uni-t-ut32x: improve robustness of packet parser, more diagnostics

[libsigrok.git] / src / hardware / uni-t-ut32x / protocol.h

diff --git a/src/hardware/uni-t-ut32x/protocol.h b/src/hardware/uni-t-ut32x/protocol.h
index acc453ec170d34752c0017d761022817cc245c72..eb10a65b8b267a464d7f5d61329637d9fb782718 100644 (file)
--- a/src/hardware/uni-t-ut32x/protocol.h
+++ b/src/hardware/uni-t-ut32x/protocol.h
@@ -35,6 +35,8 @@
 #define EP_IN (0x80 | 2)
 #define EP_OUT 2
 
+#define PACKET_SIZE    19
+
 enum ut32x_data_source {
        DATA_SOURCE_LIVE,
        DATA_SOURCE_MEMORY,
@@ -53,7 +55,7 @@ struct dev_context {
        struct libusb_transfer *xfer;
 
        unsigned char packet[32];
-       int packet_len;
+       size_t packet_len;
 };
 
 SR_PRIV int uni_t_ut32x_handle_events(int fd, int revents, void *cb_data);