incubator-nuttx/arch/arm/include/lpc17xx/chip.h

438 lines
24 KiB
C

/************************************************************************************
* arch/arm/include/lpc17xx/chip.h
*
* Copyright (C) 2010-2011, 2013 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
* with LPC178x support from Rommel Marcelo
*
* 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_LPC17XX_CHIP_H
#define __ARCH_ARM_INCLUDE_LPC17XX_CHIP_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/* Get customizations for each supported chip */
#if defined(CONFIG_ARCH_CHIP_LPC1751)
# define LPC176x 1 /* LPC175/6 family */
# undef LPC178x /* Not LPC177/8 family */
# define LPC17_FLASH_SIZE (32*1024) /* 32Kb */
# define LPC17_SRAM_SIZE (8*1024) /* 8Kb */
# define LPC17_CPUSRAM_SIZE (8*1024)
# undef LPC17_HAVE_BANK0 /* No AHB SRAM bank 0 */
# undef LPC17_HAVE_BANK1 /* No AHB SRAM bank 1 */
# define LPC17_NETHCONTROLLERS 0 /* No Ethernet controller */
# define LPC17_NUSBHOST 0 /* No USB host controller */
# define LPC17_NUSBOTG 0 /* No USB OTG controller */
# define LPC17_NUSBDEV 1 /* One USB device controller */
# define LPC17_NCAN 1 /* One CAN controller */
# define LPC17_NI2S 0 /* No I2S modules */
# define LPC17_NDAC 0 /* No DAC module */
#elif defined(CONFIG_ARCH_CHIP_LPC1752)
# define LPC176x 1 /* LPC175/6 family */
# undef LPC178x /* Not LPC177/8 family */
# define LPC17_FLASH_SIZE (64*1024) /* 65Kb */
# define LPC17_SRAM_SIZE (16*1024) /* 16Kb */
# define LPC17_CPUSRAM_SIZE (16*1024)
# undef LPC17_HAVE_BANK0 /* No AHB SRAM bank 0 */
# undef LPC17_HAVE_BANK1 /* No AHB SRAM bank 1 */
# define LPC17_NETHCONTROLLERS 0 /* No Ethernet controller */
# define LPC17_NUSBHOST 0 /* No USB host controller */
# define LPC17_NUSBOTG 0 /* No USB OTG controller */
# define LPC17_NUSBDEV 1 /* One USB device controller */
# define LPC17_NCAN 1 /* One CAN controller */
# define LPC17_NI2S 0 /* No I2S modules */
# define LPC17_NDAC 0 /* No DAC module */
#elif defined(CONFIG_ARCH_CHIP_LPC1754)
# define LPC176x 1 /* LPC175/6 family */
# undef LPC178x /* Not LPC177/8 family */
# define LPC17_FLASH_SIZE (128*1024) /* 128Kb */
# define LPC17_SRAM_SIZE (32*1024) /* 32Kb */
# define LPC17_CPUSRAM_SIZE (16*1024)
# define LPC17_HAVE_BANK0 1 /* Have AHB SRAM bank 0 */
# undef LPC17_HAVE_BANK1 /* No AHB SRAM bank 1 */
# define LPC17_NETHCONTROLLERS 0 /* No Ethernet controller */
# define LPC17_NUSBHOST 1 /* One USB host controller */
# define LPC17_NUSBOTG 1 /* One USB OTG controller */
# define LPC17_NUSBDEV 1 /* One USB device controller */
# define LPC17_NCAN 1 /* One CAN controller */
# define LPC17_NI2S 0 /* No I2S modules */
# define LPC17_NDAC 1 /* One DAC module */
#elif defined(CONFIG_ARCH_CHIP_LPC1756)
# define LPC176x 1 /* LPC175/6 family */
# undef LPC178x /* Not LPC177/8 family */
# define LPC17_FLASH_SIZE (256*1024) /* 256Kb */
# define LPC17_SRAM_SIZE (32*1024) /* 32Kb */
# define LPC17_CPUSRAM_SIZE (16*1024)
# define LPC17_HAVE_BANK0 1 /* No AHB SRAM bank 0 */
# undef LPC17_HAVE_BANK1 /* No AHB SRAM bank 1 */
# define LPC17_NETHCONTROLLERS 0 /* No Ethernet controller */
# define LPC17_NUSBHOST 1 /* One USB host controller */
# define LPC17_NUSBOTG 1 /* One USB OTG controller */
# define LPC17_NUSBDEV 1 /* One USB device controller */
# define LPC17_NCAN 2 /* Two CAN controllers */
# define LPC17_NI2S 1 /* One I2S module */
# define LPC17_NDAC 1 /* One DAC module */
#elif defined(CONFIG_ARCH_CHIP_LPC1758)
