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Working on DOS port.

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This commit is contained in:
skarg
2007-12-06 23:17:27 +00:00
parent 7622c631af
commit eb72c8cb64
4 changed files with 64 additions and 85 deletions
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bacnet-stack/ports/dos/serial.c
+54 -33
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@@ -43,6 +43,37 @@ void (INTERRUPT FAR *oldvector_serial )();
int ComBase; /* Comm port address */
int IrqNum; /* Comm interrupt request */
void CloseComPort ( void )
{
int status;
/* restore UART to previous state */
outp ( ComBase + INT_EN, (unsigned char) 0 );
outp ( ComBase + MODEM_CNTRL,
(unsigned char) old_comm_params.modem );
status = inp ( ComBase + LINE_CNTRL );
outp ( ComBase + LINE_CNTRL,
(unsigned char) status | 0x80 );
outp ( ComBase + BAUD_LSB,
(unsigned char) old_comm_params.baud_lsb );
outp ( ComBase + BAUD_MSB,
(unsigned char) old_comm_params.baud_msb );
outp ( ComBase + LINE_CNTRL,
(unsigned char) old_comm_params.line );
outp ( 0x21, (unsigned char) old_comm_params.int_cntrl );
/* restore old interrupt handler */
setvect ( IrqNum + 8, oldvector_serial );
/* free input and output queues */
free ( Serial_In_Queue );
free ( Serial_Out_Queue );
return;
}
int OpenComPort ( char Port ) /* install int. handler */
{
unsigned status;
@@ -105,53 +136,25 @@ int OpenComPort ( char Port ) /* install int. handler */
outp ( 0x21, (unsigned char) old_comm_params.int_cntrl &
(unsigned char) status );
atexit(CloseComPort);
return retval;
}
void CloseComPort ( void )
{
int status;
/* restore UART to previous state */
outp ( ComBase + INT_EN, (unsigned char) 0 );
outp ( ComBase + MODEM_CNTRL,
(unsigned char) old_comm_params.modem );
status = inp ( ComBase + LINE_CNTRL );
outp ( ComBase + LINE_CNTRL,
(unsigned char) status | 0x80 );
outp ( ComBase + BAUD_LSB,
(unsigned char) old_comm_params.baud_lsb );
outp ( ComBase + BAUD_MSB,
(unsigned char) old_comm_params.baud_msb );
outp ( ComBase + LINE_CNTRL,
(unsigned char) old_comm_params.line );
outp ( 0x21, (unsigned char) old_comm_params.int_cntrl );
/* restore old interrupt handler */
setvect ( IrqNum + 8, oldvector_serial );
/* free input and output queues */
free ( Serial_In_Queue );
free ( Serial_Out_Queue );
return;
}
void InitComPort ( char Baud[], char Databits,
char Parity, char Stopbits )
{
int status;
long baudrate;
unsigned divisor;
long baudrate;
/* set baud rate */
status = inp ( ComBase + LINE_CNTRL );
outp ( ComBase + LINE_CNTRL,
(unsigned char) status | 0x80 );
baudrate = atol ( Baud );
baudrate = atol(Baud);
if ( baudrate == 0)
baudrate = 2400L;
divisor = (unsigned) ( 115200L / baudrate);
@@ -266,6 +269,24 @@ int ComSendString ( char *string )
return retval;
}
int ComSendData ( char *buffer, unsigned buffer_length )
{
int retval;
char *pointer;
pointer = buffer;
unsigned i;
for (i = 0; i < buffer_length; i++)
{
retval = en_queue ( Serial_Out_Queue, *pointer );
pointer++;
}
if ( 0x0 == (comm_status.modem & 0x40))
RaiseDtr ();
outp ( ComBase + INT_EN, RX_INT | TBE_INT | ERR_INT | RS_INT );
return retval;
}
int ComSendChar ( char character )
{
int retval;