mirror of
https://github.com/stargieg/bacnet-stack
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123 lines
3.7 KiB
C
123 lines
3.7 KiB
C
/**************************************************************************
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*
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* Copyright (C) 2007 Steve Karg <skarg@users.sourceforge.net>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*********************************************************************/
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#include <stdbool.h>
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#include <stdint.h>
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#include "hardware.h"
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#include "timer.h"
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#include "rs485.h"
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#include "datalink.h"
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#include "npdu.h"
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#include "txbuf.h"
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#include "iam.h"
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#include "device.h"
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#include "av.h"
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#include "handlers.h"
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/* local version override */
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const char *BACnet_Version = "1.0";
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/* For porting to IAR, see:
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http://www.avrfreaks.net/wiki/index.php/Documentation:AVR_GCC/IarToAvrgcc*/
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/* dummy function - so we can use default demo handlers */
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bool dcc_communication_enabled(
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void)
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{
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return true;
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}
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static void init(
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void)
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{
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/* FIXME: Initialize the Clock Prescaler for ATmega8 */
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#if defined(__AVR_ATmega168__)
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/* The default CLKPSx bits are factory set to 0011 */
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/* Enbable the Clock Prescaler */
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CLKPR = _BV(CLKPCE);
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/* CLKPS3 CLKPS2 CLKPS1 CLKPS0 Clock Division Factor
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------ ------ ------ ------ ---------------------
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0 0 0 0 1
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0 0 0 1 2
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0 0 1 0 4
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0 0 1 1 8
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0 1 0 0 16
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0 1 0 1 32
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0 1 1 0 64
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0 1 1 1 128
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1 0 0 0 256
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1 x x x Reserved
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*/
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/* Set the CLKPS3..0 bits to Prescaler of 1 */
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CLKPR = 0;
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#endif
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/* Initialize I/O ports */
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/* For Port DDRx (Data Direction) Input=0, Output=1 */
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/* For Port PORTx (Bit Value) TriState=0, High=1 */
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DDRB = 0;
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PORTB = 0;
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DDRC = 0;
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PORTC = 0;
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DDRD = 0;
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PORTD = 0;
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/* Configure the watchdog timer - Disabled for testing */
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#if defined(__AVR_ATmega168__)
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BIT_CLEAR(MCUSR, WDRF);
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WDTCSR = 0;
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#else
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BIT_CLEAR(MCUCSR, WDRF);
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WDTCR = 0;
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#endif
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/* Configure Specialized Hardware */
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RS485_Initialize();
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RS485_Set_Baud_Rate(38400);
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/* Configure Timer0 for millisecond timer */
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timer_init();
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/* Enable global interrupts */
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__enable_interrupt();
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}
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static uint8_t PDUBuffer[MAX_MPDU];
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int main(
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void)
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{
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uint16_t pdu_len = 0;
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BACNET_ADDRESS src; /* source address */
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init();
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datalink_init(NULL);
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for (;;) {
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/* other tasks */
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/* BACnet handling */
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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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}
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