X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=src%2Fhardware%2Frdtech-tc%2Fprotocol.h;h=e495375ca673dc7b46bef478fbec0c964e237be4;hb=HEAD;hp=fb0259067858a7a9600a07d254713306b3da88f5;hpb=e2bcf2e3b4190877c64ffdbb6a99d64a063cc402;p=libsigrok.git

diff --git a/src/hardware/rdtech-tc/protocol.h b/src/hardware/rdtech-tc/protocol.h
index fb025906..e495375c 100644
--- a/src/hardware/rdtech-tc/protocol.h
+++ b/src/hardware/rdtech-tc/protocol.h
@@ -25,7 +25,16 @@
 
 #define LOG_PREFIX "rdtech-tc"
 
-#define RDTECH_TC_BUFSIZE 256
+/*
+ * Keep request and response buffers of sufficient size. The maximum
+ * request text currently involved is "bgetva\r\n" which translates
+ * to 9 bytes. The poll response (a measurement, the largest amount
+ * of data that is currently received) is 192 bytes in length. Add
+ * some slack for alignment, and for in-flight messages or adjacent
+ * data during synchronization to the data stream.
+ */
+#define RDTECH_TC_MAXREQLEN 12
+#define RDTECH_TC_RSPBUFSIZE 256
 
 struct rdtech_dev_info {
 	char *model_name;
@@ -43,14 +52,17 @@ struct rdtech_tc_channel_desc {
 };
 
 struct dev_context {
+	gboolean is_bluetooth;
+	char req_text[RDTECH_TC_MAXREQLEN];
 	struct rdtech_dev_info dev_info;
 	const struct rdtech_tc_channel_desc *channels;
 	size_t channel_count;
 	struct feed_queue_analog **feeds;
 	struct sr_sw_limits limits;
-	uint8_t buf[RDTECH_TC_BUFSIZE];
+	uint8_t buf[RDTECH_TC_RSPBUFSIZE];
 	size_t rdlen;
 	int64_t cmd_sent_at;
+	size_t rx_after_tx;
 };
 
 SR_PRIV int rdtech_tc_probe(struct sr_serial_dev_inst *serial, struct dev_context *devc);