锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷M051锟斤拷片锟斤拷锟斤拷时锟斤拷3锟斤拷 锟斤拷锟斤拷模式锟斤拷锟皆筹拷锟斤拷 锟缴癸拷锟芥：
#include "SmartM_M0.h"
UINT32 i =0;
/****************************************
*锟斤拷锟斤拷锟斤拷锟斤拷:TMR3Init
*锟斤拷 锟斤拷:锟斤拷
*锟斤拷 锟斤拷:锟斤拷
*锟斤拷 锟斤拷:锟斤拷时锟斤拷3锟斤拷始锟斤拷
******************************************/
VOID TMR3Init(VOID)
{
PROTECT_REG
(
/* 使锟斤拷TMR0时锟斤拷源 */
APBCLK |= TMR3_CLKEN;
/* 选锟斤拷TMR0时锟斤拷源为锟解部锟斤拷锟斤拷12MHz */
CLKSEL1 = (CLKSEL1 & (~TM3_CLK)) | TM0_12M;
/* 锟斤拷位TMR3 */
IPRSTC2 |= TMR3_RST;
IPRSTC2 &= ~TMR3_RST;
/* 选锟斤拷TMR3锟侥癸拷锟斤拷模式为锟斤拷锟斤拷模式*/
TCSR3 &= ~TMR_MODE;
TCSR3 |= MODE_PERIOD;
/* 锟斤拷锟斤拷锟斤拷锟� = (Period of timer clock input) * (8-bit Prescale + 1) * (24-bit TCMP)*/
/* 锟斤拷锟斤拷锟斤拷锟� = (1/12MHz) * (0 + 1) * (12000*500)=500ms (0.5S)*/
TCSR3 = TCSR3 & 0xFFFFFF01; // 锟斤拷锟斤拷预锟斤拷频值 [0~255]
TCMPR3 = 12000*500; // 锟斤拷锟矫比斤拷值 [0~16777215]
TCSR3 |= TMR_IE; //使锟斤拷TMR0锟叫讹拷
NVIC_ISER |= TMR3_INT;
TCSR3 |= CRST; //锟斤拷位TMR0锟斤拷锟斤拷锟斤拷
TCSR3 |= CEN; //使锟斤拷TMR0
)
}
/****************************************
*锟斤拷锟斤拷锟斤拷锟斤拷:main
*锟斤拷 锟斤拷:锟斤拷
*锟斤拷 锟斤拷:锟斤拷
*锟斤拷 锟斤拷:锟斤拷锟斤拷锟斤拷锟斤拷
******************************************/
INT32 main(VOID)
{
PROTECT_REG //ISP锟斤拷锟斤拷时锟斤拷锟斤拷FLASH锟芥储锟斤拷
(
PWRCON |= XTL12M_EN; //默锟斤拷时锟斤拷源为锟解部锟斤拷锟斤拷
while((CLKSTATUS & XTL12M_STB) == 0); //锟饺达拷12MHz时锟斤拷锟饺讹拷
CLKSEL0 = (CLKSEL0 & (~HCLK)) | HCLK_12M; //锟斤拷锟斤拷锟解部锟斤拷锟斤拷为系统时锟斤拷
P2_PMD = 0x5555; //P2锟斤拷锟斤拷锟斤拷为锟斤拷锟侥Ｊ�
P2_DOUT= 0x00; //P2锟斤拷锟斤拷锟斤拷偷锟狡�
)
TMR3Init();
while(1)
{
if(i > 7)
{
i = 0;
}
}
}
/****************************************
*锟斤拷锟斤拷锟斤拷锟斤拷:TMR3_IRQHandler
*锟斤拷 锟斤拷:锟斤拷
*锟斤拷 锟斤拷:锟斤拷
*锟斤拷 锟斤拷:锟斤拷时锟斤拷3锟叫断凤拷锟斤拷锟斤拷
******************************************/
VOID TMR3_IRQHandler(VOID)
{
/* 锟斤拷锟絋MR3锟叫断憋拷志位 */
TISR3 |= TMR_TIF;
P2_DOUT = 1UL<<i; //P2锟斤拷锟斤拷锟斤拷锟接︼拷牡锟狡�
i++;
}