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/*
usa90msg.h
Copyright (c) 1998-2003 InnoSys Incorporated. All Rights Reserved
This file is available under a BSD-style copyright
Keyspan USB Async Message Formats for the USA19HS
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
1. Redistributions of source code must retain this licence text
without modification, this list of conditions, and the following
disclaimer. The following copyright notice must appear immediately at
the beginning of all source files:
Copyright (c) 1998-2003 InnoSys Incorporated. All Rights Reserved
This file is available under a BSD-style copyright
2. The name of InnoSys Incorprated may not be used to endorse or promote
products derived from this software without specific prior written
permission.
THIS SOFTWARE IS PROVIDED BY INNOSYS CORP. ``AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
Revisions:
2003feb14 add setTxMode/txMode and cancelRxXoff to portControl
2003mar21 change name of PARITY_0/1 to add MARK/SPACE
*/
#ifndef __USA90MSG__
#define __USA90MSG__
struct keyspan_usa90_portControlMessage
{
/*
there are three types of "commands" sent in the control message:
1. configuration changes which must be requested by setting
the corresponding "set" flag (and should only be requested
when necessary, to reduce overhead on the device):
*/
u8 setClocking, // host requests baud rate be set
baudLo, // host does baud divisor calculation
baudHi, // host does baud divisor calculation
setLcr, // host requests lcr be set
lcr, // use PARITY, STOPBITS, DATABITS below
setRxMode, // set receive mode
rxMode, // RXMODE_DMA or RXMODE_BYHAND
setTxMode, // set transmit mode
txMode, // TXMODE_DMA or TXMODE_BYHAND
setTxFlowControl, // host requests tx flow control be set
txFlowControl , // use TX_FLOW... bits below
setRxFlowControl, // host requests rx flow control be set
rxFlowControl, // use RX_FLOW... bits below
sendXoff, // host requests XOFF transmitted immediately
sendXon, // host requests XON char transmitted
xonChar, // specified in current character format
xoffChar, // specified in current character format
sendChar, // host requests char transmitted immediately
txChar, // character to send
setRts, // host requests RTS output be set
rts, // 1=on, 0=off
setDtr, // host requests DTR output be set
dtr; // 1=on, 0=off
/*
2. configuration data which is simply used as is
and must be specified correctly in every host message.
*/
u8 rxForwardingLength, // forward when this number of chars available
rxForwardingTimeout, // (1-31 in ms)
txAckSetting; // 0=don't ack, 1=normal, 2-255 TBD...
/*
3. Firmware states which cause actions if they change
and must be specified correctly in every host message.
*/
u8 portEnabled, // 0=disabled, 1=enabled
txFlush, // 0=normal, 1=toss outbound data
txBreak, // 0=break off, 1=break on
loopbackMode; // 0=no loopback, 1=loopback enabled
/*
4. commands which are flags only; these are processed in order
(so that, e.g., if rxFlush and rxForward flags are set, the
port will have no data to forward); any non-zero value
is respected
*/
u8 rxFlush, // toss inbound data
rxForward, // forward all inbound data, NOW (as if fwdLen==1)
cancelRxXoff, // cancel any receive XOFF state (_txXoff)
returnStatus; // return current status NOW
};
// defines for bits in lcr
#define USA_DATABITS_5 0x00
#define USA_DATABITS_6 0x01
#define USA_DATABITS_7 0x02
#define USA_DATABITS_8 0x03
#define STOPBITS_5678_1 0x00 // 1 stop bit for all byte sizes
#define STOPBITS_5_1p5 0x04 // 1.5 stop bits for 5-bit byte
#define STOPBITS_678_2 0x04 // 2 stop bits for 6-8 bit byte
#define USA_PARITY_NONE 0x00
#define USA_PARITY_ODD 0x08
#define USA_PARITY_EVEN 0x18
#define PARITY_MARK_1 0x28 // force parity MARK
#define PARITY_SPACE_0 0x38 // force parity SPACE
#define TXFLOW_CTS 0x04
#define TXFLOW_DSR 0x08
#define TXFLOW_XOFF 0x01
#define TXFLOW_XOFF_ANY 0x02
#define TXFLOW_XOFF_BITS (TXFLOW_XOFF | TXFLOW_XOFF_ANY)
#define RXFLOW_XOFF 0x10
#define RXFLOW_RTS 0x20
#define RXFLOW_DTR 0x40
#define RXFLOW_DSR_SENSITIVITY 0x80
#define RXMODE_BYHAND 0x00
#define RXMODE_DMA 0x02
#define TXMODE_BYHAND 0x00
#define TXMODE_DMA 0x02
// all things called "StatusMessage" are sent on the status endpoint
struct keyspan_usa90_portStatusMessage
{
u8 msr, // reports the actual MSR register
cts, // reports CTS pin
dcd, // reports DCD pin
dsr, // reports DSR pin
ri, // reports RI pin
_txXoff, // port is in XOFF state (we received XOFF)
rxBreak, // reports break state
rxOverrun, // count of overrun errors (since last reported)
rxParity, // count of parity errors (since last reported)
rxFrame, // count of frame errors (since last reported)
portState, // PORTSTATE_xxx bits (useful for debugging)
messageAck, // message acknowledgement
charAck, // character acknowledgement
controlResponse; // (value = returnStatus) a control message has been processed
};
// bits in RX data message when STAT byte is included
#define RXERROR_OVERRUN 0x02
#define RXERROR_PARITY 0x04
#define RXERROR_FRAMING 0x08
#define RXERROR_BREAK 0x10
#define PORTSTATE_ENABLED 0x80
#define PORTSTATE_TXFLUSH 0x01
#define PORTSTATE_TXBREAK 0x02
#define PORTSTATE_LOOPBACK 0x04
// MSR bits
#define USA_MSR_dCTS 0x01 // CTS has changed since last report
#define USA_MSR_dDSR 0x02
#define USA_MSR_dRI 0x04
#define USA_MSR_dDCD 0x08
#define USA_MSR_CTS 0x10 // current state of CTS
#define USA_MSR_DSR 0x20
#define USA_USA_MSR_RI 0x40
#define MSR_DCD 0x80
// ie: the maximum length of an endpoint buffer
#define MAX_DATA_LEN 64
#endif
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