From: Alberto Scotta <redacted>
Date: Sat, 5 Dec 2020 15:05:51 +0000 (+0100)
Subject: hantek-dso: fix 100MS/s
X-Git-Url: https://sigrok.org/gitaction?a=commitdiff_plain;h=fe185e4990edba03faf6485dcd6a42aeb3b9a008;p=libsigrok.git

hantek-dso: fix 100MS/s

Do not downsample at 100MS/s.
The device actually sampled at (100.0/0x1000)MS/s when 100MS/s was set.
---

diff --git a/src/hardware/hantek-dso/protocol.c b/src/hardware/hantek-dso/protocol.c
index c74187ad..d2101f2a 100644
--- a/src/hardware/hantek-dso/protocol.c
+++ b/src/hardware/hantek-dso/protocol.c
@@ -326,7 +326,8 @@ static int dso2250_set_trigger_samplerate(const struct sr_dev_inst *sdi)
 	}
 
 	tmp = base / devc->samplerate;
-	if (tmp) {
+	/* Downsample only if really necessary */
+	if (tmp > 1) {
 		/* Downsampling on */
 		cmdstring[2] |= 2;
 		/* Downsampler = 1comp((Base / Samplerate) - 2)