5515b31748
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5666 42af7a65-404d-4744-a932-0658087f49c3
122 lines
4.5 KiB
C
122 lines
4.5 KiB
C
/************************************************************************************
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* arch/arm/src/nuc1xx/nuc_lowputc.h
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*
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* Copyright (C) 2013 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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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
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* are met:
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*
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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
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************************************/
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#ifndef __ARCH_ARM_SRC_NUC1XX_NUC_LOWPUTC_H
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#define __ARCH_ARM_SRC_NUC1XX_NUC_LOWPUTC_H
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/************************************************************************************
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* Included Files
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************************************************************************************/
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#include <nuttx/config.h>
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#include "nuc_config.h"
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/************************************************************************************
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* Pre-processor Definitions
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************************************************************************************/
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/************************************************************************************
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* Public Types
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************************************************************************************/
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/************************************************************************************
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* Public Data
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************************************************************************************/
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#ifndef __ASSEMBLY__
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#undef EXTERN
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/************************************************************************************
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* Public Functions
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************************************************************************************/
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/************************************************************************************
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* Name: nuc_lowsetup
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*
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* Description:
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* Called at the very beginning of _start. Performs low level initialization.
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*
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************************************************************************************/
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void nuc_lowsetup(void);
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/****************************************************************************
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* Name: nuc_setbaud
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*
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* Description:
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* Set the BAUD divxisor for the selected UART
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*
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* Mode DIV_X_EN DIV_X_ONE Divider X BRD (Baud rate equation)
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* -------------------------------------------------------------
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* 0 Disable 0 B A UART_CLK / [16 * (A+2)]
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* 1 Enable 0 B A UART_CLK / [(B+1) * (A+2)] , B must >= 8
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* 2 Enable 1 Don't care A UART_CLK / (A+2), A must >=3
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*
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* Here we assume that the default clock source for the UART modules is
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* the external high speed crystal.
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*
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*****************************************************************************/
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#ifdef HAVE_UART
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void nuc_setbaud(uintptr_t base, uint32_t baud);
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#endif
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/****************************************************************************
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* Name: nuc_lowputc
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*
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* Description:
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* Output one character to the UART using a simple polling method.
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*
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*****************************************************************************/
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#ifdef HAVE_SERIAL_CONSOLE
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void nuc_lowputc(uint32_t ch);
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#endif
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* __ARCH_ARM_SRC_NUC1XX_NUC_LOWPUTC_H */
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