OK2440 development board user manual, introduces the use of the development board and development tutorials
The document provides step‑by‑step instructions for operating the Linux system that comes pre‑installed on the OK2 440 development board. It covers booting Linux, setting the board to auto‑start, selecting the file system, switching between mouse and touch screen, transferring files via serial, mounting NFS, SD card and USB drive, using CMOS and USB cameras, setting the system clock, testing audio and network, and using web server, Telnet, FTP, auto‑run and abort functions.
A separate development tutorial section shows how to install Red Hat 9.0, add new users, create a cross‑compilation environment, compile and configure the kernel, build file systems, configure drivers (UART, USB, SD/MMC, camera, LED, RTC), and develop graphical applications with Qt. It also includes examples of GUI programming, threading, and driver experiments. This manual is written in Chinese.
| Bootloader parameter [0] values | 1=app, 2=Linux, 3=WinCE |
|---|---|
| Supported CMOS camera | OV9650 |
Enter the bootloader menu, select parameter 0 and set its value to 2, then save and reset the board.
Use a super terminal on the PC and the "sz" command (e.g., sz /usr/etc/rc.local) to send files, and the "rz" command to receive them.
Configure the PC as an NFS server, then on the board use the mount command to attach the remote directory.