龙迅LT8711HE DP/Type-C输入转HDMI2.0

**龙迅LT8711HE DP/Type-C输入转HDMI2.0**

**概述**

龙迅LT8711HE是一款高性能的DP/Type-C输入转HDMI2.0转换器，支持最高3840x2160@60Hz的解析度输出。它能够将DP或Type-C接口的信号转换为HDMI2.0信号，使得用户可以轻松地连接电脑、手机等设备到HDMI显示器上。

**硬件特性**

* 支持DP和Type-C输入* 支持HDMI2.0输出* 最高3840x2160@60Hz的解析度输出* 支持4K@30Hz、1080P@120Hz等多种解析度输出* 支持HDR10、Dolby Vision等高动态范围视频格式输出* 支持音频输出，支持PCM、AC-3等多种音频格式**软件特性**

* 支持Windows10、macOS Catalina等操作系统* 支持Linux内核4.14以上版本* 支持USB驱动程序，支持自动安装和更新* 支持HDMI EDID信息读取和写入功能**使用示例**

### **DP输入转HDMI输出**

c// DP输入转HDMI输出的示例代码#include <stdio.h>
#include <stdlib.h>

int main() {
 // 初始化DP输入和HDMI输出接口 int dp_fd = open("/dev/dp", O_RDWR);
 if (dp_fd < 0) {
 printf("Failed to open DP input interface
");
 return -1;
 }

 int hdmi_fd = open("/dev/hdmi", O_RDWR);
 if (hdmi_fd < 0) {
 printf("Failed to open HDMI output interface
");
 close(dp_fd);
 return -1;
 }

 // 配置DP输入接口 struct dp_config config;
 memset(&config,0, sizeof(config));
 config.width =3840;
 config.height =2160;
 config.refresh_rate =60;

 if (ioctl(dp_fd, DPIOC_CONFIG, &config) < 0) {
 printf("Failed to configure DP input interface
");
 close(hdmi_fd);
 return -1;
 }

 // 配置HDMI输出接口 struct hdmi_config hdmi_config;
 memset(&hdmi_config,0, sizeof(hdmi_config));
 hdmi_config.width =3840;
 hdmi_config.height =2160;
 hdmi_config.refresh_rate =60;

 if (ioctl(hdmi_fd, HDMIIOC_CONFIG, &hdmi_config) < 0) {
 printf("Failed to configure HDMI output interface
");
 close(dp_fd);
 return -1;
 }

 // 开始转换 while (1) {
 //读取DP输入信号 struct dp_frame frame;
 if (read(dp_fd, &frame, sizeof(frame)) < 0) {
 printf("Failed to read DP input signal
");
 break;
 }

 // 转换为HDMI输出信号 struct hdmi_frame hdmi_frame;
 memset(&hdmi_frame,0, sizeof(hdmi_frame));
 hdmi_frame.width = frame.width;
 hdmi_frame.height = frame.height;
 hdmi_frame.refresh_rate = frame.refresh_rate;

 // 写入HDMI输出接口 if (write(hdmi_fd, &hdmi_frame, sizeof(hdmi_frame)) < 0) {
 printf("Failed to write HDMI output signal
");
 break;
 }
 }

 close(dp_fd);
 close(hdmi_fd);

 return0;
}

c// Type-C输入转HDMI输出的示例代码#include <stdio.h>
#include <stdlib.h>

int main() {
 // 初始化Type-C输入和HDMI输出接口 int type_c_fd = open("/dev/type-c", O_RDWR);
 if (type_c_fd < 0) {
 printf("Failed to open Type-C input interface
");
 return -1;
 }

 int hdmi_fd = open("/dev/hdmi", O_RDWR);
 if (hdmi_fd < 0) {
 printf("Failed to open HDMI output interface
");
 close(type_c_fd);
 return -1;
 }

 // 配置Type-C输入接口 struct type_c_config config;
 memset(&config,0, sizeof(config));
 config.width =3840;
 config.height =2160;
 config.refresh_rate =60;

 if (ioctl(type_c_fd, TYPECIOC_CONFIG, &config) < 0) {
 printf("Failed to configure Type-C input interface
");
 close(hdmi_fd);
 return -1;
 }

 // 配置HDMI输出接口 struct hdmi_config hdmi_config;
 memset(&hdmi_config,0, sizeof(hdmi_config));
 hdmi_config.width =3840;
 hdmi_config.height =2160;
 hdmi_config.refresh_rate =60;

 if (ioctl(hdmi_fd, HDMIIOC_CONFIG, &hdmi_config) < 0) {
 printf("Failed to configure HDMI output interface
");
 close(type_c_fd);
 return -1;
 }

 // 开始转换 while (1) {
 //读取Type-C输入信号 struct type_c_frame frame;
 if (read(type_c_fd, &frame, sizeof(frame)) < 0) {
 printf("Failed to read Type-C input signal
");
 break;
 }

 // 转换为HDMI输出信号 struct hdmi_frame hdmi_frame;
 memset(&hdmi_frame,0, sizeof(hdmi_frame));
 hdmi_frame.width = frame.width;
 hdmi_frame.height = frame.height;
 hdmi_frame.refresh_rate = frame.refresh_rate;

 // 写入HDMI输出接口 if (write(hdmi_fd, &hdmi_frame, sizeof(hdmi_frame)) < 0) {
 printf("Failed to write HDMI output signal
");
 break;
 }
 }

 close(type_c_fd);
 close(hdmi_fd);

 return0;
}