From 56ac38590602430f4217fb7bdf70b13017b4bc13 Mon Sep 17 00:00:00 2001
From: Bernhard Tittelbach <bernhard@tittelbach.org>
Date: Wed, 26 Apr 2017 15:45:54 +0200
Subject: usbio check if connected

---
 lib/usbio.c | 8 ++++++++
 lib/usbio.h | 1 +
 2 files changed, 9 insertions(+)

diff --git a/lib/usbio.c b/lib/usbio.c
index 3010789..2c9fc9c 100644
--- a/lib/usbio.c
+++ b/lib/usbio.c
@@ -99,6 +99,14 @@ void usbio_task(void)
   USB_USBTask();
 }
 
+int8_t usbio_is_connected(void)
+{
+  if(stdin == &usb_stream)
+    return 1;
+  else
+    return 0;
+}
+
 int16_t usbio_bytes_received(void)
 {
   if(stdin == &usb_stream)
diff --git a/lib/usbio.h b/lib/usbio.h
index fdd93f1..decc249 100644
--- a/lib/usbio.h
+++ b/lib/usbio.h
@@ -33,6 +33,7 @@ extern "C" {
 void usbio_init(void);
 void usbio_task(void);
 int16_t usbio_bytes_received(void);
+int8_t usbio_is_connected(void);
 
 #ifdef __cplusplus
 }
-- 
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