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tldr/pages/linux/i2cset.md

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2025-07-09 11:19:46 +08:00
# i2cset
> Set the value of a register of an I2C device.
> See also: `i2cdetect`, `i2cdump`, `i2cget`.
> Note: All addresses should be specified in hexadecimal.
> More information: <https://manned.org/i2cset>.
- Write to a register of an I2C device:
`i2cset {{i2cbus}} {{device_address}} {{register_address}} {{value}}`
- Write to a register of an I2C device without asking for confirmation:
`i2cset -y {{i2cbus}} {{device_address}} {{register_address}} {{value}}`
- Write to a register of an I2C device using a specific mode:
`i2cset {{i2cbus}} {{device_address}} {{register_address}} {{value}} {{b|w|c|s|i}}`