ols: add feature to support >256K memory

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

diff --git a/src/hardware/demo/api.c b/src/hardware/demo/api.c
index 32ca88dd106d55da14ac7f5e03b58ddb90214e0c..7d3e08872d07c21b38832845a138d5cf2bd3fe80 100644 (file)
--- a/src/hardware/demo/api.c
+++ b/src/hardware/demo/api.c
@@ -143,6 +143,8 @@ static GSList *scan(struct sr_dev_driver *di, GSList *options)
        devc->logic_pattern = DEFAULT_LOGIC_PATTERN;
        devc->num_analog_channels = num_analog_channels;
        devc->limit_frames = limit_frames;
+       devc->capture_ratio = 20;
+       devc->stl = NULL;
 
        if (num_logic_channels > 0) {
                /* Logic channels, all in one channel group. */
@@ -434,11 +436,33 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
        uint8_t mask;
        GHashTableIter iter;
        void *value;
+       struct sr_trigger *trigger;
 
        devc = sdi->priv;
        devc->sent_samples = 0;
        devc->sent_frame_samples = 0;
 
+       /* Setup triggers */
+       if ((trigger = sr_session_trigger_get(sdi->session))) {
+               int pre_trigger_samples = 0;
+               if (devc->limit_samples > 0)
+                       pre_trigger_samples = (devc->capture_ratio * devc->limit_samples) / 100;
+               devc->stl = soft_trigger_logic_new(sdi, trigger, pre_trigger_samples);
+               if (!devc->stl)
+                       return SR_ERR_MALLOC;
+
+               /* Disable all analog channels since using them when there are logic
+                * triggers set up would require having pre-trigger sample buffers
+                * for analog sample data.
+                */
+               for (l = sdi->channels; l; l = l->next) {
+                       ch = l->data;
+                       if (ch->type == SR_CHANNEL_ANALOG)
+                               ch->enabled = FALSE;
+               }
+       }
+       devc->trigger_fired = FALSE;
+
        /*
         * Determine the numbers of logic and analog channels that are
         * involved in the acquisition. Determine an offset and a mask to
@@ -514,6 +538,11 @@ static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 
        std_session_send_df_end(sdi);
 
+       if (devc->stl) {
+               soft_trigger_logic_free(devc->stl);
+               devc->stl = NULL;
+       }
+
        return SR_OK;
 }