Hello all, my first endeavours with IIO began with the requirement to sample a 4-channel SPI ADC at 10 kHz rate with accurate periodicy, lowest jitter and lowest CPU usage. I first adapted the SPI master to use the hardware DMA capability for cyclic transfers from the SPI controller. This fulfills the above requirements, any other approach would introduce too much jitter, pause in sample trains, or too much CPU overhead. Then I started working on the IIO driver to use the above. Then I got stuck. After a trigger, I would like to capture for a large period of time, with a fixed sampling frequency, not via a software scheduled trigger per scan. I.e. any trigger (if at all) should start a continuous capture. How can I do this in IIO? I only see calls of a single scan (4 channels, 16-bits per channel) to my trigger handler; this induces too much overhead. Regards, Leon. -- 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
