On Thu, 18 Oct 2012 18:18:55 +0800, Raymond Kao wrote: > I built i2c tools from the source i2c-tools -3.1.0 and try to use it to > access my home brew DM3730 board. When I use i2cdetect to check I2c bus, > the error "controller timed out" happens, but if I run i2cget to retrieve > data from the device, it can get the right result. I checked the code to > look for the difference, and found that in i2cget.c, the code > > res = i2c_smbus_write_byte(file, daddress); > > has been called before read data from device, which seems to set register > address for reading. In i2cdetect.c, there is no instructions like this. I > am not sure if this causes the time out error, since i2cdetect app can scan > other devices on the bus correctly. > > Can anybody can help me to understand why this happens? Thank you very much. This question is unrelated to hardware monitoring. Please ask on the linux-i2c list instead: http://vger.kernel.org/vger-lists.html#linux-i2c Thanks, -- Jean Delvare _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
