usb.h: Move to libmaple/.

Apart from having an unstable API, usb.h is now a fairly good citizen
of libmaple, so move it to live with the rest of the libmaple headers.

Its device struct is still "struct usblib_dev".  Leave that there; the
asymmetry with the rest of the library is a good reminder that the API
isn't really on equal footing with the rest of the library.

Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>

1 files changed, 82 insertions, 0 deletions

diff --git a/libmaple/usb.h b/libmaple/usb.h
new file mode 100644
index 0000000..94579ea
--- /dev/null
+++ b/libmaple/usb.h
@@ -0,0 +1,82 @@
+/******************************************************************************
+ * The MIT License
+ *
+ * Copyright (c) 2010 LeafLabs LLC.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *****************************************************************************/
+
+/*
+ * NOTE: This API is _unstable_ and will change drastically over time.
+ */
+
+#ifndef _USB_H_
+#define _USB_H_
+
+#include "libmaple_types.h"
+#include "rcc.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef USB_ISR_MSK
+/* Handle CTRM, WKUPM, SUSPM, ERRM, SOFM, ESOFM, RESETM */
+#define USB_ISR_MSK 0xBF00
+#endif
+
+typedef enum usb_dev_state {
+    USB_UNCONNECTED,
+    USB_ATTACHED,
+    USB_POWERED,
+    USB_SUSPENDED,
+    USB_ADDRESSED,
+    USB_CONFIGURED
+} usb_dev_state;
+
+/* Encapsulates global state formerly handled by usb_lib/ */
+typedef struct usblib_dev {
+    uint32 irq_mask;
+    void (**ep_int_in)(void);
+    void (**ep_int_out)(void);
+    usb_dev_state state;
+    rcc_clk_id clk_id;
+} usblib_dev;
+
+extern usblib_dev *USBLIB;
+
+void usb_init_usblib(usblib_dev *dev,
+                     void (**ep_int_in)(void),
+                     void (**ep_int_out)(void));
+
+static inline uint8 usb_is_connected(usblib_dev *dev) {
+    return dev->state != USB_UNCONNECTED;
+}
+
+static inline uint8 usb_is_configured(usblib_dev *dev) {
+    return dev->state == USB_CONFIGURED;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif