101 lines
3.9 KiB
C
101 lines
3.9 KiB
C
/**************************************************************************/
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/*!
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@file hal_lpc175x_6x.c
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@author hathach (tinyusb.org)
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@section LICENSE
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Software License Agreement (BSD License)
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Copyright (c) 2013, hathach (tinyusb.org)
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. Neither the name of the copyright holders nor the
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names of its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
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EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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This file is part of the tinyusb stack.
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*/
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/**************************************************************************/
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#include "common/common.h"
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#include "hal.h"
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#if TUSB_CFG_MCU == MCU_LPC175X_6X
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#ifdef __CC_ARM
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#pragma diag_suppress 66 // Suppress Keil warnings #66-D: enumeration value is out of "int" range
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#endif
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//--------------------------------------------------------------------+
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// IMPLEMENTATION
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//--------------------------------------------------------------------+
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tusb_error_t hal_init(void)
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{
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enum {
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USBCLK_DEVCIE = 0x12, // AHB + Device
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USBCLK_HOST = 0x19, // AHB + Host + OTG (!)
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PCONP_PCUSB = BIT_(31)
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};
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LPC_SC->PCONP |= PCONP_PCUSB; // enable USB Peripherals
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//------------- user manual 11.13 usb device controller initialization -------------//
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PINSEL_ConfigPin( &(PINSEL_CFG_Type) { .Portnum = 0, .Pinnum = 29, .Funcnum = 1} ); // P0.29 as D+
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PINSEL_ConfigPin( &(PINSEL_CFG_Type) { .Portnum = 0, .Pinnum = 30, .Funcnum = 1} ); // P0.30 as D-
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#if MODE_HOST_SUPPORTED
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PINSEL_ConfigPin( &(PINSEL_CFG_Type) { .Portnum = 1, .Pinnum = 22, .Funcnum = 2} ); // P1.22 as USB_PWRD
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PINSEL_ConfigPin( &(PINSEL_CFG_Type) { .Portnum = 1, .Pinnum = 19, .Funcnum = 2} ); // P1.19 as USB_PPWR
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LPC_USB->USBClkCtrl = USBCLK_HOST;
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while ((LPC_USB->USBClkSt & USBCLK_HOST) != USBCLK_HOST);
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LPC_USB->OTGStCtrl = 0x3;
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#endif
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#if MODE_DEVICE_SUPPORTED
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LPC_PINCON->PINSEL4 = bit_set_range(LPC_PINCON->PINSEL4, 18, 19, BIN8(01)); // P2_9 as USB Connect
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// P1_30 as VBUS, ignore if it is already in VBUS mode
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if ( !(!BIT_TEST_(LPC_PINCON->PINSEL3, 28) && BIT_TEST_(LPC_PINCON->PINSEL3, 29)) )
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{
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// some board like lpcxpresso1769 does not connect VBUS signal to pin P1_30, this allow those board to overwrite
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// by always pulling P1_30 to high
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PINSEL_ConfigPin( &(PINSEL_CFG_Type) {
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.Portnum = 1, .Pinnum = 30,
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.Funcnum = 2, .Pinmode = PINSEL_PINMODE_PULLDOWN} );
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}
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LPC_USB->USBClkCtrl = USBCLK_DEVCIE;
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while ((LPC_USB->USBClkSt & USBCLK_DEVCIE) != USBCLK_DEVCIE);
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#endif
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return TUSB_ERROR_NONE;
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}
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void USB_IRQHandler(void)
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{
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tusb_isr(0);
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}
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#endif
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