kopia lustrzana https://github.com/Hamlib/Hamlib
Initial release, some functions gathered from icom.c
git-svn-id: https://hamlib.svn.sourceforge.net/svnroot/hamlib/trunk@167 7ae35d74-ebe9-4afe-98af-79ac388436b8Hamlib-1.1.0
Stéphane Fillod, F8CFE
rodzic
192c9dfe3e
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ce7e2ed323
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/*
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* hamlib - (C) Frank Singleton 2000 (vk3fcs@ix.netcom.com)
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*
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* frame.c - Copyright (C) 2000 Stephane Fillod
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* This module provides a set of low level functions to handle the
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* CI-V interface, used in serial communication to ICOM radios.
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*
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*
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* $Id: frame.c,v 1.1 2000-10-01 12:31:20 f4cfe Exp $
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*
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*
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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*/
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#include <stdlib.h>
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#include <stdio.h> /* Standard input/output definitions */
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#include <string.h> /* String function definitions */
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#include <unistd.h> /* UNIX standard function definitions */
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#include <fcntl.h> /* File control definitions */
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#include <errno.h> /* Error number definitions */
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#include <termios.h> /* POSIX terminal control definitions */
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#include <sys/ioctl.h>
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#include <rig.h>
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#include <riglist.h>
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#include <serial.h>
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#include <misc.h>
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#include "icom.h"
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#include "icom_defs.h"
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#include "frame.h"
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/* Prototypes */
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int read_icom_block(int fd, unsigned char *rxbuffer, size_t count, int timeout);
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/*
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* Build a CI-V frame.
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* The whole frame is placed in frame[],
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* "re_id" is the transceiver's CI-V address,
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* "cmd" is the Command number,
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* "subcmd" is the Sub command number, set to -1 if not present in frame,
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* if the frame has no data, then the "data" pointer must be NULL,
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* and data_len==0.
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* "data_len" holds the Data area length pointed by the "data" pointer.
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* REM: if "data" is NULL, then "data_len" MUST be 0.
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*
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* NB: the frame array must be big enough to hold the frame.
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* The smallest frame is 8 bytes, the biggest is at least 13 bytes.
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*
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* TODO: inline the function?
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*/
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int make_cmd_frame(char frame[], char re_id, char cmd, int subcmd, const char *data, int data_len)
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{
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int i = 0;
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frame[i++] = PAD; /* give old rigs a chance to flush their rx buffers */
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frame[i++] = PR; /* Preamble code */
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frame[i++] = PR;
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frame[i++] = re_id;
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frame[i++] = CTRLID;
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frame[i++] = cmd;
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if (subcmd != -1)
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frame[i++] = subcmd & 0xff;
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if (data_len != 0) {
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memcpy(frame+i, data, data_len);
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i += data_len;
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}
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frame[i++] = FI; /* EOM code */
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return i;
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}
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int make_cmd_frame_freq(char frame[], char re_id, char cmd, int subcmd, freq_t freq, int ic731_mode)
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{
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int freq_len;
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int i = 0;
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frame[i++] = PAD; /* give old rigs a chance to flush their rx buffers */
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frame[i++] = PR; /* Preamble code */
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frame[i++] = PR;
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frame[i++] = re_id;
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frame[i++] = CTRLID;
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frame[i++] = cmd;
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if (subcmd != -1)
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frame[i++] = subcmd & 0xff;
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freq_len = ic731_mode ? 4:5;
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to_bcd(frame+i, freq, freq_len*2); /* to_bcd requires nibble len */
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i += freq_len;
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frame[i++] = FI; /* EOM code */
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return i;
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}
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/*
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* for C_SET_MEM, subcmd=-1
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*/
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int
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make_cmd_frame_chan(char frame[], char re_id, char cmd, int subcmd, int chan)
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{
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int i = 0;
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frame[i++] = PAD; /* give old rigs a chance to flush their rx buffers */
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frame[i++] = PR; /* Preamble code */
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frame[i++] = PR;
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frame[i++] = re_id;
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frame[i++] = CTRLID;
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frame[i++] = cmd;
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if (subcmd != -1)
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frame[i++] = subcmd & 0xff;
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to_bcd(frame+i, (freq_t)chan, 4); /* to_bcd requires nibble len */
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i += 2; /* channel number is on 4 digits = 2 octets */
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frame[i++] = FI; /* EOM code */
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return i;
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}
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/*
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* icom_transaction
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*
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* We assume that rig!=NULL, rig->state!= NULL, payload!=NULL, data!=NULL, data_len!=NULL
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* Otherwise, you'll get a nice seg fault. You've been warned!
