nuttx/arch/arm/include/xmc4/chip.h

/************************************************************************************
 * arch/arm/include/xmc4/chip.h
 *
 *   Copyright (C) 2017 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_INCLUDE_XMC4_CHIP_H
#define __ARCH_ARM_INCLUDE_XMC4_CHIP_H

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

#include <nuttx/config.h>

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

/* Get customizations for each supported chip */

#if defined(CONFIG_ARCH_CHIP_XMC4500)
#  define XMC4_NUSIC          3          /* Three USIC modules: USCI0-2 */
#  undef  XMC4_SCU_GATING                /* No clock gating registers */
#  define XMC4_NECAT          0          /* No EtherCAT support */
#elif defined(CONFIG_ARCH_CHIP_XMC4700)
#  define XMC4_NUSIC          3          /* Three USIC modules: USCI0-2 */
#  define XMC4_SCU_GATING     1          /* Has clock gating registers */
#  define XMC4_NECAT          0          /* No EtherCAT support */
#elif defined(CONFIG_ARCH_CHIP_XMC4800)
#  define XMC4_NUSIC          3          /* Three USIC modules: USCI0-2 */
#  define XMC4_SCU_GATING     1          /* Has clock gating registers */
#  define XMC4_NECAT          1          /* One EtherCAT module */
#else
#  error "Unsupported XMC4xxx chip"
#endif

/* NVIC priority levels *************************************************************/
/* Each priority field holds a priority value.  The lower the value, the greater the
 * priority of the corresponding interrupt.  The XMC4500 implements only bits[7:2]
 * of this field, bits[1:0] read as zero and ignore writes.
 */

#define NVIC_SYSH_PRIORITY_MIN     0xfc /* All bits[7:2] set is minimum priority */
#define NVIC_SYSH_PRIORITY_DEFAULT 0x80 /* Midpoint is the default */
#define NVIC_SYSH_PRIORITY_MAX     0x00 /* Zero is maximum priority */
#define NVIC_SYSH_PRIORITY_STEP    0x04 /* Steps between supported priority values */

/************************************************************************************
 * Public Types
 ************************************************************************************/

/************************************************************************************
 * Public Data
 ************************************************************************************/

/************************************************************************************
 * Public Functions
 ************************************************************************************/

#endif /* __ARCH_ARM_INCLUDE_XMC4_CHIP_H */