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