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Removed LED control from FIQ handler in assembler file.

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This commit is contained in:
skarg
2011-03-13 02:26:28 +00:00
parent 2371f4ea53
commit 1baab58598
1 changed files with 23 additions and 34 deletions
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bacnet-stack/ports/at91sam7s/crt.s
+23 -34
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@@ -37,13 +37,13 @@
.set AIC_EOICR, 304 /* End of Interrupt Command Register */
/* identify all GLOBAL symbols */
.global _vec_reset
.global _vec_undef
.global _vec_swi
.global _vec_pabt
.global _vec_dabt
.global _vec_rsv
.global _vec_irq
.global _vec_reset
.global _vec_undef
.global _vec_swi
.global _vec_pabt
.global _vec_dabt
.global _vec_rsv
.global _vec_irq
.global _vec_fiq
.global AT91F_Irq_Handler
.global AT91F_Fiq_Handler
@@ -111,17 +111,6 @@ AT91F_Fiq_Handler:
/* Read the AIC Fast Interrupt Vector register to clear the interrupt */
ldr r12, =AT91C_AIC_FVR
ldr r11, [r12]
/* Turn on LED3 (write 0x0008 to PIOA_CODR at 0xFFFFF434) */
ldr r12, =AT91C_PIOA_CODR
mov r11, #0x04
str r11, [r12]
/* Increment the _FiqCount variable */
ldr r12, =FiqCount
ldr r11, [r12]
add r11, r11, #1
str r11, [r12]
/* Return from Fiq interrupt */
movs pc, lr
@@ -132,7 +121,7 @@ AT91F_Fiq_Handler:
/* */
/* RESET vector 0x00000000 branches to here. */
/* */
/* ARM microprocessor begins execution after RESET at address 0x00000000 */
/* ARM microprocessor begins execution after RESET at address 0x00000000 */
/* in Supervisor mode with interrupts disabled! */
/* */
/* _init_reset handler: creates a stack for each ARM mode. */
@@ -147,30 +136,30 @@ AT91F_Fiq_Handler:
/* ======================================================================== */
.text /* all assembler code that follows will go into .text section */
.align /* align section on 32-bit boundary */
_init_reset:
_init_reset:
/* Setup a stack for each mode with interrupts initially disabled. */
ldr r0, =_stack_end /* r0 = top-of-stack */
msr CPSR_c, #ARM_MODE_UND|I_BIT|F_BIT /* switch to Undefined Instruction Mode */
mov sp, r0 /* set stack pointer for UND mode */
sub r0, r0, #UND_STACK_SIZE /* adjust r0 past UND stack */
msr CPSR_c, #ARM_MODE_ABT|I_BIT|F_BIT /* switch to Abort Mode */
mov sp, r0 /* set stack pointer for ABT mode */
sub r0, r0, #ABT_STACK_SIZE /* adjust r0 past ABT stack */
msr CPSR_c, #ARM_MODE_FIQ|I_BIT|F_BIT /* switch to FIQ Mode */
mov sp, r0 /* set stack pointer for FIQ mode */
mov sp, r0 /* set stack pointer for FIQ mode */
sub r0, r0, #FIQ_STACK_SIZE /* adjust r0 past FIQ stack */
msr CPSR_c, #ARM_MODE_IRQ|I_BIT|F_BIT /* switch to IRQ Mode */
mov sp, r0 /* set stack pointer for IRQ mode */
sub r0, r0, #IRQ_STACK_SIZE /* adjust r0 past IRQ stack */
msr CPSR_c, #ARM_MODE_SVC|I_BIT|F_BIT /* switch to Supervisor Mode */
mov sp, r0 /* set stack pointer for SVC mode */
sub r0, r0, #SVC_STACK_SIZE /* adjust r0 past SVC stack */
msr CPSR_c, #ARM_MODE_SYS|I_BIT|F_BIT /* switch to System Mode */
mov sp, r0 /* set stack pointer for SYS mode */
/* we now start execution in SYSTEM mode */
@@ -233,7 +222,7 @@ _init_reset:
/* File source : Cstartup.s79 */
/* Object : Generic CStartup to AT91SAM7S256 */
/* 1.0 09/May/06 JPP : Creation */
/* */
/* */
/* */
/* Note: taken from Atmel web site (www.at91.com) */
/* Keil example project: AT91SAM7S-Interrupt_SAM7S */
@@ -296,8 +285,8 @@ AT91F_Irq_Handler:
/* ======================================================================== */
AT91F_Dabt_Handler: mov R0, #3
b blinker
/* ======================================================================== */
/* Function: AT91F_Pabt_Handler */
/* */
@@ -307,9 +296,9 @@ AT91F_Dabt_Handler: mov R0, #3
/* */
/* ======================================================================== */
AT91F_Pabt_Handler: mov R0, #2
b blinker
b blinker
/* ======================================================================== */
/* Function: AT91F_Undef_Handler */
/* */
@@ -319,7 +308,7 @@ AT91F_Pabt_Handler: mov R0, #2
/* */
/* ======================================================================== */
AT91F_Undef_Handler: mov R0, #1
b blinker
b blinker
AT91F_Default_FIQ_handler: b AT91F_Default_FIQ_handler