sd fsl k60分章閱讀krev6 ch40第40周期中斷定時器

位寬PIT_MCR域31-21001地址：PIT_LDVAL0——4003_7000h基址+100h偏移=4003_7100hPIT_LDVAL1——4003_7000h基址+110h偏移=4003_7110hPIT_LDVAL2——4003_7000h基址+120h偏移=4003_7120h域31-地址：PIT_CVAL0——4003_7000h基址+104h偏移=4003_7104hPIT_CVAL1——4003_7000h基址+114h偏移=4003_7114hPIT_CVAL2——4003_7000h基址+124h偏移=4003_7124h域31-地址：PIT_TCTRL0——4003_7000h基址+108h偏移=4003_7108hPIT_TCTRL1——4003_7000h基址+118h偏移=4003_7118hPIT_TCTRL2——4003_7000h基址+128h偏移=4003_7128hPIT_TCTRL3——4003_7000h基址+138h偏移=4003_7138hPIT_TCTRLn域31-1發(fā)生，相關(guān)的TIF標(biāo)志必須先清除。0來自定時器n1不論TIF00定時器n1定時器n地址：PIT_TFLG0——4003_7000h基址+10Ch偏移=4003_710ChPIT_TFLG1——4003_7000h基址+11Ch偏移=4003_711ChPIT_TFLG2——4003_7000h基址+12Ch偏移PIT_TFLG3——4003_7000h基址+13Ch偏移域31-0TIF在定時器周期結(jié)束時置1。只有在寫入1時該標(biāo)志才被清除。寫00時，將產(chǎn)生一個觸發(fā)脈沖并且置中斷標(biāo)志。所有的中斷可以開啟或屏蔽（TCTRLTIE位。只有TEN位開啟定時器來重啟計數(shù)周期。（40-23）40-2340-24LDVAL寄存器寫入新值而不用重啟定時器來改變計數(shù)周期。

40-25PITFRZ位將會凍結(jié)。這是為了幫助定時器中斷可以通過設(shè)置TIE位來使能。定時器中斷標(biāo)志(TIF)在相關(guān)的定定時器1每隔5.12ms產(chǎn)生一次中斷鐘頻率相當(dāng)于每個始終周期為20ns。定時器1需要每隔5.12ms/20ns=256000330ms/20ns=1500000個周期。LDVAL0x0003E7FFLDAL位TIE保持0來開啟。//turnonPIT//TimerPIT_LDVAL1=0x0003E7FF;//setuptimer1for256000cyclesPIT_TCTRL1=TIE;//enableTimer1interruptsPIT_TCTRL1|=TEN;//startTimer//TimerPIT_LDVAL3=0x0016E35F;//setuptimer3for1500000cyclesPIT_TCTRL3|=TEN;//startTimer30x0003E7FFLDAL3TCTRL1TIE1TCTRL1TEN133TCTRL3寄存器的TEN1，TIE0來開啟。//turnonPITPIT_MCR=0x00;//TimerPIT_LDVAL1=0x0003E7FF;//setuptimer1for256000cyclesPIT_TCTRL1=TIE;//enableTimer1interruptsPIT_TCTRL1|=TEN;//startTimer//TimerPIT_LDVA