From b2269b610e5f29d60d637e9b433275646ea3d53e Mon Sep 17 00:00:00 2001
From: mux
Date: Sat, 1 Feb 2014 13:26:04 +0200
Subject: Detect VCP line state.

* Detect VCP line state, based on SET_CONTROL_LINE_STATE request
---
 stm/usb.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'stm/usb.c')

diff --git a/stm/usb.c b/stm/usb.c
index 802a70c6d..8f408b7b1 100644
--- a/stm/usb.c
+++ b/stm/usb.c
@@ -20,6 +20,7 @@ extern CDC_IF_Prop_TypeDef VCP_fops;
 USB_OTG_CORE_HANDLE USB_OTG_Core;
 
 static int dev_is_enabled = 0;
+int dev_is_connected=0; /* used by usbd_cdc_vcp */
 static char rx_buf[64];
 static int rx_buf_in;
 static int rx_buf_out;
@@ -41,6 +42,10 @@ bool usb_vcp_is_enabled(void) {
     return dev_is_enabled;
 }
 
+bool usb_vcp_is_connected(void) {
+    return dev_is_connected;
+}
+
 void usb_vcp_receive(const char *buf, uint32_t len) {
     if (dev_is_enabled) {
         for (int i = 0; i < len; i++) {
-- 
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