From: Aurelien Jacobs <redacted>
Date: Fri, 19 Aug 2016 22:56:23 +0000 (+0200)
Subject: rigol-ds: properly set encoding digits
X-Git-Tag: libsigrok-0.5.0~260
X-Git-Url: https://sigrok.org/gitaction?a=commitdiff_plain;h=b8f07f42216dd9b07d433d12cb660a617a0c3757;p=libsigrok.git

rigol-ds: properly set encoding digits
---

diff --git a/src/hardware/rigol-ds/protocol.c b/src/hardware/rigol-ds/protocol.c
index 98570ff0..df72307d 100644
--- a/src/hardware/rigol-ds/protocol.c
+++ b/src/hardware/rigol-ds/protocol.c
@@ -672,7 +672,9 @@ SR_PRIV int rigol_ds_receive(int fd, int revents, void *cb_data)
 		else
 			for (i = 0; i < len; i++)
 				devc->data[i] = (128 - devc->buffer[i]) * vdiv - offset;
-		sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
+		float vdivlog = log10f(vdiv);
+		int digits = -(int)vdivlog + (vdivlog < 0.0);
+		sr_analog_init(&analog, &encoding, &meaning, &spec, digits);
 		analog.meaning->channels = g_slist_append(NULL, ch);
 		analog.num_samples = len;
 		analog.data = devc->data;