2010-05-19 21:56:00 +00:00
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/*
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* Hamlib Rotator backend - M2 RC2800
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*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Library General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <math.h>
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#include <ctype.h>
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#include "hamlib/rotator.h"
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#include "serial.h"
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#include "misc.h"
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#include "register.h"
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2010-05-28 14:36:52 +00:00
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#include "num_stdio.h"
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2010-05-19 21:56:00 +00:00
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#include "rc2800.h"
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#define CR "\r"
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2010-05-28 14:36:52 +00:00
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#define LF "\x0a"
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2010-05-19 21:56:00 +00:00
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2010-05-26 07:50:47 +00:00
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#define BUFSZ 128
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2010-05-19 21:56:00 +00:00
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/*
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The continuous output of some of the RC2800
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models can be a nuisance. Even if we flush
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the input stream before sending the command,
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there may be partial sentence in the stream
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ahead of the data we want.
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*/
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/*
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rc2800_parse
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Parse output from the rotator controller
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We want to recognize the following sentences:
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A ERR=<n><cr>
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E ERR=<n><cr>
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A P=<ff.f> S=<n> <s><cr>
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E P=<ff.f> S=<n> <s><cr>
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A=<ff.f> S=<n> <s><cr>
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E=<ff.f> S=<n> <s><cr>
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*/
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static int rc2800_parse (char *s, char *device, float *value)
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{
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int i, msgtype=0, errcode=0;
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2010-05-31 21:00:28 +00:00
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rig_debug(RIG_DEBUG_TRACE, "%s: device return->%s", __func__, s);
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2010-05-19 21:56:00 +00:00
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int len = strlen(s);
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if (len == 0)
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2010-05-26 07:50:47 +00:00
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return -RIG_EPROTO;
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2010-05-19 21:56:00 +00:00
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if (len > 7)
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{
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if (*s == 'A' || *s == 'E')
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{
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*device = *s;
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if (!strncmp(s+2, "ERR=", 4))
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{
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msgtype=1;
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i = sscanf(s+6, "%d", &errcode);
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}
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else if (!strncmp(s+2, "P=", 2))
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{
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msgtype=2;
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2010-05-28 14:36:52 +00:00
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i = num_sscanf(s+5, "%f", value);
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2010-05-19 21:56:00 +00:00
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}
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else if (s[1] == '=')
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{
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msgtype=2;
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2010-05-28 14:36:52 +00:00
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i = num_sscanf(s+2, "%f", value);
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2010-05-19 21:56:00 +00:00
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}
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}
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}
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if (msgtype == 2)
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{
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2010-05-31 21:00:28 +00:00
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rig_debug(RIG_DEBUG_TRACE, "%s: device=%c value=%3.1f\n", __func__, *device, *value);
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2010-05-19 21:56:00 +00:00
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return RIG_OK;
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}
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else if (msgtype == 1)
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{
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2010-05-31 21:00:28 +00:00
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rig_debug(RIG_DEBUG_TRACE, "%s: driver error code %d\n", __func__, errcode);
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2010-05-19 21:56:00 +00:00
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*device = ' ';
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return RIG_OK;
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}
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2010-05-26 07:50:47 +00:00
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return -RIG_EPROTO;
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2010-05-19 21:56:00 +00:00
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}
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#if 0
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int testmain ()
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{
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rc2800_parse("A P= 98.1 S=9 MV");
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rc2800_parse("A P= 100.0 S=9 MV");
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rc2800_parse("E=43.7 S=9 M");
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rc2800_parse("E=42.8 S=9 S");
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rc2800_parse("E ERR=05");
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return 0;
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}
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#endif
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/**
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* rc2800_transaction
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*
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* cmdstr - Command to be sent to the rig.
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* data - Buffer for reply string. Can be NULL, indicating that no reply is
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* is needed, but answer will still be read.
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* data_len - in: Size of buffer. It is the caller's responsibily to provide
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* a large enough buffer for all possible replies for a command.
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*
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* returns:
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* RIG_OK - if no error occured.
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* RIG_EIO - if an I/O error occured while sending/receiving data.
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* RIG_ETIMEOUT - if timeout expires without any characters received.
