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关于使用内部时钟

lei ma2
Prodigy 92 points


我尝试使用内部时钟通过PLL 配置系统时钟为80M 但是用SysCtlClockGet 得到的数值是66M， 
 SysCtlClockSet(SYSCTL_SYSDIV_2_5 | SYSCTL_MAIN_OSC_DIS | SYSCTL_OSC_INT |SYSCTL_USE_PLL);