我的TimerB好像没有计时，求大神指导，用串口观察当前计时值一直是0

本来打算在中断中，使能TimerB的，但是发现没法启动计时，不知道怎么回事，求大神指导，还有获得当前计时值是用

uint32_t VALUE=TimerValueGet(TIMER0_BASE, TIMER_B);吗？

以下是完整程序

#include<stdint.h>
#include <stdbool.h>
#include "driverlib/gpio.h"
#include "driverlib/interrupt.h"
#include "driverlib/sysctl.h"
#include "driverlib/timer.h"
#include "driverlib/uart.h"
#include "driverlib/pin_map.h"
#include "inc/hw_memmap.h"
#include "inc/hw_ints.h"
#include "inc/hw_gpio.h"
#include "utils/uartstdio.h"

uint32_t GPIOE_INT(void)
{
uint32_t value=0;
unsigned long ulStatus;
// 读取中断状态
ulStatus = GPIOIntStatus(GPIO_PORTE_BASE, true);
//进入中断指示灯亮
GPIOPinWrite(GPIO_PORTF_BASE,GPIO_PIN_1,GPIO_PIN_1);
// 清除中断状态
GPIOIntClear(GPIO_PORTE_BASE, ulStatus);
if (ulStatus & GPIO_PIN_1)
{
TimerConfigure(TIMER0_BASE, TIMER_CFG_SPLIT_PAIR | TIMER_CFG_B_ONE_SHOT );
TimerLoadSet(TIMER0_BASE, TIMER_B, 0);
TimerEnable(TIMER0_BASE, TIMER_B);
//SysCtlDelay(1000 * (SysCtlClockGet() / 3000));
}
if (ulStatus & GPIO_PIN_2)
{
TimerDisable(TIMER0_BASE, TIMER_B);
value=TimerValueGet(TIMER0_BASE, TIMER_B);
UARTprintf("LASTTIME:%4u\n",value);
}
return value;

}
void InitConsole(void)
{
// Enable GPIO port C which is used for UART1 pins.
// TODO: change this to whichever GPIO port you are using.
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOC);
// Configure the pin muxing for UART1 functions on port C4 and C5.
// This step is not necessary if your part does not support pin muxing.
// TODO: change this to select the port/pin you are using.
GPIOPinConfigure(GPIO_PC4_U1RX);
GPIOPinConfigure(GPIO_PC5_U1TX);
// Enable UART1 so that we can configure the clock.
SysCtlPeripheralEnable(SYSCTL_PERIPH_UART1);
// Use the internal 16MHz oscillator as the UART clock source.
UARTClockSourceSet(UART1_BASE, UART_CLOCK_PIOSC);
// Select the alternate (UART) function for these pins.
// TODO: change this to select the port/pin you are using.
GPIOPinTypeUART(GPIO_PORTC_BASE, GPIO_PIN_4 | GPIO_PIN_5);
// Initialize the UART for console I/O.
UARTStdioConfig(1, 115200, 16000000);
}

/*
* main.c
*/
void main(void) {
SysCtlClockSet(SYSCTL_SYSDIV_1 | SYSCTL_USE_OSC | SYSCTL_OSC_MAIN| SYSCTL_XTAL_16MHZ);

SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE);

SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);

SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER0);

GPIODirModeSet(GPIO_PORTE_BASE, GPIO_PIN_1|GPIO_PIN_2 , GPIO_DIR_MODE_IN);//声音接收中断PE1,PE2

GPIOPadConfigSet(GPIO_PORTE_BASE, GPIO_PIN_1|GPIO_PIN_2, GPIO_STRENGTH_2MA,GPIO_PIN_TYPE_STD_WPU);//上拉输入

GPIOPinTypeGPIOOutput(GPIO_PORTF_BASE,GPIO_PIN_1);//中断指示，进入中断灯亮

GPIOIntTypeSet(GPIO_PORTE_BASE, GPIO_PIN_1|GPIO_PIN_2, GPIO_LOW_LEVEL);//低电平产生中断

GPIOIntEnable(GPIO_PORTE_BASE, GPIO_PIN_1|GPIO_PIN_2);

InitConsole(); //初始化串口1

TimerConfigure(TIMER0_BASE, TIMER_CFG_SPLIT_PAIR | TIMER_CFG_B_ONE_SHOT );

TimerLoadSet(TIMER0_BASE, TIMER_B, 0);

IntEnable(INT_GPIOE_TM4C123);

IntMasterEnable();

GPIOIntClear(GPIO_PORTE_BASE, GPIO_PIN_1|GPIO_PIN_2);

while(1)
{
GPIOPinWrite(GPIO_PORTF_BASE,GPIO_PIN_1,0);
uint32_t VALUE=TimerValueGet(TIMER0_BASE, TIMER_B);
UARTprintf("TIME:%4u\n",VALUE);
}

}

急求

TimerLoadSet(TIMER0_BASE, TIMER_B, 0);

我把这句注释掉了，程序就可以计数了，有大神指导是为什么吗？