From 22542a81b669a13534c6617c1de13595ed31dca0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jan=20K=C3=A4berich?= <j.kaeberich@gmx.de>
Date: Mon, 31 Oct 2022 22:14:59 +0100
Subject: [PATCH] attempt to restart USB communication

---
 Software/VNA_embedded/Application/Drivers/USB/usb.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Software/VNA_embedded/Application/Drivers/USB/usb.c b/Software/VNA_embedded/Application/Drivers/USB/usb.c
index 1c8166b..7cf63f2 100644
--- a/Software/VNA_embedded/Application/Drivers/USB/usb.c
+++ b/Software/VNA_embedded/Application/Drivers/USB/usb.c
@@ -235,7 +235,9 @@ void usb_init(usbd_recv_callback_t receive_callback) {
 }
 bool usb_transmit(const uint8_t *data, uint16_t length) {
 	if(!connection_okay()) {
-		return false;
+		// clear buffer and attempt to restart the transfer
+		data_transmission_active = false;
+		usb_transmit_fifo_level = 0;
 	}
 	// attempt to add data to fifo
 	if(length > usb_available_buffer()) {