# define LPC176x 1 /* LPC175/6 family */
# undef LPC178x /* Not LPC177/8 family */
# define LPC17_FLASH_SIZE (512*1024) /* 512Kb */
# define LPC17_SRAM_SIZE (64*1024) /* 64Kb */
# define LPC17_CPUSRAM_SIZE (32*1024)
# define LPC17_HAVE_BANK0 1 /* Have AHB SRAM bank 0 */
# define LPC17_HAVE_BANK1 1 /* Have AHB SRAM bank 1 */
# define LPC17_NETHCONTROLLERS 1 /* One Ethernet controller */
# define LPC17_NUSBHOST 1 /* One USB host controller */
# define LPC17_NUSBOTG 1 /* One USB OTG controller */
# define LPC17_NUSBDEV 1 /* One USB device controller */
# define LPC17_NCAN 2 /* Two CAN controllers */
# define LPC17_NI2S 1 /* One I2S module */
# define LPC17_NDAC 1 /* One DAC module */
#elif defined(CONFIG_ARCH_CHIP_LPC1759)
# define LPC176x 1 /* LPC175/6 family */
# undef LPC178x /* Not LPC177/8 family */
# define LPC17_FLASH_SIZE (512*1024) /* 512Kb */
# define LPC17_SRAM_SIZE (64*1024) /* 64Kb */
# define LPC17_CPUSRAM_SIZE (32*1024)
# define LPC17_HAVE_BANK0 1 /* Have AHB SRAM bank 0 */
# define LPC17_HAVE_BANK1 1 /* Have AHB SRAM bank 1 */
# define LPC17_NETHCONTROLLERS 0 /* No Ethernet controller */
# define LPC17_NUSBHOST 1 /* One USB host controller */
# define LPC17_NUSBOTG 1 /* One USB OTG controller */
# define LPC17_NUSBDEV 1 /* One USB device controller */
# define LPC17_NCAN 2 /* Two CAN controllers */
# define LPC17_NI2S 1 /* One I2S module */
# define LPC17_NDAC 1 /* One DAC module */
#elif defined(CONFIG_ARCH_CHIP_LPC1764)
# define LPC176x 1 /* LPC175/6 family */
# undef LPC178x /* Not LPC177/8 family */
# define LPC17_FLASH_SIZE (128*1024) /* 128Kb */
# define LPC17_SRAM_SIZE (32*1024) /* 32Kb */
# define LPC17_CPUSRAM_SIZE (16*1024)
# define LPC17_HAVE_BANK0 1 /* Have AHB SRAM bank 0 */
# undef LPC17_HAVE_BANK1 /* No AHB SRAM bank 1 */
# define LPC17_NETHCONTROLLERS 1 /* One Ethernet controller */
# define LPC17_NUSBHOST 0 /* No USB host controller */
# define LPC17_NUSBOTG 0 /* No USB OTG controller */
# define LPC17_NUSBDEV 1 /* One USB device controller */
# define LPC17_NCAN 2 /* Two CAN controllers */
# define LPC17_NI2S 0 /* No I2S modules */
# define LPC17_NDAC 0 /* No DAC module */
#elif defined(CONFIG_ARCH_CHIP_LPC1765)
# define LPC176x 1 /* LPC175/6 family */
# undef LPC178x /* Not LPC177/8 family */
# define LPC17_FLASH_SIZE (256*1024) /* 256Kb */
# define LPC17_SRAM_SIZE (64*1024) /* 64Kb */
# define LPC17_CPUSRAM_SIZE (32*1024)
# define LPC17_HAVE_BANK0 1 /* Have AHB SRAM bank 0 */
# define LPC17_HAVE_BANK1 1 /* Have AHB SRAM bank 1 */
# define LPC17_NETHCONTROLLERS 0 /* No Ethernet controller */
# define LPC17_NUSBHOST 1 /* One USB host controller */
# define LPC17_NUSBOTG 1 /* One USB OTG controller */
# define LPC17_NUSBDEV 1 /* One USB device controller */
# define LPC17_NCAN 2 /* Two CAN controllers */
# define LPC17_NI2S 1 /* One I2S module */
# define LPC17_NDAC 1 /* One DAC module */
#elif defined(CONFIG_ARCH_CHIP_LPC1766)
