Hamlib/rigs/yaesu/ft747.h

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2.4 KiB
C

/*
* hamlib - (C) Frank Singleton 2000 (vk3fcs@@ix.netcom.com)
* (C) Stephane Fillod 2000-2010
*
* ft747.h - (C) Frank Singleton 2000 (vk3fcs@@ix.netcom.com)
* This shared library provides an API for communicating
* via serial interface to an FT-747GX using the "CAT" interface
* box (FIF-232C) or similar (max232 + some capacitors :-)
*
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifndef _FT747_H
#define _FT747_H 1
/*
* According to manual, the UPDATE data length should be 345
* but some rigs are short by one byte.
*/
#define FT747_STATUS_UPDATE_DATA_LENGTH 344
#define FT747_PACING_DEFAULT_VALUE 0
#define FT747_WRITE_DELAY 5 /* manual say 50 ms, but it doesn't work though */
/* Sequential fast writes confuse my FT747 without this delay */
#define FT747_POST_WRITE_DELAY 5
/*
* 8N2 and 1 start bit = 11 bits at 4800 bps => effective byte rate = 1 byte in 2.2917 msec
* => 345 bytes in 790 msec
*
* delay for 1 byte = 2.2917 + (pace_interval * 5)
*
* pace_interval time to read 345 bytes
* ------------ ----------------------
*
* 0 790 msec
* 1 2515 msec
* 2 4240 msec
* 255 441 sec => 7 min 21 seconds
*
*/
/*
* The time the status block is cached (in millisec).
* This optimises the common case of doing eg. rig_get_freq() and
* rig_get_mode() in a row.
*
* The timeout is set to at least the time to transfer the block (790ms)
* plus post write delay, plus some margin, but less than 1 second,
* which may be typical polling period.
*/
#define FT747_CACHE_TIMEOUT 900
#endif /* _FT747_H */