range Pi User Manual Copyright reserved by Shenzhen Xunlong Software Co., Ltd
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As can be seen from the above table, i2c4_m0 and spi3_m0 are multiplexed pins,
and both cannot be opened at the same time, and i2c3_m0 and uart3_m0 are also
referenced. Open at the same time, i2c3_m0 and uart3_m0 are also pin multiplexed,
and both cannot be opened at the same time
2) In the linux system, the I2C bus in the 40 pin is closed by default, and it needs to be
opened manually to use it. The detailed steps are as follows:
a. First run orangepi-config, ordinary users remember to add sudo permission
orangepi@orangepi:~$ sudo orangepi-config
b. Then select System
c. Then select Hardware
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