USB: max number of endpoints can be equal to the number of interfaces

When only the endpoint 0 is used for a USB device, the number of
endpoints can be equal to the number of interfaces.

This also fixes the following bug in the nightly test build:
  bertos/drv/usb_endpoint.h:77: error: size of array 'STATIC_ASSERTION_FAILED__' is negative

git-svn-id: https://src.develer.com/svnoss/bertos/trunk@4689 38d2e660-2303-0410-9eaa-f027e97ec537

diff --git a/bertos/drv/usb_endpoint.h b/bertos/drv/usb_endpoint.h
index 1376f327f2d67c240635dc64a164e46d5e74b790..63c49bd5ff80033578add0498615d863fa2844aa 100644 (file)
--- a/bertos/drv/usb_endpoint.h
+++ b/bertos/drv/usb_endpoint.h
@@ -74,6 +74,6 @@ enum {
  * special endpoint 0. In conclusion, the number of endpoints must be always
  * greater than the number of interfaces.
  */
-STATIC_ASSERT(USB_EP_MAX > CONFIG_USB_INTERFACE_MAX);
+STATIC_ASSERT(USB_EP_MAX >= CONFIG_USB_INTERFACE_MAX);
 
 #endif /* USB_ENDPOINT_H */