hotpower 前辈：
看了你的分析"非典架构"，我也遇到了类似的情况，
各种条件正常时丢失中断。
尤其是硬件I2C的中断，稳定性较差。FIQ的外部中断2，丢失较严重。
我用的是LPC2138 + ads1.2 + ucos2 + 中断嵌套（几乎所有的外设中断IRQ）
由于没用过kail,不能直接应用你的文件。
不知如何使用你的"非典架构"，修改我目前的文件，来解决问题。
我的
Startup.s文件
;define the stack size
;定义堆栈的大小
FIQ_STACK_LEGTH EQU 0
IRQ_STACK_LEGTH EQU 9*10 ;every layer need 9 bytes stack , permit 8 layer .每层嵌套需要9个字堆栈，允许8层嵌套
ABT_STACK_LEGTH EQU 0
UND_STACK_LEGTH EQU 0
NoInt EQU 0x80
USR32Mode EQU 0x10
SVC32Mode EQU 0x13
SYS32Mode EQU 0x1f
IRQ32Mode EQU 0x12
FIQ32Mode EQU 0x11
IMPORT __use_no_semihosting_swi
;The imported labels
;引入的外部标号在这声明
IMPORT FIQ_Exception ;Fast interrupt exceptions handler 快速中断异常处理程序
IMPORT __main ;The entry point to the main function C语言主程序入口
IMPORT TargetResetInit ;initialize the target board 目标板基本初始化
IMPORT SoftwareInterrupt
;The emported labels
;给外部使用的标号在这声明
EXPORT bottom_of_heap
EXPORT StackUsr
EXPORT Reset
EXPORT __user_initial_stackheap
CODE32
AREA vectors,CODE,READONLY
ENTRY
;interrupt vectors
;中断向量表
Reset
LDR PC, ResetAddr
LDR PC, UndefinedAddr
LDR PC, SWI_Addr
LDR PC, PrefetchAddr
LDR PC, DataAbortAddr
DCD 0xb9205f80
LDR PC, [PC, #-0xff0]
LDR PC, FIQ_Addr
ResetAddr DCD ResetInit
UndefinedAddr DCD Undefined
SWI_Addr DCD SoftwareInterrupt
PrefetchAddr DCD PrefetchAbort
DataAbortAddr DCD DataAbort
Nouse DCD 0
IRQ_Addr DCD 0
FIQ_Addr DCD FIQ_Handler
;未定义指令
Undefined
B Undefined
;取指令中止
PrefetchAbort
B PrefetchAbort
;取数据中止
DataAbort
B DataAbort
;快速中断
FIQ_Handler
STMFD SP!, {R0-R3, LR}
BL FIQ_Exception
LDMFD SP!, {R0-R3, LR}
SUBS PC, LR, #4
InitStack
MOV R0, LR
;Build the SVC stack
;设置中断模式堆栈
MSR CPSR_c, #0xd2
LDR SP, StackIrq
;Build the FIQ stack
;设置快速中断模式堆栈
MSR CPSR_c, #0xd1
LDR SP, StackFiq
;Build the DATAABORT stack
;设置中止模式堆栈
MSR CPSR_c, #0xd7
LDR SP, StackAbt
;Build the UDF stack
;设置未定义模式堆栈
MSR CPSR_c, #0xdb
LDR SP, StackUnd
;Build the SYS stack
;设置系统模式堆栈
MSR CPSR_c, #0xdf
LDR SP, =StackUsr
MOV PC, R0
ResetInit
BL InitStack ; Initialize the stack 初始化堆栈
BL TargetResetInit ; Initialize the target board 目标板基本初始化
; Jump to the entry point of C program 跳转到c语言入口
B __main
__user_initial_stackheap
LDR r0,=bottom_of_heap
; LDR r1,=StackUsr
MOV pc,lr
StackIrq DCD IrqStackSpace + (IRQ_STACK_LEGTH - 1)* 4
StackFiq DCD FiqStackSpace + (FIQ_STACK_LEGTH - 1)* 4
StackAbt DCD AbtStackSpace + (ABT_STACK_LEGTH - 1)* 4
StackUnd DCD UndtStackSpace + (UND_STACK_LEGTH - 1)* 4
IF :DEF: EN_CRP
IF . >= 0x1fc
INFO 1,"
The data at 0x000001fc must be 0x87654321.
