[参考译文] TM4C1294NCPDT：在 Tiva C 中测量时间

https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1586627/tm4c1294ncpdt-measure-time-in-tiva-c

器件型号： TM4C1294NCPDT

您好：

我必须测量以 usec 为单位的时间：

您好：

在下面的代码中、我应该如何将时钟转换为 usec？

时钟似乎未运行。 after=before。  

谢谢您、

Zvi Vered

int Diff;

ui32SysClock = SysCtlClockFreqSet (SYSCTL_XTAL_25MHZ | 
                                                          SYSCTL_OSC_MAIN | 
                                                          SYSCTL_PLL | 
                                                          SYSCTL_CFG_VCO_480), 120000000);
//ui32SysClock  = 120000000;

Before = SysCtlClockGet ();
SysCtlDelay (40);
After = SysCtlClockGet ();

Diff = After - Before;