From 0d92c65829cc18ef40d221785c5a7c9f7fde0e8c Mon Sep 17 00:00:00 2001
From: hathach <thach@tinyusb.org>
Date: Tue, 4 Sep 2018 18:36:08 +0700
Subject: [PATCH] correct disconnection check to only dtr

---
 ports/nrf/usb/usb.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ports/nrf/usb/usb.c b/ports/nrf/usb/usb.c
index f8b5fd6632..248d31e213 100644
--- a/ports/nrf/usb/usb.c
+++ b/ports/nrf/usb/usb.c
@@ -130,8 +130,8 @@ uint32_t tusb_hal_millis(void) {
 void tud_cdc_line_state_cb(uint8_t itf, bool dtr, bool rts) {
     (void) itf; // interface ID, not used
 
-    // disconnected event
-    if ( !dtr && !rts )
+    // DTR = false is counted as disconnected
+    if ( !dtr )
     {
         cdc_line_coding_t coding;
         tud_cdc_get_line_coding(&coding);