kopia lustrzana https://github.com/Hamlib/Hamlib
76 wiersze
2.4 KiB
C
76 wiersze
2.4 KiB
C
/*
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* hamlib - (C) Frank Singleton 2000 (vk3fcs@@ix.netcom.com)
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* (C) Stephane Fillod 2000-2010
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*
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* ft747.h - (C) Frank Singleton 2000 (vk3fcs@@ix.netcom.com)
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* This shared library provides an API for communicating
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* via serial interface to an FT-747GX using the "CAT" interface
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* box (FIF-232C) or similar (max232 + some capacitors :-)
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*
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifndef _FT747_H
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#define _FT747_H 1
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/*
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* According to manual, the UPDATE data length should be 345
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* but some rigs are short by one byte.
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*/
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#define FT747_STATUS_UPDATE_DATA_LENGTH 344
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#define FT747_PACING_DEFAULT_VALUE 0
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#define FT747_WRITE_DELAY 5 /* manual say 50 ms, but it doesn't work though */
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/* Sequential fast writes confuse my FT747 without this delay */
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#define FT747_POST_WRITE_DELAY 5
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/*
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* 8N2 and 1 start bit = 11 bits at 4800 bps => effective byte rate = 1 byte in 2.2917 msec
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* => 345 bytes in 790 msec
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*
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* delay for 1 byte = 2.2917 + (pace_interval * 5)
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*
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* pace_interval time to read 345 bytes
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* ------------ ----------------------
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*
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* 0 790 msec
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* 1 2515 msec
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* 2 4240 msec
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* 255 441 sec => 7 min 21 seconds
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*
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*/
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/*
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* The time the status block is cached (in millisec).
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* This optimises the common case of doing eg. rig_get_freq() and
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* rig_get_mode() in a row.
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*
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* The timeout is set to at least the time to transfer the block (790ms)
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* plus post write delay, plus some margin as get_freq was taking > 1000ms
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*/
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#define FT747_CACHE_TIMEOUT 1500
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#endif /* _FT747_H */
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