詳細開發(fā)2.新唐單片機cortexm032位21numicro mini51timer wdt

議題兩組24-bit8-bit方塊操作模 寄存器映示例代18-bit方塊寄存器映示例代定時器特兩組24-bit*8-bit預分頻+*(24-bit 觸發(fā)22MRisingedge 外部011TMRx_CLK22MRisingedge 外部011TMRx_CLK01010KHz00112Mor32K000TMRx_EN(inTM0→P3.4,TM1→P3.5Mini51定時器方塊ResetReset24-bitRefreshevery-+=timeTlocks0124-bitup-0T0-Reset1Timer24-bit0 124-bit超時周期=(定時器時鐘源周期)*8-bit預分頻+1)*(24-bitTCMP)TMAX=(1/12MHz)*(28)*(224-1)≒357.9sec.TMIN=(1/12MHz)*(1+1)*(2)≒0.333usec.8-bit預分頻:1~255,設為0將關閉預分頻時鐘24bitTCMP:2~(224-01000100101224-01000100101224-ToggleTM0→P3.4,ContinuouscountingToggle01000100OneOneshot 100PeriodicPeriodic計數模

捕獲功能

24-24-bit24-bit

2.1.開始計數條件匹配，開始計

態(tài)態(tài)TCSR8-bit01EXEN=24-24-bit3.數捕獲模式Reset24-bit0101EXEN=定時器寄存TMR_BA=----R-R--注意1:注意1:0x0或者0x1到TCMPRx.注意2TCMPRx注意3:內部24-bit定時器上數值將timerup-countervaluewillbelatchedTDRineveryfourtimerclocks.注意4:1清除中斷標志定時器示打開timer0，并安裝中斷回調函數，從0到10計數調用定時器延定時器示例代碼，使用驅MAINvolatileuint32_t t=20;int32_tmain(void){ DrvSYS_SelectIPClockSource(E_SYS_TMR0_CLKSRC,0);DrvTIMER_Open(E_TMR0,2,

tick=0.5secDrvTIMER_SetTimerEvent(E_TMR0,2,(TIMER_CALLBACK)TMR0_Callback,/*等待定時器回調函數調用10次 t</*4DrvTIMER_Delay(E_TMR0,/*TIMER0}

4ticks=2sec

ticks=1secvoid{}定時器示例代碼MAINint32_tmain{//選擇22Mhz振蕩器作為時CLK->APBCLK_BITS.TMR0_ENTIMER0-

22Mhz// TIMER0- TIMER0->CMPR=定時器示例代碼//24bit上數定時TIMER0-}void{TIMER0->ISR_BITS.TIF}WDT特18-bitWDT中WDT復WDT

WDT時鐘WDT_S 10KHz HCLK/2048 12M

WDT方塊數

18-bitWDT

看門狗中::4::40從掉電模式喚醒.WDT間隔選中斷超復位超超時復位間超時復位間超時復位間(24+1024)32.5104(26+1024)90.6734108.8(28+40128(210+170.6764204.8(212+1024)426.67160512(214+1.45544(216+5.5520806.656(218+1024)21.938224dGCR_BA+0x100876543210WDT示WDT打開WDT并安裝中斷回調函數WDT流程一WDT示例代碼，使用驅MAINint32_tmain{DrvWDT_Open(E_WDT_LEVEL4);//Level4→212WDT_CLKDrvWDT_Ioctl(E_WDT_IOC_ENABLE_INT,0);DrvWDT_Ioctl(E_WDT_IOC_START_TIMER,}

10KHzvoid{DrvWDT_Ioctl(E_WDT_IOC_RESET_TIMER,}WDT示例代碼MAINint32_tmain{//選擇10Khz作為看門狗的時CLK->CLKSEL1_BITS.WDT_SCLK->APBC