// bus locking at a higher level
GOOD_OR_BAD DS2480_detect(struct port_in *pin)
{
struct connection_in * in = pin->first ;
if (pin->init_data == NULL) {
LEVEL_DEFAULT("DS2480B-based bus master needs a port name");
return gbBAD;
}
/* Set up low-level routines */
DS2480_setroutines(in);
in->overdrive = 0 ;
in->flex = Globals.serial_flextime ;
pin->busmode = bus_serial;
// Now set desired baud and polarity
// BUS_reset will do the actual changes
in->master.serial.reverse_polarity = Globals.serial_reverse ;
COM_set_standard( in ) ; // standard COM port settings
// first pass with hardware flow control
RETURN_GOOD_IF_GOOD( DS2480_detect_serial(in) ) ;
pin->flow = flow_second; // flow control
RETURN_BAD_IF_BAD(COM_change(in)) ;
return DS2480_detect_serial(in) ;
}
static void LINK_set_baud(struct connection_in * in)
{
struct port_in * pin = in->pown ;
char * speed_code ;
if ( pin->type == ct_telnet ) {
// telnet pinned at 115200
return ;
}
COM_BaudRestrict( &(pin->baud), B9600, B19200, B38400, B57600, 0 ) ;
LEVEL_DEBUG("to %d",COM_BaudRate(pin->baud));
// Find rate parameter
switch ( pin->baud ) {
case B9600:
COM_break(in) ;
LINK_flush(in);
return ;
case B19200:
speed_code = "," ;
break ;
case B38400:
speed_code = "`" ;
break ;
#ifdef B57600
/* MacOSX support max 38400 in termios.h ? */
case B57600:
speed_code = "^" ;
break ;
#endif
default:
LEVEL_DEBUG("Unrecognized baud rate");
return ;
}
LEVEL_DEBUG("LINK change baud string <%s>",speed_code);
LINK_flush(in);
if ( BAD( LINK_write(LINK_string(speed_code), 1, in) ) ) {
LEVEL_DEBUG("LINK change baud error -- will return to 9600");
pin->baud = B9600 ;
++in->changed_bus_settings ;
return ;
}
// Send configuration change
LINK_flush(in);
// Change OS view of rate
UT_delay(5);
COM_change(in) ;
UT_delay(5);
LINK_slurp(in);
return ;
}
/* Puts in 9600 baud */
static GOOD_OR_BAD DS9097_pre_reset(struct connection_in *in )
{
struct port_in * pin = in->pown ;
RETURN_BAD_IF_BAD( COM_test(in) ) ;
/* 8 data bits */
pin->bits = 8 ;
pin->baud = B9600 ;
if ( BAD( COM_change(in)) ) {
ERROR_CONNECT("Cannot set attributes: %s", SAFESTRING(DEVICENAME(in)));
DS9097_post_reset( in ) ;
return gbBAD;
}
return gbGOOD;
}
/* Restore terminal settings (serial port settings) */
static void DS9097_post_reset(struct connection_in *in )
{
struct port_in * pin = in->pown ;
if (Globals.eightbit_serial) {
/* coninue with 8 data bits */
pin->bits = 8;
} else {
/* 6 data bits, Receiver enabled, Hangup, Dont change "owner" */
pin->bits = 6;
}
#ifndef B115200
/* MacOSX support max 38400 in termios.h ? */
pin->baud = B38400 ;
#else
pin->baud = B115200 ;
#endif
/* Flush the input and output buffers */
COM_flush(in); // Adds no appreciable time
COM_change(in) ;
}
// no bus locking here (higher up)
GOOD_OR_BAD DS9097_detect(struct port_in *pin)
{
struct connection_in * in = pin->first ;
/* Set up low-level routines */
DS9097_setroutines(in);
in->Adapter = adapter_DS9097;
// in->adapter_name already set, to support HA3 and HA4B
pin->busmode = bus_passive; // in case initially tried DS9097U
/* open the COM port in 9600 Baud */
COM_set_standard( in ) ; // standard COM port settings
pin->vmin = 1; // minimum chars
pin->vtime = 0; // decisec wait
if (pin->init_data == NULL) {
LEVEL_DEFAULT("DS9097 (passive) busmaster requires port name");
return gbBAD;
}
RETURN_BAD_IF_BAD(COM_open(in)) ;
pin->flow = flow_first; // flow control
switch( DS9097_reset_in(in) ) {
case BUS_RESET_OK:
case BUS_RESET_SHORT:
return gbGOOD ;
default:
break ;
}
if ( GOOD(serial_powercycle(in)) ) {
switch( DS9097_reset_in(in) ) {
case BUS_RESET_OK:
case BUS_RESET_SHORT:
return gbGOOD ;
default:
break ;
}
}
/* open the COM port in 9600 Baud */
/* Second pass */
pin->flow = flow_second ;
RETURN_BAD_IF_BAD(COM_change(in)) ;
switch( DS9097_reset_in(in) ) {
case BUS_RESET_OK:
case BUS_RESET_SHORT:
return gbGOOD ;
default:
break ;
}
/* open the COM port in 9600 Baud */
/* Third pass, hardware flow control */
pin->flow = flow_first ;
RETURN_BAD_IF_BAD(COM_change(in)) ;
switch( DS9097_reset_in(in) ) {
case BUS_RESET_OK:
case BUS_RESET_SHORT:
return gbGOOD ;
default:
break ;
}
return gbBAD ;
}
