321
Posts: 94
Joined: Mon Feb 13, 2017 7:26 pm

[solved] PINN & RISCOS hw settings

Tue Mar 07, 2017 8:19 pm

# PINN Auto-generated Settings:
hdmi_force_hotplug=1
enable_uart=0
core_freq=500
sdram_freq=500
over_voltage=2
I noticed that PINN adds the above in config.txt for a pi2 and the above varies depending on the type of pi PINN has been run on.

As it looks like PINN (& possibly Noobs) is a RISCOS production, does RISCOS need fixed hw settings
core_freq=500
sdram_freq=500
over_voltage=2
for it to run in a stable fashion?
Last edited by 321 on Thu Mar 09, 2017 11:54 am, edited 1 time in total.

procount
Posts: 839
Joined: Thu Jun 27, 2013 12:32 pm
Location: UK

Re: PINN & RISCOS hw settings

Tue Mar 07, 2017 11:22 pm

PINN and NOOBS only write the display options, according to how you set them within NOOBS/PINN.
The settings beneath "hdmi_force_hotplug=1" are not generated by NOOBS/PINN, so those changes are from somewhere else (RISCOS maybe?)

NOOBS/PINN are not RISCOS productions.
PINN - NOOBS with the extras... https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=142574

dfeugey
Posts: 107
Joined: Mon Nov 03, 2014 2:38 pm
Location: France
Contact: Website

Re: PINN & RISCOS hw settings

Wed Mar 08, 2017 6:38 am

You can overclock your Pi if you want... but this is not required by RISC OS.
RISC OS FR - All RISC OS, in french (but not only)
http://www.riscos.fr/

321
Posts: 94
Joined: Mon Feb 13, 2017 7:26 pm

Re: PINN & RISCOS hw settings

Wed Mar 08, 2017 8:13 pm

I have been trying to overclock my pi's but they dont seem to work when I've got PINN installed.

A quick example being something like

Code: Select all

gpu_mem=16
dtparam=i2c_arm=on
dtparam=spi=off
device_tree=
hdmi_force_hotplug=1
gpu_mem_256=16
gpu_mem_512=16
gpu_mem_1024=16

arm_freq_min=300
arm_freq=1000
core_freq_min=200
core_freq=500
sdram_freq_min=100
sdram_freq=600
over_voltage_min=0
over_voltage=8
temp_limit=85
force_turbo=0
appended to the end of the config.txt.

Even something like

Code: Select all

gpu_mem=16
dtparam=i2c_arm=on
dtparam=spi=off
device_tree=
hdmi_force_hotplug=1
gpu_mem_256=16
gpu_mem_512=16
gpu_mem_1024=16
would stop raspbian booting up, but PINN seems to work properly, hence this question.

I'll double check these settings work on the lastest raspbian as thats something PINN will do as these settings have worked with older versions of raspbian in the paste, as its what I've printed off from previous scripts.

procount
Posts: 839
Joined: Thu Jun 27, 2013 12:32 pm
Location: UK

Re: PINN & RISCOS hw settings

Wed Mar 08, 2017 9:01 pm

I'm not sure why PINN would have any effect on overclocking at all.
PINN - NOOBS with the extras... https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=142574

321
Posts: 94
Joined: Mon Feb 13, 2017 7:26 pm

Re: PINN & RISCOS hw settings

Wed Mar 08, 2017 11:58 pm

I'm not either tbh, but I'm copying some printed scripts I've used on wheezy onto this new setup, so its a process of elimination at the moment.

Best way to catch things out, is do what is not normally expected, like double natting some firewalls to see what only ISP's/spooks would see. In a way this is why PINN is so interesting, hopefully in time it might be possible to get it working in a way to fully automate testing of systems/apps on the pi's.

Your Github avatar is similar to those used by GCHQ bods, coincedence?
https://github.com/GovernmentCommunicat ... dquarters/
https://github.com/procount

321
Posts: 94
Joined: Mon Feb 13, 2017 7:26 pm

Re: PINN & RISCOS hw settings [solved]

Thu Mar 09, 2017 10:41 am

It doesnt like

Code: Select all

device_tree=
so there must have been change made at some point.

iirc this worked on Wheezy so that might explain it.

procount
Posts: 839
Joined: Thu Jun 27, 2013 12:32 pm
Location: UK

Re: PINN & RISCOS hw settings

Thu Mar 09, 2017 10:47 am

devicetree is the new way to describe all the hardware to the kernel so that the correct drivers are loaded. I think it replaces ATAGS. it came in around Jessie.
Not surprised it won't work if you disable device tree.
PINN - NOOBS with the extras... https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=142574

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