i2c_master_send(9) suse man page | unix.com

I2C_MASTER_SEND(9)					      I2C and SMBus Subsystem						I2C_MASTER_SEND(9)

NAME
       i2c_master_send - issue a single I2C message in master transmit mode

SYNOPSIS
       int i2c_master_send(struct i2c_client * client, const char * buf, int count);

ARGUMENTS
       client
	   Handle to slave device

       buf
	   Data that will be written to the slave

       count
	   How many bytes to write, must be less than 64k since msg.len is u16

DESCRIPTION
       Returns negative errno, or else the number of bytes written.

COPYRIGHT
Kernel Hackers Manual 2.6.					     July 2010							I2C_MASTER_SEND(9)