From: Bert Vermeulen Date: Mon, 28 Jul 2014 23:56:19 +0000 (+0200) Subject: demo: Attach analog generator to channel, not channel group. X-Git-Tag: libsigrok-0.4.0~1186 X-Git-Url: https://sigrok.org/gitaction?a=commitdiff_plain;h=49224c285351e1d868731f13b3ef3c7906518706;p=libsigrok.git demo: Attach analog generator to channel, not channel group. This also adds a new channel group "Analog", which has all analog channels in it. --- diff --git a/src/hardware/demo/demo.c b/src/hardware/demo/demo.c index 7925b5b4..7fc959f4 100644 --- a/src/hardware/demo/demo.c +++ b/src/hardware/demo/demo.c @@ -125,7 +125,7 @@ struct dev_context { unsigned char logic_data[LOGIC_BUFSIZE]; /* Analog */ int32_t num_analog_channels; - GSList *analog_channel_groups; + GHashTable *ch_ag; }; static const int32_t scanopts[] = { @@ -142,7 +142,11 @@ static const int devopts[] = { SR_CONF_LIMIT_MSEC, }; -static const int devopts_cg[] = { +static const int devopts_cg_logic[] = { + SR_CONF_PATTERN_MODE, +}; + +static const int devopts_cg_analog[] = { SR_CONF_PATTERN_MODE, SR_CONF_AMPLITUDE, }; @@ -175,19 +179,16 @@ static int init(struct sr_context *sr_ctx) return std_init(sr_ctx, di, LOG_PREFIX); } -static void generate_analog_pattern(const struct sr_channel_group *cg, uint64_t sample_rate) +static void generate_analog_pattern(struct analog_gen *ag, uint64_t sample_rate) { - struct analog_gen *ag; double t, frequency; float value; unsigned int num_samples, i; int last_end; - ag = cg->priv; - num_samples = ANALOG_BUFSIZE / sizeof(float); + sr_dbg("Generating %s pattern.", analog_pattern_str[ag->pattern]); - sr_dbg("Generating %s pattern for channel group %s", - analog_pattern_str[ag->pattern], cg->name); + num_samples = ANALOG_BUFSIZE / sizeof(float); switch (ag->pattern) { case PATTERN_SQUARE: @@ -260,7 +261,7 @@ static GSList *scan(GSList *options) struct dev_context *devc; struct sr_dev_inst *sdi; struct sr_channel *ch; - struct sr_channel_group *cg; + struct sr_channel_group *cg, *acg; struct sr_config *src; struct analog_gen *ag; GSList *devices, *l; @@ -291,10 +292,7 @@ static GSList *scan(GSList *options) } sdi->driver = di; - if (!(devc = g_try_malloc(sizeof(struct dev_context)))) { - sr_err("Device context malloc failed."); - return NULL; - } + devc = g_malloc(sizeof(struct dev_context)); devc->cur_samplerate = SR_KHZ(200); devc->limit_samples = 0; devc->limit_msec = 0; @@ -304,14 +302,10 @@ 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->analog_channel_groups = NULL; /* Logic channels, all in one channel group. */ - if (!(cg = g_try_malloc(sizeof(struct sr_channel_group)))) - return NULL; + cg = g_malloc0(sizeof(struct sr_channel_group)); cg->name = g_strdup("Logic"); - cg->channels = NULL; - cg->priv = NULL; 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))) @@ -322,24 +316,28 @@ static GSList *scan(GSList *options) sdi->channel_groups = g_slist_append(NULL, cg); /* Analog channels, channel groups and pattern generators. */ - pattern = 0; + /* An "Analog" channel group with all analog channels in it. */ + acg = g_malloc0(sizeof(struct sr_channel_group)); + acg->name = g_strdup("Analog"); + sdi->channel_groups = g_slist_append(sdi->channel_groups, acg); + + devc->ch_ag = g_hash_table_new(g_direct_hash, g_direct_equal); for (i = 0; i < num_analog_channels; i++) { - sprintf(channel_name, "A%d", i); - if (!(ch = sr_channel_new(i + num_logic_channels, - SR_CHANNEL_ANALOG, TRUE, channel_name))) - return NULL; + snprintf(channel_name, 16, "A%d", i); + ch = sr_channel_new(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. */ - if (!