28 lines
603 B
C
28 lines
603 B
C
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/* Copyright 2014 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*
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* STM32F0 Family specific USB functionality
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*/
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#include "registers.h"
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#include "system.h"
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#include "usb_api.h"
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void usb_connect(void)
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{
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/* USB is in use */
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disable_sleep(SLEEP_MASK_USB_DEVICE);
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STM32_USB_BCDR |= BIT(15) /* DPPU */;
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}
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void usb_disconnect(void)
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{
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/* disable pull-up on DP to disconnect */
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STM32_USB_BCDR &= ~BIT(15) /* DPPU */;
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/* USB is off, so sleep whenever */
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enable_sleep(SLEEP_MASK_USB_DEVICE);
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}
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