rst
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Raspberry Pi 3 Model A+ details

Thu Nov 15, 2018 10:16 am

Congratulations for the new great model! I think, some developers want to support it in their software (including myself). To be able to do this, there are some questions:
  • Which is the revision code of the new device?
  • Where is the Act LED connected (GPIO number?) and is it Low- or High-active?
  • Are there any further peculiarities compared to the RPi 3B+, despite that is has no USB hub / Ethernet chip?
Thanks in advance.

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DougieLawson
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Re: Raspberry Pi 3 Model A+ details

Thu Nov 15, 2018 10:31 am

Can answer the first question, can't do the other two.

Code: Select all

processor       : 3
model name      : ARMv7 Processor rev 4 (v7l)
BogoMIPS        : 38.40
Features        : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32
CPU implementer : 0x41
CPU architecture: 7
CPU variant     : 0x0
CPU part        : 0xd03
CPU revision    : 4

Hardware        : BCM2835
Revision        : 9020e0
Serial          : 00000000cb95b0ba
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Re: Raspberry Pi 3 Model A+ details

Thu Nov 15, 2018 10:34 am

I've updated the revision code docs here

https://github.com/raspberrypi/document ... /README.md
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rst
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Re: Raspberry Pi 3 Model A+ details

Thu Nov 15, 2018 11:38 am

Thanks for infos! For the moment I suppose, the Act LED is High-active on GPIO 29 like on the RPi 3 B+.

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Re: Raspberry Pi 3 Model A+ details

Thu Nov 15, 2018 11:49 am

rst wrote:
Thu Nov 15, 2018 11:38 am
Thanks for infos! For the moment I suppose, the Act LED is High-active on GPIO 29 like on the RPi 3 B+.
For the moment best to assume same as 3B+ unless indicated (ie. No ethernet, USB Hub, less memory). I'll try and find better answers but the guy who designed it is out of the office.
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Re: Raspberry Pi 3 Model A+ details

Thu Nov 15, 2018 1:14 pm

jamesh wrote:
Thu Nov 15, 2018 11:49 am
rst wrote:
Thu Nov 15, 2018 11:38 am
Thanks for infos! For the moment I suppose, the Act LED is High-active on GPIO 29 like on the RPi 3 B+.
For the moment best to assume same as 3B+ unless indicated (ie. No ethernet, USB Hub, less memory). I'll try and find better answers but the guy who designed it is out of the office.
Check the dt-blob.dts in the vc4 tree - that'll tell you for certain even without Roger.
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Re: Raspberry Pi 3 Model A+ details

Thu Nov 15, 2018 1:36 pm

6by9 wrote:
Thu Nov 15, 2018 1:14 pm
jamesh wrote:
Thu Nov 15, 2018 11:49 am
rst wrote:
Thu Nov 15, 2018 11:38 am
Thanks for infos! For the moment I suppose, the Act LED is High-active on GPIO 29 like on the RPi 3 B+.
For the moment best to assume same as 3B+ unless indicated (ie. No ethernet, USB Hub, less memory). I'll try and find better answers but the guy who designed it is out of the office.
Check the dt-blob.dts in the vc4 tree - that'll tell you for certain even without Roger.
No 3A+ specific section, so assume it uses the same as the 3B+?
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Re: Raspberry Pi 3 Model A+ details

Thu Nov 15, 2018 2:17 pm

jamesh wrote:
Thu Nov 15, 2018 1:36 pm
No 3A+ specific section, so assume it uses the same as the 3B+?
Ah yes, it's obfuscated to stop pesky users finding out about it before launch ;)
Yes it's based on the 3B+ with very few mods. I suspect Phil will be along with a patch adding the 3aplus fairly soon.
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Re: Raspberry Pi 3 Model A+ details

Thu Nov 15, 2018 2:26 pm

6by9 wrote:
Thu Nov 15, 2018 2:17 pm
jamesh wrote:
Thu Nov 15, 2018 1:36 pm
No 3A+ specific section, so assume it uses the same as the 3B+?
Ah yes, it's obfuscated to stop pesky users finding out about it before launch ;)
Yes it's based on the 3B+ with very few mods. I suspect Phil will be along with a patch adding the 3aplus fairly soon.
I have updated my code - based on the RPi 3B+ - for the 3A+ for the moment. There's no hurry.

