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.