Re: ATSAMV71 / ATSAMRH71 ethernet POC with RTEMS-LIBBSD

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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 Saba=C5=82a, <dariusz.sabala-5+J3KXwDsBirDJvtcaxF/[email protected]=
>
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 memor=
y
> on evaluation board - its only 2MB.
>
> I managed to do the most on  SAMRH71F20-EK (CQFP package) evaluation boar=
d:
> 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 unt=
il
> 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 t=
he
> microcontroller state and it is trapped in endless loop I put in bootload=
er
> 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 endur=
e
> 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=3Dtrue and duplex=3DIFM_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, i=
s
> it tested on any atsamv71 board? Then how, since there is so little memor=
y
> 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 resource=
s
> to suggest I can use to learn how this stack works beside two readme file=
s
> 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 Saba=C5=82a
> Embedded software engineer
> Creotech Instruments
> _______________________________________________
> users mailing list
> [email protected]
> http://lists.rtems.org/mailman/listinfo/users

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<div dir=3D"auto"><div>Hi Darius,</div><div dir=3D"auto"><br></div><div dir=
=3D"auto">The=C2=A0<span style=3D"font-family:aptos,aptos_embeddedfont,apto=
s_msfontservice,calibri,helvetica,sans-serif;font-size:16px">if_atsam drive=
r is used extensively on industrial / custom ATSAME71 boards with external =
SDRAM with LibBSD. The reliability has been very good, you can see in the L=
ibBSD change log for if_atsam some changes a couple of years back that reso=
lved the last issues.</span></div><div dir=3D"auto"><span style=3D"font-fam=
ily:aptos,aptos_embeddedfont,aptos_msfontservice,calibri,helvetica,sans-ser=
if;font-size:16px"><br></span></div><div dir=3D"auto"><span style=3D"font-f=
amily:aptos,aptos_embeddedfont,aptos_msfontservice,calibri,helvetica,sans-s=
erif;font-size:16px">regards, Matthew.</span></div><div dir=3D"auto"><font =
face=3D"aptos, aptos_embeddedfont, aptos_msfontservice, calibri, helvetica,=
 sans-serif"><span style=3D"font-size:16px"><br></span></font></div><div di=
r=3D"auto"><font face=3D"aptos, aptos_embeddedfont, aptos_msfontservice, ca=
libri, helvetica, sans-serif"><span style=3D"font-size:16px"><br></span></f=
ont><br><div class=3D"gmail_quote" dir=3D"auto"><div dir=3D"ltr" class=3D"g=
mail_attr">On Thu, 27 Jun 2024, 05:22 Dariusz Saba=C5=82a, &lt;<a href=3D"m=
ailto:dariusz.sabala-5+J3KXwDsBirDJvtcaxF/[email protected]">dariusz.sabala-5+J3KXwDsBirDJvtcaxF/[email protected]</a>&gt; wrote:=
<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;bord=
er-left:1px #ccc solid;padding-left:1ex">




<div dir=3D"ltr">
<div style=3D"font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Cali=
bri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
Hi</div>
<div style=3D"font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Cali=
bri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Cali=
bri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
I am working on RTEMS LibBSD Ethernet networking POC on ATSAMV71 and on ATS=
AMRH71</div>
<div style=3D"font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Cali=
bri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Cali=
bri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
My tries on ATSAMV71 were limited due to very small amount of SDRAM memory =
on evaluation board - its only 2MB.</div>
<div style=3D"font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Cali=
bri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Cali=
bri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
I managed to do the most on =C2=A0SAMRH71F20-EK (CQFP package) evaluation b=
oard:</div>
<div style=3D"font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Cali=
bri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
evaluation board is connected to my workstation and I can both ping RH71 fr=
om PC and ping PC from RH71 RTEMS Shell console, it works very well until r=
andom microcontroller freeze. Sometimes program freezes after 20 ping reque=
sts + 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.</div>
<div style=3D"font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Cali=
bri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Cali=
bri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
It might be a misleading clue, but changing GMAC interrupt priority to be n=
umerically bigger than Systick interrupt makes this stress test to endure m=
ore ping requests.</div>
<div style=3D"font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Cali=
bri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
Also an AHB Bus Matrix peripheral of SAMRH71 reports some errors, but I lac=
k knowledge and documentation on how this certain MCU peripheral (AHB matri=
x controller) works.</div>
<div style=3D"font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Cali=
bri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
I doubt it, but SAMRH71F20-EK evaluation board could be a source of problem=
 too, since it seems they completely ignored hardware design recommendation=
s of KSZ8061 PHY.</div>
<div style=3D"font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Cali=
bri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Cali=
bri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
In order to make if_atsam driver work on ATSAMRH71 I had to:</div>
<ul style=3D"margin-top:0px;margin-bottom:0px">
<li style=3D"font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calib=
ri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0);list-style-type:&qu=
ot;- &quot;">
<span style=3D"font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Cal=
ibri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">copy and mass se=
d GMAC driver files, since they changed name of registers macros a bit<br>
</span></li><li style=3D"font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontS=
ervice,Calibri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0);list-st=
yle-type:&quot;- &quot;">
<span style=3D"font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Cal=
ibri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">change pins conf=
iguration to reflect which pins are used on my evalboard<br>
</span></li><li style=3D"font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontS=
ervice,Calibri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0);list-st=
yle-type:&quot;- &quot;">
<span style=3D"font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Cal=
ibri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">change &quot;rte=
ms_bsd_if_atsam_get_if_media_props&quot; to return is_fixed=3Dtrue and dupl=
ex=3DIFM_FDX<br>
</span></li><li style=3D"font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontS=
ervice,Calibri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0);list-st=
yle-type:&quot;- &quot;">
<span style=3D"font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Cal=
ibri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">change SYSINIT_D=
RIVER_REFERENCE(ukphy, miibus); to SYSINIT_DRIVER_REFERENCE(ksz8091rnb, mii=
bus); =C2=A0leaving ukhpy
 lead to crashesh after printing long &quot;sssss&quot; strings</span></li>=
</ul>
<div style=3D"font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Cali=
bri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Cali=
bri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
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?</div>
<div style=3D"font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Cali=
bri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
I understand that most of the RTEMS BSP is made only for demonstration purp=
oses and that&#39;s why I&#39;m asking, maybe someone can tell me what shou=
ld be changed in it to make it work reliably? Do you have any other resourc=
es to suggest I can use to learn how this
 stack works beside two readme files in rtems-libbsd repo and obviously fre=
ebsd documentation?</div>
<div style=3D"font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Cali=
bri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Cali=
bri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
Anyway, guys - nice job creating rtems-libbsd. I hope to learn more about i=
t and use it in our projects.</div>
<div style=3D"font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Cali=
bri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Cali=
bri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
Best regards</div>
<div style=3D"font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Cali=
bri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Cali=
bri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
Dariusz Saba=C5=82a</div>
<div style=3D"font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Cali=
bri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
Embedded software engineer=C2=A0</div>
<div style=3D"font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Cali=
bri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
Creotech Instruments</div>
<div id=3D"m_-4776152818699575877Signature" style=3D"color:inherit"></div>
</div>

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 noreferrer" target=3D"_blank">http://lists.rtems.org/mailman/listinfo/user=
s</a></blockquote></div></div></div>

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