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by donis
Fri Nov 22, 2013 5:47 pm
Forum: Troubleshooting
Topic: GPIO Pings re-assigment?
Replies: 9
Views: 1728

Re: GPIO Pings re-assigment?

Folks, The issue was resolved by getting a different GPS receiver: "Ultimate GPS breakout" from Adafruit industries. The problem with my previous GPS is that it was putting out a negative voltage output and this wasn't within the bounds accepted by the GPIO UART. Thanks a lot for your ideas and supp...
by donis
Fri Nov 22, 2013 5:35 pm
Forum: Troubleshooting
Topic: Rpi as NTP server Can't query ntpq -p
Replies: 1
Views: 1076

Rpi as NTP server Can't query ntpq -p

Folks, I configured a Raspberry Pi B rev2 as NTP server with PGS receiver and configured "ntp.conf" adding GPS and PPS and some LAN servers as my ntp time sources. My final "ntp.conf" file will list only the gps receiver as the source and my raspberry pi will have no connection to the internet. The ...
by donis
Sat Nov 16, 2013 1:26 pm
Forum: Troubleshooting
Topic: GPIO Pings re-assigment?
Replies: 9
Views: 1728

Re: GPIO Pings re-assigment?

All the gpios on the Pi are 3.3V. What voltage does your GPS unit use? Use stty -F /dev/ttyAMA0 4800 to set the default GPS baud rate. Change the 4800 if your unit uses a different value. Try cat /dev/ttyAMA0 >>I tried sty -F /dev/ttyAMA0 9600 (value used by the unit) but then cat "dev/ttyAMA0" sho...
by donis
Sat Nov 16, 2013 1:14 pm
Forum: Troubleshooting
Topic: GPIO Pings re-assigment?
Replies: 9
Views: 1728

Re: GPIO Pings re-assigment?

What external hardware are you using to convert from the (presumed) rs232 serial output from the gpsr or laptop? (Just because the GPIO pins are labelled for use as a serial uart does not automagically convert the signal levels as well. 'Standard' rs232 serial comms do not use ttl [for the RPi, 0.0...
by donis
Fri Nov 15, 2013 6:42 pm
Forum: Troubleshooting
Topic: GPIO Pings re-assigment?
Replies: 9
Views: 1728

GPIO Pings re-assigment?

Hello folks, I have been using a Raspberry Pi B rev 2. I need to read data continuously on GPIO 15 (pin # 10, UART RXD) and have verified that no data is received. Data is to be supplied by a gps receiver. Set up a serial connection (hyper terminal on a laptop and minicom on the Rpi). I ran a minico...

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