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2024-06-28 c0e8109574985a9ed05b4153767e56fe4db2a5f5 
 RK3568_Android_SDK开发文档/RK3568_Android_SDK开发文档.md


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## 3.9 AIN 电流电压测试




### 3.9.1 硬件原理图说明




![image-20240530141259975](./images/image-20240530141259975.png)




![image-20240530135607369](./images/image-20240530135607369.png)




### 3.9.2 AIN 电流测试




首先我们需要将ADC采样程序烧录到开发板上的单片机中




连接J6000 TTL下载调试串口 Debug_RXD_CN连接串口的TXD    Debug_TXD_CN连接串口的RXD  GND相连








![image-20240530140205871](./images/image-20240530140205871.png)








**打开FlyMcu.exe烧录工具，选择准备好的.hex 的单片机程序**




![image-20240530140731254](./images/image-20240530140731254.png)








**点击开始编程后就开始烧录程序，烧录成功如下图，并且可以看到单片机的LED灯在闪烁绿光**




![image-20240530140856899](./images/image-20240530140856899.png)








单片机程序烧录好后，我们需要使能RK3568的UART6，根据原理图可以看到，RK3568和MCU通信串口为UART6，所以需要在设备树中设置UART6设备节点




打开`~/rk3568/sdkv1.4.0_linux5.10/kernel/arch/arm64/boot/dts/rockchip/rk3568-evb1-ddr4-v10-linux.dts`




加入URAT6节点




```


&uart6{


        dma-names = "tx", "rx";


        pinctrl-names = "default";


        pinctrl-0 = <&uart6m1_xfer>;


        status = "okay";


};


```








重新编译设备树后烧录到开发板中启动开发板，在/dev下看看是否有ttyS6




![image-20240530142151791](./images/image-20240530142151791.png)








![image-20240530141055521](./images/image-20240530141055521.png)








按照上图连接电路后，用XCOM软件打开单片机的调试串口，配置如下图所示




![image-20240530141147705](./images/image-20240530141147705.png)








在RK3568上运行comport程序，此程序可以配置串口的波特率，停止位，数据位，奇偶校验以及指定使用哪个串口设备




源代码在[framwork.git - Gitblit (iot-yun.club)](http://main.iot-yun.club:8088/tree/framwork.git/master/booster)




但是这个代码需要做一定的修改，因为这个程序只能让串口输出字符串数据，但是我们在测试中需要发送十六进制数据给单片机。








此时就需要了解ADC串口协议，RK3568发送读指令给MCU，MCU会响应RK3568返回ADC采样数据




![image-20240530142838339](./images/image-20240530142838339.png)




示例如下：




示例：




1、读第0通道电压：




AA 55 02 00 30 8C      //CRC：0x8C30




AA 55 02 00 EE 0D 99 C0   //0D EE -> 3566mv, CRC:0x0C99




2、读第1路通道电压：




AA 55 02 01 F1 4C




AA 55 02 01 06 00 47 C5    //00 06 -> 6mv 




3、读第2路通道电压：




AA 55 02 02 B1 4D




AA 55 02 02 06 00 B7 C5 //6mv




4、读第3路通道电压：




AA 55 02 03 70 8D




AA 55 02 03 06 00 E6 05 //6mv




5、读第0路电流




AA 55 01 00 30 7C 




AA 55 01 00 95 01 BB 71 //01 95 -> 405 单位0.01mA,即4.05mA， CRC:0x71BB




6、读第1路电流




AA 55 01 01 F1 BC




AA 55 01 01 95 01 EA B1




7、读第2路电流




AA 55 01 02 B1 BD




AA 55 01 02 95 01 1A B1




8、读第3路电流




AA 55 01 03 70 7D




AA 55 01 03 95 01 4B 71








以下AIN电流测试以测试第0路电流为例




在RK3568上输入`./comport -d /dev/ttyS6 -b 115200 -s 8N1N -x`




在XCOM上可以看到MCU的调试信息，旋转电位器旋钮至最左或最右分别测量最小电流和最大电流，量程约为1.22mA~22.79mA(测试其他三路电流时最小电流约为0.006mA)








![8e38061a45cded5d0965e8381a90f9e](./images/8e38061a45cded5d0965e8381a90f9e.png)




### 3.9.3 AIN 电压测试




准备工作和AIN电流测试一样，不再赘述




![image-20240530144317972](./images/image-20240530144317972.png)




运行comport程序让rk3568输出读取电压的指令给mcu




同样在XCOM上也能看到MCU的采样调试信息，旋转电位器旋钮至最左或最右分别测量最小电流和最大电流，量程约为0.017mV~5.882mV




![image-20240530143956558](./images/image-20240530143956558.png)








## 3.10 MIPI DSI 测试




### 3.10.1 独立TP的屏幕




在rk3568-evb1-ddr4-v10.dtsi中确认一下节点是否打开




```


&dsi0 {


    status = "okay";


};




&dsi0_in_vp1 {


    status = "okay";


};




&dsi1_panel {


    power-supply = <&vcc3v3_lcd1_n>;


};




&route_dsi0 {


    status = "okay";


    connect = <&vp1_out_dsi0>;


};


