2 * This file is part of the libsigrok project.
4 * Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
20 #ifndef LIBSIGROK_HARDWARE_BRYMEN_DMM_PROTOCOL_H
21 #define LIBSIGROK_HARDWARE_BRYMEN_DMM_PROTOCOL_H
28 #include <libsigrok/libsigrok.h>
29 #include "libsigrok-internal.h"
31 #define LOG_PREFIX "brymen-dmm"
33 #define DMM_BUFSIZE 256
35 enum packet_len_status {
37 PACKET_NEED_MORE_DATA,
38 PACKET_INVALID_HEADER,
41 /** Private, per-device-instance driver context. */
43 /** The current sampling limit (in number of samples). */
44 uint64_t limit_samples;
46 /** The current sampling limit (in ms). */
49 /** Opaque pointer passed in by the frontend. */
52 /** The current number of already received samples. */
55 /** Start time of acquisition session */
58 uint8_t buf[DMM_BUFSIZE];
65 * Callback that assesses the size and status of the incoming packet.
67 * @return PACKET_HEADER_OK - This is a proper packet header.
68 * PACKET_NEED_MORE_DATA The buffer does not contain the entire header.
69 * PACKET_INVALID_HEADER Not a valid start of packet.
71 typedef int (*packet_length_t)(const uint8_t *buf, int *len);
73 SR_PRIV int brymen_dmm_receive_data(int fd, int revents, void *cb_data);
74 SR_PRIV int brymen_packet_request(struct sr_serial_dev_inst *serial);
76 SR_PRIV int brymen_packet_length(const uint8_t *buf, int *len);
77 SR_PRIV gboolean brymen_packet_is_valid(const uint8_t *buf);
79 SR_PRIV int brymen_parse(const uint8_t *buf, float *floatval,
80 struct sr_datafeed_analog_old *analog, void *info);
82 SR_PRIV int brymen_stream_detect(struct sr_serial_dev_inst *serial,
83 uint8_t *buf, size_t *buflen,
84 packet_length_t get_packet_size,
85 packet_valid_callback is_valid,
86 uint64_t timeout_ms, int baudrate);