Hi, I am trying to get a PCF8591 and a PCF8574 working using the i2c-pport adaptor. I have at the moment the i2c-pport and algo-bit modules loaded and am trying to get access to the PCF chips. modprobe pcf8574 modprobe pcf8591 AND modprobe pcf8574 probe=0,0x20 modprobe pcf8591 probe=0,0x48 don't actually creaate any files under proc and the modules remain unused as far as lsmod is concerned. I can get the devices up if I modprobe pcf8574 force_pcf8574=0,0x20 modprobe pcf8591 force_pcf8591=0,0x48 everything loads, I get the relavent files under /proc/sys/dev/sensors it doesn't look like I am really taking to the chips though. Changes I make on the inputs aren't reflected in the values under /proc. If I run the i2cdetect 0 I get UU showing in both 0x20 and 0x48 I have used my scope and know that signals are getting to the chips in question but it isn't a storage scope so I can't look to see if the pulses are really valid i2c pulses. Any hints on what to do next. -- Best Regards, David Price
