X-Git-Url: http://sigrok.org/gitweb/?a=blobdiff_plain;f=src%2Fhardware%2Fdemo%2Fapi.c;h=e9c504a2aca826c5afb35b9f0022827297c23d2b;hb=463160cbca37367ef94dfead0c64531d82b83ab8;hp=645ef5f2317744a3f019cb033528c5a9306266fe;hpb=01f2adb07a66a4e8e8a6102c7f6bb905007d606a;p=libsigrok.git diff --git a/src/hardware/demo/api.c b/src/hardware/demo/api.c index 645ef5f2..e9c504a2 100644 --- a/src/hardware/demo/api.c +++ b/src/hardware/demo/api.c @@ -46,17 +46,17 @@ static const char *logic_pattern_str[] = { "squid", }; +static const uint32_t scanopts[] = { + SR_CONF_NUM_LOGIC_CHANNELS, + SR_CONF_NUM_ANALOG_CHANNELS, +}; + static const uint32_t drvopts[] = { SR_CONF_DEMO_DEV, SR_CONF_LOGIC_ANALYZER, SR_CONF_OSCILLOSCOPE, }; -static const uint32_t scanopts[] = { - SR_CONF_NUM_LOGIC_CHANNELS, - SR_CONF_NUM_ANALOG_CHANNELS, -}; - static const uint32_t devopts[] = { SR_CONF_CONTINUOUS, SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET, @@ -180,39 +180,21 @@ static GSList *scan(struct sr_dev_driver *di, GSList *options) return std_scan_complete(di, g_slist_append(NULL, sdi)); } -static int dev_open(struct sr_dev_inst *sdi) +static void clear_helper(struct dev_context *devc) { - sdi->status = SR_ST_ACTIVE; - - return SR_OK; -} - -static int dev_close(struct sr_dev_inst *sdi) -{ - sdi->status = SR_ST_INACTIVE; - - return SR_OK; -} - -static void clear_helper(void *priv) -{ - struct dev_context *devc; GHashTableIter iter; void *value; - devc = priv; - /* Analog generators. */ g_hash_table_iter_init(&iter, devc->ch_ag); while (g_hash_table_iter_next(&iter, NULL, &value)) g_free(value); g_hash_table_unref(devc->ch_ag); - g_free(devc); } static int dev_clear(const struct sr_dev_driver *di) { - return std_dev_clear(di, clear_helper); + return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper); } static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, @@ -282,16 +264,12 @@ static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sd struct analog_gen *ag; struct sr_channel *ch; GSList *l; - int logic_pattern, analog_pattern, ret; + int logic_pattern, analog_pattern; unsigned int i; const char *stropt; devc = sdi->priv; - if (sdi->status != SR_ST_ACTIVE) - return SR_ERR_DEV_CLOSED; - - ret = SR_OK; switch (key) { case SR_CONF_SAMPLERATE: devc->cur_samplerate = g_variant_get_uint64(data); @@ -367,46 +345,24 @@ static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sd } break; default: - ret = SR_ERR_NA; + return SR_ERR_NA; } - return ret; + return SR_OK; } static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) { struct sr_channel *ch; - GVariant *gvar; - GVariantBuilder gvb; - - if (key == SR_CONF_SCAN_OPTIONS) { - *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, - scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); - return SR_OK; - } - - if (key == SR_CONF_DEVICE_OPTIONS && !sdi) { - *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, - drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t)); - return SR_OK; - } - - if (!sdi) - return SR_ERR_ARG; if (!cg) { switch (key) { + case SR_CONF_SCAN_OPTIONS: case SR_CONF_DEVICE_OPTIONS: - *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, - devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); - break; + return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts); case SR_CONF_SAMPLERATE: - g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); - gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates, - ARRAY_SIZE(samplerates), sizeof(uint64_t)); - g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar); - *data = g_variant_builder_end(&gvb); + *data = std_gvar_samplerates_steps(samplerates, ARRAY_SIZE(samplerates)); break; default: return SR_ERR_NA; @@ -457,15 +413,59 @@ static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst * static int dev_acquisition_start(const struct sr_dev_inst *sdi) { struct dev_context *devc; + GSList *l; + struct sr_channel *ch; + int bitpos; + uint8_t mask; GHashTableIter iter; void *value; - if (sdi->status != SR_ST_ACTIVE) - return SR_ERR_DEV_CLOSED; - devc = sdi->priv; devc->sent_samples = 0; + /* + * Determine the numbers of logic and analog channels that are + * involved in the acquisition. Determine an offset and a mask to + * remove excess logic data content before datafeed submission. + */ + devc->enabled_logic_channels = 0; + devc->enabled_analog_channels = 0; + for (l = sdi->channels; l; l = l->next) { + ch = l->data; + if (!ch->enabled) + continue; + if (ch->type == SR_CHANNEL_ANALOG) { + devc->enabled_analog_channels++; + continue; + } + if (ch->type != SR_CHANNEL_LOGIC) + continue; + /* + * TODO: Need we create a channel map here, such that the + * session datafeed packets will have a dense representation + * of the enabled channels' data? For example store channels + * D3 and D5 in bit positions 0 and 1 respectively, when all + * other channels are disabled? The current implementation + * generates a sparse layout, might provide data for logic + * channels that are disabled while it might suppress data + * from enabled channels at the same time. + */ + devc->enabled_logic_channels++; + } + devc->first_partial_logic_index = devc->enabled_logic_channels / 8; + bitpos = devc->enabled_logic_channels % 8; + mask = (1 << bitpos) - 1; + devc->first_partial_logic_mask = mask; + sr_dbg("num logic %zu, partial off %zu, mask 0x%02x.", + devc->enabled_logic_channels, + devc->first_partial_logic_index, + devc->first_partial_logic_mask); + + /* + * Have the waveform for analog patterns pre-generated. It's + * supposed to be periodic, so the generator just needs to + * access the prepared sample data (DDS style). + */ g_hash_table_iter_init(&iter, devc->ch_ag); while (g_hash_table_iter_next(&iter, NULL, &value)) demo_generate_analog_pattern(value, devc->cur_samplerate); @@ -485,7 +485,6 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi) static int dev_acquisition_stop(struct sr_dev_inst *sdi) { - sr_dbg("Stopping acquisition."); sr_session_source_remove(sdi->session, -1); std_session_send_df_end(sdi); @@ -504,8 +503,8 @@ static struct sr_dev_driver demo_driver_info = { .config_get = config_get, .config_set = config_set, .config_list = config_list, - .dev_open = dev_open, - .dev_close = dev_close, + .dev_open = std_dummy_dev_open, + .dev_close = std_dummy_dev_close, .dev_acquisition_start = dev_acquisition_start, .dev_acquisition_stop = dev_acquisition_stop, .context = NULL,