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* payload can be NULL if payload_len == 0
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* subcmd can be equal to -1 (no subcmd wanted)
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*/
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int icom_transaction (RIG *rig, int cmd, int subcmd, const char *payload, int payload_len, char *data, int *data_len)
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{
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struct icom_priv_data *priv;
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struct rig_state *rig_s;
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unsigned char buf[16];
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int frm_len,pad_len;
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int i;
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rig_s = &rig->state;
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priv = (struct icom_priv_data*)rig_s->priv;
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frm_len = make_cmd_frame(buf, priv->re_civ_addr, cmd, subcmd,
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payload, payload_len);
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/*
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* should check return code and that write wrote cmd_len chars!
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*/
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write_block(rig_s->fd, buf, frm_len, rig_s->write_delay);
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/*
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* read what we just sent, because TX and RX are looped,
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* and discard it...
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* TODO: - if what we read is not what we sent, then it means
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* a collision on the CI-V bus occured!
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* - if we get a timeout, then retry to send the frame,
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* up to rig_s->retry times.
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*/
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read_icom_block(rig_s->fd, buf, frm_len, rig_s->timeout);
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/*
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* wait for ACK ...
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* FIXME: handle pading/collisions
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*/
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read_icom_block(rig_s->fd, buf, ACKFRMLEN, rig_s->timeout);
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pad_len = 0;
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while (buf[pad_len] == PAD)
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pad_len++;
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/*
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* Even if the return code is NG, make sure the whole frame
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* has been removed from buffers.
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*/
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for (i=ACKFRMLEN; buf[i-1] != FI; i++) {
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read_icom_block(rig_s->fd, buf+i, 1, rig_s->timeout);
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}
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*data_len = i-pad_len-(ACKFRMLEN-1);
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memcpy(data, buf+pad_len+4, *data_len);
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/*
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* TODO: check addresses in reply frame
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*/
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return RIG_OK;
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}
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/*
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* read count usefull bytes, discarding collisions
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* FIXME: check return codes/bytes read
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*/
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int read_icom_block(int fd, unsigned char *rxbuffer, size_t count, int timeout)
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{
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int i;
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read_block(fd, rxbuffer, count, timeout);
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for (i=0; i<count; i++) {
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if (rxbuffer[i] != COL)
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break;
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}
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if (i > 0) {
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memmove(rxbuffer, rxbuffer+i, count-i);
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read_block(fd, rxbuffer+i, count-i, timeout);
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}
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return count; /* duh! */
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}
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@ -0,0 +1,42 @@
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/*
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* hamlib - (C) Frank Singleton 2000 (vk3fcs@ix.netcom.com)
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*
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* frame.h - Copyright (C) 2000 Stephane Fillod
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* This shared library provides an API for communicating
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* via serial interface to an ICOM using the "CI-V" interface.
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*
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*
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* $Id: frame.h,v 1.1 2000-10-01 12:31:20 f4cfe Exp $
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*
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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*/
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#ifndef _FRAME_H
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#define _FRAME_H 1
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/*
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* helper functions
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*/
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int make_cmd_frame(char frame[], char re_id, char cmd, int subcmd, const char *data, int data_len);
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int make_cmd_frame_freq(char frame[], char re_id, char cmd, int subcmd, freq_t freq, int ic731_mode);
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int make_cmd_frame_chan(char frame[], char re_id,char cmd,int subcmd,int chan);
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int icom_transaction (RIG *rig, int cmd, int subcmd, const char *payload, int payload_len, char *data, int *data_len);
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#endif /* _FRAME_H */
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