---
name: "i2c_transfer"
section: "9"
platform: "linux"
package: "linux-manual-3.16"
version: "3.16.56-1+deb8u1"
release: "Debian 8 (Jessie)"
platforms: ["linux"]
url: "https://new.carta.tech/i2c_transfer"
---

# i2c\_transfer(9)

execute a single or combined I2C message

## NAME

i2c\_transfer - execute a single or combined I2C message

## SYNOPSIS

**int i2c\_transfer(struct i2c\_adapter \*** *adap***, struct i2c\_msg \*** *msgs***, int** *num***);**

## ARGUMENTS

*adap*

Handle to I2C bus

*msgs*

One or more messages to execute before STOP is issued to terminate the operation; each message begins with a START.

*num*

Number of messages to be executed.

## DESCRIPTION

Returns negative errno, else the number of messages executed.

Note that there is no requirement that each message be sent to the same slave address, although that is the most common model.

## COPYRIGHT