hantek-dso: enable SR_HWCAP_COUPLING

[libsigrok.git] / hardware / hantek-dso / api.c

diff --git a/hardware/hantek-dso/api.c b/hardware/hantek-dso/api.c
index 6c1042ffca439250f89a550d4df137786cb9a7eb..4ab64ef68640925596cc3a50eab89ab49be5b1e1 100644 (file)
--- a/hardware/hantek-dso/api.c
+++ b/hardware/hantek-dso/api.c
@@ -50,6 +50,7 @@ static int capabilities[] = {
        SR_HWCAP_HORIZ_TRIGGERPOS,
        SR_HWCAP_FILTER,
        SR_HWCAP_VDIV,
+       SR_HWCAP_COUPLING,
        0,
 };
 
@@ -125,6 +126,13 @@ static char *filter_targets[] = {
        NULL
 };
 
+static char *coupling[] = {
+       "AC",
+       "DC",
+       "GND",
+       NULL
+};
+
 SR_PRIV libusb_context *usb_context = NULL;
 SR_PRIV GSList *dev_insts = NULL;
 
@@ -384,6 +392,9 @@ static void *hw_get_device_info(int dev_index, int dev_info_id)
        case SR_DI_VDIVS:
                info = vdivs;
                break;
+       case SR_DI_COUPLING:
+               info = coupling;
+               break;
        /* TODO remove this */
        case SR_DI_CUR_SAMPLERATE:
                info = &tmp;
@@ -417,7 +428,7 @@ static int hw_dev_config_set(int dev_index, int hwcap, void *value)
        float tmp_float;
        uint64_t tmp_u64;
        int ret, i;
-       char *tmp_str, **targets;
+       char **targets;
 
        if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
                return SR_ERR;
@@ -472,10 +483,9 @@ static int hw_dev_config_set(int dev_index, int hwcap, void *value)
                        ret = SR_ERR_ARG;
                break;
        case SR_HWCAP_TRIGGER_SOURCE:
-               tmp_str = value;
                for (i = 0; trigger_sources[i]; i++) {
-                       if (!strcmp(tmp_str, trigger_sources[i])) {
-                               ctx->triggersource = g_strdup(tmp_str);
+                       if (!strcmp(value, trigger_sources[i])) {
+                               ctx->triggersource = g_strdup(value);
                                break;
                        }
                }
@@ -516,6 +526,18 @@ static int hw_dev_config_set(int dev_index, int hwcap, void *value)
                if (vdivs[i].p == 0 && vdivs[i].q == 0)
                        ret = SR_ERR_ARG;
                break;
+       case SR_HWCAP_COUPLING:
+               /* TODO not supporting coupling per channel yet */
+               for (i = 0; coupling[i]; i++) {
+                       if (!strcmp(value, coupling[i])) {
+                               ctx->coupling_ch1 = i;
+                               ctx->coupling_ch2 = i;
+                               break;
+                       }
+               }
+               if (coupling[i] == 0)
+                       ret = SR_ERR_ARG;
+               break;
        default:
                ret = SR_ERR_ARG;
        }