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.