```




在rk3568-evb.dtsi中设置屏参，这里的屏参需要根据实际的屏幕手册里给的数据计算得出，不同屏幕参数大不相同




```


disp_timings0: display-timings {


   native-mode = <&dsi0_timing0>;


   dsi0_timing0: timing0 {


      clock-frequency = <149600000>;


      hactive = <1920>;


      vactive = <1080>;


      hfront-porch = <48>;


      hsync-len = <32>;


      hback-porch = <147>;


      vfront-porch = <3>;


      vsync-len = <6>;


      vback-porch = <51>;


      hsync-active = <0>;


      vsync-active = <0>;


      de-active = <0>;


      pixelclk-active = <1>;


   };


};




```








**接线如下图所示**




![image-20240628183823118](./images/image-20240628183823118.png)




![image-20240628183901996](./images/image-20240628183901996.png)








### 3.10.2 自带TP的屏幕




在rk3568-evb1-ddr4-v10.dtsi中确认一下节点是否打开




```


&dsi0 {


    status = "okay";


};




&dsi0_in_vp1 {


    status = "okay";


};




&dsi1_panel {


    power-supply = <&vcc3v3_lcd1_n>;


};




&route_dsi0 {


    status = "okay";


    connect = <&vp1_out_dsi0>;


};


```




在rk3568-evb.dtsi中设置屏参，这里的屏参需要根据实际的屏幕手册里给的数据计算得出，不同屏幕参数大不相同




```


disp_timings0: display-timings {


   native-mode = <&dsi0_timing0>;


   dsi0_timing0: timing0 {


      clock-frequency = <149600000>;


      hactive = <1920>;


      vactive = <1080>;


      hfront-porch = <48>;


      hsync-len = <32>;


      hback-porch = <147>;


      vfront-porch = <3>;


      vsync-len = <6>;


      vback-porch = <51>;


      hsync-active = <0>;


      vsync-active = <0>;


      de-active = <0>;


      pixelclk-active = <1>;


   };


};




```








**接线如下图所示**




![image-20240628182052917](./images/image-20240628182052917.png)




![image-20240628182336621](./images/image-20240628182336621.png)




## 3.11 LVDS 测试




首先在rk3568-evb1-ddr4-v10.dts 中添加lvds相关节点




```




/ {


        panel-lvds {


                compatible = "simple-panel";


                power-supply = <&vcc3v3_lcd0_n>;


                enable-delay-ms = <20>;


                prepare-delay-ms = <20>;


                unprepare-delay-ms = <20>;


                disable-delay-ms = <20>;


                bus-format = <MEDIA_BUS_FMT_RGB888_1X7X4_SPWG>;


                width-mm = <217>;


                height-mm = <136>;




                display-timings {


                        native-mode = <&timing0>;


                        timing0: timing0 {


                                clock-frequency = <73400000>;


                                hactive = <1280>;


                                vactive = <800>;


                                hback-porch = <40>;


                                hfront-porch = <80>;


                                vback-porch = <9>;


                                vfront-porch = <9>;


                                hsync-len = <40>;


                                vsync-len = <5>;


                                hsync-active = <0>;


                                vsync-active = <0>;


                                de-active = <0>;


                                pixelclk-active = <0>;


                        };


                };




                ports {


                        #address-cells = <1>;


                        #size-cells = <0>;


                        port@0 {


                                reg = <0>;


                                panel_in_lvds: endpoint {


                                        remote-endpoint = <&lvds_out_panel>;


                                };


                        };


                };


        };




};




&vp0 {


        cursor-win-id = <ROCKCHIP_VOP2_CLUSTER0>;


};




&vp1 {


        cursor-win-id = <ROCKCHIP_VOP2_CLUSTER1>;


};




&lvds {


        status = "okay";


        ports {


                port@1 {


                        reg = <1>;


                        lvds_out_panel: endpoint {


                                remote-endpoint = <&panel_in_lvds>;


                        };


                };


        };


};




&lvds_in_vp1 {


        status = "okay";


};




&route_lvds{


        status = "okay";


        connect = <&vp1_out_lvds>;


};




```








**因为这个lvds屏幕不支持更改屏幕亮度，所以他不是通过pwm来控制背光的，而是通过gpio控制，只能保证亮屏和灭屏，所以只需要控制gpio电平即可实现**




![image-20240628184602191](./images/image-20240628184602191.png)




第一种方法  在rk3568-evb1-ddr4-v10.dtsi更改vcc3v3_lcd0_n




```


&vcc3v3_lcd0_n {


    gpio = <&gpio0 RK_PC7 GPIO_ACTIVE_LOW>;


//  enable-active-high;


};


```




第二种方法  更改panel-lvds节点




```


panel-lvds {


                compatible = "simple-panel";


//              power-supply = <&vcc3v3_lcd0_n>;


             enable-gpios = <&gpio0 RK_PC7 GPIO_ACTIVE_LOW>;


             enable-delay-ms = <20>;


                prepare-delay-ms = <20>;


                unprepare-delay-ms = <20>;


                disable-delay-ms = <20>;


                bus-format = <MEDIA_BUS_FMT_RGB888_1X7X4_SPWG>;


                width-mm = <217>;


                height-mm = <136>;


                ......


};


```








最后由于mipi dsi也用到了vp1这个端口所以禁掉mipi dsi相关节点，mipi_dsi相关节点参考3.10.1，提到的节点全部禁掉就可以了








**接线如下图所示**




![image-20240628185147524](./images/image-20240628185147524.png)




![image-20240628185201219](./images/image-20240628185201219.png)








# 4.  ADB调试工具




1. 下载解压platform-tools-latest-windows.zip