/* * This file is part of the libsigrok project. * * Copyright (C) 2012 Bert Vermeulen * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ #include #include #include #include #include "libsigrok.h" #include "libsigrok-internal.h" /* Message logging helpers with driver-specific prefix string. */ #define DRIVER_LOG_DOMAIN "output/analog: " #define sr_log(l, s, args...) sr_log(l, DRIVER_LOG_DOMAIN s, ## args) #define sr_spew(s, args...) sr_spew(DRIVER_LOG_DOMAIN s, ## args) #define sr_dbg(s, args...) sr_dbg(DRIVER_LOG_DOMAIN s, ## args) #define sr_info(s, args...) sr_info(DRIVER_LOG_DOMAIN s, ## args) #define sr_warn(s, args...) sr_warn(DRIVER_LOG_DOMAIN s, ## args) #define sr_err(s, args...) sr_err(DRIVER_LOG_DOMAIN s, ## args) struct context { int num_enabled_probes; GPtrArray *probelist; }; static int init(struct sr_output *o) { struct context *ctx; struct sr_probe *probe; GSList *l; sr_spew("Initializing output module."); if (!o || !o->sdi) return SR_ERR_ARG; if (!(ctx = g_try_malloc0(sizeof(struct context)))) { sr_err("Output module context malloc failed."); return SR_ERR_MALLOC; } o->internal = ctx; /* Get the number of probes and their names. */ ctx->probelist = g_ptr_array_new(); for (l = o->sdi->probes; l; l = l->next) { probe = l->data; if (!probe || !probe->enabled) continue; g_ptr_array_add(ctx->probelist, probe->name); ctx->num_enabled_probes++; } return SR_OK; } static void si_printf(float value, GString *out, char *unitstr) { float v; if (signbit(value)) v = -(value); else v = value; if (v < 1e-12 || v > 1e+12) g_string_append_printf(out, "%f %s", value, unitstr); else if (v > 1e+9) g_string_append_printf(out, "%f G%s", value / 1e+9, unitstr); else if (v > 1e+6) g_string_append_printf(out, "%f M%s", value / 1e+6, unitstr); else if (v > 1e+3) g_string_append_printf(out, "%f k%s", value / 1e+3, unitstr); else if (v < 1e-9) g_string_append_printf(out, "%f n%s", value * 1e+9, unitstr); else if (v < 1e-6) g_string_append_printf(out, "%f u%s", value * 1e+6, unitstr); else if (v < 1e-3) g_string_append_printf(out, "%f m%s", value * 1e+3, unitstr); else g_string_append_printf(out, "%f %s", value, unitstr); } static void fancyprint(int unit, int mqflags, float value, GString *out) { switch (unit) { case SR_UNIT_VOLT: si_printf(value, out, "V"); break; case SR_UNIT_AMPERE: si_printf(value, out, "A"); break; case SR_UNIT_OHM: si_printf(value, out, ""); g_string_append_unichar(out, 0x2126); break; case SR_UNIT_FARAD: si_printf(value, out, "F"); break; case SR_UNIT_KELVIN: si_printf(value, out, "K"); break; case SR_UNIT_CELSIUS: si_printf(value, out, ""); g_string_append_unichar(out, 0x00b0); g_string_append_c(out, 'C'); break; case SR_UNIT_FAHRENHEIT: si_printf(value, out, ""); g_string_append_unichar(out, 0x00b0); g_string_append_c(out, 'F'); break; case SR_UNIT_HERTZ: si_printf(value, out, "Hz"); break; case SR_UNIT_PERCENTAGE: g_string_append_printf(out, "%f%%", value); break; case SR_UNIT_BOOLEAN: if (value > 0) g_string_append_printf(out, "TRUE"); else g_string_append_printf(out, "FALSE"); break; case SR_UNIT_SECOND: si_printf(value, out, "s"); break; case SR_UNIT_SIEMENS: si_printf(value, out, "S"); break; case SR_UNIT_DECIBEL_MW: si_printf(value, out, "dBu"); break; case SR_UNIT_DECIBEL_VOLT: si_printf(value, out, "dBV"); break; case SR_UNIT_DECIBEL_SPL: if (mqflags & SR_MQFLAG_SPL_FREQ_WEIGHT_A) si_printf(value, out, "dB(A)"); else if (mqflags & SR_MQFLAG_SPL_FREQ_WEIGHT_C) si_printf(value, out, "dB(C)"); else if (mqflags & SR_MQFLAG_SPL_FREQ_WEIGHT_Z) si_printf(value, out, "dB(Z)"); else /* No frequency weighting, or non-standard "flat" */ si_printf(value, out, "dB(SPL)"); if (mqflags & SR_MQFLAG_SPL_TIME_WEIGHT_S) g_string_append(out, " S"); else if (mqflags & SR_MQFLAG_SPL_TIME_WEIGHT_F) g_string_append(out, " F"); if (mqflags & SR_MQFLAG_SPL_LAT) g_string_append(out, " LAT"); else if (mqflags & SR_MQFLAG_SPL_PCT_OVER_ALARM) /* Not a standard function for SLMs, so this is * a made-up notation. */ g_string_append(out, " %oA"); break; case SR_UNIT_CONCENTRATION: g_string_append_printf(out, "%f ppm", value * 1000000); break; default: si_printf(value, out, ""); } if ((mqflags & (SR_MQFLAG_AC | SR_MQFLAG_DC)) == (SR_MQFLAG_AC | SR_MQFLAG_DC)) g_string_append_printf(out, " AC+DC"); else if (mqflags & SR_MQFLAG_AC) g_string_append_printf(out, " AC"); else if (mqflags & SR_MQFLAG_DC) g_string_append_printf(out, " DC"); g_string_append_c(out, '\n'); } static int receive(struct sr_output *o, const struct sr_dev_inst *sdi, const struct sr_datafeed_packet *packet, GString **out) { const struct sr_datafeed_analog *analog; struct sr_probe *probe; GSList *l; const float *fdata; int i, p; (void)sdi; *out = NULL; if (!o || !o->sdi) return SR_ERR_ARG; switch (packet->type) { case SR_DF_FRAME_BEGIN: *out = g_string_new("FRAME-BEGIN\n"); break; case SR_DF_FRAME_END: *out = g_string_new("FRAME-END\n"); break; case SR_DF_ANALOG: analog = packet->payload; fdata = (const float *)analog->data; *out = g_string_sized_new(512); for (i = 0; i < analog->num_samples; i++) { for (l = analog->probes, p = 0; l; l = l->next, p++) { probe = l->data; g_string_append_printf(*out, "%s: ", probe->name); fancyprint(analog->unit, analog->mqflags, fdata[i + p], *out); } } break; } return SR_OK; } static int cleanup(struct sr_output *o) { struct context *ctx; if (!o || !o->sdi) return SR_ERR_ARG; ctx = o->internal; g_ptr_array_free(ctx->probelist, 1); g_free(ctx); o->internal = NULL; return SR_OK; } SR_PRIV struct sr_output_format output_analog = { .id = "analog", .description = "Analog data", .df_type = SR_DF_ANALOG, .init = init, .receive = receive, .cleanup = cleanup };