I2c-cpm drievr not working

smitha.vanga at wipro.com smitha.vanga at wipro.com
Fri Oct 14 15:14:55 EST 2011


 
Hi Scott,

I am using the i2c-cpm driver to read and write to a LM75 sensor. The 
int i2c_master_send(struct i2c_client *client,const char *buf ,int count) function is not successful.
Could you let me know what may be the issue. Below are the traces.

DS75_DRIVER : Open
DS75_DRIVER : Device Open Successful!
DS75_DRIVER  : ioctl TEMP_READ cmd 1
In i2c_master_send enter-------
In i2c_master_send enter [2]-------
In i2c_master_send msg.addr=c031
In i2c_master_send 1 client->addr =0
In i2c_master_send 2
In i2c_master_send 3
In i2c_master_send 4
--- enter i2c_transfer
i2c_transfer_entry
*********** cpm_i2c_xfer
***********cpm_i2c_parse_message
***********cpm_i2c_check_message
*********** else
 rv =1
In i2c_master_send 5
 i2c_master_recv client.addr=0
--- enter i2c_transfer
i2c_transfer_entry
*********** cpm_i2c_xfer
***********cpm_i2c_parse_message
i2c_adapter i2c-0: I2C transfer: timeout
*********** cpm_i2c_xfer out_err
***********cpm_i2c_force_close
 rv =ffffff87
DS75_DRIVER  : Error reading from I2C 

Regards,
Smitha
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