blob: 97bb93cafd620e78887b16eeaead65f38cd6819c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
|
/* Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* STM32F0 Family specific USB functionality
*/
#include "registers.h"
#include "system.h"
#include "usb_api.h"
void usb_connect(void)
{
/* USB is in use */
disable_sleep(SLEEP_MASK_USB_DEVICE);
STM32_USB_BCDR |= (1 << 15) /* DPPU */;
}
void usb_disconnect(void)
{
/* disable pull-up on DP to disconnect */
STM32_USB_BCDR &= ~(1 << 15) /* DPPU */;
/* USB is off, so sleep whenever */
enable_sleep(SLEEP_MASK_USB_DEVICE);
}
|
