59 lines
2.2 KiB
C
59 lines
2.2 KiB
C
/*
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* hal_lpc11uxx.c
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*
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* Created on: Dec 7, 2012
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* Author: hathach
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*/
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/*
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* Software License Agreement (BSD License)
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* Copyright (c) 2013, hathach (tinyusb.net)
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* This file is part of the tiny usb stack.
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*/
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#include "common/common.h"
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#if MCU == MCU_LPC11UXX
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tusb_error_t hal_init()
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{
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// TODO remove magic number
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/* Enable AHB clock to the USB block and USB RAM. */
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LPC_SYSCON->SYSAHBCLKCTRL |= ((0x1<<14) | (0x1<<27));
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/* Pull-down is needed, or internally, VBUS will be floating. This is to
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address the wrong status in VBUSDebouncing bit in CmdStatus register. */
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LPC_IOCON->PIO0_3 &= ~0x1F;
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LPC_IOCON->PIO0_3 |= (0x01<<0); /* Secondary function VBUS */
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LPC_IOCON->PIO0_6 &= ~0x07;
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LPC_IOCON->PIO0_6 |= (0x01<<0); /* Secondary function SoftConn */
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return TUSB_ERROR_NONE;
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}
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#endif
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