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*/
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static int
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rc2800_transaction (ROT *rot, const char *cmdstr,
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char *data, size_t data_len)
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{
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struct rot_state *rs;
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int retval;
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int retry_read = 0;
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char replybuf[BUFSZ];
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rs = &rot->state;
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transaction_write:
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serial_flush(&rs->rotport);
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if (cmdstr) {
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retval = write_block(&rs->rotport, cmdstr, strlen(cmdstr));
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if (retval != RIG_OK)
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goto transaction_quit;
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}
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/* Always read the reply to know whether the cmd went OK */
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if (!data)
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data = replybuf;
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if (!data_len)
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data_len = BUFSZ;
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2010-05-26 07:50:47 +00:00
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/* first reply is an echo */
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memset(data,0,data_len);
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2010-05-28 14:36:52 +00:00
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retval = read_string(&rs->rotport, data, data_len, LF, strlen(LF));
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2010-05-26 07:50:47 +00:00
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if (retval < 0) {
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if (retry_read++ < rot->state.rotport.retry)
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goto transaction_write;
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goto transaction_quit;
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}
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/* then comes the answer */
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2010-05-19 21:56:00 +00:00
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memset(data,0,data_len);
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2010-05-28 14:36:52 +00:00
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retval = read_string(&rs->rotport, data, data_len, LF, strlen(LF));
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2010-05-19 21:56:00 +00:00
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if (retval < 0) {
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if (retry_read++ < rot->state.rotport.retry)
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goto transaction_write;
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goto transaction_quit;
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}
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retval = RIG_OK;
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transaction_quit:
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return retval;
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}
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static int
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rc2800_rot_set_position(ROT *rot, azimuth_t az, elevation_t el)
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{
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char cmdstr[64];
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int retval1, retval2;
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2010-05-31 21:00:28 +00:00
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rig_debug(RIG_DEBUG_TRACE, "%s called: %f %f\n", __func__, az, el);
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2010-05-19 21:56:00 +00:00
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2010-05-28 14:36:52 +00:00
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num_sprintf(cmdstr, "A%3.1f"CR, az);
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2010-05-19 21:56:00 +00:00
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retval1 = rc2800_transaction(rot, cmdstr, NULL, 0);
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2010-05-29 22:20:50 +00:00
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/* do not overwhelm the MCU? */
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usleep(200*1000);
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2010-05-28 14:36:52 +00:00
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num_sprintf(cmdstr, "E%3.1f"CR, el);
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2010-05-19 21:56:00 +00:00
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retval2 = rc2800_transaction(rot, cmdstr, NULL, 0);
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if (retval1 == retval2)
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return retval1;
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return (retval1 != RIG_OK ? retval1 : retval2);
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}
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static int
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rc2800_rot_get_position(ROT *rot, azimuth_t *az, elevation_t *el)
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{
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char posbuf[32];
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int retval;
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char device;
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float value;
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2010-05-31 21:00:28 +00:00
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rig_debug(RIG_DEBUG_TRACE, "%s called\n", __func__);
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2010-05-19 21:56:00 +00:00
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retval = rc2800_transaction(rot, "A" CR, posbuf, sizeof(posbuf));
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if (retval != RIG_OK || strlen(posbuf) < 5) {
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return retval < 0 ? retval : -RIG_EPROTO;
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}
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if (rc2800_parse(posbuf, &device, &value) == RIG_OK) {
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if (device == 'A')
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*az = (azimuth_t) value;
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else
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2010-05-26 07:50:47 +00:00
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return -RIG_EPROTO;
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2010-05-19 21:56:00 +00:00
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}
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retval = rc2800_transaction(rot, "E" CR, posbuf, sizeof(posbuf));
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if (retval != RIG_OK || strlen(posbuf) < 5) {
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return retval < 0 ? retval : -RIG_EPROTO;
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}
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if (rc2800_parse(posbuf, &device, &value) == RIG_OK) {
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if (device == 'E')
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*el = (elevation_t) value;
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else
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2010-05-26 07:50:47 +00:00
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return -RIG_EPROTO;
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2010-05-19 21:56:00 +00:00
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}
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rig_debug(RIG_DEBUG_TRACE, "%s: (az, el) = (%.1f, %.1f)\n",
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2010-05-31 21:00:28 +00:00
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__func__, *az, *el);
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2010-05-19 21:56:00 +00:00
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return RIG_OK;
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}
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static int
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rc2800_rot_stop(ROT *rot)
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{
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int retval;
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2010-05-31 21:00:28 +00:00
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rig_debug(RIG_DEBUG_TRACE, "%s called\n", __func__);
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2010-05-19 21:56:00 +00:00
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/* TODO: check each return value (do we care?) */
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/* Stop AZ*/
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retval = rc2800_transaction(rot, "A" CR, NULL, 0); /* select AZ */
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retval = rc2800_transaction(rot, "S" CR, NULL, 0); /* STOP */
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2010-05-29 22:20:50 +00:00
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/* do not overwhelm the MCU? */
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usleep(200*1000);
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2010-05-19 21:56:00 +00:00
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/* Stop EL*/
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retval = rc2800_transaction(rot, "E" CR, NULL, 0); /* select EL */
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retval = rc2800_transaction(rot, "S" CR, NULL, 0); /* STOP */
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return retval;
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}
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/* ************************************************************************* */
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/*
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* M2 RC2800 rotator capabilities.
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2010-05-26 07:50:47 +00:00
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*
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* Protocol documentation: http://www.confluentdesigns.com/files/PdfFiles/devguide_24.pdf
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2010-05-19 21:56:00 +00:00
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*/
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const struct rot_caps rc2800_rot_caps = {
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.rot_model = ROT_MODEL_RC2800,
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.model_name = "RC2800",
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.mfg_name = "M2",
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.version = "0.1",
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.copyright = "LGPL",
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2010-05-28 14:36:52 +00:00
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.status = RIG_STATUS_BETA,
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2010-05-19 21:56:00 +00:00
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.rot_type = ROT_TYPE_AZEL,
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.port_type = RIG_PORT_SERIAL,
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.serial_rate_min = 9600,
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.serial_rate_max = 9600,
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.serial_data_bits = 8,
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.serial_stop_bits = 1,
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.serial_parity = RIG_PARITY_NONE,
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.serial_handshake = RIG_HANDSHAKE_NONE,
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.write_delay = 0,
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2010-05-29 22:20:50 +00:00
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.post_write_delay = 0,
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.timeout = 1000,
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2010-05-19 21:56:00 +00:00
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.retry = 3,
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.min_az = 0.0,
|
2010-05-28 14:36:52 +00:00
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.max_az = 360.0,
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2010-05-19 21:56:00 +00:00
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.min_el = 0.0,
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.max_el = 180.0,
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.get_position = rc2800_rot_get_position,
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.set_position = rc2800_rot_set_position,
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.stop = rc2800_rot_stop,
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};
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/* ************************************************************************* */
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DECLARE_INITROT_BACKEND(m2)
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{
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rig_debug(RIG_DEBUG_VERBOSE, "%s called\n", __FUNCTION__);
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rot_register(&rc2800_rot_caps);
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return RIG_OK;
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}
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/* ************************************************************************* */
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/* end of file */
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