From: Markus Siegert <redacted>
Date: Mon, 11 Apr 2016 19:54:10 +0000 (+0200)
Subject: hantek-6xxx: Use power of 2 usb packet sizes
X-Git-Tag: libsigrok-0.5.0~498
X-Git-Url: https://sigrok.org/gitaction?a=commitdiff_plain;h=050eb3b32d96a7c0a54dee9ae249514eff937d21;p=libsigrok.git

hantek-6xxx: Use power of 2 usb packet sizes

Using non power of 2 sizes causes the driver to not work on OS X.
Depending on the usb transfer mode the buffer sizes will map
perfectly to the underlying transport protocol.
---

diff --git a/src/hardware/hantek-6xxx/protocol.h b/src/hardware/hantek-6xxx/protocol.h
index 6e87079c..c798a184 100644
--- a/src/hardware/hantek-6xxx/protocol.h
+++ b/src/hardware/hantek-6xxx/protocol.h
@@ -57,9 +57,9 @@
 #define VDIV_MULTIPLIER		10
 
 /* Weird flushing needed for filtering glitch away. */
-#define FLUSH_PACKET_SIZE	2600
+#define FLUSH_PACKET_SIZE	1024
 
-#define MIN_PACKET_SIZE		600
+#define MIN_PACKET_SIZE		512
 #define MAX_PACKET_SIZE		(12 * 1024 * 1024)
 
 #define HANTEK_EP_IN		0x86