📄 startup_lpc11xx.s
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;/*****************************************************************************
; * @file: startup_LPC11xx.s
; * @purpose: CMSIS Cortex-M0 Core Device Startup File
; * for the NXP LPC11xx Device Series
; * @version: V1.0
; * @date: 25. Nov. 2008
; *------- <<< Use Configuration Wizard in Context Menu >>> ------------------
; *
; * Copyright (C) 2008 ARM Limited. All rights reserved.
; * ARM Limited (ARM) is supplying this software for use with Cortex-M0
; * processor based microcontrollers. This file can be freely distributed
; * within development tools that are supporting such ARM based processors.
; *
; * THIS SOFTWARE IS PROVIDED "AS IS". NO WARRANTIES, WHETHER EXPRESS, IMPLIED
; * OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
; * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
; * ARM SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR
; * CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
; *
; *****************************************************************************/
; <h> Stack Configuration
; <o> Stack Size (in Bytes) <0x0-0xFFFFFFFF:8>
; </h>
Stack_Size EQU 0x00000100 ;定义栈大小为256字节
AREA STACK, NOINIT, READWRITE, ALIGN=3 ;栈空间 8字节对齐
Stack_Mem SPACE Stack_Size ;分配连续512字节空间,并初始化为0
__initial_sp ;地址标号
; <h> Heap Configuration
; <o> Heap Size (in Bytes) <0x0-0xFFFFFFFF:8>
; </h>
Heap_Size EQU 0x00000000 ;堆空间大小为0
AREA HEAP, NOINIT, READWRITE, ALIGN=3
__heap_base
Heap_Mem SPACE Heap_Size
__heap_limit
PRESERVE8 ;8字节对齐
THUMB ;下面指令为32位THUMB指令
; Vector Table Mapped to Address 0 at Reset
;中断向量表定义
AREA RESET, DATA, READONLY
EXPORT __Vectors
__Vectors DCD __initial_sp ; Top of Stack
DCD Reset_Handler ; Reset Handler
DCD NMI_Handler ; NMI Handler
DCD HardFault_Handler ; Hard Fault Handler
DCD MemManage_Handler ; MPU Fault Handler
DCD BusFault_Handler ; Bus Fault Handler
DCD UsageFault_Handler ; Usage Fault Handler
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD SVC_Handler ; SVCall Handler
DCD DebugMon_Handler ; Debug Monitor Handler
DCD 0 ; Reserved
DCD PendSV_Handler ; PendSV Handler
DCD SysTick_Handler ; SysTick Handler
; External Interrupts
DCD WAKEUP_IRQHandler ; 15 wakeup sources for all the
DCD WAKEUP_IRQHandler ; I/O pins starting from PIO0 (0:11)
DCD WAKEUP_IRQHandler ; all 40 are routed to the same ISR
DCD WAKEUP_IRQHandler
DCD WAKEUP_IRQHandler
DCD WAKEUP_IRQHandler
DCD WAKEUP_IRQHandler
DCD WAKEUP_IRQHandler
DCD WAKEUP_IRQHandler
DCD WAKEUP_IRQHandler
DCD WAKEUP_IRQHandler
DCD WAKEUP_IRQHandler
DCD WAKEUP_IRQHandler ; PIO1 (0:11)
DCD CAN_IRQHandler ; CAN
DCD SSP1_IRQHandler ; SSP1
DCD I2C_IRQHandler ; I2C
DCD TIMER16_0_IRQHandler ; 16-bit Timer0
DCD TIMER16_1_IRQHandler ; 16-bit Timer1
DCD TIMER32_0_IRQHandler ; 32-bit Timer0
DCD TIMER32_1_IRQHandler ; 32-bit Timer1
DCD SSP0_IRQHandler ; SSP0
DCD UART_IRQHandler ; UART
DCD USB_IRQHandler ; USB IRQ
DCD USB_FIQHandler ; USB FIQ
DCD ADC_IRQHandler ; A/D Converter
DCD WDT_IRQHandler ; Watchdog timer
DCD BOD_IRQHandler ; Brown Out Detect
DCD FMC_IRQHandler ; IP2111 Flash Memory Controller
DCD PIOINT3_IRQHandler ; PIO INT3
DCD PIOINT2_IRQHandler ; PIO INT2
DCD PIOINT1_IRQHandler ; PIO INT1
DCD PIOINT0_IRQHandler ; PIO INT0
;// <h> Code Read Protection level (CRP)
;// <o> CRP_Level:
;// <0xFFFFFFFF=> Disabled
;// <0x12345678=> CRP1
;// <0x87654321=> CRP2
;// <0x43218765=> CRP3 (OTP 模式，你确认吗?)
