1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
202 lines
6.6 KiB
C
202 lines
6.6 KiB
C
/*
|
|
usa28msg.h
|
|
|
|
Copyright (C) 1998-2000 InnoSys Incorporated. All Rights Reserved
|
|
This file is available under a BSD-style copyright
|
|
|
|
Keyspan USB Async Message Formats for the USA26X
|
|
|
|
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) 1998-2000 InnoSys Incorporated. All Rights Reserved
|
|
|
|
This file is available under a BSD-style copyright
|
|
|
|
2. The name of InnoSys Incorporated 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.
|
|
|
|
Note: these message formats are common to USA18, USA19, and USA28;
|
|
(for USA28X, see usa26msg.h)
|
|
|
|
Buffer formats for RX/TX data messages are not defined by
|
|
a structure, but are described here:
|
|
|
|
USB OUT (host -> USA28, transmit) messages contain a
|
|
REQUEST_ACK indicator (set to 0xff to request an ACK at the
|
|
completion of transmit; 0x00 otherwise), followed by data.
|
|
If the port is configured for parity, the data will be an
|
|
alternating string of parity and data bytes, so the message
|
|
format will be:
|
|
|
|
RQSTACK PAR DAT PAR DAT ...
|
|
|
|
so the maximum length is 63 bytes (1 + 62, or 31 data bytes);
|
|
always an odd number for the total message length.
|
|
|
|
If there is no parity, the format is simply:
|
|
|
|
RQSTACK DAT DAT DAT ...
|
|
|
|
with a total data length of 63.
|
|
|
|
USB IN (USA28 -> host, receive) messages contain data and parity
|
|
if parity is configred, thusly:
|
|
|
|
DAT PAR DAT PAR DAT PAR ...
|
|
|
|
for a total of 32 data bytes;
|
|
|
|
If parity is not configured, the format is:
|
|
|
|
DAT DAT DAT ...
|
|
|
|
for a total of 64 data bytes.
|
|
|
|
In the TX messages (USB OUT), the 0x01 bit of the PARity byte is
|
|
the parity bit. In the RX messages (USB IN), the PARity byte is
|
|
the content of the 8051's status register; the parity bit
|
|
(RX_PARITY_BIT) is the 0x04 bit.
|
|
|
|
revision history:
|
|
|
|
1999may06 add resetDataToggle to control message
|
|
2000mar21 add rs232invalid to status response message
|
|
2000apr04 add 230.4Kb definition to setBaudRate
|
|
2000apr13 add/remove loopbackMode switch
|
|
2000apr13 change definition of setBaudRate to cover 115.2Kb, too
|
|
2000jun01 add extended BSD-style copyright text
|
|
*/
|
|
|
|
#ifndef __USA28MSG__
|
|
#define __USA28MSG__
|
|
|
|
|
|
struct keyspan_usa28_portControlMessage
|
|
{
|
|
/*
|
|
there are four 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 USA28):
|
|
*/
|
|
u8 setBaudRate, // 0=don't set, 1=baudLo/Hi, 2=115.2K, 3=230.4K
|
|
baudLo, // host does baud divisor calculation
|
|
baudHi; // baudHi is only used for first port (gives lower rates)
|
|
|
|
/*
|
|
2. configuration changes which are done every time (because it's
|
|
hardly more trouble to do them than to check whether to do them):
|
|
*/
|
|
u8 parity, // 1=use parity, 0=don't
|
|
ctsFlowControl, // all except 19Q: 1=use CTS flow control, 0=don't
|
|
// 19Q: 0x08:CTSflowControl 0x10:DSRflowControl
|
|
xonFlowControl, // 1=use XON/XOFF flow control, 0=don't
|
|
rts, // 1=on, 0=off
|
|
dtr; // 1=on, 0=off
|
|
|
|
/*
|
|
3. configuration data which is simply used as is (no overhead,
|
|
but must be correct in every host message).
|
|
*/
|
|
u8 forwardingLength, // forward when this number of chars available
|
|
forwardMs, // forward this many ms after last rx data
|
|
breakThreshold, // specified in ms, 1-255 (see note below)
|
|
xonChar, // specified in current character format
|
|
xoffChar; // specified in current character format
|
|
|
|
/*
|
|
4. commands which are flags only; these are processed in order
|
|
(so that, e.g., if both _txOn and _txOff flags are set, the
|
|
port ends in a TX_OFF state); any non-zero value is respected
|
|
*/
|
|
u8 _txOn, // enable transmitting (and continue if there's data)
|
|
_txOff, // stop transmitting
|
|
txFlush, // toss outbound data
|
|
txForceXoff, // pretend we've received XOFF
|
|
txBreak, // turn on break (leave on until txOn clears it)
|
|
rxOn, // turn on receiver
|
|
rxOff, // turn off receiver
|
|
rxFlush, // toss inbound data
|
|
rxForward, // forward all inbound data, NOW
|
|
returnStatus, // return current status n times (1 or 2)
|
|
resetDataToggle;// reset data toggle state to DATA0
|
|
|
|
};
|
|
|
|
struct keyspan_usa28_portStatusMessage
|
|
{
|
|
u8 port, // 0=first, 1=second, 2=global (see below)
|
|
cts,
|
|
dsr, // (not used in all products)
|
|
dcd,
|
|
|
|
ri, // (not used in all products)
|
|
_txOff, // port has been disabled (by host)
|
|
_txXoff, // port is in XOFF state (either host or RX XOFF)
|
|
dataLost, // count of lost chars; wraps; not guaranteed exact
|
|
|
|
rxEnabled, // as configured by rxOn/rxOff 1=on, 0=off
|
|
rxBreak, // 1=we're in break state
|
|
rs232invalid, // 1=no valid signals on rs-232 inputs
|
|
controlResponse;// 1=a control messages has been processed
|
|
};
|
|
|
|
// bit defines in txState
|
|
#define TX_OFF 0x01 // requested by host txOff command
|
|
#define TX_XOFF 0x02 // either real, or simulated by host
|
|
|
|
struct keyspan_usa28_globalControlMessage
|
|
{
|
|
u8 sendGlobalStatus, // 2=request for two status responses
|
|
resetStatusToggle, // 1=reset global status toggle
|
|
resetStatusCount; // a cycling value
|
|
};
|
|
|
|
struct keyspan_usa28_globalStatusMessage
|
|
{
|
|
u8 port, // 3
|
|
sendGlobalStatus, // from request, decremented
|
|
resetStatusCount; // as in request
|
|
};
|
|
|
|
struct keyspan_usa28_globalDebugMessage
|
|
{
|
|
u8 port, // 2
|
|
n, // typically a count/status byte
|
|
b; // typically a data byte
|
|
};
|
|
|
|
// ie: the maximum length of an EZUSB endpoint buffer
|
|
#define MAX_DATA_LEN 64
|
|
|
|
// the parity bytes have only one significant bit
|
|
#define RX_PARITY_BIT 0x04
|
|
#define TX_PARITY_BIT 0x01
|
|
|
|
// update status approx. 60 times a second (16.6666 ms)
|
|
#define STATUS_UPDATE_INTERVAL 16
|
|
|
|
#endif
|
|
|