X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=src%2Fhardware%2Fkingst-la2016%2Fprotocol.h;h=09e12be6577d8739b860745a152f7f67648b0a4c;hb=1cadb5ecc134e3426c453b31e6c11c43b57f9616;hp=58998b24290bd0b9f7251f48e376aa86384822bf;hpb=8b172e78f6b9643cd62384df87459acb71f60d62;p=libsigrok.git

diff --git a/src/hardware/kingst-la2016/protocol.h b/src/hardware/kingst-la2016/protocol.h
index 58998b24..09e12be6 100644
--- a/src/hardware/kingst-la2016/protocol.h
+++ b/src/hardware/kingst-la2016/protocol.h
@@ -37,6 +37,16 @@
 
 #define LA2016_BULK_MAX         8388608
 
+/*
+ * On Windows sigrok uses WinUSB RAW_IO policy which requires the
+ * USB transfer buffer size to be a multiple of the endpoint max packet
+ * size, which is 512 bytes in this case. Also, the maximum allowed size of
+ * the transfer buffer is normally read from WinUSB_GetPipePolicy API but
+ * libusb does not expose this function. Typically, max size is 2MB.
+ */
+#define LA2016_EP6_PKTSZ	512 /* endpoint 6 max packet size */
+#define LA2016_USB_BUFSZ	(256 * 2 * LA2016_EP6_PKTSZ) /* 256KB buffer */
+
 #define MAX_RENUM_DELAY_MS	3000
 #define DEFAULT_TIMEOUT_MS      200