rigol-ds: fix the smallest supported vdiv for the DS2000 series.

[libsigrok.git] / src / hardware / rigol-ds / api.c

diff --git a/src/hardware/rigol-ds/api.c b/src/hardware/rigol-ds/api.c
index 3ce237d7b857c0c1c4cf9f4e0dd914d2bb13188d..38aadf436de0ef89c13a83288364cab37f226f3e 100644 (file)
--- a/src/hardware/rigol-ds/api.c
+++ b/src/hardware/rigol-ds/api.c
@@ -192,7 +192,7 @@ static const struct rigol_ds_series supported_series[] = {
        [DS1000] = {VENDOR(RIGOL), "DS1000", PROTOCOL_V2, FORMAT_IEEE488_2,
                {50, 1}, {2, 1000}, 12, 600, 1048576},
        [DS2000] = {VENDOR(RIGOL), "DS2000", PROTOCOL_V3, FORMAT_IEEE488_2,
-               {500, 1}, {2, 1000}, 14, 1400, 14000},
+               {500, 1}, {500, 1000000}, 14, 1400, 14000},
        [DS2000A] = {VENDOR(RIGOL), "DS2000A", PROTOCOL_V3, FORMAT_IEEE488_2,
                {1000, 1}, {500, 1000000}, 14, 1400, 14000},
        [DSO1000] = {VENDOR(AGILENT), "DSO1000", PROTOCOL_V3, FORMAT_IEEE488_2,
@@ -381,8 +381,10 @@ static struct sr_dev_inst *probe_device(struct sr_scpi_dev_inst *scpi)
        }
 
        for (i = 0; i < NUM_VDIV; i++)
-               if (!memcmp(&devc->model->series->min_vdiv, &vdivs[i], sizeof(uint64_t[2])))
+               if (!memcmp(&devc->model->series->min_vdiv, &vdivs[i], sizeof(uint64_t[2]))) {
                        devc->vdivs = &vdivs[i];
+                       devc->num_vdivs = NUM_VDIV - i;
+               }
 
        if (!(devc->buffer = g_try_malloc(ACQ_BUFFER_SIZE)))
                return NULL;
@@ -502,7 +504,7 @@ static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *s
        const char *tmp_str;
        uint64_t samplerate;
        int analog_channel = -1;
-       float smallest_diff = 0.0000000001;
+       float smallest_diff = INFINITY;
        int idx = -1;
        unsigned i;
 
@@ -531,7 +533,8 @@ static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *s
                *data = g_variant_new_int32(devc->model->series->num_horizontal_divs);
                break;
        case SR_CONF_NUM_VDIV:
-               *data = g_variant_new_int32(NUM_VDIV);
+               *data = g_variant_new_int32(devc->num_vdivs);
+               break;
        case SR_CONF_DATA_SOURCE:
                if (devc->data_source == DATA_SOURCE_LIVE)
                        *data = g_variant_new_string("Live");
@@ -865,7 +868,7 @@ static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *
                        return SR_ERR_CHANNEL_GROUP;
                }
                g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
-               for (i = 0; i < NUM_VDIV; i++) {
+               for (i = 0; i < devc->num_vdivs; i++) {
                        rational[0] = g_variant_new_uint64(devc->vdivs[i][0]);
                        rational[1] = g_variant_new_uint64(devc->vdivs[i][1]);
                        tuple = g_variant_new_tuple(rational, 2);