X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=src%2Fhardware%2Fdemo%2Fdemo.c;h=63afcd106a67e54bd8a396c7224a0f5c8cd9ff52;hb=f3f19d1131025b68d29a11273b627c83d748e7ea;hp=b5cb276c9747f4011ed42ef8917abe1cf3866aa5;hpb=0af636bed97c174bea46e61e961eaa1b0b162e0f;p=libsigrok.git diff --git a/src/hardware/demo/demo.c b/src/hardware/demo/demo.c index b5cb276c..63afcd10 100644 --- a/src/hardware/demo/demo.c +++ b/src/hardware/demo/demo.c @@ -4,6 +4,7 @@ * Copyright (C) 2010 Uwe Hermann * Copyright (C) 2011 Olivier Fauchon * Copyright (C) 2012 Alexandru Gagniuc + * Copyright (C) 2015 Bartosz Golaszewski * * 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 @@ -103,6 +104,8 @@ struct analog_gen { float pattern_data[ANALOG_BUFSIZE]; unsigned int num_samples; struct sr_datafeed_analog packet; + float avg_val; /* Average value */ + unsigned num_avgs; /* Number of samples averaged */ }; /* Private, per-device-instance driver context. */ @@ -126,6 +129,14 @@ struct dev_context { /* Analog */ int32_t num_analog_channels; GHashTable *ch_ag; + gboolean avg; /* True if averaging is enabled */ + uint64_t avg_samples; +}; + +static const uint32_t drvopts[] = { + SR_CONF_DEMO_DEV, + SR_CONF_LOGIC_ANALYZER, + SR_CONF_OSCILLOSCOPE, }; static const uint32_t scanopts[] = { @@ -134,16 +145,12 @@ static const uint32_t scanopts[] = { }; static const uint32_t devopts[] = { - SR_CONF_DEMO_DEV, - SR_CONF_LOGIC_ANALYZER, - SR_CONF_OSCILLOSCOPE, - SR_CONF_CONTINUOUS, + SR_CONF_CONTINUOUS | SR_CONF_SET, SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET, SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET, -}; - -static const uint32_t devopts_global[] = { SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, + SR_CONF_AVERAGING | SR_CONF_GET | SR_CONF_SET, + SR_CONF_AVG_SAMPLES | SR_CONF_GET | SR_CONF_SET, }; static const uint32_t devopts_cg_logic[] = { @@ -161,7 +168,7 @@ static const uint64_t samplerates[] = { SR_HZ(1), }; -static uint8_t pattern_sigrok[] = { +static const uint8_t pattern_sigrok[] = { 0x4c, 0x92, 0x92, 0x92, 0x64, 0x00, 0x00, 0x00, 0x82, 0xfe, 0xfe, 0x82, 0x00, 0x00, 0x00, 0x00, 0x7c, 0x82, 0x82, 0x92, 0x74, 0x00, 0x00, 0x00, @@ -173,12 +180,10 @@ static uint8_t pattern_sigrok[] = { }; SR_PRIV struct sr_dev_driver demo_driver_info; -static struct sr_dev_driver *di = &demo_driver_info; static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data); - -static int init(struct sr_context *sr_ctx) +static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx) { return std_init(sr_ctx, di, LOG_PREFIX); } @@ -202,19 +207,18 @@ static void generate_analog_pattern(struct analog_gen *ag, uint64_t sample_rate) if (i % 5 == 0) value = -value; if (i % 10 == 0) - last_end = i - 1; + last_end = i; ag->pattern_data[i] = value; } ag->num_samples = last_end; break; - case PATTERN_SINE: frequency = (double) sample_rate / ANALOG_SAMPLES_PER_PERIOD; /* Make sure the number of samples we put out is an integer * multiple of our period size */ /* FIXME we actually need only one period. A ringbuffer would be - * usefull here.*/ + * useful here. */ while (num_samples % ANALOG_SAMPLES_PER_PERIOD != 0) num_samples--; @@ -226,7 +230,6 @@ static void generate_analog_pattern(struct analog_gen *ag, uint64_t sample_rate) ag->num_samples = num_samples; break; - case PATTERN_TRIANGLE: frequency = (double) sample_rate / ANALOG_SAMPLES_PER_PERIOD; @@ -241,7 +244,6 @@ static void generate_analog_pattern(struct analog_gen *ag, uint64_t sample_rate) ag->num_samples = num_samples; break; - case PATTERN_SAWTOOTH: frequency = (double) sample_rate / ANALOG_SAMPLES_PER_PERIOD; @@ -259,7 +261,7 @@ static void generate_analog_pattern(struct analog_gen *ag, uint64_t sample_rate) } } -static GSList *scan(GSList *options) +static GSList *scan(struct sr_dev_driver *di, GSList *options) { struct drv_context *drvc; struct dev_context *devc; @@ -290,9 +292,9 @@ static GSList *scan(GSList *options) devices = NULL; - sdi = sr_dev_inst_new(); + sdi = g_malloc0(sizeof(struct sr_dev_inst)); sdi->status = SR_ST_ACTIVE; - sdi->model = "Demo device"; + sdi->model = g_strdup("Demo device"); sdi->driver = di; devc = g_malloc(sizeof(struct dev_context)); @@ -305,15 +307,15 @@ static GSList *scan(GSList *options) devc->logic_unitsize = (devc->num_logic_channels + 7) / 8; devc->logic_pattern = PATTERN_SIGROK; devc->num_analog_channels = num_analog_channels; + devc->avg = FALSE; + devc->avg_samples = 0; /* Logic channels, all in one channel group. */ cg = g_malloc0(sizeof(struct sr_channel_group)); cg->name = g_strdup("Logic"); for (i = 0; i < num_logic_channels; i++) { sprintf(channel_name, "D%d", i); - if (!