nuttx/boards/hc/m9s12/demo9s12ne64/include/board.h

/****************************************************************************
 * boards/hc/m9s12/demo9s12ne64/include/board.h
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.  The
 * ASF licenses this file to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance with the
 * License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations
 * under the License.
 *
 ****************************************************************************/

#ifndef __BOARDS_HC_M9S12_DEMO9S12NE64_INCLUDE_BOARD_H
#define __BOARDS_HC_M9S12_DEMO9S12NE64_INCLUDE_BOARD_H

/****************************************************************************
 * Included Files
 ****************************************************************************/

#include <nuttx/config.h>
#ifndef __ASSEMBLY__
# include <stdint.h>
#endif

/****************************************************************************
 * Pre-processor Definitions
 ****************************************************************************/

/* Clocking *****************************************************************/

/* Frequency of the crystal oscillator */

#define HCS12_OSCCLK      16000000 /* 16MHz */

/* PLL Settings
 *
 * SYNR register controls the multiplication factor of the PLL.
 * If the PLL is on, the count in the loop divider (SYNR) register
 * effectively multiplies up the PLL clock (PLLCLK) from the reference
 * frequency by 2 x(SYNR+1).
 * PLLCLK will not be below the minimum VCO frequency (fSCM).
 *
 * The REFDV register provides a finer granularity for the PLL multiplier
 * steps.
 * The count in the reference divider divides OSCCLK frequency by REFDV + 1.
 *
 *   PLLCLK = 2 * OSCCLK * (SYNR + 1) / (REFDV + 1)
 *
 * If (PLLSEL = 1), Bus Clock = PLLCLK / 2
 */

#define HCS12_SYNR_VALUE  0x15
#define HCS12_REFDV_VALUE 0x15
#define HCS12_PLLCLK      (2*HCS12_OSCCLK*(HCS12_SYNR+1)/(HCS12_REFDV+1))
#define HCS12_BUSCLK      (HSC12_PLLCLK/2)

/* LED definitions **********************************************************/

/* The DEMO9S12NE64 board has 2 LEDs that we will encode as: */

#define LED_STARTED       1  /* LED1 */
#define LED_HEAPALLOCATE  1  /* LED1 */
#define LED_IRQSENABLED   1  /* LED1 */
#define LED_STACKCREATED  1  /* LED1 */
#define LED_INIRQ         2  /* LED1 + LED2 */
#define LED_SIGNAL        2  /* LED1 + LED2 */
#define LED_ASSERTION     2  /* LED1 + LED2 */
#define LED_PANIC         7  /* LED2 + N/C  */

/* Button definitions *******************************************************/

#endif /* __BOARDS_HC_M9S12_DEMO9S12NE64_INCLUDE_BOARD_H */