- Fixed a bug fix with Fixed motor in TAS code
- Made AMOR write HDF-5 data in chunks - Added driver for a PSI-DSP magnet controller as used at SLS - Added code for directly accessing RS232 controllers connected to a terminal server, thereby bypassing the SerPortServer - A rounding problem in the PSD histogram memory was resolved.
This commit is contained in:
cvs
120
rs232controller.w
Normal file
120
rs232controller.w
Normal file
@ -0,0 +1,120 @@
|
||||
\subsection{RS232 Controller}
|
||||
This class provides the basic communication facilities for an arbitrary
|
||||
controller which is connected through a RS-232 cable to a terminal
|
||||
server. This class bypasses David Maden's SerPortServer program. Also this
|
||||
code may be useful for any other controller connected to a TCP/IP
|
||||
network. Basic facilities are provided for writing data to such a device
|
||||
and to read from
|
||||
it. Morevoer there are utility functions for the common case when the
|
||||
device is to send some data terminated with a specified terminator.
|
||||
Timeouts are also observed on reading operations. It is required that this
|
||||
controller accesses a binary port and not a port which uses some kind of
|
||||
telnet negotiation.
|
||||
|
||||
|
||||
This classes data structure:
|
||||
|
||||
@d rs232dat @{
|
||||
typedef struct{
|
||||
pObjectDescriptor pDes;
|
||||
char *sendTerminator;
|
||||
char *replyTerminator;
|
||||
int timeout;
|
||||
mkChannel *pSock;
|
||||
char *pHost;
|
||||
int iPort;
|
||||
} rs232, *prs232;
|
||||
|
||||
@}
|
||||
The fields are:
|
||||
\begin{description}
|
||||
\item[pDes] The standard object descriptor.
|
||||
\item[sendTerminator] The terminator with which to terminate any command.
|
||||
\item[replyTerminator] The terminator expected to end a transmission from the
|
||||
device.
|
||||
\item[timeout] A timeout for reading in microseconds.
|
||||
\item[mkChannel] Our very own structure for a network connection.
|
||||
\item[pHost]The host (mostly the terminal server) to connect to.
|
||||
\item[iPort] The port at host to which to connect.
|
||||
\end{description}
|
||||
|
||||
The following interface functions are provided:
|
||||
|
||||
@d rs232int @{
|
||||
int RS232Action(SConnection *pCon, SicsInterp *pSics,
|
||||
void *pData, int argc, char *argv[]);
|
||||
int RS232Factory(SConnection *pCon, SicsInterp *pSics,
|
||||
void *pData, int argc, char *argv[]);
|
||||
|
||||
void setRS232SendTerminator(prs232 self, char *term);
|
||||
void setRS232ReplyTerminator(prs232 self, char *term);
|
||||
void setRS232Timeout(prs232 self, int timeout);
|
||||
int writeRS232(prs232 self, void *data, int dataLen);
|
||||
int readRS232(prs232 self, void *data, int *dataLen);
|
||||
int availableRS232(prs232 self);
|
||||
int transactRS232(prs232 self, void *send, int sendLen,
|
||||
void *reply, int replylen);
|
||||
void getRS232Error(int iCode, char *errorBuffer,
|
||||
int errorBufferLen);
|
||||
int initRS232(prs232 self);
|
||||
@}
|
||||
|
||||
All functions take a pointer to their daat structure as a parameter.
|
||||
When the functions return an integer, 1 measn successful completion,
|
||||
anything else is an error code if not stated otherwise.
|
||||
The functions have the following meanings:
|
||||
\begin{description}
|
||||
\item[RS232Action] The interpreter interface functon for the controller.
|
||||
\item[RS232Factory] The factory function for configuring an interpreter.
|
||||
\item[setRS232SendTerm] sets the terminator with which each command is
|
||||
terminated.
|
||||
\item[setRS232ReplyTerminator] sets the expected terminator in a reply from
|
||||
the device.
|
||||
\item[setRS232Timeout] sets the timeout for reading from the device. The value
|
||||
is in microseconds.
|
||||
\item[writeRS232] writes dataLen bytes from data to the device.
|
||||
\item[readRS232] reads at max dataLen bytes from the device. dataLen is set
|
||||
to the actual number of bytes read.
|
||||
\item[transactRS232] sends sendLen bytes from send to the device and then
|
||||
reads from the device until the reply terminator has been found. At max
|
||||
replyLen bytes of reply are copied to reply.
|
||||
\item[availableRS232] returns 1 if data is available, o if none is available
|
||||
and a negative value if an error occurs.
|
||||
\item[getRS232Error] gets a string representation for the error code
|
||||
iCode.
|
||||
\item[initRS232] tries to close and reopen the RS232 connection. This is
|
||||
useful for the automatic fixing of communication problems encountered.
|
||||
\end{description}
|
||||
|
||||
@o rs232controller.h @{
|
||||
/*---------------------------------------------------------------------
|
||||
R S 2 3 2 C o n t r o l l e r
|
||||
|
||||
A general object which represents a controller connected to the network
|
||||
via a terminal server. This bypasses David Maden's SerPortServer software.
|
||||
Basic facilities are provided for writinga nd reading to and from the
|
||||
device. For more information see the rs232controller.tex file.
|
||||
|
||||
copyright: see copyright.h
|
||||
|
||||
Mark Koennecke, October 2001
|
||||
-----------------------------------------------------------------------*/
|
||||
#ifndef RS232CONTROLLER
|
||||
#define RS232CONTROLLER
|
||||
#include "network.h"
|
||||
|
||||
/*----------------------- a data structure ----------------------------*/
|
||||
@<rs232dat@>
|
||||
|
||||
/*----------------------- the interface functions --------------------*/
|
||||
@<rs232int@>
|
||||
|
||||
#endif
|
||||
@}
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
Reference in New Issue
Block a user