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关于引脚配置



比如这段代码:GPIOPinTypeUART(GPIO_PORTA_BASE, GPIO_PIN_0 | GPIO_PIN_1),这个是配置UART引脚,这个地方使用的是A引脚,但是后面的pin_0和pin_1指的是PA1和PA2吗,但是板子上好像没有这两个引脚,能否解释下这是什么意思

谢谢