# define LPC176x 1 /* LPC175/6 family */
# undef LPC178x /* Not LPC177/8 family */
# define LPC17_FLASH_SIZE (256*1024) /* 256Kb */
# define LPC17_SRAM_SIZE (64*1024) /* 64Kb */
# define LPC17_CPUSRAM_SIZE (32*1024)
# define LPC17_HAVE_BANK0 1 /* Have AHB SRAM bank 0 */
# define LPC17_HAVE_BANK1 1 /* Have AHB SRAM bank 1 */
# define LPC17_NETHCONTROLLERS 1 /* One Ethernet controller */
# define LPC17_NUSBHOST 1 /* One USB host controller */
# define LPC17_NUSBOTG 1 /* One USB OTG controller */
# define LPC17_NUSBDEV 1 /* One USB device controller */
# define LPC17_NCAN 2 /* Two CAN controllers */
# define LPC17_NI2S 1 /* One I2S module */
# define LPC17_NDAC 1 /* One DAC module */
#elif defined(CONFIG_ARCH_CHIP_LPC1767)
# define LPC176x 1 /* LPC175/6 family */
# undef LPC178x /* Not LPC177/8 family */
# define LPC17_FLASH_SIZE (512*1024) /* 512Kb */
# define LPC17_SRAM_SIZE (64*1024) /* 64Kb */
# define LPC17_CPUSRAM_SIZE (32*1024)
# define LPC17_HAVE_BANK0 1 /* Have AHB SRAM bank 0 */
# define LPC17_HAVE_BANK1 1 /* Have AHB SRAM bank 1 */
# define LPC17_NETHCONTROLLERS 1 /* One Ethernet controller */
# define LPC17_NUSBHOST 0 /* No USB host controller */
# define LPC17_NUSBOTG 0 /* No USB OTG controller */
# define LPC17_NUSBDEV 0 /* No USB device controller */
# define LPC17_NCAN 0 /* No CAN controllers */
# define LPC17_NI2S 1 /* One I2S module */
# define LPC17_NDAC 1 /* One DAC module */
#elif defined(CONFIG_ARCH_CHIP_LPC1769) || defined(CONFIG_ARCH_CHIP_LPC1768)
# define LPC176x 1 /* LPC175/6 family */
# undef LPC178x /* Not LPC177/8 family */
# define LPC17_FLASH_SIZE (512*1024) /* 512Kb */
# define LPC17_SRAM_SIZE (64*1024) /* 64Kb */
# define LPC17_CPUSRAM_SIZE (32*1024)
# define LPC17_HAVE_BANK0 1 /* Have AHB SRAM bank 0 */
# define LPC17_HAVE_BANK1 1 /* Have AHB SRAM bank 1 */
# define LPC17_NETHCONTROLLERS 1 /* One Ethernet controller */
# define LPC17_NUSBHOST 1 /* One USB host controller */
# define LPC17_NUSBOTG 1 /* One USB OTG controller */
# define LPC17_NUSBDEV 1 /* One USB device controller */
# define LPC17_NCAN 2 /* Two CAN controllers */
# define LPC17_NI2S 1 /* One I2S module */
# define LPC17_NDAC 1 /* One DAC module */
#elif defined(CONFIG_ARCH_CHIP_LPC1773)
# undef LPC176x /* Not LPC175/6 family */
# define LPC178x 1 /* LPC177/8 family */
# define LPC17_FLASH_SIZE (128*1024) /* 128Kb */
# define LPC17_SRAM_SIZE (40*1024) /* 40Kb */
# define LPC17_CPUSRAM_SIZE (32*1024)
# define LPC17_HAVE_BANK0 1 /* Have Peripheral SRAM bank 0 */
# undef LPC17_HAVE_BANK1 /* No Peripheral SRAM bank 1 */
# define LPC17_NETHCONTROLLERS 1 /* One Ethernet controller */
# undef LPC17_NUSBHOST /* No USB host controller */
# undef LPC17_NUSBOTG /* No USB OTG controller */
# define LPC17_NUSBDEV 1 /* One USB device controller */
# define LPC17_HAVE_SPIFI 1 /* Have SPIFI interface */
# undef LPC17_HAVE_LCD /* No LCD controller */
# undef LPC17_HAVE_QEI /* No QEI interface */
# undef LPC17_HAVE_SD /* No SD controller */
#elif defined(CONFIG_ARCH_CHIP_LPC1774)
