fish

1 files changed, 82 insertions, 0 deletions

diff --git a/app/dfu.c b/app/dfu.c
new file mode 100644
index 0000000..554aca9
--- /dev/null
+++ b/app/dfu.c
@@ -0,0 +1,82 @@
+#include "project.h"
+
+#ifdef INCLUDE_DFU_INTERFACE
+
+extern uint32_t dfu_flag;
+
+const struct usb_dfu_descriptor dfu_function = {
+  .bLength = sizeof (struct usb_dfu_descriptor),
+  .bDescriptorType = DFU_FUNCTIONAL,
+  .bmAttributes = USB_DFU_CAN_DOWNLOAD,
+  .wDetachTimeout = 255,
+  .wTransferSize = 1024,
+  .bcdDFUVersion = 0x011A,
+};
+
+const struct usb_interface_descriptor dfu_iface = {
+  .bLength = USB_DT_INTERFACE_SIZE,
+  .bDescriptorType = USB_DT_INTERFACE,
+  .bInterfaceNumber = 3,
+  .bAlternateSetting = 0,
+  .bNumEndpoints = 0,
+  .bInterfaceClass = 0xFE,
+  .bInterfaceSubClass = 1,
+  .bInterfaceProtocol = 1,
+  .iInterface = 0,
+
+  .extra = &dfu_function,
+  .extralen = sizeof (dfu_function),
+};
+
+
+static void
+dfu_detach_complete (usbd_device * usbd_dev, struct usb_setup_data *req)
+{
+  (void) req;
+  (void) usbd_dev;
+
+  dfu_flag = 0xfee1dead;
+
+  scb_reset_core ();
+}
+
+int
+dfu_control_request (usbd_device * usbd_dev, struct usb_setup_data *req,
+                     uint8_t ** buf, uint16_t * len,
+                     void (**complete) (usbd_device * usbd_dev,
+                                        struct usb_setup_data * req))
+{
+  (void) buf;
+  (void) len;
+  (void) usbd_dev;
+
+  if ((req->bmRequestType & 0x7F) != 0x21)
+    return 0;                   /* Only accept class request. */
+
+  switch (req->bRequest)
+    {
+    case DFU_GETSTATUS:
+      {
+        (*buf)[0] = DFU_STATUS_OK;
+        (*buf)[1] = 0;
+        (*buf)[2] = 0;
+        (*buf)[3] = 0;
+        (*buf)[4] = STATE_APP_IDLE;
+        (*buf)[5] = 0;          /* iString not used here */
+        *len = 6;
+        return 1;
+      }
+    case DFU_GETSTATE:
+      /* Return state with no state transision. */
+      *buf[0] = STATE_APP_IDLE;
+      *len = 1;
+      return 1;
+    case DFU_DETACH:
+      *complete = dfu_detach_complete;
+      return 1;
+    }
+
+  return 0;
+
+}
+#endif