Steve Karg
103 lines
3.4 KiB
C
103 lines
3.4 KiB
C
/**
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* @file
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* @brief BACnet stack initialization and task processing
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* @author Steve Karg
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* @date 2011
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* @copyright SPDX-License-Identifier: MIT
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*/
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#include <stdint.h>
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#include <stdbool.h>
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/* hardware layer includes */
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#include "bacnet/basic/sys/mstimer.h"
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#include "rs485.h"
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#include "program-ubasic.h"
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/* BACnet Stack includes */
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#include "bacnet/datalink/datalink.h"
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#include "bacnet/npdu.h"
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#include "bacnet/basic/services.h"
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#include "bacnet/basic/tsm/tsm.h"
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#include "bacnet/datetime.h"
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#include "bacnet/dcc.h"
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#include "bacnet/iam.h"
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/* BACnet objects */
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#include "bacnet/basic/object/device.h"
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#include "bacnet/basic/object/program.h"
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#include "bacnet/basic/program/ubasic/ubasic.h"
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/* me */
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#include "bacnet.h"
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/* timer for device communications control */
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static struct mstimer DCC_Timer;
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#define DCC_CYCLE_SECONDS 1
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/* Device ID to track changes */
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static uint32_t Device_ID = 0xFFFFFFFF;
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/**
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* @brief Initialize the BACnet device object, the service handlers, and timers
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*/
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void bacnet_init(void)
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{
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/* initialize objects */
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Device_Init(NULL);
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Program_UBASIC_Init(BACNET_MAX_INSTANCE);
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/* set up our confirmed service unrecognized service handler - required! */
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apdu_set_unrecognized_service_handler_handler(handler_unrecognized_service);
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/* we need to handle who-is to support dynamic device binding */
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apdu_set_unconfirmed_handler(SERVICE_UNCONFIRMED_WHO_IS, handler_who_is);
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apdu_set_unconfirmed_handler(SERVICE_UNCONFIRMED_WHO_HAS, handler_who_has);
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/* Set the handlers for any confirmed services that we support. */
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/* We must implement read property - it's required! */
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apdu_set_confirmed_handler(
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SERVICE_CONFIRMED_READ_PROPERTY, handler_read_property);
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apdu_set_confirmed_handler(
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SERVICE_CONFIRMED_READ_PROP_MULTIPLE, handler_read_property_multiple);
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apdu_set_confirmed_handler(
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SERVICE_CONFIRMED_REINITIALIZE_DEVICE, handler_reinitialize_device);
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apdu_set_confirmed_handler(
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SERVICE_CONFIRMED_WRITE_PROPERTY, handler_write_property);
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/* local time and date */
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apdu_set_unconfirmed_handler(
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SERVICE_UNCONFIRMED_TIME_SYNCHRONIZATION, handler_timesync);
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handler_timesync_set_callback_set(datetime_timesync);
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datetime_init();
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/* handle communication so we can shutup when asked */
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apdu_set_confirmed_handler(
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SERVICE_CONFIRMED_DEVICE_COMMUNICATION_CONTROL,
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handler_device_communication_control);
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/* start the cyclic 1 second timer for DCC */
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mstimer_set(&DCC_Timer, DCC_CYCLE_SECONDS * 1000);
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}
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/* local buffer for incoming PDUs to process */
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static uint8_t PDUBuffer[MAX_MPDU];
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/**
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* @brief non-blocking BACnet task
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*/
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void bacnet_task(void)
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{
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bool hello_world = false;
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uint16_t pdu_len = 0;
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BACNET_ADDRESS src = { 0 };
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/* hello, World! */
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if (Device_ID != Device_Object_Instance_Number()) {
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Device_ID = Device_Object_Instance_Number();
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hello_world = true;
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}
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if (hello_world) {
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Send_I_Am(&Handler_Transmit_Buffer[0]);
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}
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/* handle the communication timer */
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if (mstimer_expired(&DCC_Timer)) {
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mstimer_reset(&DCC_Timer);
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dcc_timer_seconds(DCC_CYCLE_SECONDS);
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}
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Program_UBASIC_Task();
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/* handle the messaging */
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pdu_len = datalink_receive(&src, &PDUBuffer[0], sizeof(PDUBuffer), 0);
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if (pdu_len) {
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npdu_handler(&src, &PDUBuffer[0], pdu_len);
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}
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}
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