User avatar
AndrewS
Posts: 3625
Joined: Sun Apr 22, 2012 4:50 pm
Location: Cambridge, UK
Contact: Website

Re: Preliminary B+ HAT (Hardware Attached on Top) docs/specs

Tue Jul 29, 2014 12:27 am

panik wrote:That would mean I don't have to change anything.
Cool! :)
Exactly :D

Only thing you'll need to add will be to "enable UART" in config.txt (when the new firmware is released), but that's a one-time thing which you'll want to leave permanently enabled.

User avatar
panik
Posts: 369
Joined: Fri Sep 23, 2011 12:29 pm
Location: Netherlands

Re: Preliminary B+ HAT (Hardware Attached on Top) docs/specs

Wed Jul 30, 2014 1:55 pm

^ Fair enough :)

A few things and I'll get out of y'alls hair.
AndrewS wrote:
panik wrote:From http://elinux.org/RPi_config.txt
[...]
Nope, that documentation is wrong. The correct documentation is at http://www.raspberrypi.org/documentatio ... fig-txt.md
Currently, the last line of /boot/config.txt says:
# for more options see http://elinux.org/RPi_config.txt
That's how I got there. But thanks for the explanation (our posts crossed as well).

Also, minor typo in title of second paragraph: "Indroduction" in README.md for https://github.com/raspberrypi/hats

It really nice to have a spec. It gives us something to relate to. Thanks to all involved!
Microcontroller addon boards and software for Raspberry Pi A+/B+/Pi2:
- ARMinARM: ARM Cortex-M3 (STM32)
- AVRPi: ATmega32U4 & ATmega328 ("Arduino")
http://www.onandoffables.com

User avatar
AndrewS
Posts: 3625
Joined: Sun Apr 22, 2012 4:50 pm
Location: Cambridge, UK
Contact: Website

Re: Preliminary B+ HAT (Hardware Attached on Top) docs/specs

Wed Jul 30, 2014 3:00 pm

panik wrote:
AndrewS wrote:Nope, that documentation is wrong. The correct documentation is at http://www.raspberrypi.org/documentatio ... fig-txt.md
Currently, the last line of /boot/config.txt says:
# for more options see http://elinux.org/RPi_config.txt
That's a very good point! I've emailed asb (the Raspbian maintainer) to suggest it as a future change :)
Also, minor typo in title of second paragraph: "Indroduction" in README.md for https://github.com/raspberrypi/hats
Thanks https://github.com/raspberrypi/hats/pull/12

hifiberry
Posts: 12
Joined: Tue Aug 12, 2014 6:49 am

Re: Preliminary B+ HAT (Hardware Attached on Top) docs/specs

Sat Oct 04, 2014 7:44 pm

Any news on the Kernel development for HAT support? Auto-loading the right kernel modules would really help users and this should be possible with the data from the HAT EEPROM.

Best regards
Daniel

joabakk
Posts: 1
Joined: Tue Dec 16, 2014 8:07 am

Re: Preliminary B+ HAT (Hardware Attached on Top) docs/specs

Mon Jan 19, 2015 10:41 am

So if I understand this thread correctly, we can design the hats and program the eeproms, but there is no way of using the eeprom info in shell or scripts?
Excellent work so far, but I am eager to start testing. Does anyone have a timeline for when the next/final step will come?

ShiftPlusOne
Raspberry Pi Engineer & Forum Moderator
Raspberry Pi Engineer & Forum Moderator
Posts: 4603
Joined: Fri Jul 29, 2011 5:36 pm
Location: The unfashionable end of the western spiral arm of the Galaxy

Re: Preliminary B+ HAT (Hardware Attached on Top) docs/specs

Mon Jan 19, 2015 11:04 am

Device tree data can be accessed through /proc. I don't know if there's currently a way to read the vendor data and the other atoms, but there should be eventually.

Things are a bit busy with Astro-Pi and all that, so I think pulling a timeline out of nowhere would just disappoint people.


Return to “B+ addons”

Who is online

Users browsing this forum: No registered users and 2 guests