From: Bert Vermeulen <redacted>
Date: Tue, 15 May 2012 20:41:00 +0000 (+0200)
Subject: hantek-dso: support for SR_HWCAP_FILTER
X-Git-Tag: dsupstream~943
X-Git-Url: https://sigrok.org/gitweb/?p=libsigrok.git;a=commitdiff_plain;h=ebb781a69f1128fab5a9eedd39a548cba8ceccbb

hantek-dso: support for SR_HWCAP_FILTER
---

diff --git a/hardware/hantek-dso/api.c b/hardware/hantek-dso/api.c
index ba55e868..898bccec 100644
--- a/hardware/hantek-dso/api.c
+++ b/hardware/hantek-dso/api.c
@@ -48,6 +48,7 @@ static int capabilities[] = {
 	SR_HWCAP_TRIGGER_SOURCE,
 	SR_HWCAP_TRIGGER_SLOPE,
 	SR_HWCAP_HORIZ_TRIGGERPOS,
+	SR_HWCAP_FILTER,
 	0,
 };
 
@@ -101,6 +102,13 @@ static char *trigger_sources[] = {
 	NULL
 };
 
+static char *filter_targets[] = {
+	"CH1",
+	"CH2",
+	/* TODO: "TRIGGER", */
+	NULL
+};
+
 SR_PRIV libusb_context *usb_context = NULL;
 SR_PRIV GSList *dev_insts = NULL;
 
@@ -354,6 +362,9 @@ static void *hw_get_device_info(int dev_index, int dev_info_id)
 	case SR_DI_TRIGGER_SOURCES:
 		info = trigger_sources;
 		break;
+	case SR_DI_FILTERS:
+		info = filter_targets;
+		break;
 	/* TODO remove this */
 	case SR_DI_CUR_SAMPLERATE:
 		info = &tmp;
@@ -387,7 +398,7 @@ 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;
+	char *tmp_str, **targets;
 
 	if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
 		return SR_ERR;
@@ -452,6 +463,26 @@ static int hw_dev_config_set(int dev_index, int hwcap, void *value)
 		if (trigger_sources[i] == 0)
 			ret = SR_ERR_ARG;
 		break;
+	case SR_HWCAP_FILTER:
+		ctx->filter_ch1 = ctx->filter_ch2 = ctx->filter_trigger = 0;
+		targets = g_strsplit(value, ",", 0);
+		for (i = 0; targets[i]; i++) {
+			if (targets[i] == '\0')
+				/* Empty filter string can be used to clear them all. */
+				;
+			else if (!strcmp(targets[i], "CH1"))
+				ctx->filter_ch1 = TRUE;
+			else if (!strcmp(targets[i], "CH2"))
+				ctx->filter_ch2 = TRUE;
+			else if (!strcmp(targets[i], "TRIGGER"))
+				ctx->filter_trigger = TRUE;
+			else {
+				sr_err("invalid filter target %s", targets[i]);
+				ret = SR_ERR_ARG;
+			}
+		}
+		g_strfreev(targets);
+		break;
 	default:
 		ret = SR_ERR_ARG;
 	}
diff --git a/hardware/hantek-dso/dso.c b/hardware/hantek-dso/dso.c
index aa5fe239..3f65eed9 100644
--- a/hardware/hantek-dso/dso.c
+++ b/hardware/hantek-dso/dso.c
@@ -338,17 +338,24 @@ SR_PRIV int dso_set_filters(struct context *ctx)
 	int ret, tmp;
 	uint8_t cmdstring[8];
 
-	sr_dbg("hantek-dso: sending CMD_SET_FILTERS");
+	sr_dbg("hantek-dso: preparing CMD_SET_FILTERS");
 
 	memset(cmdstring, 0, sizeof(cmdstring));
 	cmdstring[0] = CMD_SET_FILTERS;
 	cmdstring[1] = 0x0f;
-	if (ctx->filter_ch1)
+	if (ctx->filter_ch1) {
+		sr_dbg("hantek-dso: turning on CH1 filter");
 		cmdstring[2] |= 0x80;
-	if (ctx->filter_ch2)
+	}
+	if (ctx->filter_ch2) {
+		sr_dbg("hantek-dso: turning on CH2 filter");
 		cmdstring[2] |= 0x40;
-	if (ctx->filter_trigger)
+	}
+	if (ctx->filter_trigger) {
+		/* TODO: supported on the DSO-2090? */
+		sr_dbg("hantek-dso: turning on trigger filter");
 		cmdstring[2] |= 0x20;
+	}
 
 	if (send_begin(ctx) != SR_OK)
 		return SR_ERR;
@@ -360,6 +367,7 @@ SR_PRIV int dso_set_filters(struct context *ctx)
 		sr_err("Failed to set filters: %d", ret);
 		return SR_ERR;
 	}
+	sr_dbg("hantek-dso: sent CMD_SET_FILTERS");
 
 	return SR_OK;
 }