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by Nuncio
Fri Aug 02, 2019 10:57 am
Forum: General discussion
Topic: Meaningless boot problem
Replies: 15
Views: 1177

Re: Meaningless boot problem

Just my 0.02p...
I've also noticed that having the HDMI cable connected to a powered-on monitor can actually supply some power to the RPi board, preventing it from shutting down completely.
If you really want to power down, run 'shutdown' first, disconnect HDMI, *then* unplug the RPi
by Nuncio
Fri Aug 02, 2019 10:18 am
Forum: General discussion
Topic: 4gb - 4B Demand must be high.
Replies: 134
Views: 14965

Re: 4gb - 4B Demand must be high.

I ordered mine Sat July 27 and just got it yesterday 1 Aug
From CanaKit
by Nuncio
Fri Aug 02, 2019 10:16 am
Forum: General discussion
Topic: /proc/cpuinfo on the raspberry pi 4
Replies: 11
Views: 3723

Re: /proc/cpuinfo on the raspberry pi 4

This is what my cpuinfo shows. I could swear the ARM A72 was supposed to be ARMv8, but I could be wrong. Also I thought it was Broadcom BCM2711. I've heard the RPi manufacturers can't change this without a lot of hassle, though. pi@raspberrypi4:~ $ cat /proc/cpuinfo processor : 0 model name : ARMv7 ...
by Nuncio
Sun Mar 13, 2016 5:32 pm
Forum: General discussion
Topic: Bluetooth not working
Replies: 2
Views: 619

Re: Bluetooth not working

<facepalm>
Thanks. I really should have known to try that.
by Nuncio
Sun Mar 13, 2016 5:22 pm
Forum: General discussion
Topic: Bluetooth not working
Replies: 2
Views: 619

Bluetooth not working

I've been reading that there's a bluetoothctl command on the Raspberry Pi 3 to be able to control Bluetooth. When I type bluetoothctl, I get a prompt "[bluetooth]#" and that's it. Nothing happens after that. It doesn't accept input, and all I can do to get the system to respond after that is Ctl-C. ...
by Nuncio
Wed May 08, 2013 11:42 am
Forum: Troubleshooting
Topic: GPIO hangs CPU
Replies: 12
Views: 3582

Re: GPIO hangs CPU

Thanks for pointing that out after the fact!
by Nuncio
Tue May 07, 2013 8:59 pm
Forum: Troubleshooting
Topic: GPIO hangs CPU
Replies: 12
Views: 3582

Re: GPIO hangs CPU

After resetting the board and retrying a couple previous tests, I'm finding it's not a hardware problem. I can definitely poll the GPIO using bcm2835_gpio_lev() and it gets the right value immediately. I can set the GPIO as pull up or down (with hardware connected the right way). There seems to be a...
by Nuncio
Tue May 07, 2013 9:34 am
Forum: Troubleshooting
Topic: GPIO hangs CPU
Replies: 12
Views: 3582

Re: GPIO hangs CPU

I should have mentioned - I'm using the bcm2835-1.25 library to control the RPi.
I'll have to try making some code to just pull down the GPIO as an output and see what happens when I have a bit of time this afternoon...
by Nuncio
Mon May 06, 2013 9:30 pm
Forum: Troubleshooting
Topic: GPIO hangs CPU
Replies: 12
Views: 3582

Re: GPIO hangs CPU

I don't even need code running. Connecting any GPIO to ground stops the processor. Doesn't matter what GPIO. As long as it's set up as an input. I've seen this on two different boards now.
by Nuncio
Sun May 05, 2013 10:33 pm
Forum: Troubleshooting
Topic: GPIO hangs CPU
Replies: 12
Views: 3582

Re: GPIO hangs CPU

Which gpio pin are you using? Could you indicate what is connected to what? It doesn't seem to matter which GPIO. I'm using P1-15 (GPIO22) at the moment. I'm finding I can't actually bring the GPIO to ground. If I bring it down around 1V I'm seeing better operation, although occasionally I'm seeing...
by Nuncio
Sun May 05, 2013 8:41 pm
Forum: Troubleshooting
Topic: GPIO hangs CPU
Replies: 12
Views: 3582

GPIO hangs CPU

I've just started experimenting with my RPi and I'm finding some odd behavior. Going by lots of examples I'm reading about, I'm attaching a switch to a GPIO pin. In my code I set up the GPIO as an input pulled high. Whenever I press the button (bringing the GPIO input to ground), the processor hangs...

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