Steve Karg
1f591db6e7
* Added a MS/TP zero-config (automatically choose an unused MAC address) using an algorithm that starts with MAC=64 and waits for a random number of PFM (minimum of 8 plus modulo 64) before attempting to choose a MAC sequentially from 64..127. The confirmation uses a 128-bit UUID with the MSTP Test Request frame. The modifications are in src/bacnet/datalink/mstp.c and src/bacnet/datalink/dlmstp.c modules enabling any device to use zero-config if enabled. A working demonstration is in the ports/stm32f4xx for the NUCLEO board. Complete unit testing is included. Options include lurking forever (wait for a router or another master node before joining) or lurking for a minimum time (enables self forming automatic MAC addressing device nodes).
92 lines
2.6 KiB
C
92 lines
2.6 KiB
C
/*####COPYRIGHTBEGIN####
|
|
-------------------------------------------
|
|
Copyright (C) 2004 Steve Karg
|
|
|
|
This program is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License
|
|
as published by the Free Software Foundation; either version 2
|
|
of the License, or (at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to:
|
|
The Free Software Foundation, Inc.
|
|
59 Temple Place - Suite 330
|
|
Boston, MA 02111-1307
|
|
USA.
|
|
|
|
As a special exception, if other files instantiate templates or
|
|
use macros or inline functions from this file, or you compile
|
|
this file and link it with other works to produce a work based
|
|
on this file, this file does not by itself cause the resulting
|
|
work to be covered by the GNU General Public License. However
|
|
the source code for this file must still be made available in
|
|
accordance with section (3) of the GNU General Public License.
|
|
|
|
This exception does not invalidate any other reasons why a work
|
|
based on this file might be covered by the GNU General Public
|
|
License.
|
|
-------------------------------------------
|
|
####COPYRIGHTEND####*/
|
|
|
|
#ifndef RS485_H
|
|
#define RS485_H
|
|
|
|
#include <stdint.h>
|
|
#include "bacnet/bacnet_stack_exports.h"
|
|
#include "bacnet/datalink/mstp.h"
|
|
#include "bacport.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif /* __cplusplus */
|
|
|
|
BACNET_STACK_EXPORT
|
|
void RS485_Set_Interface(
|
|
char *ifname);
|
|
BACNET_STACK_EXPORT
|
|
const char *RS485_Interface(
|
|
void);
|
|
|
|
BACNET_STACK_EXPORT
|
|
void RS485_Initialize(
|
|
void);
|
|
|
|
BACNET_STACK_EXPORT
|
|
void RS485_Send_Frame(
|
|
struct mstp_port_struct_t *mstp_port, /* port specific data */
|
|
uint8_t * buffer, /* frame to send (up to 501 bytes of data) */
|
|
uint16_t nbytes); /* number of bytes of data (up to 501) */
|
|
|
|
BACNET_STACK_EXPORT
|
|
void RS485_Check_UART_Data(
|
|
struct mstp_port_struct_t *mstp_port); /* port specific data */
|
|
|
|
BACNET_STACK_EXPORT
|
|
uint32_t RS485_Get_Baud_Rate(
|
|
void);
|
|
BACNET_STACK_EXPORT
|
|
bool RS485_Set_Baud_Rate(
|
|
uint32_t baud);
|
|
|
|
BACNET_STACK_EXPORT
|
|
void RS485_Print_Error(
|
|
void);
|
|
|
|
BACNET_STACK_EXPORT
|
|
bool RS485_Interface_Valid(
|
|
unsigned port_number);
|
|
BACNET_STACK_EXPORT
|
|
void RS485_Print_Ports(
|
|
void);
|
|
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif /* __cplusplus */
|
|
#endif
|