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