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/**
* main.c
*/
#include <stdint.h>
#include <stdbool.h>
#include "driverlib/sysctl.h"
#include "inc/hw_types.h"
#include "inc/hw_memmap.h"
#include "driverlib/sysctl.h"
#include "driverlib/gpio.h"
#include "inc/hw_ints.h"
#include "driverlib/interrupt.h"
#include "driverlib/timer.h"
#include "driverlib/pin_map.h"
uint32_t ui32SysClkFreq;
#define D2 GPIO_PIN_0
#define D1 GPIO_PIN_1
int Flag=0;
float ulPeriod;
char result;
void Timer1AIntHandler(void){
unsigned long ulstatus;
ulstatus = TimerIntStatus(TIMER1_BASE, TIMER_CAPA_EVENT);
TimerIntClear(TIMER1_BASE, ulstatus);
result=TimerValueGet(TIMER1_BASE, TIMER_A);
if(result==0){
GPIOPinWrite(GPIO_PORTN_BASE, D2|D1, 3);
}
}
void main(void)
{
ui32SysClkFreq=SysCtlClockFreqSet((SYSCTL_XTAL_25MHZ |
SYSCTL_OSC_MAIN |
SYSCTL_USE_PLL |
SYSCTL_CFG_VCO_480), 120000000);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPION);//Turn on LED
GPIOPinTypeGPIOOutput(GPIO_PORTN_BASE, D2|D1);
SysCtlDelay(10);
GPIOPinConfigure(GPIO_PD2_T1CCP0);
GPIOPinTypeTimer(GPIO_PORTD_BASE,GPIO_PIN_2);
GPIOPadConfigSet(GPIO_PORTD_BASE,GPIO_PIN_2, GPIO_STRENGTH_2MA, GPIO_PIN_TYPE_STD_WPU);
TimerConfigure(TIMER1_BASE, TIMER_CFG_SPLIT_PAIR | TIMER_CFG_A_CAP_TIME_UP);
TimerControlEvent(TIMER1_BASE, TIMER_A, TIMER_EVENT_POS_EDGE);
TimerMatchSet(TIMER1_BASE, TIMER_A, 0x8FFF);
TimerIntRegister(TIMER1_BASE, TIMER_A, Timer1AIntHandler);
IntMasterEnable();
TimerIntEnable(TIMER1_BASE, TIMER_CAPA_MATCH);
IntEnable(INT_TIMER1A);
TimerEnable(TIMER1_BASE, TIMER_A);
while(1){
}
}
shuai Liu：
不知道为什么就是不对，看了一些帖子说加延时，然后我加了掩饰也是同样的效果。真的有点迷糊了
Seven Han：
回复 shuai Liu:
请参考下以下调试说明：
http://www.ti.com.cn/cn/lit/an/spma043/spma043.pdf
