hantek-4032l: Fix default threshold value selection (FP workaround).

[libsigrok.git] / src / hardware / hantek-4032l / api.c

diff --git a/src/hardware/hantek-4032l/api.c b/src/hardware/hantek-4032l/api.c
index 729a85da6204910c1298ab2f2a16146de060cea5..6ee46dee0642972ce16bb954fdcd705d93234d38 100644 (file)
--- a/src/hardware/hantek-4032l/api.c
+++ b/src/hardware/hantek-4032l/api.c
@@ -261,8 +261,13 @@ static GSList *scan(struct sr_dev_driver *di, GSList *options)
                devc->external_clock = FALSE;
                devc->clock_edge = H4032L_CLOCK_EDGE_TYPE_RISE;
 
-               devc->cur_threshold[0] = 2.5;
-               devc->cur_threshold[1] = 2.5;
+               /* Create array of thresholds from min to max. */
+               GVariant *thresholds = std_gvar_min_max_step_thresholds(
+                       H4032L_THR_VOLTAGE_MIN, H4032L_THR_VOLTAGE_MAX,
+                       H4032L_THR_VOLTAGE_STEP);
+               /* Take default threshold value from array (FP workaround). */
+               g_variant_get_child(thresholds, H4032L_THR_VOLTAGE_DEFAULT,
+                       "(dd)", &devc->cur_threshold[0], &devc->cur_threshold[1]);
 
                sdi->priv = devc;
                devices = g_slist_append(devices, sdi);
@@ -468,7 +473,8 @@ static int config_list(uint32_t key, GVariant **data,
                *data = std_gvar_array_i32(ARRAY_AND_SIZE(trigger_matches));
                break;
        case SR_CONF_VOLTAGE_THRESHOLD:
-               *data = std_gvar_min_max_step_thresholds(-6.0, 6.0, 0.1);
+               *data = std_gvar_min_max_step_thresholds(H4032L_THR_VOLTAGE_MIN,
+                       H4032L_THR_VOLTAGE_MAX, H4032L_THR_VOLTAGE_STEP);
                break;
        case SR_CONF_LIMIT_SAMPLES:
                *data = std_gvar_tuple_u64(H4043L_NUM_SAMPLES_MIN, H4032L_NUM_SAMPLES_MAX);