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TM4C123x使用知识点2----使能外设后进入FaultISR的处理办法

TM4C123x使能外设后,需要延时5个时钟周期才可以的,最好的办法是进行时钟开启的判断,代码如下所示:

SysCtlPeripheralEnable(SYSCTL_PERIPH_I2C2);

while(!(SysCtlPeripheralReady(SYSCTL_PERIPH_I2C2)));