Marten Svanfeldt wrote on 2011-03-04: > Hi, > > I have recently begun looking at utilizing iio for the input part of a > robotics system but have some doubts about its usability for which I > would like your comments. > > Today we have (in our embedded system) a number of custom written > drivers interfacing SPI attached accelerometers and AD converters, > utilizing hrtimers for software triggering of sampling at 50 to 250 Hz. > Herein lays my current question, has anyone used the IIO system with > these type of sampling rates? The RTC based trigger seems to only give > second or higher intervals. > > I will be looking at converting our special drivers to be acceptable > for upstream submission, same for a hrtimers based trigger, should > that be a good idea. > > Best regards > Marten Svanfeldt I recently submitted a trigger source driver that utilizes Blackfin hardware timer. http://wiki.analog.com/software/linux/docs/iio/iio-trig-bfin-timer Not sure what your platform is, but there might be similar peripherals, that can generate sub second cyclic interrupts. I successfully used it on a fast Blackfin processor at frequencies of 10kHz and above, with this simple demo application. http://wiki.analog.com/software/linux/docs/iio/iio_netscope Greetings, Michael -- Analog Devices GmbH Wilhelm-Wagenfeld-Str. 6 80807 Muenchen Sitz der Gesellschaft: Muenchen; Registergericht: Muenchen HRB 40368; Geschaeftsfuehrer:Dr.Carsten Suckrow, Thomas Wessel, William A. Martin, Margaret Seif -- 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
