超声波测距 定时器TimerValueGet()问题

/*
 * main.c
 */
#include <stdio.h>
#include <stdint.h>
#include <stdbool.h>
#include "driverlib/gpio.h"
#include "driverlib/sysctl.h"
#include "inc/hw_memmap.h"
#include "inc/hw_ints.h"
#include "LCDDriver.h"
#include "inc/hw_gpio.h"
#include "driverlib/timer.h"
#include "inc/hw_types.h"
#include "driverlib/debug.h"
#include "driverlib/fpu.h"
#include "driverlib/interrupt.h"
#include "driverlib/pin_map.h"
#include "driverlib/rom.h"

//uint32_t g_ui32Flags;
uint32_t g_ledFlag = 0;
uint32_t g_uartFlag = 0;
uint32_t ui32Period;
uint32_t g_showFlag = 0;
uint32_t readValue = 0;
uint32_t g_readFlag = 0;

void timer0Config();

void timer0Config()
{

	SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER0);
	TimerConfigure(TIMER0_BASE, TIMER_CFG_PERIODIC);
	ui32Period = (SysCtlClockGet());
	TimerLoadSet(TIMER0_BASE, TIMER_A, ui32Period -1);
	IntEnable(INT_TIMER0A);
	TimerIntEnable(TIMER0_BASE, TIMER_TIMA_TIMEOUT);
	IntMasterEnable();
	TimerEnable(TIMER0_BASE, TIMER_A);
}
void timer1Config()
{
	SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER1);
	TimerConfigure(TIMER1_BASE, TIMER_CFG_PERIODIC);
	ui32Period = (SysCtlClockGet()/10);
	TimerLoadSet(TIMER1_BASE, TIMER_A, ui32Period -1);
	IntEnable(INT_TIMER1A);
	TimerIntEnable(TIMER1_BASE, TIMER_TIMA_TIMEOUT);
	IntMasterEnable();
	TimerEnable(TIMER1_BASE, TIMER_A);
}

void PortFIntHandler(void)
{
	//清除中断标志
	GPIOIntClear(GPIO_PORTF_BASE, GPIO_PIN_4);
	//PF2低电平 关闭蓝色LED
	//g_uartFlag = 1;

	if(g_showFlag == 0)
	{


		g_showFlag = 1;
	}
	else if(g_showFlag == 1)
	{
		g_showFlag = 0;
		g_readFlag = 1;

	}

}

void
Timer0IntHandler(void)
{
	// Clear the timer interrupt
		TimerIntClear(TIMER0_BASE, TIMER_TIMA_TIMEOUT);
		// Read the current state of the GPIO pin and
		// write back the opposite state
		if(g_uartFlag == 0)
		{
			GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_3, 0);
			GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_2, GPIO_PIN_2);
			g_uartFlag = 1;
		}
		else if(g_uartFlag == 1)
		{
			GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_2, 0);
			GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_1, GPIO_PIN_1);
			g_uartFlag = 2;
		}
		else if(g_uartFlag == 2)
		{
			GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_1, 0);
			GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_3, GPIO_PIN_3);
			g_uartFlag = 0;
		}

}

void
Timer1IntHandler(void)
{
	// Clear the timer interrupt
	TimerIntClear(TIMER1_BASE, TIMER_TIMA_TIMEOUT);
		// Read the current state of the GPIO pin and
	GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_0, 0x01);
	SysCtlDelay(160/3); //延时10微秒
	GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_0, 0x00);
	//LCD_Draw_String("OK123", 2, 1, false);
}


int main(void)
{
	char buf[10] = {0};

	//配置时钟
	SysCtlClockSet(SYSCTL_SYSDIV_1 | SYSCTL_USE_OSC | SYSCTL_OSC_MAIN |
					SYSCTL_XTAL_16MHZ);
	//	使能外设 所有外设操作前都要使能，否则会跳转到FaultISR()死循环
	SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);

	ui32Period = (SysCtlClockGet());

	//GPIO注册中断

	GPIOIntRegister(GPIO_PORTF_BASE, PortFIntHandler);
	//PF4作为中断输入源对应LaunchPad的按键1 SW1
	GPIOPinTypeGPIOInput(GPIO_PORTF_BASE, GPIO_PIN_4);
	//PF2配置为输出模式 对应LaunchPad的蓝色LED
	GPIOPinTypeGPIOOutput(GPIO_PORTF_BASE, GPIO_PIN_0 | GPIO_PIN_3 | GPIO_PIN_2 | GPIO_PIN_1);
	//配置PF4为上拉电阻，输出电流能力2mA
	GPIOPadConfigSet(GPIO_PORTF_BASE,GPIO_PIN_4,GPIO_STRENGTH_2MA,GPIO_PIN_TYPE_STD_WPU);
	//终端类型为下降沿触发
	GPIOIntTypeSet(GPIO_PORTF_BASE, GPIO_PIN_4 , GPIO_BOTH_EDGES);
	//使能PF4中断
	GPIOIntEnable(GPIO_PORTF_BASE, GPIO_PIN_4);
	//全局中断
	IntMasterEnable();
	timer0Config();
	timer1Config();
	//PF2高电平 点亮蓝色LED
	//GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_3,GPIO_PIN_3);




	//timer配置


	LCD_Enable();						// 使能LCD
	LCD_Init();							// 初始化LCD
	LCD_ScreenClr();					// 清屏

	//sprintf(buf, "%d", ui32Period);
	while(1)
	{

		if(g_showFlag == 0)
		{
			LCD_Draw_String("in", 4, 1, false);
		}
		else
		{
			LCD_Draw_String("out", 4, 1, false);
		}


		if(g_readFlag == 1)
		{
			g_readFlag = 0;
			LCD_Draw_String("ab", 3, 1, false);
			readValue = TimerValueGet(TIMER0_BASE, TIMER_A);

			//sprintf(buf, "%d", readValue);
		}

		LCD_Draw_String("test", 1, 1, false);


		//LCD_Draw_String(buf, 3, 3, false);

	}
}

大概看了看你定时器的初始化，估计是你这里出错了。建议单独测试定时器部分。另外，应该是先初始化定时器，再开全局中断了吧。定时器中不要有延时。