Thanks! In this reference, I can see a custom firmware has been developes and a header file was missing in its code. However, in my case, I'm using a firmware which is in /lib/firmware by default (am335x-pru1-fw). I assume this firmware works, once it comes with distro (I'm using official image provided in BeagleBone site).
Why am I getting this error with a firmware it's supposed to work? Please, would you shed some light on it? Best Regards. Em dom, 17 de jan de 2021 03:00, Vinicius Juvinski < vinicius.juvin...@gmail.com> escreveu: > Yes ,the answer is there - 4.2 > > Em dom., 17 de jan. de 2021 às 01:55, Pedro Henrique Fonseca Bertoleti < > phfbertol...@gmail.com> escreveu: > >> Sorry, I couldn't find any information on this error 22 on PRU cook book. >> Please, anyone can help me on handling this error? >> >> Em dom, 17 de jan de 2021 01:46, Vinicius Juvinski < >> vinicius.juvin...@gmail.com> escreveu: >> >>> Hi Pedro, >>> >>> >>> You are having error 22 - I don’t remember right now the cause , the >>> prucookbook has the explanation and how to fix :) >>> >>> Em dom., 17 de jan. de 2021 às 00:59, phfbertoleti < >>> phfbertol...@gmail.com> escreveu: >>> >>>> Hi vinicius. >>>> >>>> First of all, thanks for the reply and for indicating me PRU cook book. >>>> Regarding dmesg messages, yes, I've checked them (as shown below). It >>>> seems PRUs are available for use, am I right? >>>> What do you recommend as a hello world test for PRU? >>>> >>>> --------------------- >>>> [ 11.169923] remoteproc remoteproc0: 4a334000.pru is available >>>> [ 11.171927] remoteproc remoteproc1: 4a338000.pru is available >>>> [ 60.948771] remoteproc remoteproc2: wkup_m3 is available >>>> [ 60.956133] remoteproc remoteproc2: powering up wkup_m3 >>>> [ 60.956160] remoteproc remoteproc2: Booting fw image >>>> am335x-pm-firmware.elf, size 217168 >>>> [ 60.956412] remoteproc remoteproc2: remote processor wkup_m3 is now >>>> up >>>> [ 454.023370] remoteproc remoteproc1: powering up 4a338000.pru >>>> [ 454.027965] remoteproc remoteproc1: loading >>>> /lib/firmware/am335x-pru1-fw failed with error -22 >>>> [ 454.027986] remoteproc remoteproc1: Direct firmware load for >>>> am335x-pru1-fw failed with error -22 >>>> [ 454.028006] remoteproc remoteproc1: request_firmware failed: -22 >>>> [ 454.043116] remoteproc remoteproc1: Boot failed: -22 >>>> --------------------- >>>> >>>> >>>> Best Regards, >>>> Pedro Bertoleti >>>> >>>> Em sábado, 16 de janeiro de 2021 às 23:05:07 UTC-4, >>>> vinicius...@gmail.com escreveu: >>>> >>>>> Hi Pedro, >>>>> >>>>> I recommend you take a look at >>>>> https://markayoder.github.io/PRUCookbook/ >>>>> >>>>> Have you checked the dmesg to see what is happening at kernel level ? >>>>> >>>>> Em sáb., 16 de jan. de 2021 às 23:25, phfbertoleti < >>>>> phfber...@gmail.com> escreveu: >>>>> >>>>>> Hi everyone. >>>>>> >>>>>> My name is Pedro and I'm from Brazil. I'm trying to learn how to use >>>>>> PRUs in BeagleBone (I'm using BeagleBone Green Wireless now) and I'm >>>>>> facing >>>>>> a problem I cannot solve. >>>>>> >>>>>> I'm reading Derek Molloy's book (Exploring BeagleBone) and one of the >>>>>> first examples / "hello world"-like is checking which firmware is loaded >>>>>> in >>>>>> PRU0 and start it. However, when I try to do this, I get "write error: >>>>>> Invalid argument" as error output: >>>>>> >>>>>> debian@beaglebone:/sys/class/remoteproc/remoteproc1$ cat firmware >>>>>> am335x-pru1-fw >>>>>> debian@beaglebone:/sys/class/remoteproc/remoteproc1$ echo 'start' > >>>>>> state >>>>>> -bash: echo: write error: Invalid argument >>>>>> >>>>>> What am I doing wrong? I would like to see "running" at state value, >>>>>> in order to be sure PRU0 is working. >>>>>> >>>>>> Here follows some useful information: >>>>>> >>>>>> Kernel version: 4.19.94-ti-r42 >>>>>> Dmesg output related to remoteproc: >>>>>> >>>>>> --------------------- >>>>>> [ 11.169923] remoteproc remoteproc0: 4a334000.pru is available >>>>>> [ 11.171927] remoteproc remoteproc1: 4a338000.pru is available >>>>>> [ 60.948771] remoteproc remoteproc2: wkup_m3 is available >>>>>> [ 60.956133] remoteproc remoteproc2: powering up wkup_m3 >>>>>> [ 60.956160] remoteproc remoteproc2: Booting fw image >>>>>> am335x-pm-firmware.elf, size 217168 >>>>>> [ 60.956412] remoteproc remoteproc2: remote processor wkup_m3 is >>>>>> now up >>>>>> [ 454.023370] remoteproc remoteproc1: powering up 4a338000.pru >>>>>> [ 454.027965] remoteproc remoteproc1: loading >>>>>> /lib/firmware/am335x-pru1-fw failed with error -22 >>>>>> [ 454.027986] remoteproc remoteproc1: Direct firmware load for >>>>>> am335x-pru1-fw failed with error -22 >>>>>> [ 454.028006] remoteproc remoteproc1: request_firmware failed: -22 >>>>>> [ 454.043116] remoteproc remoteproc1: Boot failed: -22 >>>>>> --------------------- >>>>>> >>>>>> Thanks in advance. >>>>>> >>>>>> Best Regards, >>>>>> Pedro Bertoleti >>>>>> >>>>>> -- >>>>>> 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...@googlegroups.com. >>>>>> To view this discussion on the web visit >>>>>> https://groups.google.com/d/msgid/beagleboard/7c2be7bd-63f3-4798-85dd-e5be63d86831n%40googlegroups.com >>>>>> <https://groups.google.com/d/msgid/beagleboard/7c2be7bd-63f3-4798-85dd-e5be63d86831n%40googlegroups.com?utm_medium=email&utm_source=footer> >>>>>> . >>>>>> >>>>> -- >>>> 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. >>>> To view this discussion on the web visit >>>> https://groups.google.com/d/msgid/beagleboard/8e94c2a0-287a-4c6c-8342-87a7f6a9fcabn%40googlegroups.com >>>> <https://groups.google.com/d/msgid/beagleboard/8e94c2a0-287a-4c6c-8342-87a7f6a9fcabn%40googlegroups.com?utm_medium=email&utm_source=footer> >>>> . >>>> >>> -- >>> 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. >>> >> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/beagleboard/CAB6xwCr3DMGwQD0%2Be5dxHMZJHy6roXgRDHYAvYpJJuqTPw175w%40mail.gmail.com >>> <https://groups.google.com/d/msgid/beagleboard/CAB6xwCr3DMGwQD0%2Be5dxHMZJHy6roXgRDHYAvYpJJuqTPw175w%40mail.gmail.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- >> 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. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/beagleboard/CAJK9pqdUcG%2Bi9zZBzqU5VFQDJM2R5Hu0WYwFc2jwT4q7M8nnkg%40mail.gmail.com >> <https://groups.google.com/d/msgid/beagleboard/CAJK9pqdUcG%2Bi9zZBzqU5VFQDJM2R5Hu0WYwFc2jwT4q7M8nnkg%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> > -- > 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. > To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/CAB6xwCqFvpRVanfBe4w-1y3vomgrb1Jax%2BzPBfJ%2BNrXsir4vgQ%40mail.gmail.com > <https://groups.google.com/d/msgid/beagleboard/CAB6xwCqFvpRVanfBe4w-1y3vomgrb1Jax%2BzPBfJ%2BNrXsir4vgQ%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. 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