From f14cc8dba5468c3d0b9c8148f5064abb3a43a11d Mon Sep 17 00:00:00 2001
From: Pol Henarejos <pol.henarejos@cttc.es>
Date: Mon, 5 Sep 2022 16:47:07 +0200
Subject: [PATCH] Clearing tx buffer for every transmission.

Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
---
 src/usb/hid/hid.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/usb/hid/hid.c b/src/usb/hid/hid.c
index ce93ed3..9249d41 100644
--- a/src/usb/hid/hid.c
+++ b/src/usb/hid/hid.c
@@ -212,6 +212,7 @@ void driver_exec_timeout() {
 uint8_t *driver_prepare_response() {
     u2f_resp = (U2FHID_FRAME *)usb_get_tx();
     apdu.rdata = u2f_resp->init.data;
+    memset(usb_get_tx(), 0, 4096);
     return u2f_resp->init.data;
 }