* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+#include <math.h>
#include "protocol.h"
SR_PRIV unsigned int get_memory_size(int type)
return 0;
}
-SR_PRIV int clz(unsigned int x)
+static int clz(unsigned int x)
{
int n = 0;
if (x == 0)
SR_PRIV int set_limit_samples(struct dev_context *devc, uint64_t samples)
{
+ if (samples > devc->max_sample_depth)
+ samples = devc->max_sample_depth;
+
devc->limit_samples = samples;
if (samples <= 2 * 1024)
return SR_OK;
}
+SR_PRIV int set_voltage_threshold(struct dev_context *devc, double thresh)
+{
+ if (thresh > 6.0)
+ thresh = 6.0;
+ if (thresh < -6.0)
+ thresh = -6.0;
+
+ devc->cur_threshold = thresh;
+
+ analyzer_set_voltage_threshold((int) round(-9.1*thresh + 62.6));
+
+ sr_info("Setting voltage threshold to %fV.", devc->cur_threshold);
+
+ return SR_OK;
+}
+
SR_PRIV void set_triggerbar(struct dev_context *devc)
{
- unsigned int ramsize, n, triggerbar;
-
- ramsize = get_memory_size(devc->memory_size) / 4;
- if (devc->trigger) {
- n = ramsize;
- if (devc->max_sample_depth < n)
- n = devc->max_sample_depth;
- if (devc->limit_samples < n)
- n = devc->limit_samples;
- n = n * devc->capture_ratio / 100;
- if (n > ramsize - 8)
- triggerbar = ramsize - 8;
- else
- triggerbar = n;
- } else {
+ unsigned int trigger_depth, triggerbar, ramsize_trigger;
+
+ trigger_depth = get_memory_size(devc->memory_size) / 4;
+ if (devc->limit_samples < trigger_depth)
+ trigger_depth = devc->limit_samples;
+
+ if (devc->trigger)
+ triggerbar = trigger_depth * devc->capture_ratio / 100;
+ else
+ triggerbar = 0;
+
+ ramsize_trigger = trigger_depth - triggerbar;
+ /* Matches USB packet captures from official app/driver */
+ if (triggerbar > 2)
+ triggerbar -= 2;
+ else {
+ ramsize_trigger -= 1;
triggerbar = 0;
}
+
analyzer_set_triggerbar_address(triggerbar);
- analyzer_set_ramsize_trigger_address(ramsize - triggerbar);
+ analyzer_set_ramsize_trigger_address(ramsize_trigger);
sr_dbg("triggerbar_address = %d(0x%x)", triggerbar, triggerbar);
sr_dbg("ramsize_triggerbar_address = %d(0x%x)",
- ramsize - triggerbar, ramsize - triggerbar);
+ ramsize_trigger, ramsize_trigger);
}