Orin nano SPI1的引脚输出电平偏低

Robotics & Edge Computing Jetson & Embedded Systems Jetson Orin Nano
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1

我们采用Orin nano 核心板，jpt采用5.1.4，使用 SPI1功能，发现输出电平偏低，其中SPI1_MOSI、SPI1_SCK 、SPI1_MISO这几个信号电平在1.41V左右。没有达到1.7V以上，通信容易出错。

2

下面使我们软件关于SPI1的配置
//SPI1
hdr40-pin13 {
nvidia,pins = “spi3_sck_py0”;
nvidia,function = “spi3”;
nvidia,pin-label = “spi3_sck”;
nvidia,tristate = <TEGRA_PIN_DISABLE>;
nvidia,enable-input = <TEGRA_PIN_ENABLE>;
};
hdr40-pin18 {
nvidia,pins = “spi3_cs0_py3”;
nvidia,function = “spi3”;
nvidia,pin-label = “spi3_cs0”;
nvidia,tristate = <TEGRA_PIN_DISABLE>;
nvidia,enable-input = <TEGRA_PIN_ENABLE>;
};
hdr40-pin22 {
nvidia,pins = “spi3_miso_py1”;
nvidia,function = “spi3”;
nvidia,pin-label = “spi3_din”;
nvidia,tristate = <TEGRA_PIN_DISABLE>;
nvidia,enable-input = <TEGRA_PIN_ENABLE>;
};
hdr40-pin37 {
nvidia,pins = “spi3_mosi_py2”;
nvidia,function = “spi3”;
nvidia,pin-label = “spi3_dout”;
nvidia,tristate = <TEGRA_PIN_DISABLE>;
nvidia,enable-input = <TEGRA_PIN_ENABLE>;
};

3

请问需要如何设置引脚的输出模式，能够使引脚能够达到1.7V以上

5

It depends on the pin circuit design. You need to check the load of device to meet the requirement of 40-pin header GPIO usage doc. Jetson Nano Developer Kit 40-Pin Expansion Header GPIO Usage Considerations Applications Note

6

我们遇到的问题就是和下面的帖子类似的情况，请问有解决方式了吗

7

我们遇到的问题就是和下面的帖子类似的情况，请问有解决方式了吗

Regarding SPI MOSI/ MISO voltage levels in Jetson Nano Jetson Nano

9

Please run the jetson-io to configurate to SPI function.

11

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