rigol-ds: fix search for the closest vdiv.

[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 d748e6d490c0c8007a2d48d56630169cc4ef0a8f..c25f9ef51ca0d39d5def1ff89939c2892ab5f45c 100644 (file)
--- a/src/hardware/rigol-ds/api.c
+++ b/src/hardware/rigol-ds/api.c
@@ -113,6 +113,9 @@ static const uint64_t vdivs[][2] = {
        { 2, 1 },
        { 5, 1 },
        { 10, 1 },
+       { 20, 1 },
+       { 50, 1 },
+       { 100, 1 },
 };
 
 #define NUM_TIMEBASE  ARRAY_SIZE(timebases)
@@ -499,7 +502,7 @@ 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;
 
@@ -529,6 +532,7 @@ static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *s
                break;
        case SR_CONF_NUM_VDIV:
                *data = g_variant_new_int32(NUM_VDIV);
+               break;
        case SR_CONF_DATA_SOURCE:
                if (devc->data_source == DATA_SOURCE_LIVE)
                        *data = g_variant_new_string("Live");