(ch = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE, channel_name))) - return NULL; - sdi->channels = g_slist_append(sdi->channels, ch); + ch = sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, channel_name); cg->channels = g_slist_append(cg->channels, ch); } sdi->channel_groups = g_slist_append(NULL, cg); @@ -328,9 +330,8 @@ static GSList *scan(GSList *options) devc->ch_ag = g_hash_table_new(g_direct_hash, g_direct_equal); for (i = 0; i < num_analog_channels; i++) { snprintf(channel_name, 16, "A%d", i); - ch = sr_channel_new(i + num_logic_channels, SR_CHANNEL_ANALOG, + ch = sr_channel_new(sdi, i + num_logic_channels, SR_CHANNEL_ANALOG, TRUE, channel_name); - sdi->channels = g_slist_append(sdi->channels, ch); acg->channels = g_slist_append(acg->channels, ch); /* Every analog channel gets its own channel group as well. */ @@ -348,6 +349,8 @@ static GSList *scan(GSList *options) ag->packet.unit = SR_UNIT_VOLT; ag->packet.data = ag->pattern_data; ag->pattern = pattern; + ag->avg_val = 0.0f; + ag->num_avgs = 0; g_hash_table_insert(devc->ch_ag, ch, ag); if (++pattern == ARRAY_SIZE(analog_pattern_str)) @@ -361,7 +364,7 @@ static GSList *scan(GSList *options) return devices; } -static GSList *dev_list(void) +static GSList *dev_list(const struct sr_dev_driver *di) { return ((struct drv_context *)(di->priv))->instances; } @@ -396,7 +399,7 @@ static void clear_helper(void *priv) g_free(devc); } -static int cleanup(void) +static int cleanup(const struct sr_dev_driver *di) { return std_dev_clear(di, clear_helper); } @@ -423,6 +426,12 @@ static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *s case SR_CONF_LIMIT_MSEC: *data = g_variant_new_uint64(devc->limit_msec); break; + case SR_CONF_AVERAGING: + *data = g_variant_new_boolean(devc->avg); + break; + case SR_CONF_AVG_SAMPLES: + *data = g_variant_new_uint64(devc->avg_samples); + break; case SR_CONF_PATTERN_MODE: if (!cg) return SR_ERR_CHANNEL_GROUP; @@ -475,17 +484,22 @@ static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sd switch (key) { case SR_CONF_SAMPLERATE: devc->cur_samplerate = g_variant_get_uint64(data); - sr_dbg("Setting samplerate to %" PRIu64, devc->cur_samplerate); break; case SR_CONF_LIMIT_SAMPLES: devc->limit_msec = 0; devc->limit_samples = g_variant_get_uint64(data); - sr_dbg("Setting sample limit to %" PRIu64, devc->limit_samples); break; case SR_CONF_LIMIT_MSEC: devc->limit_msec = g_variant_get_uint64(data); devc->limit_samples = 0; - sr_dbg("Setting time limit to %" PRIu64"ms", devc->limit_msec); + break; + case SR_CONF_AVERAGING: + devc->avg = g_variant_get_boolean(data); + sr_dbg("%s averaging", devc->avg ? "Enabling" : "Disabling"); + break; + case SR_CONF_AVG_SAMPLES: + devc->avg_samples = g_variant_get_uint64(data); + sr_dbg("Setting averaging rate to %" PRIu64, devc->avg_samples); break; case SR_CONF_PATTERN_MODE: if (!cg) @@ -555,8 +569,6 @@ static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst * GVariant *gvar; GVariantBuilder gvb; - (void)sdi; - if (key == SR_CONF_SCAN_OPTIONS) { *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); @@ -565,7 +577,7 @@ static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst * if (key == SR_CONF_DEVICE_OPTIONS && !sdi) { *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, - devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); + drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t)); return SR_OK; } @@ -576,7 +588,7 @@ static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst * switch (key) { case SR_CONF_DEVICE_OPTIONS: *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, - devopts_global, ARRAY_SIZE(devopts_global), sizeof(uint32_t)); + devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); break; case SR_CONF_SAMPLERATE: g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); @@ -594,11 +606,11 @@ static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst * switch (key) { case SR_CONF_DEVICE_OPTIONS: if (ch->type == SR_CHANNEL_LOGIC) - *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, + *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, devopts_cg_logic, ARRAY_SIZE(devopts_cg_logic), sizeof(uint32_t)); else if (ch->type == SR_CHANNEL_ANALOG) - *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, + *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, devopts_cg_analog, ARRAY_SIZE(devopts_cg_analog), sizeof(uint32_t)); else @@ -663,6 +675,65 @@ static void logic_generator(struct sr_dev_inst *sdi, uint64_t size) } } +static void send_analog_packet(struct analog_gen *ag, + struct sr_dev_inst *sdi, + uint64_t *analog_sent, + uint64_t analog_todo) +{ + struct sr_datafeed_packet packet; + struct dev_context *devc; + uint64_t sending_now, to_avg; + int ag_pattern_pos; + unsigned int i; + + devc = sdi->priv; + packet.type = SR_DF_ANALOG; + packet.payload = &ag->packet; + + if (!devc->avg) { + ag_pattern_pos = devc->analog_counter % ag->num_samples; + sending_now = MIN(analog_todo, ag->num_samples-ag_pattern_pos); + ag->packet.data = ag->pattern_data + ag_pattern_pos; + ag->packet.num_samples = sending_now; + sr_session_send(sdi, &packet); + + /* Whichever channel group gets there first. */ + *analog_sent = MAX(*analog_sent, sending_now); + } else { + ag_pattern_pos = devc->analog_counter % ag->num_samples; + to_avg = MIN(analog_todo, ag->num_samples-ag_pattern_pos); + + for (i = 0; i < to_avg; i++) { + ag->avg_val = (ag->avg_val + + *(ag->pattern_data + + ag_pattern_pos + i)) / 2; + ag->num_avgs++; + /* Time to send averaged data? */ + if (devc->avg_samples > 0 && + ag->num_avgs >= devc->avg_samples) + goto do_send; + } + + if (devc->avg_samples == 0) { + /* We're averaging all the samples, so wait with + * sending until the very end. + */ + *analog_sent = ag->num_avgs; + return; + } + +do_send: + ag->packet.data = &ag->avg_val; + ag->packet.num_samples = 1; + + sr_session_send(sdi, &packet); + *analog_sent = ag->num_avgs; + + ag->num_avgs = 0; + ag->avg_val = 0.0f; + } +} + /* Callback handling data */ static int prepare_data(int fd, int revents, void *cb_data) { @@ -719,21 +790,8 @@ static int prepare_data(int fd, int revents, void *cb_data) g_hash_table_iter_init(&iter, devc->ch_ag); while (g_hash_table_iter_next(&iter, NULL, &value)) { - ag = value; - packet.type = SR_DF_ANALOG; - packet.payload = &ag->packet; - - /* FIXME we should make sure we output a whole - * period of data before we send out again the - * beginning of our buffer. A ring buffer would - * help here as well */ - - sending_now = MIN(analog_todo, ag->num_samples); - ag->packet.num_samples = sending_now; - sr_session_send(sdi, &packet); - - /* Whichever channel group gets there first. */ - analog_sent = MAX(analog_sent, sending_now); + send_analog_packet(value, sdi, + &analog_sent, analog_todo); } analog_todo -= analog_sent; devc->analog_counter += analog_sent; @@ -743,6 +801,19 @@ static int prepare_data(int fd, int revents, void *cb_data) if (!devc->continuous && (!devc->num_logic_channels || devc->logic_counter >= devc->limit_samples) && (!devc->num_analog_channels || devc->analog_counter >= devc->limit_samples)) { + /* If we're averaging everything - now is the time to send data */ + if (devc->avg_samples == 0) { + g_hash_table_iter_init(&iter, devc->ch_ag); + while (g_hash_table_iter_next(&iter, NULL, &value)) { + ag = value; + packet.type = SR_DF_ANALOG; + packet.payload = &ag->packet; + ag->packet.data = &ag->avg_val; + ag->packet.num_samples = 1; + sr_session_send(sdi, &packet); + } + } + sr_dbg("Requested number of samples reached."); dev_acquisition_stop(sdi, cb_data); return TRUE;