Don't check sr_channel_new() return value (always succeeds).

[libsigrok.git] / src / hardware / demo / demo.c

diff --git a/src/hardware/demo/demo.c b/src/hardware/demo/demo.c
index b5cb276c9747f4011ed42ef8917abe1cf3866aa5..26e49ca98b4c857419beb19aa41d8d08cf647425 100644 (file)
--- a/src/hardware/demo/demo.c
+++ b/src/hardware/demo/demo.c
@@ -128,21 +128,21 @@ struct dev_context {
        GHashTable *ch_ag;
 };
 
+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_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,
 };
 
@@ -202,7 +202,7 @@ 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;
@@ -290,9 +290,9 @@ 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));
@@ -311,8 +311,7 @@ static GSList *scan(GSList *options)
        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;
+               ch = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE, channel_name);
                sdi->channels = g_slist_append(sdi->channels, ch);
                cg->channels = g_slist_append(cg->channels, ch);
        }
@@ -565,7 +564,7 @@ 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 +575,7 @@ 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}"));
@@ -671,6 +670,7 @@ static int prepare_data(int fd, int revents, void *cb_data)
        struct sr_datafeed_packet packet;
        struct sr_datafeed_logic logic;
        struct analog_gen *ag;
+       int ag_pattern_pos;
        GHashTableIter iter;
        void *value;
        uint64_t logic_todo, analog_todo, expected_samplenum, analog_sent, sending_now;
@@ -722,13 +722,9 @@ static int prepare_data(int fd, int revents, void *cb_data)
                                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_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);