irq_timer.s

5956470AT91RM9200-uCOS.rar

;定时器中断汇编入口
;- File source          : irq_timer.s
;- Object               : Assembler timer Interrupt Handler.
;-
;- 1.0 14/Feb/03 JPP     : Creation
;------------------------------------------------------------------------------

;------------------------------------------------------------------------------
;- Area Definition
;------------------------------------------------------------------------------
	AREA        itHandler, CODE, READONLY

		INCLUDE		Includes/AT91RM9200.inc		
    	INCLUDE   Interrupt/irq_arm.mac


;------------------------------------------------------------------------------
;- Function             : OSTickISR
;- Treatments           : Timer 0 interrupt handler.
;- Called Functions     : timer_c_irq_handler
;- Called Macros        : IRQ_ENTRY, IRQ_EXIT
;------------------------------------------------------------------------------
			EXPORT OSTickISR
			IMPORT timer_c_irq_handler	;通用定时器服务C函数
OSTickISR					;定时器0汇编入口句柄
;- Manage Exception Entry
 	       IRQ_ENTRY_T0
;- Call the timer Interrupt C handler
		    ldr         r0, =AT91C_BASE_TC0	;定时器指针
            ldr         r1, =timer_c_irq_handler
            mov         r14, pc
            bx          r1            
;- Irq exit
;- Manage Exception Exit
			IRQ_EXIT_T0       
;------------------------------------------------------------------------------
;- Function             : timer1_asm_irq_handler
;- Treatments           : Timer 1 interrupt handler.
;- Called Functions     : timer_c_irq_handler
;- Called Macros        : IRQ_ENTRY, IRQ_EXIT
;------------------------------------------------------------------------------
            EXPORT      timer1_asm_irq_handler
            IMPORT      timer_c_irq_handler
timer1_asm_irq_handler					;定时器1汇编入口句柄

;- Manage Exception Entry
        IRQ_ENTRY_T0

;- Call the timer Interrupt C handler
		    ldr         r0, =AT91C_BASE_TC1
            ldr         r1, =timer_c_irq_handler
            mov         r14, pc
            bx          r1
;exit_irq
;- Manage Exception Exit
            IRQ_EXIT_T0

;------------------------------------------------------------------------------
;- Function             : timer2_asm_irq_handler
;- Treatments           : Timer 2 interrupt handler.
;- Called Functions     : timer_c_irq_handler
;- Called Macros        : IRQ_ENTRY, IRQ_EXIT
;------------------------------------------------------------------------------
            EXPORT      timer2_asm_irq_handler
            IMPORT      timer_c_irq_handler
timer2_asm_irq_handler					;定时器2汇编入口句柄

;- Manage Exception Entry
        	IRQ_ENTRY

;- Call the timer Interrupt C handler
		    ldr         r0, =AT91C_BASE_TC2
            ldr         r1, =timer_c_irq_handler
            mov         r14, pc
            bx          r1
;exit_irq
;- Manage Exception Exit
            IRQ_EXIT

;------------------------------------------------------------------------------
;- Function             : timer3_asm_irq_handler
;- Treatments           : Timer 3 interrupt handler.
;- Called Functions     : timer_c_irq_handler
;- Called Macros        : IRQ_ENTRY, IRQ_EXIT
;------------------------------------------------------------------------------
            EXPORT      timer3_asm_irq_handler
            IMPORT      timer_c_irq_handler
timer3_asm_irq_handler					;定时器3汇编入口句柄

;- Manage Exception Entry
        	IRQ_ENTRY

;- Call the timer Interrupt C handler
		    ldr         r0, =AT91C_BASE_TC3
            ldr         r1, =timer_c_irq_handler
            mov         r14, pc
            bx          r1
;exit_irq
;- Manage Exception Exit
            IRQ_EXIT
            
            END