?? main.lst
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ARM COMPILER V2.00f, main 20/02/05 10:09:51 PAGE 1
ARM COMPILER V2.00f, COMPILATION OF MODULE main
OBJECT MODULE PLACED IN main.OBJ
COMPILER INVOKED BY: C:\Keil\ARM\BIN\CA.exe main.c THUMB OPTIMIZE(7,SPEED) BROWSE DEBUG TABS(4)
stmt level source
1 /************************************************************/
2 /* PROJECT NAME: VICnonvector */
3 /* Project: LPC2100 Training course */
4 /* Engineer: T Martin tmartin@hitex.co.uk */
5 /* Filename: main.c */
6 /* Language: C */
7 /* Compiler: Keil ARM V2.00b */
8 /* Assembler: */
9 /* */
10 /************************************************************/
11 /* COPYRIGHT: Hitex UK Ltd 2005 */
12 /* LICENSE: THIS VERSION CREATED FOR FREE DISTRIBUTION */
13 /************************************************************/
14 /* Function: */
15 /* */
16 /* Example configuration of VIC for nonvectored interrupt */
17 /* */
18 /* Demonstrates serving the external interrupt as a non */
19 /* vectored interrupt */
20 /* */
21 /* Oscillator frequency 12.000 Mhz */
22 /* Target board Keil MCB2100 */
23 /************************************************************/
24
25 #include <LPC21xx.H>
26 void NonVectoredIRQ (void)__irq;
27 unsigned update = 0;
28
29 int main (void)
30 {
31 1
32 1 IODIR1 = 0x00FF0000; //Set the LED pins as outputs
33 1 IOCLR1 = 0x00FF0000; //Clear the LED pins
34 1
35 1 PINSEL0 = 0x20000000; //Enable the EXTINT0 interrupt
36 1
37 1 VICDefVectAddr = (unsigned)NonVectoredIRQ; //pass the address of the IRQ into the VIC slot
38 1
39 1 VICIntEnable = 0x8000; //Enable EXTINT0 in the VIC
40 1
41 1 while(1)
42 1 {
43 2 ; //Idle loop
44 2 }
45 1
46 1 }
47
48 void NonVectoredIRQ (void) __irq
49 {
50 1 if(VICIRQStatus&0x00008000) //Test for the interrupt source
51 1 {
52 2 IOSET1 = 0x00FF0000; //Set the LED pins
53 2 EXTINT = 0x00000002; //Clear the peripheral interrupt flag
54 2 }
55 1 VICVectAddr = 0x00000000; //Dummy write to signal end of interrupt
56 1 }
ARM COMPILER V2.00f, main 20/02/05 10:09:51 PAGE 2
ASSEMBLY LISTING OF GENERATED OBJECT CODE
*** EXTERNALS:
EXTERN NUMBER (__startup)
*** PUBLICS:
PUBLIC NonVectoredIRQ?A
PUBLIC main
PUBLIC update
*** DATA SEGMENT '?DT0?main':
00000000 update:
00000000 BEGIN_INIT
00000000 00000000 DD 0x0
00000004 END_INIT
*** CODE SEGMENT '?PR?main?main':
29: int main (void)
00000000 B500 PUSH {LR}
32: IODIR1 = 0x00FF0000; //Set the LED pins as outputs
00000002 4800 LDR R1,=0xFF0000
00000004 4800 LDR R0,=0xE0028018
00000006 6001 STR R1,[R0,#0x0]
33: IOCLR1 = 0x00FF0000; //Clear the LED pins
00000008 4800 LDR R1,=0xFF0000
0000000A 4800 LDR R0,=0xE002801C
0000000C 6001 STR R1,[R0,#0x0]
35: PINSEL0 = 0x20000000; //Enable the EXTINT0 interrupt
0000000E 4800 LDR R1,=0x20000000
00000010 4800 LDR R0,=0xE002C000
00000012 6001 STR R1,[R0,#0x0]
37: VICDefVectAddr = (unsigned)NonVectoredIRQ; //pass the address of the IRQ into the VIC slot
00000014 4900 LDR R1,=NonVectoredIRQ?A ; NonVectoredIRQ?A
00000016 4800 LDR R0,=0xFFFFF034
00000018 6001 STR R1,[R0,#0x0]
39: VICIntEnable = 0x8000; //Enable EXTINT0 in the VIC
0000001A 4800 LDR R1,=0x8000
0000001C 4800 LDR R0,=0xFFFFF010
0000001E 6001 STR R1,[R0,#0x0]
44: }
00000020 L_1:
00000020 E7FE B L_1 ; T=0x00000020
00000022 BC08 POP {R3}
00000024 4718 BX R3
00000026 ENDP ; 'main'
*** CODE SEGMENT '?PR?NonVectoredIRQ?A?main':
48: void NonVectoredIRQ (void) __irq
00000000 E92D0003 STMDB R13!,{R0-R1}
50: if(VICIRQStatus&0x00008000) //Test for the interrupt source
00000004 E5100000 LDR R0,=0xFFFFF000
00000008 E5900000 LDR R0,[R0,#0x0]
0000000C E3100902 TST R0,#0x8000
00000010 0A000005 BEQ L_5 ; Targ=0x2C
52: IOSET1 = 0x00FF0000; //Set the LED pins
00000014 E3A018FF MOV R1,#0xFF0000
00000018 E5100000 LDR R0,=0xE0028014
0000001C E5801000 STR R1,[R0,#0x0]
53: EXTINT = 0x00000002; //Clear the peripheral interrupt flag
00000020 E3A01002 MOV R1,#0x2
00000024 E5100000 LDR R0,=0xE01FC140
00000028 E5C01000 STRB R1,[R0,#0x0]
54: }
0000002C L_5:
55: VICVectAddr = 0x00000000; //Dummy write to signal end of interrupt
0000002C E3A01000 MOV R1,#0x0
ARM COMPILER V2.00f, main 20/02/05 10:09:51 PAGE 3
00000030 E5100000 LDR R0,=0xFFFFF030
00000034 E5801000 STR R1,[R0,#0x0]
56: }
00000038 E8BD0003 LDMIA R13!,{R0-R1}
0000003C E25EF004 SUBS R15,R14,#0x0004
00000040 ENDP ; 'NonVectoredIRQ?A'
Module Information Static
----------------------------------
code size = ------
data size = 4
const size = ------
End of Module Information.
ARM COMPILATION COMPLETE. 0 WARNING(S), 0 ERROR(S)
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