Please delete some source before this line."
ENDIF
CrpData
WHILE . < 0x1fc
NOP
WEND
CrpData1
DCD 0x87654321 ;/*When the Data is 为0x87654321,user code be protected. 当此数为0x87654321时，用户程序被保护 */
ENDIF
;/* 分配堆栈空间 */
AREA MyStacks, DATA, NOINIT, ALIGN=2
IrqStackSpace SPACE IRQ_STACK_LEGTH * 4 ;Stack spaces for Interrupt ReQuest Mode 中断模式堆栈空间
FiqStackSpace SPACE FIQ_STACK_LEGTH * 4 ;Stack spaces for Fast Interrupt reQuest Mode 快速中断模式堆栈空间
AbtStackSpace SPACE ABT_STACK_LEGTH * 4 ;Stack spaces for Suspend Mode 中止义模式堆栈空间
UndtStackSpace SPACE UND_STACK_LEGTH * 4 ;Stack spaces for Undefined Mode 未定义模式堆栈
AREA Heap, DATA, NOINIT
bottom_of_heap SPACE 1
AREA Stacks, DATA, NOINIT
StackUsr
END
我的
初始化函数
void TargetResetInit(void)
{
#ifdef __DEBUG_RAM
MEMMAP = 0x2; //remap
#endif
#ifdef __DEBUG_FLASH
MEMMAP = 0x1; //remap
#endif
#ifdef __IN_CHIP
MEMMAP = 0x1; //remap
#endif
PINSEL0 = (PINSEL0 & 0xFFFF0000) | 0x05 | 0x50;
/* 设置系统各部分时钟 */
/* Set system timers for each component */
PLLCON = 1;
#if (Fpclk / (Fcclk / 4)) == 1
VPBDIV = 0;
#endif
#if (Fpclk / (Fcclk / 4)) == 2
VPBDIV = 2;
#endif
#if (Fpclk / (Fcclk / 4)) == 4
VPBDIV = 1;
#endif
#if (Fcco / Fcclk) == 2
PLLCFG = ((Fcclk / Fosc) - 1) | (0 << 5);
#endif
#if (Fcco / Fcclk) == 4
PLLCFG = ((Fcclk / Fosc) - 1) | (1 << 5);
#endif
#if (Fcco / Fcclk) == 8
PLLCFG = ((Fcclk / Fosc) - 1) | (2 << 5);
#endif
#if (Fcco / Fcclk) == 16
PLLCFG = ((Fcclk / Fosc) - 1) | (3 << 5);
#endif
PLLFEED = 0xaa;
PLLFEED = 0x55;
while((PLLSTAT & (1 << 10)) == 0);
PLLCON = 3;
PLLFEED = 0xaa;
PLLFEED = 0x55;
/* 设置存储器加速模块 */
/* Set memory accelerater module*/
MAMCR = 0;
#if Fcclk < 20000000
MAMTIM = 1;
#else
#if Fcclk < 40000000
MAMTIM = 2;
#else
MAMTIM = 3;
#endif
#endif
MAMCR = 2;
/* 设置串行口 */
/* initialize UART*/
//InitialiseUART0(115200);
/* 设置实时时钟 */
/* initialize RTC*/
CCR = 0x00;
ILR = 0x03;
//PREINT = Fpclk / 32768 - 1;
//PREFRAC = Fpclk - (Fpclk / 32768) * 32768;
YEAR=YEAR%100+2000;
CCR = 0x12;
//CIIR = 0x01; // 设置秒值的增量产生1次中断
ILR = 0x03;
CCR = 0x11; // 启动RTC
/* initialize VIC*/
VICIntEnClr = 0xffffffff;
VICVectAddr = 0;
VICIntSelect = 0;
//T0IR = 0xffffffff;
//T0TCR = 0X02;
//T1IR = 0xffffffff;
//T1TCR = 0X02;
}
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