# undef LPC176x /* Not LPC175/6 family */
# define LPC178x 1 /* LPC177/8 family */
# define LPC17_FLASH_SIZE (128*1024) /* 128Kb */
# define LPC17_SRAM_SIZE (40*1024) /* 40Kb */
# define LPC17_CPUSRAM_SIZE (32*1024)
# define LPC17_HAVE_BANK0 1 /* Have Peripheral SRAM bank 0*/
# undef LPC17_HAVE_BANK1 /* Have Peripheral SRAM bank 1 */
# define LPC17_NETHCONTROLLERS 1 /* One Ethernet controller */
# undef LPC17_NUSBHOST /* One USB host controller */
# undef LPC17_NUSBOTG /* One USB OTG controller */
# define LPC17_NUSBDEV 1 /* One USB device controller */
# undef LPC17_HAVE_SPIFI /* Have SPIFI interface */
# undef LPC17_HAVE_LCD /* One LCD controller */
# define LPC17_HAVE_QEI 1 /* One QEI interface */
# define LPC17_HAVE_SD 1 /* One SD controller */
#elif defined(CONFIG_ARCH_CHIP_LPC1776)
# undef LPC176x /* Not LPC175/6 family */
# define LPC178x 1 /* LPC177/8 family */
# define LPC17_FLASH_SIZE (256*1024) /* 256Kb */
# define LPC17_SRAM_SIZE (80*1024) /* 80Kb */
# define LPC17_CPUSRAM_SIZE (64*1024)
# define LPC17_HAVE_BANK0 1 /* Have Peripheral SRAM bank 0 */
# undef LPC17_HAVE_BANK1 /* Have Peripheral SRAM bank 1 */
# define LPC17_NETHCONTROLLERS 1 /* One Ethernet controller */
# define LPC17_NUSBHOST 1 /* One USB host controller */
# define LPC17_NUSBOTG 1 /* One USB OTG controller */
# define LPC17_NUSBDEV 1 /* One USB device controller */
# undef LPC17_HAVE_SPIFI /* Have SPIFI interface */
# undef LPC17_HAVE_LCD /* One LCD controller */
# define LPC17_HAVE_QEI 1 /* One QEI interface */
# define LPC17_HAVE_SD 1 /* One SD controller */
#elif defined(CONFIG_ARCH_CHIP_LPC1777)
# undef LPC176x /* Not LPC175/6 family */
# define LPC178x 1 /* LPC177/8 family */
# define LPC17_FLASH_SIZE (512*1024) /* 512Kb */
# define LPC17_SRAM_SIZE (96*1024) /* 96Kb */
# define LPC17_CPUSRAM_SIZE (64*1024)
# define LPC17_HAVE_BANK0 1 /* Have Peripheral SRAM bank 0 */
# define LPC17_HAVE_BANK1 1 /* Have Peripheral SRAM bank 1 */
# undef LPC17_NETHCONTROLLERS /* One Ethernet controller */
# define LPC17_NUSBHOST 1 /* One USB host controller */
# define LPC17_NUSBOTG 1 /* One USB OTG controller */
# define LPC17_NUSBDEV 1 /* One USB device controller */
# undef LPC17_HAVE_SPIFI /* Have SPIFI interface */
# undef LPC17_HAVE_LCD /* One LCD controller */
# define LPC17_HAVE_QEI 1 /* One QEI interface */
# define LPC17_HAVE_SD 1 /* One SD controller */
#elif defined(CONFIG_ARCH_CHIP_LPC1778)
# undef LPC176x /* Not LPC175/6 family */
# define LPC178x 1 /* LPC177/8 family */
# define LPC17_FLASH_SIZE (512*1024) /* 512Kb */
# define LPC17_SRAM_SIZE (96*1024) /* 64Kb */
# define LPC17_CPUSRAM_SIZE (64*1024)
# define LPC17_HAVE_BANK0 1 /* Have Peripheral SRAM bank 0 */
# define LPC17_HAVE_BANK1 1 /* Have Peripheral SRAM bank 1 */
# define LPC17_NETHCONTROLLERS 1 /* One Ethernet controller */
# define LPC17_NUSBHOST 1 /* One USB host controller */
# define LPC17_NUSBOTG 1 /* One USB OTG controller */
# define LPC17_NUSBDEV 1 /* One USB device controller */
# undef LPC17_HAVE_SPIFI /* Have SPIFI interface */
# undef LPC17_HAVE_LCD /* One LCD controller */
# define LPC17_HAVE_QEI 1 /* One QEI interface */
# define LPC17_HAVE_SD 1 /* One SD controller */
#elif defined(CONFIG_ARCH_CHIP_LPC1785)
