Add rudimentary docs for the usb module (#137)

* Add rudimentary docs for the usb module Co-Authored-By: Vadim Kaushan <admin@disasm.info>
stm32-rs · Nov 17, 2019 · 16cb8d7 · 16cb8d7
1 parent 7d323d4
commit 16cb8d7
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/usb.rs b/src/usb.rs
@@ -1,5 +1,9 @@
 //! USB peripheral
 
+//! Requires the `stm32-usbd` feature.
+//! See https://github.com/stm32-rs/stm32f1xx-hal/tree/master/examples
+//! for usage examples
+
 use crate::pac::{RCC, USB};
 use stm32_usbd::UsbPeripheral;