129 lines
4.9 KiB
C
129 lines
4.9 KiB
C
/************************************************************************************
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* configs/demo9s12ne64/include/board.h
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* include/arch/board/board.h
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*
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* Copyright (C) 2009, 2011 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_BOARD_BOARD_H
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#define __ARCH_BOARD_BOARD_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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#ifndef __ASSEMBLY__
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# include <stdint.h>
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#endif
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/************************************************************************************
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* Pre-processor Definitions
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************************************************************************************/
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/* Clocking *************************************************************************/
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/* Frequency of the crystal oscillator */
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#define HCS12_OSCCLK 16000000 /* 16MHz */
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/* PLL Settings
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*
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* SYNR register controls the multiplication factor of the PLL. If the PLL is on, the
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* count in the loop divider (SYNR) register effectively multiplies up the PLL clock
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* (PLLCLK) from the reference frequency by 2 x (SYNR+1). PLLCLK will not be below
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* the minimum VCO frequency (fSCM).
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*
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* The REFDV register provides a finer granularity for the PLL multiplier steps. The
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* count in the reference divider divides OSCCLK frequency by REFDV + 1.
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*
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* PLLCLK = 2 * OSCCLK * (SYNR + 1) / (REFDV + 1)
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*
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* If (PLLSEL = 1), Bus Clock = PLLCLK / 2
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*/
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#define HCS12_SYNR_VALUE 0x15
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#define HCS12_REFDV_VALUE 0x15
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#define HCS12_PLLCLK (2*HCS12_OSCCLK*(HCS12_SYNR+1)/(HCS12_REFDV+1))
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#define HCS12_BUSCLK (HSC12_PLLCLK/2)
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/* LED definitions ******************************************************************/
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/* The DEMO9S12NE64 board has 2 LEDs that we will encode as: */
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#define LED_STARTED 1 /* LED1 */
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#define LED_HEAPALLOCATE 1 /* LED1 */
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#define LED_IRQSENABLED 1 /* LED1 */
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#define LED_STACKCREATED 1 /* LED1 */
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#define LED_INIRQ 2 /* LED1 + LED2 */
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#define LED_SIGNAL 2 /* LED1 + LED2 */
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#define LED_ASSERTION 2 /* LED1 + LED2 */
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#define LED_PANIC 7 /* LED2 + N/C */
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/* Button definitions ***************************************************************/
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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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#else
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#define EXTERN extern
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#endif
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/************************************************************************************
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* Public Function Prototypes
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************************************************************************************/
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/************************************************************************************
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* Name: hcs12_boardinitialize
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*
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* Description:
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* All HCS12 architectures must provide the following entry point. This entry point
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* is called early in the intitialization -- after all memory has been configured
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* and mapped but before any devices have been initialized.
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*
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************************************************************************************/
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void hcs12_boardinitialize(void);
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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_BOARD_BOARD_H */
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