In many industrial applications it's common to mix digital (binary) and analog I/O. In many cases digital input modules have change buffers and sometimes event time stamping capabilities. While the gpio subsystem can support software timestamping and buffering it doesn't fit well for many industrial digital applications where the host process reads buffered digital samples or events from input modules. Would anyone appose or support the addition of digital channel type or suggest an alternative path to supporting this use case? A possible alternative is to use 1 bit for storage and use voltage for type. For instance a 16 channel 24V DC Input module would present 16 input voltage channels with 1 bit of storage each. 0 would correspond to 0VDC and 1 to 24VDC. Cheers, George McCollister Software Architect NovaTech LLC -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html