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Re: Raspberry Pi 3 Model A+ details

Thu Nov 15, 2018 3:30 pm

rst wrote:
Thu Nov 15, 2018 2:26 pm
I have updated my code - based on the RPi 3B+ - for the 3A+ for the moment. There's no hurry.
Is there anything I can run on either of my 3A+ Raspberries to test if your stuff works?
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Re: Raspberry Pi 3 Model A+ details

Thu Nov 15, 2018 5:34 pm

DougieLawson wrote:
Thu Nov 15, 2018 3:30 pm
rst wrote:
Thu Nov 15, 2018 2:26 pm
I have updated my code - based on the RPi 3B+ - for the 3A+ for the moment. There's no hurry.
Is there anything I can run on either of my 3A+ Raspberries to test if your stuff works?
Yes, you can temporarily replace the file kernel7.img on your boot partition with the attached file, after extracting it from the .zip file. You should rename the original kernel7.img before. When you start your RPi 3A+ with it, it should blink 5 times with the Act LED and then report, that it is a RPi 3A+. If you have an USB keyboard attached, you can write on it. It's bare metal. ;)
kernel7.img.zip
RPi 3A+ test
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Re: Raspberry Pi 3 Model A+ details

Thu Nov 15, 2018 6:45 pm

That worked, the ACT LED winked and it saw my wireless USB keyboard.
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Re: Raspberry Pi 3 Model A+ details

Thu Nov 15, 2018 6:54 pm

DougieLawson wrote:
Thu Nov 15, 2018 3:30 pm
rst wrote:
Thu Nov 15, 2018 2:26 pm
I have updated my code - based on the RPi 3B+ - for the 3A+ for the moment. There's no hurry.
Is there anything I can run on either of my 3A+ Raspberries to test if your stuff works?
I thought the 3A+ is not available yet? Or am i wrong?
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Re: Raspberry Pi 3 Model A+ details

Thu Nov 15, 2018 7:15 pm

DougieLawson wrote:
Thu Nov 15, 2018 6:45 pm
That worked, the ACT LED winked and it saw my wireless USB keyboard.
That means, the Act LED of the RPi 3A+ is on GPIO 29 like on the 3B+ and the 3A+ is widely compatible with the 3B+. USB works in host mode like on the RPi 1A+ or RPi Zero. Thank you very much for testing!

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Re: Raspberry Pi 3 Model A+ details

Thu Nov 15, 2018 7:22 pm

DarkPlatinum wrote:
Thu Nov 15, 2018 6:54 pm
I thought the 3A+ is not available yet? Or am i wrong?
The RPF occasionally let Dougie have a trial version to keep him quiet :lol:

I wish I was so lucky ;)

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Re: Raspberry Pi 3 Model A+ details

Thu Nov 15, 2018 7:26 pm

rpdom wrote:
Thu Nov 15, 2018 7:22 pm
DarkPlatinum wrote:
Thu Nov 15, 2018 6:54 pm
I thought the 3A+ is not available yet? Or am i wrong?
The RPF occasionally let Dougie have a trial version to keep him quiet :lol:

I wish I was so lucky ;)
The folks who get early versions of hardware (under an NDA) have joined the "Raspberry Pi Fight club". You know the rule.
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Re: Raspberry Pi 3 Model A+ details

Thu Nov 15, 2018 7:59 pm

DougieLawson wrote:
Thu Nov 15, 2018 6:45 pm
That worked, the ACT LED winked and it saw my wireless USB keyboard.
Does this mean you could use a wireless keyboard and mouse without using the usb port for the dongle?