# undef LPC176x /* Not LPC175/6 family */
# define LPC178x 1 /* LPC177/8 family */
# define LPC17_FLASH_SIZE (256*1024) /* 256Kb */
# define LPC17_SRAM_SIZE (80*1024) /* 80Kb */
# define LPC17_CPUSRAM_SIZE (64*1024)
# define LPC17_HAVE_BANK0 1 /* Have Peripheral SRAM bank 0 */
# undef LPC17_HAVE_BANK1 /* Have Peripheral SRAM bank 1 */
# undef LPC17_NETHCONTROLLERS /* One Ethernet controller */
# define LPC17_NUSBHOST 1 /* One USB host controller */
# define LPC17_NUSBOTG 1 /* One USB OTG controller */
# define LPC17_NUSBDEV 1 /* One USB device controller */
# undef LPC17_HAVE_SPIFI /* Have SPIFI interface */
# define LPC17_HAVE_LCD 1 /* One LCD controller */
# undef LPC17_HAVE_QEI /* One QEI interface */
# define LPC17_HAVE_SD 1 /* One SD controller */
#elif defined(CONFIG_ARCH_CHIP_LPC1786)
# undef LPC176x /* Not LPC175/6 family */
# define LPC178x 1 /* LPC177/8 family */
# define LPC17_FLASH_SIZE (256*1024) /* 256Kb */
# define LPC17_SRAM_SIZE (80*1024) /* 80Kb */
# define LPC17_CPUSRAM_SIZE (64*1024)
# define LPC17_HAVE_BANK0 1 /* Have Peripheral SRAM bank 0 */
# undef LPC17_HAVE_BANK1 /* Have Peripheral SRAM bank 1 */
# define LPC17_NETHCONTROLLERS 1 /* One Ethernet controller */
# define LPC17_NUSBHOST 1 /* One USB host controller */
# define LPC17_NUSBOTG 1 /* One USB OTG controller */
# define LPC17_NUSBDEV 1 /* One USB device controller */
# undef LPC17_HAVE_SPIFI /* Have SPIFI interface */
# define LPC17_HAVE_LCD 1 /* One LCD controller */
# define LPC17_HAVE_QEI 1 /* One QEI interface */
# define LPC17_HAVE_SD 1 /* One SD controller */
#elif defined(CONFIG_ARCH_CHIP_LPC1787)
# undef LPC176x /* Not LPC175/6 family */
# define LPC178x 1 /* LPC177/8 family */
# define LPC17_FLASH_SIZE (512*1024) /* 512Kb */
# define LPC17_SRAM_SIZE (96*1024) /* 96Kb */
# define LPC17_CPUSRAM_SIZE (64*1024)
# define LPC17_HAVE_BANK0 1 /* Have Peripheral SRAM bank 0 */
# define LPC17_HAVE_BANK1 1 /* Have Peripheral SRAM bank 1 */
# undef LPC17_NETHCONTROLLERS /* One Ethernet controller */
# define LPC17_NUSBHOST 1 /* One USB host controller */
# define LPC17_NUSBOTG 1 /* One USB OTG controller */
# define LPC17_NUSBDEV 1 /* One USB device controller */
# undef LPC17_HAVE_SPIFI /* Have SPIFI interface */
# define LPC17_HAVE_LCD 1 /* One LCD controller */
# define LPC17_HAVE_QEI 1 /* One QEI interface */
# define LPC17_HAVE_SD 1 /* One SD controller */
#elif defined(CONFIG_ARCH_CHIP_LPC1788)
# undef LPC176x /* Not LPC175/6 family */
# define LPC178x 1 /* LPC177/8 family */
# define LPC17_FLASH_SIZE (512*1024) /* 512Kb */
# define LPC17_SRAM_SIZE (96*1024) /* 96Kb */
# define LPC17_CPUSRAM_SIZE (64*1024)
# define LPC17_HAVE_BANK0 1 /* Have Peripheral SRAM bank 0 */
# define LPC17_HAVE_BANK1 1 /* Have Peripheral SRAM bank 1 */
# define LPC17_NETHCONTROLLERS 1 /* One Ethernet controller */
# define LPC17_NUSBHOST 1 /* One USB host controller */
# define LPC17_NUSBOTG 1 /* One USB OTG controller */
# define LPC17_NUSBDEV 1 /* One USB device controller */
# undef LPC17_HAVE_SPIFI /* Have SPIFI interface */
# define LPC17_HAVE_LCD 1 /* One LCD controller */
# define LPC17_HAVE_QEI 1 /* One QEI interface */
# define LPC17_HAVE_SD 1 /* One SD controller */
#else
# error "Unsupported LPC17xx chip"
#endif
/* NVIC priority levels *************************************************************/
/* Each priority field holds a priority value, 0-31. The lower the value, the greater
* the priority of the corresponding interrupt. The processor implements only
* bits[7:3] of each field, bits[2:0] read as zero and ignore writes.
