static void dlmstp_master_fsm_task(
void *pArg)
{
DWORD dwMilliseconds = 0;
(void) pArg;
(void) SetThreadPriority(GetCurrentThread(),
THREAD_PRIORITY_TIME_CRITICAL);
while (TRUE) {
switch (MSTP_Port.master_state) {
case MSTP_MASTER_STATE_IDLE:
dwMilliseconds = Tno_token;
break;
case MSTP_MASTER_STATE_WAIT_FOR_REPLY:
dwMilliseconds = Treply_timeout;
break;
case MSTP_MASTER_STATE_POLL_FOR_MASTER:
dwMilliseconds = Tusage_timeout;
break;
default:
dwMilliseconds = 0;
break;
}
if (dwMilliseconds)
WaitForSingleObject(Received_Frame_Flag, dwMilliseconds);
MSTP_Master_Node_FSM(&MSTP_Port);
}
}
static void *dlmstp_master_fsm_task(
void *pArg)
{
unsigned long milliseconds = 0;
struct timespec abstime;
(void) pArg;
for (;;) {
switch (MSTP_Port.master_state) {
case MSTP_MASTER_STATE_IDLE:
milliseconds = Tno_token;
break;
case MSTP_MASTER_STATE_WAIT_FOR_REPLY:
milliseconds = Treply_timeout;
break;
case MSTP_MASTER_STATE_POLL_FOR_MASTER:
milliseconds = Tusage_timeout;
break;
default:
milliseconds = 0;
break;
}
if (milliseconds) {
get_abstime(&abstime, milliseconds);
/* we want an OS effecient way to wait for a frame */
pthread_cond_timedwait(&Received_Frame_Flag, &Received_Frame_Mutex,
&abstime);
}
MSTP_Master_Node_FSM(&MSTP_Port);
}
return NULL;
}
void dlmstp_task(
void)
{
bool bytes_remaining;
bool received_frame;
/* only do receive state machine while we don't have a frame */
if ((MSTP_Port.ReceivedValidFrame == false) &&
(MSTP_Port.ReceivedInvalidFrame == false)) {
do {
bytes_remaining = RS485_Check_UART_Data(&MSTP_Port);
MSTP_Receive_Frame_FSM(&MSTP_Port);
received_frame = MSTP_Port.ReceivedValidFrame ||
MSTP_Port.ReceivedInvalidFrame;
if (received_frame)
break;
} while (bytes_remaining);
}
/* only do master state machine while rx is idle */
if (MSTP_Port.receive_state == MSTP_RECEIVE_STATE_IDLE) {
if (MSTP_Port.This_Station <= DEFAULT_MAX_MASTER) {
while (MSTP_Master_Node_FSM(&MSTP_Port)) {
/* do nothing while some states fast transition */
};
}
}
/* see if there is a packet available, and a place
to put the reply (if necessary) and process it */
if (Receive_Buffer.ready && !MSTP_Port.TxReady) {
if (Receive_Buffer.pdu_len) {
MSTP_Packets++;
npdu_handler(&Receive_Buffer.address, &Receive_Buffer.pdu[0],
Receive_Buffer.pdu_len);
}
Receive_Buffer.ready = false;
}
return;
}
