/************************************************************************************ * arch/arm/include/lpc17xx/chip.h * * Copyright (C) 2010-2011, 2013 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * 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 /************************************************************************************ * 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 up_irq_save() 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 */