Takuya Urakawa / F401RE-USBHost

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Dependencies:   FATFileSystem

Dependents:   F401RE-USBHostMIDI_RecieveExample

Fork of F401RE-USBHost by Norimasa Okamoto

Diff: USBHost/USBHALHost.cpp

Revision:
9:7f9f64cf5ded
Parent:
8:6463cd1964c0
Child:
10:40c7f6788902
--- a/USBHost/USBHALHost.cpp	Fri Jan 31 13:45:07 2014 +0000
+++ b/USBHost/USBHALHost.cpp	Mon Feb 03 13:00:16 2014 +0000
@@ -23,6 +23,8 @@
 #define USB_TEST_ASSERT_FALSE(A) while(0)
 #endif
 
+#define USB_INFO(...) do{fprintf(stderr,__VA_ARGS__);fprintf(stderr,"\n");}while(0);
+
 #define BD_OWN_MASK        (1<<7)
 #define BD_DATA01_MASK     (1<<6)
 #define BD_KEEP_MASK       (1<<5)
@@ -138,7 +140,15 @@
 bool USBHALHost::wait_attach() {
     attach_done = false;
     USB0->INTEN = USB_INTEN_ATTACHEN_MASK;
-    while(!attach_done);
+    Timer t;
+    t.reset();
+    t.start();
+    while(!attach_done) {
+        if (t.read_ms() > 5*1000) {
+            t.reset();
+            USB_INFO("Please attach USB device.");
+        }
+    }
     wait_ms(100);
     USB_TEST_ASSERT_FALSE(USB0->CTL & USB_CTL_SE0_MASK);
     root_lowSpeed = (USB0->CTL & USB_CTL_JSTATE_MASK) ? false : true;