nuttx/arch/arm/src/sam3u/chip.h
patacongo 75907a8dc0 Add framework for a SAM3U SPI driver
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4010 42af7a65-404d-4744-a932-0658087f49c3
2011-10-03 14:06:06 +00:00

98 lines
4.0 KiB
C

/************************************************************************************
* arch/arm/src/sam3u/chip.h
*
* Copyright (C) 2009-2010 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* 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_SRC_SAM3U_CHIP_H
#define __ARCH_ARM_SRC_SAM3U_CHIP_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/* Get customizations for each supported chip */
#ifdef CONFIG_ARCH_CHIP_AT91SAM3U4E
/* Internal memory */
# define CONFIG_SAM3U_SRAM0_SIZE 0x00008000 /* 32Kb */
# define CONFIG_SAM3U_SRAM1_SIZE 0x00004000 /* 16Kb */
# define CONFIG_SAM3U_NFCSRAM_SIZE 0x00001000 /* 4Kb */
/* DMA */
# define CONFIG_SAM3U_NDMACHAN 4 /* 4 DMA Channels */
/* Memory card interface */
# define CONFIG_SAM3U_MCI2 1
#else
# error "Unknown SAM3U chip type"
#endif
/* Include only the memory map. Other chip hardware files should then include this
* file for the proper setup
*/
#include "sam3u_memorymap.h"
/* NVIC priority levels *************************************************************/
/* Each priority field holds a priority value, 0-15. The lower the value, the greater
* the priority of the corresponding interrupt. The processor implements only
* bits[7:4] of each field, bits[3:0] read as zero and ignore writes.
*/
#define NVIC_SYSH_PRIORITY_MIN 0xf0 /* All bits[7:4] set is minimum priority */
#define NVIC_SYSH_PRIORITY_DEFAULT 0x80 /* Midpoint is the default */
#define NVIC_SYSH_PRIORITY_MAX 0x00 /* Zero is maximum priority */
/************************************************************************************
* Public Types
************************************************************************************/
/************************************************************************************
* Public Data
************************************************************************************/
/************************************************************************************
* Public Functions
************************************************************************************/
#endif /* __ARCH_ARM_SRC_SAM3U_CHIP_H */