*/
#define NVIC_SYSH_PRIORITY_MIN 0xf8 /* All bits[7:3] 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 0x08 /* Five bits of interrupt priority used */
/* If CONFIG_ARMV7M_USEBASEPRI is selected, then interrupts will be disabled
* by setting the BASEPRI register to NVIC_SYSH_DISABLE_PRIORITY so that most
* interrupts will not have execution priority. SVCall must have execution
* priority in all cases.
*
* In the normal cases, interrupts are not nest-able and all interrupts run
* at an execution priority between NVIC_SYSH_PRIORITY_MIN and
* NVIC_SYSH_PRIORITY_MAX (with NVIC_SYSH_PRIORITY_MAX reserved for SVCall).
*
* If, in addition, CONFIG_ARCH_HIPRI_INTERRUPT is defined, then special
* high priority interrupts are supported. These are not "nested" in the
* normal sense of the word. These high priority interrupts can interrupt
* normal processing but execute outside of OS (although they can "get back
* into the game" via a PendSV interrupt).
*
* In the normal course of things, interrupts must occasionally be disabled
* using the irqsave() inline function to prevent contention in use of
* resources that may be shared between interrupt level and non-interrupt
* level logic. Now the question arises, if CONFIG_ARCH_HIPRI_INTERRUPT,
* do we disable all interrupts (except SVCall), or do we only disable the
* "normal" interrupts. Since the high priority interrupts cannot interact
* with the OS, you may want to permit the high priority interrupts even if
* interrupts are disabled. The setting CONFIG_ARCH_INT_DISABLEALL can be
* used to select either behavior:
*
* ----------------------------+--------------+----------------------------
* CONFIG_ARCH_HIPRI_INTERRUPT | NO | YES
* ----------------------------+--------------+--------------+-------------
* CONFIG_ARCH_INT_DISABLEALL | N/A | YES | NO
* ----------------------------+--------------+--------------+-------------
* | | | SVCall
* | SVCall | SVCall | HIGH
* Disable here and below --------> MAXNORMAL ---> HIGH --------> MAXNORMAL
* | | MAXNORMAL |
* ----------------------------+--------------+--------------+-------------
*/
#if defined(CONFIG_ARCH_HIPRI_INTERRUPT) && defined(CONFIG_ARCH_INT_DISABLEALL)
# define NVIC_SYSH_MAXNORMAL_PRIORITY (NVIC_SYSH_PRIORITY_MAX + 2*NVIC_SYSH_PRIORITY_STEP)
# define NVIC_SYSH_HIGH_PRIORITY (NVIC_SYSH_PRIORITY_MAX + NVIC_SYSH_PRIORITY_STEP)
# define NVIC_SYSH_DISABLE_PRIORITY NVIC_SYSH_HIGH_PRIORITY
# define NVIC_SYSH_SVCALL_PRIORITY NVIC_SYSH_PRIORITY_MAX
#else
# define NVIC_SYSH_MAXNORMAL_PRIORITY (NVIC_SYSH_PRIORITY_MAX + NVIC_SYSH_PRIORITY_STEP)
# define NVIC_SYSH_HIGH_PRIORITY NVIC_SYSH_PRIORITY_MAX
# define NVIC_SYSH_DISABLE_PRIORITY NVIC_SYSH_MAXNORMAL_PRIORITY
# define NVIC_SYSH_SVCALL_PRIORITY NVIC_SYSH_PRIORITY_MAX
#endif
/************************************************************************************
* Public Types
************************************************************************************/
/************************************************************************************
* Public Data
************************************************************************************/
/************************************************************************************
* Public Functions
************************************************************************************/
#endif /* __ARCH_ARM_INCLUDE_LPC17XX_CHIP_H */