83 lines
2.4 KiB
C
83 lines
2.4 KiB
C
/*
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* This file is part of the libsigrok project.
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*
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* Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (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, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef LIBSIGROK_HARDWARE_SERIAL_DMM_PROTOCOL_H
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#define LIBSIGROK_HARDWARE_SERIAL_DMM_PROTOCOL_H
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#define LOG_PREFIX "serial-dmm"
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struct dmm_info {
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/** libsigrok driver info struct. */
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struct sr_dev_driver di;
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/** Manufacturer/brand. */
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const char *vendor;
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/** Model. */
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const char *device;
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/** serialconn string. */
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const char *conn;
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/** Packet size in bytes. */
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int packet_size;
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/**
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* Request timeout [ms] before request is considered lost and a new
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* one is sent. Used only if device needs polling.
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*/
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int64_t req_timeout_ms;
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/**
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* Delay between reception of packet and next request. Some DMMs
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* need this. Used only if device needs polling.
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*/
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int64_t req_delay_ms;
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/** Packet request function. */
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int (*packet_request)(struct sr_serial_dev_inst *);
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/** Number of channels / displays. */
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size_t channel_count;
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/** (Optional) printf formats for channel names. */
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const char **channel_formats;
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/** Packet validation function. */
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gboolean (*packet_valid)(const uint8_t *);
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/** Packet parsing function. */
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int (*packet_parse)(const uint8_t *, float *,
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struct sr_datafeed_analog *, void *);
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/** */
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void (*dmm_details)(struct sr_datafeed_analog *, void *);
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/** Size of chipset info struct. */
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gsize info_size;
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};
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#define DMM_BUFSIZE 256
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struct dev_context {
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struct sr_sw_limits limits;
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uint8_t buf[DMM_BUFSIZE];
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int bufoffset;
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int buflen;
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/**
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* The timestamp [µs] to send the next request.
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* Used only if device needs polling.
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*/
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int64_t req_next_at;
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};
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SR_PRIV int req_packet(struct sr_dev_inst *sdi);
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SR_PRIV int receive_data(int fd, int revents, void *cb_data);
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#endif
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