;// <0x43218765=> NO_ISP_MAGIC 不允许ISP
;// </h>
CRP_Level EQU 0xffffffff ;加密芯片
IF :LNOT::DEF:NO_CRP ;如果没有定义NO_CRP下面的代码将生效
AREA |.ARM.__at_0x02FC|, CODE, READONLY;加密地址在0x02FC处
CRP_Key DCD CRP_Level
ENDIF
AREA |.text|, CODE, READONLY
; Reset Handler
Reset_Handler PROC
EXPORT Reset_Handler [WEAK]
IMPORT __main
LDR R0, =__main
BX R0
ENDP
; Dummy Exception Handlers (infinite loops which can be modified)
NMI_Handler PROC
EXPORT NMI_Handler [WEAK]
B .
ENDP
HardFault_Handler\
PROC
EXPORT HardFault_Handler [WEAK]
B .
ENDP
MemManage_Handler\
PROC
EXPORT MemManage_Handler [WEAK]
B .
ENDP
BusFault_Handler\
PROC
EXPORT BusFault_Handler [WEAK]
B .
ENDP
UsageFault_Handler\
PROC
EXPORT UsageFault_Handler [WEAK]
B .
ENDP
SVC_Handler PROC
EXPORT SVC_Handler [WEAK]
B .
ENDP
DebugMon_Handler\
PROC
EXPORT DebugMon_Handler [WEAK]
B .
ENDP
PendSV_Handler PROC
EXPORT PendSV_Handler [WEAK]
B .
ENDP
SysTick_Handler PROC
EXPORT SysTick_Handler [WEAK]
B .
ENDP
Default_Handler PROC
EXPORT WAKEUP_IRQHandler [WEAK]
EXPORT CAN_IRQHandler [WEAK]
EXPORT SSP1_IRQHandler [WEAK]
EXPORT I2C_IRQHandler [WEAK]
EXPORT TIMER16_0_IRQHandler [WEAK]
EXPORT TIMER16_1_IRQHandler [WEAK]
EXPORT TIMER32_0_IRQHandler [WEAK]
EXPORT TIMER32_1_IRQHandler [WEAK]
EXPORT SSP0_IRQHandler [WEAK]
EXPORT UART_IRQHandler [WEAK]
EXPORT USB_IRQHandler [WEAK]
EXPORT USB_FIQHandler [WEAK]
EXPORT ADC_IRQHandler [WEAK]
EXPORT WDT_IRQHandler [WEAK]
EXPORT BOD_IRQHandler [WEAK]
EXPORT FMC_IRQHandler [WEAK]
EXPORT PIOINT3_IRQHandler [WEAK]
EXPORT PIOINT2_IRQHandler [WEAK]
EXPORT PIOINT1_IRQHandler [WEAK]
EXPORT PIOINT0_IRQHandler [WEAK]
WAKEUP_IRQHandler
CAN_IRQHandler
SSP1_IRQHandler
I2C_IRQHandler
TIMER16_0_IRQHandler
TIMER16_1_IRQHandler
TIMER32_0_IRQHandler
TIMER32_1_IRQHandler
SSP0_IRQHandler
UART_IRQHandler
USB_IRQHandler
USB_FIQHandler
ADC_IRQHandler
WDT_IRQHandler
BOD_IRQHandler
FMC_IRQHandler
PIOINT3_IRQHandler
PIOINT2_IRQHandler
PIOINT1_IRQHandler
PIOINT0_IRQHandler
B .
ENDP
ALIGN
; User Initial Stack & Heap
IF :DEF:__MICROLIB ;如果使用微库
EXPORT __initial_sp
EXPORT __heap_base
EXPORT __heap_limit ;提供堆栈参数给编译器
ELSE ;用户自己实现堆栈初始化__user_initial_stackheap
IMPORT __use_two_region_memory ;使用双区模型配置堆和栈(堆由基址向上增长,栈由基址向下增长)
EXPORT __user_initial_stackheap
__user_initial_stackheap
LDR R0, = Heap_Mem
LDR R1, =(Stack_Mem + Stack_Size)
LDR R2, = (Heap_Mem + Heap_Size)
LDR R3, = Stack_Mem
BX LR
ALIGN
ENDIF
END
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