Posts made by george

@spartan50416 Sorry, to clarify, the method of making our startup disk is the same as the raspberry pie, not the firmware. Of course, the main difference is in the kernel part. If you are interested in porting the raspberry pie file system to CP4, there is no problem. You can use the PWM interface to adjust the fan speed. Our DTS configuration already supports this. The 2X20 expansion port has multiple PWM interfaces.

@spartan50416 I think there is no problem implementing the functionality in the link. If you have any questions during the modification, you can post them in the community and we will respond in a timely manner. We believe that using our machine modifications can achieve better performance.

@spartan50416 As shown in the figure below, the CP4 can have a separate fan heat sink, with EMMC, TF-card, and USB interfaces stored. The USB 3.0 interface can expand SSDs or mechanical hard disks. The machine has independent on-off buttons, which can be customized by modifying software, or external keyboards can be extended through the ADC interface. Firmware upgrades are the same as raspberry pi. You can use the balena Etcher tool to create a startup disk, and the startup media can be a TF card, a USB flash drive, or an EMMC.

@tonyone0902 显示异常的时候，打印一下下面两个命令，结果发上来：
sudo cat /sys/kernel/debug/dri/0/summary
sudo cat /sys/kernel/debug/dw-hdmi0/status

@tonyone0902 数据格式的问题可能性比较大。

@xingzhan2012 声卡选到耳机输出

The CM5-evb board has two native eDP interfaces, designed according to the standard 30PIN eDP interface, and can directly drive an eDP LCD without any conversion. Interface integrated backlight control circuit. LCD backlight brightness adjustment can be achieved.

@allen 看看内核部分是否确认一些配置。自己加上更新一下。

@xingzhan2012 四月初各个店铺上架。

@lej40 said in Type c power port:

Is the the type-c PD port also a USB-c data port

Sorry,This port is used for power supply and has no data connection.

@tonyone0902 如下图所示，板子的BOTTOM面有测试点，可以焊接外部电源。

机器本身不具备电量侦测功能，可以外加库仑计通过I2C接口。

@tonyone0902 最低输入电压5V，所以并联是不行的，串联12V从TYPEC输入没有问题。

• Product image
  
  

• All interface functions have been debugged and are currently undergoing performance optimization.

• It is expected to be sold normally in early April.

@test 这是没有正确识别到TF卡的系统分区，TF卡先格式化一次，然后重新制作启动盘。

@xingzhan2012 摄像头的调试周期会比较长，做AI部分对摄像头像素要求不会太高，可以考虑先使用USB接口的摄像头模组。

@ccjjww1222 打开DSI以后无需诱骗器就可以登录了。需要的分辨率在DSI配置里边写就好了。

@xingzhan2012 可以再DTS默认开启DSI配置。诱骗器没有效果就说明没有正常是被识别。

@jugg 用的哪个固件？环境变量有没有修改最大分辨率。

@jugg 下图少个逗号

@xingzhan2012 摄像头可以使用gstreamer。默认的镜像里边已经支持。
USB摄像头预览，参数根据自己设备的情况修改：

gst-launch-1.0 v4l2src device=/dev/video20 ! image/jpeg, width=1920, height=1080, framerate=25/1 ! jpegparse ! mppjpegdec ! kmssink plane-id=88

摄像头编码：

gst-launch-1.0 v4l2src device=/dev/video11 ! video/x-raw,format=NV12 ! mpph264enc ! h264parse ! filesink location=1.h264 -e

注意：默认的mipi摄像头对应的video11节点，USB摄像头对应的video20.

@jugg 已经修改，谢谢提醒。

@ccjjww1222 github下载内核代码，自己修改就可以了。

@jugg QT调用gstreamer的例子网上有很多，QT官方也有教程。先尝试一下。注意KMSSINK虽然性能比较好，但是会独占图层。开发的时候注意下。

@jugg kmssink plane-id=88这个性能是最好的

@jugg 最新发布的ubuntu镜像已经支持GST框架的编解码。可以更新测试你的case。

@jugg

gst-launch-1.0 v4l2src device=/dev/video20 ! image/jpeg, width=3840, height=2160, framerate=30/1 ! jpegparse ! mppjpegdec ! videoconvert ! fpsdisplaysink sync=false signal-fps-measurements=true sync=false

@jugg 实际测试4K 3840*2160 30fps MJPG格式没有问题。