (char *)"1.0");
apdu_len = encode_tagged_character_string(&apdu[0], &char_string);
break;
case PROP_APPLICATION_SOFTWARE_VERSION:
characterstring_init_ansi(&char_string, (char *)"1.0");
apdu_len = encode_tagged_character_string(&apdu[0], &char_string);
break;
case PROP_PROTOCOL_VERSION:
apdu_len =
encode_tagged_unsigned(&apdu[0], Device_Protocol_Version());
break;
case PROP_PROTOCOL_REVISION:
apdu_len =
encode_tagged_unsigned(&apdu[0], Device_Protocol_Revision());
break;
/* BACnet Legacy Support */
case PROP_PROTOCOL_CONFORMANCE_CLASS:
apdu_len = encode_tagged_unsigned(&apdu[0], 1);
break;
case PROP_PROTOCOL_SERVICES_SUPPORTED:
/* Note: list of services that are executed, not initiated. */
bitstring_init(&bit_string);
for (i = 0; i < MAX_BACNET_SERVICES_SUPPORTED; i++) {
/* automatic lookup based on handlers set */
bitstring_set_bit(&bit_string, (uint8_t) i,
apdu_service_supported(i));
}
apdu_len = encode_tagged_bitstring(&apdu[0], &bit_string);
break;
case PROP_PROTOCOL_OBJECT_TYPES_SUPPORTED:
/* Note: this is the list of objects that can be in this device,
not a list of objects that this device can access */
bitstring_init(&bit_string);
for (i = 0; i < MAX_ASHRAE_OBJECT_TYPE; i++) {
/* initialize all the object types to not-supported */
bitstring_set_bit(&bit_string, (uint8_t) i, false);
}
/* FIXME: indicate the objects that YOU support */
bitstring_set_bit(&bit_string, OBJECT_DEVICE, true);
apdu_len = encode_tagged_bitstring(&apdu[0], &bit_string);
break;
case PROP_OBJECT_LIST:
count = Device_Object_List_Count();
/* Array element zero is the number of objects in the list */
if (array_index == BACNET_ARRAY_LENGTH_INDEX)
apdu_len = encode_tagged_unsigned(&apdu[0], count);
/* 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) {
for (i = 1; i <= count; i++) {
if (Device_Object_List_Identifier(i, &object_type,
&instance)) {
len =
encode_tagged_object_id(&apdu[apdu_len],
object_type, instance);
apdu_len += len;
/* assume next one is the same size as this one */
/* can we all fit into the APDU? */
if ((apdu_len + len) >= MAX_APDU) {
*error_class = ERROR_CLASS_SERVICES;
*error_code = ERROR_CODE_NO_SPACE_FOR_OBJECT;
apdu_len = -1;
break;
}
} else {
/* error: internal error? */
*error_class = ERROR_CLASS_SERVICES;
*error_code = ERROR_CODE_OTHER;
apdu_len = -1;
break;
}
}
} else {
if (Device_Object_List_Identifier(array_index, &object_type,
&instance))
apdu_len =
encode_tagged_object_id(&apdu[0], object_type,
instance);
else {
*error_class = ERROR_CLASS_PROPERTY;
*error_code = ERROR_CODE_INVALID_ARRAY_INDEX;
apdu_len = -1;
}
}
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], Device_Number_Of_APDU_Retries());
break;
case PROP_DEVICE_ADDRESS_BINDING:
/* FIXME: encode the list here, if it exists */
break;
case PROP_DATABASE_REVISION:
apdu_len = encode_tagged_unsigned(&apdu[0], Device_Database_Revision());
break;
default:
*error_class = ERROR_CLASS_PROPERTY;
*error_code = ERROR_CODE_UNKNOWN_PROPERTY;
apdu_len = -1;
break;
}
return apdu_len;
}
#ifdef TEST
#include <assert.h>
#include <string.h>
#include "ctest.h"
void testDevice(Test * pTest)
{
bool status = false;
const char *name = "Patricia";
status = Device_Set_Object_Instance_Number(0);
ct_test(pTest, Device_Object_Instance_Number() == 0);
ct_test(pTest, status == true);
status = Device_Set_Object_Instance_Number(BACNET_MAX_INSTANCE);
ct_test(pTest, Device_Object_Instance_Number() == BACNET_MAX_INSTANCE);
ct_test(pTest, status == true);
status = Device_Set_Object_Instance_Number(BACNET_MAX_INSTANCE / 2);
ct_test(pTest,
Device_Object_Instance_Number() == (BACNET_MAX_INSTANCE / 2));
ct_test(pTest, status == true);
status = Device_Set_Object_Instance_Number(BACNET_MAX_INSTANCE + 1);
ct_test(pTest,
Device_Object_Instance_Number() != (BACNET_MAX_INSTANCE + 1));
ct_test(pTest, status == false);
return;
}
#ifdef TEST_DEVICE
/* stubs to dependencies to keep unit test simple */
char *Analog_Input_Name(uint32_t object_instance)
{
(void) object_instance;
return "";
}
unsigned Analog_Input_Count(void)
{
return 0;
}
uint32_t Analog_Input_Index_To_Instance(unsigned index)
{
return index;
}
char *Analog_Output_Name(uint32_t object_instance)
{
(void) object_instance;
return "";
}
unsigned Analog_Output_Count(void)
{
return 0;
}
uint32_t Analog_Output_Index_To_Instance(unsigned index)
{
return index;
}
int main(void)
{
Test *pTest;
bool rc;
pTest = ct_create("BACnet Tiny Device", NULL);
/* individual tests */
rc = ct_addTestFunction(pTest, testDevice);
assert(rc);
ct_setStream(pTest, stdout);
ct_run(pTest);
(void) ct_report(pTest);
ct_destroy(pTest);
return 0;
}
#endif /* TEST_DEVICE */
#endif /* TEST */