ot_valueset.s

PXA250嵌入式

	IMPORT	osTimerPreDelay

	IMPORT	osTimer_OSMR0
	IMPORT	osTimer_OSMR1
	IMPORT	osTimer_OSMR2
	IMPORT	osTimer_OSMR3
	IMPORT	osTimer_OSCR
	IMPORT	osTimer_OIER
	IMPORT	osTimer_OSSR

	EXPORT	ot_intervalSet

	AREA ot_intervalSet ,CODE ,READONLY

	stmfd r13!,{r4,r5,r10,r14}

	cmp r0,#0x1
	beq intervalSetOT0Branch

	cmp r0,#0x2
	beq intervalSetOT1Branch

	cmp r0,#0x4
	beq intervalSetOT2Branch

	cmp r0,#0x8
	beq intervalSetOT3Branch

	cmp r0,#0xff
	beq intervalClear

	b intervalSetInvalid

intervalSetOT0Branch
	ldr r11,=osTimer_OSMR0
	b intervalSetBranch

intervalSetOT1Branch
	ldr r11,=osTimer_OSMR1
	b intervalSetBranch

intervalSetOT2Branch
	ldr r11,=osTimer_OSMR2
	b intervalSetBranch

intervalSetOT3Branch
	ldr r11,=osTimer_OSMR3
	b intervalSetBranch



intervalSetBranch
	ldr r4,=osTimerPreDelay
	ldr r10,=osTimer_OSCR		
	ldr r5,[r10]
	add r4,r4,r5
	str r4,[r11]


	ldr r11,=osTimer_OIER
	ldr r4,[r11]
	orr r4,r0,r4
	str r4,[r11]

	mov r0,#0x0
	b intervalSetEnd

;///////////

intervalClear
	ldr r11,=osTimer_OIER
	mov r4,#0x0
	str r4,[r11]
	ldr r11,=osTimer_OSSR
	ldr r4,[r11]
	str r4,[r11]

	b intervalSetEnd

;///////////

intervalSetInvalid 
	nop

;//////////
	
intervalSetEnd
	ldmfd r13!,{r4,r5,r10,pc}

	END