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Feature/mstp zero config option (#564)

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* 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).
This commit is contained in:
Steve Karg
2024-02-02 11:18:20 -06:00
committed by GitHub
parent 8f576461a8
commit 1f591db6e7
26 changed files with 2138 additions and 599 deletions
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ports/linux/mstpsnap.c
+7 -7
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@@ -59,7 +59,7 @@
#endif
/* local port data - shared with RS-485 */
static volatile struct mstp_port_struct_t MSTP_Port;
static struct mstp_port_struct_t MSTP_Port;
/* buffers needed by mstp port struct */
static uint8_t RxBuffer[DLMSTP_MPDU_MAX];
static uint8_t TxBuffer[DLMSTP_MPDU_MAX];
@@ -83,7 +83,7 @@ static void Timer_Silence_Reset(void *pArg)
}
/* functions used by the MS/TP state machine to put or get data */
uint16_t MSTP_Put_Receive(volatile struct mstp_port_struct_t *mstp_port)
uint16_t MSTP_Put_Receive(struct mstp_port_struct_t *mstp_port)
{
(void)mstp_port;
@@ -93,7 +93,7 @@ uint16_t MSTP_Put_Receive(volatile struct mstp_port_struct_t *mstp_port)
/* for the MS/TP state machine to use for getting data to send */
/* Return: amount of PDU data */
uint16_t MSTP_Get_Send(
volatile struct mstp_port_struct_t *mstp_port, unsigned timeout)
struct mstp_port_struct_t *mstp_port, unsigned timeout)
{ /* milliseconds to wait for a packet */
(void)mstp_port;
(void)timeout;
@@ -107,7 +107,7 @@ uint16_t MSTP_Get_Send(
* @param nbytes - number of bytes of data to send
*/
void MSTP_Send_Frame(
volatile struct mstp_port_struct_t *mstp_port,
struct mstp_port_struct_t *mstp_port,
uint8_t * buffer,
uint16_t nbytes)
{
@@ -117,7 +117,7 @@ void MSTP_Send_Frame(
}
uint16_t MSTP_Get_Reply(
volatile struct mstp_port_struct_t *mstp_port, unsigned timeout)
struct mstp_port_struct_t *mstp_port, unsigned timeout)
{ /* milliseconds to wait for a packet */
(void)mstp_port;
(void)timeout;
@@ -165,7 +165,7 @@ static int network_init(const char *name, int protocol)
}
static void snap_received_packet(
volatile struct mstp_port_struct_t *mstp_port, int sockfd)
struct mstp_port_struct_t *mstp_port, int sockfd)
{
uint16_t mtu_len = 0; /* number of octets of packet saved in file */
unsigned i = 0; /* counter */
@@ -241,7 +241,7 @@ void signal_init(void)
/* simple test to packetize the data and print it */
int main(int argc, char *argv[])
{
volatile struct mstp_port_struct_t *mstp_port;
struct mstp_port_struct_t *mstp_port;
long my_baud = 38400;
uint32_t packet_count = 0;
int sockfd = -1;