/****************************************************************************
* arch/arm/src/lpc43xx/lpc43_uart.h
*
* Copyright (C) 2012 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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 NuttX 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 AND CONTRIBUTORS
* "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 OWNER OR CONTRIBUTORS 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.
*
****************************************************************************/
#ifndef __ARCH_ARM_SRC_LPC43XX_LPC43_LOWSETUP_H
#define __ARCH_ARM_SRC_LPC43XX_LPC43_LOWSETUP_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include "chip.h"
#include "chip/lpc43_uart.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Public Types
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
#ifndef __ASSEMBLY__
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: lpc43_lowsetup
*
* Description:
* Called at the very beginning of _start. Performs low level
* initialization of the serial console.
*
****************************************************************************/
EXTERN void lpc43_lowsetup(void);
/****************************************************************************
* Name: lpc43_usart0_reset, lpc43_uart1_reset, lpc43_usart2_reset, and
* lpc43_usart3_reset
*
* Description:
* Reset a U[S]ART. These functions are used by the serial driver when a
* U[S]ART is closed.
*
****************************************************************************/
#ifdef CONFIG_LPC43_USART0
EXTERN void lpc43_usart0_reset(void);
#endif
#ifdef CONFIG_LPC43_UART1
EXTERN void lpc43_uart1_reset(void);
#endif
#ifdef CONFIG_LPC43_USART2
EXTERN void lpc43_usart2_reset(void);
#endif
#ifdef CONFIG_LPC43_USART3
EXTERN void lpc43_usart3_reset(void);
#endif
/****************************************************************************
* Name: lpc43_usart0_setup, lpc43_uart1_setup, lpc43_usart2_setup, and
* lpc43_usart3_setup
*
* Description:
* Configure the U[S]ART. This involves:
*
* 1. Connecting the input clock to the U[S]ART as specified in the
* board.h file,
* 2. Configuring the U[S]ART pins
*
****************************************************************************/
#ifdef CONFIG_LPC43_USART0
EXTERN void lpc43_usart0_setup(void);
#endif
#ifdef CONFIG_LPC43_UART1
EXTERN void lpc43_uart1_setup(void);
#endif
#ifdef CONFIG_LPC43_USART2
EXTERN void lpc43_usart2_setup(void);
#endif
#ifdef CONFIG_LPC43_USART3
EXTERN void lpc43_usart3_setup(void);
#endif
/****************************************************************************
* Name: lpc43_setbaud
*
* Description:
* Configure the U[S]ART divisors to accomplish the desired BAUD given the
* U[S]ART base frequency.
*
* This computationally intensive algorithm is based on the same logic
* used in the NXP sample code.
*
****************************************************************************/
EXTERN void lpc43_setbaud(uintptr_t uartbase, uint32_t basefreq, uint32_t baud);
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_ARM_SRC_LPC43XX_LPC43_LOWSETUP_H */