(cg = g_try_malloc(sizeof(struct sr_channel_group)))) - return NULL; + /* Every analog channel gets its own channel group as well. */ + cg = g_malloc0(sizeof(struct sr_channel_group)); cg->name = g_strdup(channel_name); cg->channels = g_slist_append(NULL, ch); + sdi->channel_groups = g_slist_append(sdi->channel_groups, cg); - /* Every channel group gets a generator struct. */ - if (!(ag = g_try_malloc(sizeof(struct analog_gen)))) - return NULL; + /* Every channel gets a generator struct. */ + ag = g_malloc(sizeof(struct analog_gen)); ag->amplitude = DEFAULT_ANALOG_AMPLITUDE; ag->packet.channels = cg->channels; ag->packet.mq = 0; @@ -347,10 +345,7 @@ static GSList *scan(GSList *options) ag->packet.unit = SR_UNIT_VOLT; ag->packet.data = ag->pattern_data; ag->pattern = pattern; - cg->priv = ag; - - sdi->channel_groups = g_slist_append(sdi->channel_groups, cg); - devc->analog_channel_groups = g_slist_append(devc->analog_channel_groups, cg); + g_hash_table_insert(devc->ch_ag, ch, ag); if (++pattern == ARRAY_SIZE(analog_pattern_str)) pattern = 0; @@ -385,16 +380,16 @@ static int dev_close(struct sr_dev_inst *sdi) static void clear_helper(void *priv) { struct dev_context *devc; - struct sr_channel_group *cg; - GSList *l; + GHashTableIter iter; + void *value; devc = priv; - for (l = devc->analog_channel_groups; l; l = l->next) { - cg = l->data; - /* Analog generators. */ - g_free(cg->priv); - } - g_slist_free(devc->analog_channel_groups); + + /* 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); } @@ -428,12 +423,13 @@ static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi, case SR_CONF_PATTERN_MODE: if (!cg) return SR_ERR_CHANNEL_GROUP; + /* Any channel in the group will do. */ ch = cg->channels->data; if (ch->type == SR_CHANNEL_LOGIC) { pattern = devc->logic_pattern; *data = g_variant_new_string(logic_pattern_str[pattern]); } else if (ch->type == SR_CHANNEL_ANALOG) { - ag = cg->priv; + ag = g_hash_table_lookup(devc->ch_ag, ch); pattern = ag->pattern; *data = g_variant_new_string(analog_pattern_str[pattern]); } else @@ -448,10 +444,11 @@ static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi, case SR_CONF_AMPLITUDE: if (!cg) return SR_ERR_CHANNEL_GROUP; + /* Any channel in the group will do. */ ch = cg->channels->data; if (ch->type != SR_CHANNEL_ANALOG) return SR_ERR_ARG; - ag = cg->priv; + ag = g_hash_table_lookup(devc->ch_ag, ch); *data = g_variant_new_double(ag->amplitude); break; default: @@ -467,7 +464,8 @@ static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi, struct dev_context *devc; struct analog_gen *ag; struct sr_channel *ch; - int pattern, ret; + GSList *l; + int logic_pattern, analog_pattern, ret; unsigned int i; const char *stropt; @@ -497,49 +495,55 @@ static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi, return SR_ERR_CHANNEL_GROUP; stropt = g_variant_get_string(data, NULL); ch = cg->channels->data; - pattern = -1; - if (ch->type == SR_CHANNEL_LOGIC) { - for (i = 0; i < ARRAY_SIZE(logic_pattern_str); i++) { - if (!strcmp(stropt, logic_pattern_str[i])) { - pattern = i; - break; - } + logic_pattern = analog_pattern = -1; + for (i = 0; i < ARRAY_SIZE(logic_pattern_str); i++) { + if (!strcmp(stropt, logic_pattern_str[i])) { + logic_pattern = i; + break; } - if (pattern == -1) - return SR_ERR_ARG; - devc->logic_pattern = pattern; - - /* Might as well do this now, these are static. */ - if (pattern == PATTERN_ALL_LOW) - memset(devc->logic_data, 0x00, LOGIC_BUFSIZE); - else if (pattern == PATTERN_ALL_HIGH) - memset(devc->logic_data, 0xff, LOGIC_BUFSIZE); - sr_dbg("Setting logic pattern to %s", - logic_pattern_str[pattern]); - } else if (ch->type == SR_CHANNEL_ANALOG) { - for (i = 0; i < ARRAY_SIZE(analog_pattern_str); i++) { - if (!strcmp(stropt, analog_pattern_str[i])) { - pattern = i; - break; - } + } + for (i = 0; i < ARRAY_SIZE(analog_pattern_str); i++) { + if (!strcmp(stropt, analog_pattern_str[i])) { + analog_pattern = i; + break; } - if (pattern == -1) - return SR_ERR_ARG; - sr_dbg("Setting analog pattern for channel group %s to %s", - cg->name, analog_pattern_str[pattern]); - ag = cg->priv; - ag->pattern = pattern; - } else - return SR_ERR_BUG; + } + if (logic_pattern == -1 && analog_pattern == -1) + return SR_ERR_ARG; + for (l = cg->channels; l; l = l->next) { + ch = l->data; + if (ch->type == SR_CHANNEL_LOGIC) { + if (logic_pattern == -1) + return SR_ERR_ARG; + sr_dbg("Setting logic pattern to %s", + logic_pattern_str[logic_pattern]); + devc->logic_pattern = logic_pattern; + /* Might as well do this now, these are static. */ + if (logic_pattern == PATTERN_ALL_LOW) + memset(devc->logic_data, 0x00, LOGIC_BUFSIZE); + else if (logic_pattern == PATTERN_ALL_HIGH) + memset(devc->logic_data, 0xff, LOGIC_BUFSIZE); + } else if (ch->type == SR_CHANNEL_ANALOG) { + if (analog_pattern == -1) + return SR_ERR_ARG; + sr_dbg("Setting analog pattern for channel %s to %s", + ch->name, analog_pattern_str[analog_pattern]); + ag = g_hash_table_lookup(devc->ch_ag, ch); + ag->pattern = analog_pattern; + } else + return SR_ERR_BUG; + } break; case SR_CONF_AMPLITUDE: if (!cg) return SR_ERR_CHANNEL_GROUP; - ch = cg->channels->data; - if (ch->type != SR_CHANNEL_ANALOG) - return SR_ERR_ARG; - ag = cg->priv; - ag->amplitude = g_variant_get_double(data); + for (l = cg->channels; l; l = l->next) { + ch = l->data; + if (ch->type != SR_CHANNEL_ANALOG) + return SR_ERR_ARG; + ag = g_hash_table_lookup(devc->ch_ag, ch); + ag->amplitude = g_variant_get_double(data); + } break; default: ret = SR_ERR_NA; @@ -583,11 +587,20 @@ static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi, return SR_ERR_NA; } } else { + /* Any channel in the group will do. */ ch = cg->channels->data; switch (key) { case SR_CONF_DEVICE_OPTIONS: - *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, - devopts_cg, ARRAY_SIZE(devopts_cg), sizeof(int32_t)); + if (ch->type == SR_CHANNEL_LOGIC) + *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, + devopts_cg_logic, ARRAY_SIZE(devopts_cg_logic), + sizeof(int32_t)); + else if (ch->type == SR_CHANNEL_ANALOG) + *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, + devopts_cg_analog, ARRAY_SIZE(devopts_cg_analog), + sizeof(int32_t)); + else + return SR_ERR_BUG; break; case SR_CONF_PATTERN_MODE: if (ch->type == SR_CHANNEL_LOGIC) @@ -655,9 +668,9 @@ static int prepare_data(int fd, int revents, void *cb_data) struct dev_context *devc; struct sr_datafeed_packet packet; struct sr_datafeed_logic logic; - struct sr_channel_group *cg; struct analog_gen *ag; - GSList *l; + GHashTableIter iter; + void *value; uint64_t logic_todo, analog_todo, expected_samplenum, analog_sent, sending_now; int64_t time, elapsed; @@ -701,9 +714,10 @@ static int prepare_data(int fd, int revents, void *cb_data) /* Analog, one channel at a time */ if (analog_todo > 0) { analog_sent = 0; - for (l = devc->analog_channel_groups; l; l = l->next) { - cg = l->data; - ag = cg->priv; + + 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; @@ -737,8 +751,9 @@ static int prepare_data(int fd, int revents, void *cb_data) static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) { - GSList *l; struct dev_context *devc; + GHashTableIter iter; + void *value; (void)cb_data; @@ -761,8 +776,9 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) return SR_ERR; } - for (l = devc->analog_channel_groups; l; l = l->next) - generate_analog_pattern(l->data, devc->cur_samplerate); + g_hash_table_iter_init(&iter, devc->ch_ag); + while (g_hash_table_iter_next(&iter, NULL, &value)) + generate_analog_pattern(value, devc->cur_samplerate); devc->channel = g_io_channel_unix_new(devc->pipe_fds[0]); g_io_channel_set_flags(devc->channel, G_IO_FLAG_NONBLOCK, NULL);