Hi Nuno, Yeah, Rick and I both know about libiio. We've actually been talking back and forth by direct email yesterday. I've been attempting to find more information on how the sample etc are stored in the buffer. I have been successful reading the buffer one sample at a time however. But the data in the buffer is not how is explained in what little information I could find. Which says something like 16bits data per channel, and optional 64bit time stamp. Where the data values I'm seeing out of the buffer are 32bit values, with 16bit data, and 3 bit id tag.
I could not figure out if fast mode was enabled or not, until now. But where can I find more information on that ? I would like to test it if possible. I really like the whole idea of iio, but it seems maintainers have been coming and going. So finding good information on it is not easy, and what can be found may, or may not apply to the current state of iio . . . $ uname -r 4.1.9-bone-rt-r16 $ lsb_release -a No LSB modules are available. Distributor ID: Debian Description: Debian GNU/Linux 7.8 (wheezy) Release: 7.8 Codename: wheezy $ lsmod |grep industrialio industrialio 41756 2 ti_am335x_adc,kfifo_buf The first time I've noticed kfifo_buf was last night and was curious . . . On Sat, Oct 10, 2015 at 6:28 AM, Nuno Sucena Almeida <n...@aeminium.org> wrote: > On 10/08/2015 10:06 PM, Rick Mann wrote: > > What would it take to get libiio: > > > > > https://wiki.analog.com/resources/tools-software/linux-software/libiio > > > > Into the BBB kernels? I think this would be amazing. > > Hi Rick, > > the linux kernel supports IIO (industrial input output) for quite some > time and the BBB ADC has a IIO driver. You will have to enable the ADC > pins in the device tree. > > I just started using the libiio on the BBB to read all 8 ADC channels. I > initially tried it with the latest 4.2.x-bone linux kernel, but ran into > issues enabling buffer continuous mode, so reverted back to 4.1.5-ti-r10 > (ubuntu 15.10). Didn't investigate further what makes it different, will > do whenever have the opportunity. > > I'm also investigating the low sample rates I'm getting...when creating > the buffer the library complains: "WARNING: High-speed mode not > enabled". The full source code is available and the documentation has > reasonable quality, so it's just a matter of putting some time and > effort improving it. > > Just for reference, here's the list of loaded modules after enabling the > ADC through the device tree: > > ~$ lsmod > Module Size Used by > ti_am335x_adc 5984 0 > kfifo_buf 3524 1 ti_am335x_adc > industrialio 52301 2 ti_am335x_adc,kfifo_buf > omap_rng 5254 0 > rng_core 8737 1 omap_rng > ti_am335x_tsc 6048 0 > ti_am335x_tscadc 6199 2 ti_am335x_adc,ti_am335x_tsc > uio_pdrv_genirq 3745 0 > uio 10395 1 uio_pdrv_genirq > tilcdc 32944 0 > > ~$ uname -r > 4.1.5-ti-r10 > > ~$ lsb_release -a > No LSB modules are available. > Distributor ID: Ubuntu > Description: Ubuntu Wily Werewolf (development branch) > Release: 15.10 > Codename: wily > > regards, > Nuno > > -- > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to beagleboard+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
