2 * This file is part of the sigrok project.
4 * Copyright (C) 2012 Bert Vermeulen <bert@biot.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/>.
23 #include "libsigrok.h"
24 #include "libsigrok-internal.h"
28 int num_enabled_probes;
33 static int init(struct sr_output *o)
36 struct sr_probe *probe;
39 sr_spew("output/analog: initializing");
43 if (!(ctx = g_try_malloc0(sizeof(struct context)))) {
44 sr_err("output/analog: Context malloc failed.");
49 /* Get the number of probes and their names. */
50 ctx->probelist = g_ptr_array_new();
51 for (l = o->sdi->probes; l; l = l->next) {
53 if (!probe || !probe->enabled)
55 g_ptr_array_add(ctx->probelist, probe->name);
56 ctx->num_enabled_probes++;
59 ctx->out = g_string_sized_new(512);
64 static void si_printf(float value, GString *out, char *unitstr)
73 if (v < 1e-12 || v > 1e+12)
74 g_string_append_printf(out, "%f %s", value, unitstr);
76 g_string_append_printf(out, "%f G%s", value / 1e+9, unitstr);
78 g_string_append_printf(out, "%f M%s", value / 1e+6, unitstr);
80 g_string_append_printf(out, "%f k%s", value / 1e+3, unitstr);
82 g_string_append_printf(out, "%f n%s", value * 1e+9, unitstr);
84 g_string_append_printf(out, "%f u%s", value * 1e+6, unitstr);
86 g_string_append_printf(out, "%f m%s", value * 1e+3, unitstr);
88 g_string_append_printf(out, "%f %s", value, unitstr);
92 static void fancyprint(int unit, int mqflags, float value, GString *out)
97 si_printf(value, out, "V");
100 si_printf(value, out, "A");
103 si_printf(value, out, "");
104 g_string_append_unichar(out, 0x2126);
107 si_printf(value, out, "F");
110 si_printf(value, out, "K");
112 case SR_UNIT_CELSIUS:
113 si_printf(value, out, "");
114 g_string_append_unichar(out, 0x00b0);
115 g_string_append_c(out, 'C');
117 case SR_UNIT_FAHRENHEIT:
118 si_printf(value, out, "");
119 g_string_append_unichar(out, 0x00b0);
120 g_string_append_c(out, 'F');
123 si_printf(value, out, "Hz");
125 case SR_UNIT_PERCENTAGE:
126 g_string_append_printf(out, "%f%%", value);
128 case SR_UNIT_BOOLEAN:
130 g_string_append_printf(out, "TRUE");
132 g_string_append_printf(out, "FALSE");
135 si_printf(value, out, "s");
137 case SR_UNIT_SIEMENS:
138 si_printf(value, out, "S");
140 case SR_UNIT_DECIBEL_MW:
141 si_printf(value, out, "dBu");
143 case SR_UNIT_DECIBEL_VOLT:
144 si_printf(value, out, "dBV");
147 si_printf(value, out, "");
149 if ((mqflags & (SR_MQFLAG_AC | SR_MQFLAG_DC)) == (SR_MQFLAG_AC | SR_MQFLAG_DC))
150 g_string_append_printf(out, " AC+DC");
151 else if (mqflags & SR_MQFLAG_AC)
152 g_string_append_printf(out, " AC");
153 else if (mqflags & SR_MQFLAG_DC)
154 g_string_append_printf(out, " DC");
155 g_string_append_c(out, '\n');
159 static GString *receive(struct sr_output *o, const struct sr_dev_inst *sdi,
160 struct sr_datafeed_packet *packet)
162 struct sr_datafeed_analog *analog;
172 g_string_set_size(ctx->out, 0);
173 switch (packet->type) {
176 case SR_DF_FRAME_BEGIN:
177 g_string_append_printf(ctx->out, "FRAME-BEGIN\n");
179 case SR_DF_FRAME_END:
180 g_string_append_printf(ctx->out, "FRAME-END\n");
183 analog = packet->payload;
184 fdata = (float *)analog->data;
185 for (i = 0; i < analog->num_samples; i++) {
186 for (j = 0; j < ctx->num_enabled_probes; j++) {
187 g_string_append_printf(ctx->out, "%s: ",
188 (char *)g_ptr_array_index(ctx->probelist, j));
189 fancyprint(analog->unit, analog->mqflags,
190 fdata[i + j], ctx->out);
199 static int cleanup(struct sr_output *o)
207 g_ptr_array_free(ctx->probelist, 1);
208 g_string_free(ctx->out, 1);
216 SR_PRIV struct sr_output_format output_analog = {
218 .description = "Analog data",
219 .df_type = SR_DF_ANALOG,