2 * This file is part of the libsigrok project.
4 * Copyright (C) 2020 Andreas Sandberg <andreas@sandberg.pp.se>
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/>.
22 #include <libsigrok/libsigrok.h>
23 #include "libsigrok-internal.h"
25 SR_PRIV int bv_get_value(float *out, const struct binary_value_spec *spec, const void *data, size_t length)
29 if (!out || !spec || !data)
32 #define VALUE_TYPE(T, R, L) \
34 if (spec->offset + (L) > length) \
36 value = R(data + spec->offset); \
40 VALUE_TYPE(BVT_UINT8, R8, sizeof(uint8_t));
42 VALUE_TYPE(BVT_BE_UINT16, RB16, sizeof(uint16_t));
43 VALUE_TYPE(BVT_BE_UINT32, RB32, sizeof(uint32_t));
44 VALUE_TYPE(BVT_BE_UINT64, RB64, sizeof(uint64_t));
45 VALUE_TYPE(BVT_BE_FLOAT, RBFL, sizeof(float));
47 VALUE_TYPE(BVT_LE_UINT16, RL16, sizeof(uint16_t));
48 VALUE_TYPE(BVT_LE_UINT32, RL32, sizeof(uint32_t));
49 VALUE_TYPE(BVT_LE_UINT64, RL64, sizeof(uint64_t));
50 VALUE_TYPE(BVT_LE_FLOAT, RLFL, sizeof(float));
58 *out = value * spec->scale;
62 SR_PRIV int bv_send_analog_channel(const struct sr_dev_inst *sdi, struct sr_channel *ch,
63 const struct binary_analog_channel *bac, const void *data, size_t length)
66 struct sr_analog_encoding encoding;
67 struct sr_analog_meaning meaning;
68 struct sr_analog_spec spec;
69 struct sr_datafeed_analog analog;
70 struct sr_datafeed_packet packet = {
76 err = bv_get_value(&value, &bac->spec, data, length);
80 err = sr_analog_init(&analog, &encoding, &meaning, &spec, bac->digits);
85 meaning.unit = bac->unit;
87 meaning.channels = g_slist_append(NULL, ch);
89 spec.spec_digits = bac->digits;
92 analog.num_samples = 1;
94 err = sr_session_send(sdi, &packet);
101 g_slist_free(meaning.channels);