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我使用ZU47DR的AXI IIC去控制TCA9535,我的blockdesign如下:
我使用petalinux2023.1制作镜像文件,设备树配置如下:
&axi_i2c1 {
clock-frequency = <400000>;
status = "okay";
tca9535@20 {
status = "okay";
compatible = "ti,tca9535";
reg = <0x20>;
};
};
我能够在linux 系统中找到设备文件,和驱动
但是我通过i2cdetect检测不到tca9535,我通过应用层程序去读写tca9535寄存器也不能够成功,谁能帮助我一下,谢谢
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