Hi Darius, The if_atsam driver is used extensively on industrial / custom ATSAME71 boards with external SDRAM with LibBSD. The reliability has been very good, you can see in the LibBSD change log for if_atsam some changes a couple of years back that resolved the last issues.
regards, Matthew. On Thu, 27 Jun 2024, 05:22 Dariusz Sabała, <dariusz.sab...@creotech.pl> wrote: > Hi > > I am working on RTEMS LibBSD Ethernet networking POC on ATSAMV71 and on > ATSAMRH71 > > My tries on ATSAMV71 were limited due to very small amount of SDRAM memory > on evaluation board - its only 2MB. > > I managed to do the most on SAMRH71F20-EK (CQFP package) evaluation board: > evaluation board is connected to my workstation and I can both ping RH71 > from PC and ping PC from RH71 RTEMS Shell console, it works very well until > random microcontroller freeze. Sometimes program freezes after 20 ping > requests + replies, sometimes after 250, but it always freezes and then > debugging session is broken too, I have to disconnect and attach to see the > microcontroller state and it is trapped in endless loop I put in bootloader > startup code to give me a time to inspect the microcontroller state. > > It might be a misleading clue, but changing GMAC interrupt priority to be > numerically bigger than Systick interrupt makes this stress test to endure > more ping requests. > Also an AHB Bus Matrix peripheral of SAMRH71 reports some errors, but I > lack knowledge and documentation on how this certain MCU peripheral (AHB > matrix controller) works. > I doubt it, but SAMRH71F20-EK evaluation board could be a source of > problem too, since it seems they completely ignored hardware design > recommendations of KSZ8061 PHY. > > In order to make if_atsam driver work on ATSAMRH71 I had to: > > - copy and mass sed GMAC driver files, since they changed name of > registers macros a bit > - change pins configuration to reflect which pins are used on my > evalboard > - change "rtems_bsd_if_atsam_get_if_media_props" to return > is_fixed=true and duplex=IFM_FDX > - change SYSINIT_DRIVER_REFERENCE(ukphy, miibus); to > SYSINIT_DRIVER_REFERENCE(ksz8091rnb, miibus); leaving ukhpy lead to > crashesh after printing long "sssss" strings > > > Please tell me about a maturity and status of ATSAMV71 if_atsam driver, is > it tested on any atsamv71 board? Then how, since there is so little memory > on Xplained Ultra? > I understand that most of the RTEMS BSP is made only for demonstration > purposes and that's why I'm asking, maybe someone can tell me what should > be changed in it to make it work reliably? Do you have any other resources > to suggest I can use to learn how this stack works beside two readme files > in rtems-libbsd repo and obviously freebsd documentation? > > Anyway, guys - nice job creating rtems-libbsd. I hope to learn more about > it and use it in our projects. > > Best regards > > Dariusz Sabała > Embedded software engineer > Creotech Instruments > _______________________________________________ > users mailing list > users@rtems.org > http://lists.rtems.org/mailman/listinfo/users
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