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.
2020-12-05 16:05:51 +01:00 · 2020-12-05 16:05:51 +01:00 · fe185e4990
parent 0f5dcee6ce
commit fe185e4990
1 changed files with 2 additions and 1 deletions
--- 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)