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/>.
24 #include "libsigrok.h"
25 #include "libsigrok-internal.h"
29 int num_enabled_probes;
35 static int init(struct sr_output *o)
38 struct sr_probe *probe;
41 sr_spew("output/analog: initializing");
45 if (!(ctx = g_try_malloc0(sizeof(struct context))))
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)
67 if (value > 1000000000L)
68 g_string_append_printf(out, "%f G%s", value / 1000000000L, unitstr);
69 else if (value > 1000000)
70 g_string_append_printf(out, "%f M%s", value / 1000000, unitstr);
71 else if (value > 1000)
72 g_string_append_printf(out, "%f k%s", value / 1000, unitstr);
73 else if (value < 0.000000000001)
74 g_string_append_printf(out, "%f p%s", value * 1000000000000, unitstr);
75 else if (value < 0.000000001)
76 g_string_append_printf(out, "%f n%s", value * 1000000000, unitstr);
77 else if (value < 0.000001)
78 g_string_append_printf(out, "%f u%s", value * 1000000, unitstr);
79 else if (value < 0.001)
80 g_string_append_printf(out, "%f m%s", value * 1000, unitstr);
82 g_string_append_printf(out, "%f %s", value, unitstr);
86 static void fancyprint(int unit, int mqflags, float value, GString *out)
91 si_printf(value, out, "V");
94 si_printf(value, out, "A");
97 si_printf(value, out, "");
98 g_string_append_unichar(out, 0x2126);
101 si_printf(value, out, "F");
104 si_printf(value, out, "K");
106 case SR_UNIT_CELSIUS:
107 si_printf(value, out, "");
108 g_string_append_unichar(out, 0x00b0);
109 g_string_append_c(out, 'C');
111 case SR_UNIT_FAHRENHEIT:
112 si_printf(value, out, "");
113 g_string_append_unichar(out, 0x00b0);
114 g_string_append_c(out, 'F');
117 si_printf(value, out, "Hz");
119 case SR_UNIT_PERCENTAGE:
120 g_string_append_printf(out, "%f%%", value);
122 case SR_UNIT_BOOLEAN:
124 g_string_append_printf(out, "TRUE");
126 g_string_append_printf(out, "FALSE");
129 si_printf(value, out, "s");
131 case SR_UNIT_SIEMENS:
132 si_printf(value, out, "S");
135 if ((mqflags & (SR_MQFLAG_AC | SR_MQFLAG_DC)) == (SR_MQFLAG_AC | SR_MQFLAG_DC))
136 g_string_append_printf(out, " AC+DC");
137 else if (mqflags & SR_MQFLAG_AC)
138 g_string_append_printf(out, " AC");
139 else if (mqflags & SR_MQFLAG_DC)
140 g_string_append_printf(out, " DC");
141 g_string_append_c(out, '\n');
145 static GString *receive(struct sr_output *o, const struct sr_dev_inst *sdi,
146 struct sr_datafeed_packet *packet)
148 struct sr_datafeed_analog *analog;
157 g_string_set_size(ctx->out, 0);
158 switch (packet->type) {
161 case SR_DF_FRAME_BEGIN:
162 g_string_append_printf(ctx->out, "FRAME-BEGIN\n");
164 case SR_DF_FRAME_END:
165 g_string_append_printf(ctx->out, "FRAME-END\n");
168 analog = packet->payload;
169 fdata = (float *)analog->data;
170 for (i = 0; i < analog->num_samples; i++) {
171 for (j = 0; j < ctx->num_enabled_probes; j++) {
172 g_string_append_printf(ctx->out, "%s: ",
173 (char *)g_ptr_array_index(ctx->probelist, j));
174 fancyprint(analog->unit, analog->mqflags,
175 fdata[i + j], ctx->out);
184 static int cleanup(struct sr_output *o)
192 g_ptr_array_free(ctx->probelist, 1);
193 g_string_free(ctx->out, 1);
201 SR_PRIV struct sr_output_format output_analog = {
203 .description = "Analog data",
204 .df_type = SR_DF_ANALOG,