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IO引脚输出速率问题

wei wang13
Intellectual 832 points

Other Parts Discussed in Thread: HALCOGEN

您好，我的输入晶振为16MHz，用HALCOGEN配置PLL完成后的时钟为80MHz，但是IO引脚最简单的高低电平切换频率只有2Mhz，太慢了。请问是什么原因啊？是哪里设置不正确吗？下面是IO切换的代码。

hetPORT1->DSET = (uint32)1U << 6;
hetPORT1->DCLR = (uint32)1U << 6;