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ca1a7cb5 BV |
1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2014 Bert Vermeulen <bert@biot.com> | |
5 | * | |
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. | |
10 | * | |
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. | |
15 | * | |
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/>. | |
18 | */ | |
19 | ||
6ec6c43b | 20 | #include <config.h> |
9e45cd41 | 21 | #include <string.h> |
ba464a12 | 22 | #include <strings.h> |
9e45cd41 | 23 | #include <stdarg.h> |
91ef511d | 24 | #include "scpi.h" |
ca1a7cb5 BV |
25 | #include "protocol.h" |
26 | ||
60475cd7 BV |
27 | SR_PRIV int select_channel(const struct sr_dev_inst *sdi, struct sr_channel *ch) |
28 | { | |
29 | struct dev_context *devc; | |
624503ae | 30 | struct pps_channel *cur_pch, *new_pch; |
60475cd7 BV |
31 | int ret; |
32 | ||
33 | if (g_slist_length(sdi->channels) == 1) | |
34 | return SR_OK; | |
35 | ||
36 | devc = sdi->priv; | |
37 | if (ch == devc->cur_channel) | |
38 | return SR_OK; | |
39 | ||
624503ae BV |
40 | new_pch = ch->priv; |
41 | if (devc->cur_channel) { | |
42 | cur_pch = devc->cur_channel->priv; | |
43 | if (cur_pch->hw_output_idx == new_pch->hw_output_idx) { | |
44 | /* Same underlying output channel. */ | |
45 | devc->cur_channel = ch; | |
46 | return SR_OK; | |
47 | } | |
48 | } | |
49 | ||
fa2ce8c7 | 50 | if ((ret = sr_scpi_cmd(sdi, devc->device->commands, SCPI_CMD_SELECT_CHANNEL, |
91ef511d | 51 | new_pch->hwname)) >= 0) |
60475cd7 BV |
52 | devc->cur_channel = ch; |
53 | ||
54 | return ret; | |
55 | } | |
56 | ||
ca1a7cb5 BV |
57 | SR_PRIV int scpi_pps_receive_data(int fd, int revents, void *cb_data) |
58 | { | |
ca1a7cb5 | 59 | struct dev_context *devc; |
9e45cd41 | 60 | struct sr_datafeed_packet packet; |
0de290a5 UH |
61 | struct sr_datafeed_analog analog; |
62 | struct sr_analog_encoding encoding; | |
63 | struct sr_analog_meaning meaning; | |
64 | struct sr_analog_spec spec; | |
9e45cd41 | 65 | const struct sr_dev_inst *sdi; |
60475cd7 | 66 | struct sr_channel *next_channel; |
01b0257a | 67 | struct pps_channel *pch; |
6ed709fe | 68 | const struct channel_spec *ch_spec; |
fa2ce8c7 FS |
69 | int ret; |
70 | float f; | |
71 | GVariant *gvdata; | |
72 | const GVariantType *gvtype; | |
01b0257a | 73 | int cmd; |
ca1a7cb5 BV |
74 | |
75 | (void)fd; | |
9e45cd41 | 76 | (void)revents; |
ca1a7cb5 BV |
77 | |
78 | if (!(sdi = cb_data)) | |
79 | return TRUE; | |
80 | ||
81 | if (!(devc = sdi->priv)) | |
82 | return TRUE; | |
83 | ||
fa2ce8c7 FS |
84 | pch = devc->cur_channel->priv; |
85 | if (pch->mq == SR_MQ_VOLTAGE) { | |
86 | gvtype = G_VARIANT_TYPE_DOUBLE; | |
87 | cmd = SCPI_CMD_GET_MEAS_VOLTAGE; | |
88 | } else if (pch->mq == SR_MQ_FREQUENCY) { | |
89 | gvtype = G_VARIANT_TYPE_DOUBLE; | |
90 | cmd = SCPI_CMD_GET_MEAS_FREQUENCY; | |
91 | } else if (pch->mq == SR_MQ_CURRENT) { | |
92 | gvtype = G_VARIANT_TYPE_DOUBLE; | |
93 | cmd = SCPI_CMD_GET_MEAS_CURRENT; | |
94 | } else if (pch->mq == SR_MQ_POWER) { | |
95 | gvtype = G_VARIANT_TYPE_DOUBLE; | |
96 | cmd = SCPI_CMD_GET_MEAS_POWER; | |
97 | } else { | |
98 | return SR_ERR; | |
9e45cd41 BV |
99 | } |
100 | ||
fa2ce8c7 FS |
101 | //sr_scpi_cmd(sdi, devc->device->commands, cmd, pch->hwname); <- api.c 1x called |
102 | //sr_scpi_cmd(sdi, devc->device->commands, cmd); <- protocol.c xx called | |
103 | ret = sr_scpi_cmd_resp(sdi, devc->device->commands, &gvdata, gvtype, cmd); | |
104 | if (ret != SR_OK) | |
105 | return ret; | |
106 | ||
107 | ch_spec = &devc->device->channels[pch->hw_output_idx]; | |
108 | packet.type = SR_DF_ANALOG; | |
109 | packet.payload = &analog; | |
110 | /* Note: digits/spec_digits will be overridden later. */ | |
111 | sr_analog_init(&analog, &encoding, &meaning, &spec, 0); | |
112 | analog.meaning->channels = g_slist_append(NULL, devc->cur_channel); | |
113 | analog.num_samples = 1; | |
114 | analog.meaning->mq = pch->mq; | |
115 | if (pch->mq == SR_MQ_VOLTAGE) { | |
116 | analog.meaning->unit = SR_UNIT_VOLT; | |
117 | analog.encoding->digits = ch_spec->voltage[4]; | |
118 | analog.spec->spec_digits = ch_spec->voltage[3]; | |
119 | } else if (pch->mq == SR_MQ_CURRENT) { | |
120 | analog.meaning->unit = SR_UNIT_AMPERE; | |
121 | analog.encoding->digits = ch_spec->current[4]; | |
122 | analog.spec->spec_digits = ch_spec->current[3]; | |
123 | } else if (pch->mq == SR_MQ_POWER) { | |
124 | analog.meaning->unit = SR_UNIT_WATT; | |
125 | analog.encoding->digits = ch_spec->power[4]; | |
126 | analog.spec->spec_digits = ch_spec->power[3]; | |
127 | } | |
128 | analog.meaning->mqflags = SR_MQFLAG_DC; | |
129 | f = (float)g_variant_get_double(gvdata); | |
130 | analog.data = &f; | |
131 | sr_session_send(sdi, &packet); | |
132 | g_slist_free(analog.meaning->channels); | |
133 | ||
60475cd7 | 134 | if (g_slist_length(sdi->channels) > 1) { |
9c24d16a | 135 | next_channel = sr_next_enabled_channel(sdi, devc->cur_channel); |
624503ae | 136 | if (select_channel(sdi, next_channel) != SR_OK) { |
60475cd7 BV |
137 | sr_err("Failed to select channel %s", next_channel->name); |
138 | return FALSE; | |
139 | } | |
140 | } | |
01b0257a | 141 | |
ca1a7cb5 BV |
142 | return TRUE; |
143 | } |