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/************************************************************************************
* arch/hc/src/m9s12/serial.h
*
* Copyright (C) 2011 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_HC_SRC_M9S12_CHIP_H
#define __ARCH_HC_SRC_M9S12_CHIP_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#include <arch/board/board.h>
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/* Configuration ********************************************************************/
/* Is there a SCI enabled? */
#if defined(CONFIG_SCI0_DISABLE) && defined(CONFIG_SCI1_DISABLE)
# undef HAVE_SERIAL_DEVICE
# warning "No SCIs enabled"
#else
# define HAVE_SERIAL_DEVICE 1
#endif
/* Is there a serial console? */
#if defined(CONFIG_SCI0_SERIAL_CONSOLE) && !defined(CONFIG_SCI0_DISABLE)
# undef CONFIG_SCI1_SERIAL_CONSOLE
# define HAVE_SERIAL_CONSOLE 1
#elif defined(CONFIG_SCI1_SERIAL_CONSOLE) && !defined(CONFIG_SCI1_DISABLE)
# undef CONFIG_SCI0_SERIAL_CONSOLE
# define HAVE_SERIAL_CONSOLE 1
#else
# warning "No valid CONFIG_SCIn_SERIAL_CONSOLE Setting"
# undef CONFIG_SCI0_SERIAL_CONSOLE
# undef CONFIG_SCI1_SERIAL_CONSOLE
# undef HAVE_SERIAL_CONSOLE
#endif
/* Sanity checking */
#ifndef CONFIG_SCI0_DISABLE
# ifndef CONFIG_SCI0_PARITY
# warning "CONFIG_SCI0_PARITY not defined -- Assuming none"
# define CONFIG_SCI0_PARITY 0
# elif CONFIG_SCI0_PARITY != 0 && CONFIG_SCI0_PARITY != 2 && CONFIG_SCI0_PARITY != 2
# error "CONFIG_SCI0_PARITY value not recognized"
# endif
# ifndef CONFIG_SCI0_BITS
# warning "CONFIG_SCI0_BITS not defined -- Assuming 8"
# define CONFIG_SCI0_BITS 8
# elif CONFIG_SCI0_BITS != 8 && CONFIG_SCI0_BITS != 9
# error "CONFIG_SCI0_BITS value not supported"
# endif
# if defined(CONFIG_SCI0_2STOP) && CONFIG_SCI0_2STOP != 0
# error "Only a single stop bit is supported"
# endif
#endif
#ifndef CONFIG_SCI1_DISABLE
# ifndef CONFIG_SCI1_PARITY
# warning "CONFIG_SCI1_PARITY not defined -- Assuming none"
# define CONFIG_SCI1_PARITY 0
# elif CONFIG_SCI1_PARITY != 0 && CONFIG_SCI1_PARITY != 2 && CONFIG_SCI1_PARITY != 2
# error "CONFIG_SCI1_PARITY value not recognized"
# endif
# ifndef CONFIG_SCI1_BITS
# warning "CONFIG_SCI1_BITS not defined -- Assuming 8"
# define CONFIG_SCI1_BITS 8
# elif CONFIG_SCI1_BITS != 8 && CONFIG_SCI1_BITS != 9
# error "CONFIG_SCI1_BITS value not supported"
# endif
# if defined(CONFIG_SCI1_2STOP) && CONFIG_SCI1_2STOP != 0
# error "Only a single stop bit is supported"
# endif
#endif
/* BAUD *****************************************************************************/
/* Baud calculations. The SCI module is driven by the BUSCLK. The SCIBR
* register value divides down the BUSCLK to accomplish the required BAUD.
*
* BAUD = HCS12_BUSCLK / (16 * SCIBR)
* SCIBR = HCS12_BUSCLK / (16 * BAUD)
*/
#define SCIBR_VALUE(b) ((HCS12_BUSCLK * (b) + ((b) << 3))/((b) << 4))
/************************************************************************************
* Public Types
************************************************************************************/
/************************************************************************************
* Public Data
************************************************************************************/
/************************************************************************************
* Public Functions
************************************************************************************/
#endif /* __ARCH_HC_SRC_M9S12_CHIP_H */
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