lark board 操作PIO

编程入门行业动态更新时间:2024-10-10 11:21:30

lark board <a href=https://www.elefans.com/category/jswz/34/1770947.html style= 操作PIO"/>

1.在rbf中要添加这个PIO

2.修改DTS

pio_1: gpio@0x1000000a0 {

compatible = "altr,pio-15.1", "altr,pio-1.0";

reg = <0x000000a0 0x00000010>;

altr,gpio-bank-width = <1>;

resetvalue = <0>;

#gpio-cells = <2>;

gpio-controller;

}; //end gpio@0x1000000a0 (pio_1)

3.应用程序中mmap映射

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lark board 操作PIO

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操作 lark board PIO

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