Shenzhen Big Tree Technology Co., Ltd.
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3. Interface Instruction
3.1 Installing the Core Board
M4P+CM4：Pay attention to the direction, as shown below.
M4P+CM4：Pay attention to the direction, as shown below.
3.2 40 pin GPIO
When working with CM4, the pin arrangement of 40 Pin GPIO is exactly the same as
that of Raspberry Pi. When working with CB1, it is a custom IO arrangement, as
shown in the figure below, the 'GPIO4' in front of '_' is the IO of CM4, and the latter
'PC7' is the IO of CB1.
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