From: Bert Vermeulen <redacted>
Date: Tue, 5 Jun 2012 15:37:28 +0000 (+0200)
Subject: sr: add unit field to sr_df_analog packet
X-Git-Tag: dsupstream~922
X-Git-Url: https://sigrok.org/gitweb/?p=libsigrok.git;a=commitdiff_plain;h=aff5a729abfaa016555f5d4a6a1e2c953405179d

sr: add unit field to sr_df_analog packet
---

diff --git a/hardware/hantek-dso/api.c b/hardware/hantek-dso/api.c
index 23d26842..5f2301ff 100644
--- a/hardware/hantek-dso/api.c
+++ b/hardware/hantek-dso/api.c
@@ -574,6 +574,7 @@ static void receive_transfer(struct libusb_transfer *transfer)
 	packet.payload = &analog;
 	/* TODO: support for 5xxx series 9-bit samples */
 	analog.num_samples = transfer->actual_length / 2;
+	analog.unit = SR_UNIT_VOLTAGE;
 	analog.data = g_try_malloc(analog.num_samples * sizeof(float) * num_probes);
 	data_offset = 0;
 	for (i = 0; i < analog.num_samples; i++) {
diff --git a/sigrok.h.in b/sigrok.h.in
index 5fc1e187..304f1d8f 100644
--- a/sigrok.h.in
+++ b/sigrok.h.in
@@ -167,6 +167,12 @@ enum {
 	SR_DF_FRAME_END,
 };
 
+/* sr_datafeed_analog.unit values */
+enum {
+	SR_UNIT_VOLTAGE,
+	SR_UNIT_CURRENT,
+};
+
 struct sr_datafeed_packet {
 	uint16_t type;
 	void *payload;
@@ -194,6 +200,7 @@ struct sr_datafeed_meta_analog {
 
 struct sr_datafeed_analog {
 	int num_samples;
+	int unit;
 	float *data;
 };