OrangePi Zero3: Instructions for using the micro linux system in the onboard SPI Flash

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Chapt 2. Introduction to the use of the development board

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2.6. Instructions for using the micro linux system in the onboard SPI Flash

There is a 16MB SPI Flash on the development board, and its location is shown in the figure below:

Img 2.54

There is a tiny linux system programmed into SPI Flash by default, which is mainly used to prove that the development board can start normally. When you get the development board, you don't need to burn the system into the TF card, you only need to connect the Type-C power supply to the development board to start the micro linux system in the SPI Flash.

The main functions of this system are:

a. During the u-boot start-up phase, the red LED light will be lit, and after entering the kernel, the red LED light will be turned off and the green LED light will be set to flash;

b. If the development board is connected to an HDMI screen, after the system starts up, the command line interface of the micro-linux system can be seen on the HDMI screen;

c. If the development board is connected with a USB keyboard, some simple linux commands can be run on the command line, such as ls, cd, etc.

Due to the limited functions of the tiny linux system in SPI Flash, if you want to use all the functions of the development board normally, please burn the linux image or Android image to the TF card, and then use it.

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