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Modified the MS/TP datalink on Linux to be able to run correctly as a datalink layer when built with the demos.

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This commit is contained in:
skarg
2007-06-30 22:47:23 +00:00
parent 3ceed4535e
commit ade401f44b
4 changed files with 105 additions and 116 deletions
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bacnet-stack/ports/linux/rs485.c
+46 -45
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@@ -137,50 +137,6 @@ bool RS485_Set_Baud_Rate(uint32_t baud)
return valid;
}
void RS485_Initialize(void)
{
struct termios newtio;
/*
Open device for reading and writing.
*/
RS485_Handle = open(RS485_Port_Name,
O_RDWR | O_NOCTTY | O_NDELAY );
if (RS485_Handle < 0) {
perror(RS485_Port_Name);
exit(-1);
}
#if 0
/* non blocking for the read */
fcntl(RS485_Handle, F_SETFL, FNDELAY);
#else
/* effecient blocking for the read */
fcntl(RS485_Handle, F_SETFL, 0);
#endif
/* save current serial port settings */
tcgetattr(RS485_Handle,&RS485_oldtio);
/* clear struct for new port settings */
bzero(&newtio, sizeof(newtio));
/*
BAUDRATE: Set bps rate. You could also use cfsetispeed and cfsetospeed.
CRTSCTS : output hardware flow control (only used if the cable has
all necessary lines. See sect. 7 of Serial-HOWTO)
CS8 : 8n1 (8bit,no parity,1 stopbit)
CLOCAL : local connection, no modem contol
CREAD : enable receiving characters
*/
newtio.c_cflag = RS485_Baud | CS8 | CLOCAL | CREAD;
/* Raw input */
newtio.c_iflag = 0;
/* Raw output */
newtio.c_oflag = 0;
/* no processing */
newtio.c_lflag = 0;
/* activate the settings for the port after flushing I/O */
tcsetattr(RS485_Handle,TCSAFLUSH,&newtio);
}
/* Transmits a Frame on the wire */
void RS485_Send_Frame(
struct mstp_port_struct_t *mstp_port, /* port specific data */
@@ -253,6 +209,52 @@ void RS485_Cleanup(void)
close(RS485_Handle);
}
void RS485_Initialize(void)
{
struct termios newtio;
/*
Open device for reading and writing.
*/
RS485_Handle = open(RS485_Port_Name,
O_RDWR | O_NOCTTY | O_NDELAY );
if (RS485_Handle < 0) {
perror(RS485_Port_Name);
exit(-1);
}
#if 0
/* non blocking for the read */
fcntl(RS485_Handle, F_SETFL, FNDELAY);
#else
/* effecient blocking for the read */
fcntl(RS485_Handle, F_SETFL, 0);
#endif
/* save current serial port settings */
tcgetattr(RS485_Handle,&RS485_oldtio);
/* clear struct for new port settings */
bzero(&newtio, sizeof(newtio));
/*
BAUDRATE: Set bps rate. You could also use cfsetispeed and cfsetospeed.
CRTSCTS : output hardware flow control (only used if the cable has
all necessary lines. See sect. 7 of Serial-HOWTO)
CS8 : 8n1 (8bit,no parity,1 stopbit)
CLOCAL : local connection, no modem contol
CREAD : enable receiving characters
*/
newtio.c_cflag = RS485_Baud | CS8 | CLOCAL | CREAD;
/* Raw input */
newtio.c_iflag = 0;
/* Raw output */
newtio.c_oflag = 0;
/* no processing */
newtio.c_lflag = 0;
/* activate the settings for the port after flushing I/O */
tcsetattr(RS485_Handle,TCSAFLUSH,&newtio);
/* destructor */
atexit(RS485_Cleanup);
}
#ifdef TEST_RS485
#include <string.h>
int main(int argc, char *argv[])
@@ -270,7 +272,6 @@ int main(int argc, char *argv[])
}
RS485_Set_Baud_Rate(38400);
RS485_Initialize();
atexit(RS485_Cleanup);
for (;;) {
written = write(RS485_Handle, wbuf, wlen);