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Re: Raspberry Pi 3 Model A+ details

Thu Nov 15, 2018 8:11 pm

gordon77 wrote:
Thu Nov 15, 2018 7:59 pm
DougieLawson wrote:
Thu Nov 15, 2018 6:45 pm
That worked, the ACT LED winked and it saw my wireless USB keyboard.
Does this mean you could use a wireless keyboard and mouse without using the usb port for the dongle?
No. I plugged the kbd/mouse dongle into the one and only USB. Those things use a proprietary protocol (not BT, BTLE or WiFi).

18 out of 18 of my Raspberries run headless (no keyboard, no mouse). Five of them are often connected to a TV or my DVI monitor - because they happen to be in a room with a telly. I'll plug in a wireless kbd/mouse when needed. I've even got a flexible roll-up wired kbd.
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Re: Raspberry Pi 3 Model A+ details

Thu Nov 15, 2018 9:37 pm

rpdom wrote:
Thu Nov 15, 2018 7:22 pm
DarkPlatinum wrote:
Thu Nov 15, 2018 6:54 pm
I thought the 3A+ is not available yet? Or am i wrong?
The RPF occasionally let Dougie have a trial version to keep him quiet :lol:

I wish I was so lucky ;)
Raspberry Pi Fight Club, or alpha test team, get stuff for testing. Not sure if we need any more people on it right now - will investigate.
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Re: Raspberry Pi 3 Model A+ details

Fri Nov 16, 2018 6:39 am

jamesh wrote:
Thu Nov 15, 2018 9:37 pm
rpdom wrote:
Thu Nov 15, 2018 7:22 pm
The RPF occasionally let Dougie have a trial version to keep him quiet :lol:

I wish I was so lucky ;)
Raspberry Pi Fight Club, or alpha test team, get stuff for testing. Not sure if we need any more people on it right now - will investigate.
That would be cool, if possible (yes, I'm familiar with NDAs and the like), but understand you only need so many testers.

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Re: Raspberry Pi 3 Model A+ details

Fri Nov 16, 2018 10:16 am

rpdom wrote:
Thu Nov 15, 2018 7:22 pm
The RPF occasionally let Dougie have a trial version to keep him quiet :lol:

I wish I was so lucky ;)
Haha don't we all :)
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Re: Raspberry Pi 3 Model A+ details

Fri Nov 16, 2018 10:50 am

rpdom wrote:
Fri Nov 16, 2018 6:39 am
That would be cool, if possible (yes, I'm familiar with NDAs and the like), but understand you only need so many testers.
I'm sure you could make a case for testing with the more esoteric webs with which you apparently have expertise.
DSC_0013aaa.jpg
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Re: Raspberry Pi 3 Model A+ details

Fri Nov 16, 2018 11:00 am

rpdom wrote:
Fri Nov 16, 2018 6:39 am
jamesh wrote:
Thu Nov 15, 2018 9:37 pm
rpdom wrote:
Thu Nov 15, 2018 7:22 pm
The RPF occasionally let Dougie have a trial version to keep him quiet :lol:

I wish I was so lucky ;)
Raspberry Pi Fight Club, or alpha test team, get stuff for testing. Not sure if we need any more people on it right now - will investigate.
That would be cool, if possible (yes, I'm familiar with NDAs and the like), but understand you only need so many testers.
Can you email [email protected] and ask for mail to be forwarded to me please.
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Re: Raspberry Pi 3 Model A+ details

Fri Nov 16, 2018 11:23 am

gordon77 wrote:
Thu Nov 15, 2018 7:59 pm
Does this mean you could use a wireless keyboard and mouse without using the usb port for the dongle?
Technically, you could if it is Bluetooth.
The cheaper wireless keyboards tend to use their own protocol instead though (and generally speaking are a big fat security risk)

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