From 2651b1d8bd00c93984d8a34be4ee868151367945 Mon Sep 17 00:00:00 2001
From: sago35 <sago35@gmail.com>
Date: Wed, 25 May 2022 21:54:48 +0900
Subject: [PATCH] fix packetComplete()

---
 src/machine/usb/dhw_atsamd51.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/machine/usb/dhw_atsamd51.go b/src/machine/usb/dhw_atsamd51.go
index 95b408abc..f4139bbae 100644
--- a/src/machine/usb/dhw_atsamd51.go
+++ b/src/machine/usb/dhw_atsamd51.go
@@ -601,7 +601,7 @@ func (t *dhwTransfer) packetStart(data uintptr, size uint32) (next uint32) {
 }
 
 func (t *dhwTransfer) packetComplete(sent uint32) (data uintptr, size uint32) {
-	t.sent = sent
+	t.sent += sent
 	if size = t.size - t.sent; size > t.maxPacketSize {
 		size = t.maxPacketSize
 	}