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#include "project.h"
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 = 2,
.bAlternateSetting = 0,
.bNumEndpoints = 0,
.bInterfaceClass = 0xFE,
.bInterfaceSubClass = 1,
.bInterfaceProtocol = 1,
.iInterface = 8,
.extra = &dfu_function,
.extralen = sizeof (dfu_function),
};
static int
dfu_detach_complete (usbd_device * usbd_dev, struct usb_setup_data *req)
{
(void) req;
(void) usbd_dev;
dfu_flag = 0xfee1dead;
scb_reset_core ();
return 0;
}
int
dfu_control_request (usbd_device * usbd_dev, struct usb_setup_data *req,
uint8_t ** buf, uint16_t * len,
int (**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;
}
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