On 07/04/16 04:51, Yong Li wrote: > am testing an IIO gyro sensor using kernel 4.4, currently I can use > the sysfs trigger as a trigger, I can read the data from > /dev/iio:deviceX after "echo 1 > trigger_now". > > > I want to use a gpio pin for the data trigger. For example, when the > GPIO pin 62 is low, the data will be ready. > > > How to connect/setup the gpio with the IIO triggers, how can I use the > iio_trig_interrupt.ko? I found there is new triggers in the > /sys/bus/iio/devices after I loaded the iio_trig_interrupt.ko. Hi Yong, Unfortunately a means of identifying that a given IRQ (GPIO or otherwise) is to be used as an iio_trigger is needed. At the moment, that driver only supports getting this from an IORESOURCE_IRQ in a board file. There was a recent thread on device tree bindings for these; http://marc.info/?l=linux-iio&m=145621588017248&w=2 It got a little non obvious from the point of view of what the bindings should look like and buried under other work. Still the patches there will probably get you going. Jonathan > > Thanks, > Yong > -- > 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 > -- 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
