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TM4C1294 GPIO output输出电流设置问题



RT~配置了GPIOPadConfigSet(GPIO_PORTC_BASE, GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6, GPIO_STRENGTH_8MA, GPIO_PIN_TYPE_STD);

PC4接了1k的下拉电阻,现在发现输出高电平时,电压只有大约2.8V,想提高一些输出电压,但不想更改下拉电阻,请问有什么配置的方法吗?

我试过了把GPIO_STRENGTH_8MA修改为12MA,没什么效果,改成GPIO_STRENGTH_2MA高电平也没有降低多少...不知道是不是配置的错误...