从手册上看配置GPIO口时,需要配置GPAGMUX和GPAMUX,通过这两个寄存器的组合,配置出引脚的各种功能,而且GPAGMUX寄存器要先于GPAMUX配置,但controlsuite的例程里gpio_setup_cpu01看,并没有配置GPAGMUX寄存器,请问这是为什么,正确的配置是哪个呢?
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从手册上看配置GPIO口时,需要配置GPAGMUX和GPAMUX,通过这两个寄存器的组合,配置出引脚的各种功能,而且GPAGMUX寄存器要先于GPAMUX配置,但controlsuite的例程里gpio_setup_cpu01看,并没有配置GPAGMUX寄存器,请问这是为什么,正确的配置是哪个呢?