I have a device connected to the GPIO head pins 5 and 6 that by default is LOW (so pin 5 is grounded and pin 6 is RPi's ground and connected to the ground of the device). When I power on the RPi with this device connected, all the lights on the RPi turn on as normal (ethernet lights, power light, etc.) but I cannot connect to it via SSH.
When I connect the RPi via HDMI cable to a TV to see what is going on upon bootup I get nothing. No signal.
In order to connect to it I need to remove the GPIO connection, power on the RPi and then place the GPIO connector. What does the RPi do upon startup that causes this behavior? Has anyone else experienced something similar?
Re: Networking Not Working When PoweringUp with GPIO Connect
Bad choice of pin - Grounding Pin 5 causes the PI to boot into safe mode..
You are in a maze of twisty little passages, all alike.
When General Failure and Major Disaster get together, Private Parts usually suffers.
When General Failure and Major Disaster get together, Private Parts usually suffers.
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mahjongg
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Re: Networking Not Working When PoweringUp with GPIO Connect
yes, the GPIO header configuration is chosen so that there is a GND pin next to one of the few GPIO pins that has a built in pulp, and which is normally used in a way that makes it improbable that the signal is pulled low upon boot. In this way simply putting a jumper on the correct pins forces the PI to boot in safe mode. unluckily you have chosen just that GPIO pin for your setup.
Re: Networking Not Working When PoweringUp with GPIO Connect
How is it that you guys know this? Where is this information? Can I use pin 8 then?
Re: Networking Not Working When PoweringUp with GPIO Connect
NOooooooo! That's either Enable_Alternate_Reality or Dispense_One_Gumball.....
http://elinux.org/RPI_safe_mode
http://elinux.org/RPI_safe_mode
You are in a maze of twisty little passages, all alike.
When General Failure and Major Disaster get together, Private Parts usually suffers.
When General Failure and Major Disaster get together, Private Parts usually suffers.
Re: Networking Not Working When PoweringUp with GPIO Connect
Better to use pin 11 (to pin 9) as that isn't used for anything else by default. Pin 7 is connected to the UART and will be used for the (optional) serial console, if one is connected.hugoender wrote:How is it that you guys know this? Where is this information? Can I use pin 8 then?
Re: Networking Not Working When PoweringUp with GPIO Connect
Noooooooooo! It isn't! It's Activate_Self_Destruct! Try itMaxK1 wrote:NOooooooo! That's either Enable_Alternate_Reality or Dispense_One_Gumball.....
http://elinux.org/RPI_safe_mode
I dare you...Code: Select all
int main() {
try
throw "off table";
} catch (void e) {
printf("Phew...");
}
}