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by nana199685
Mon Jan 14, 2019 3:58 am
Forum: Beginners
Topic: ttyAMA0
Replies: 0
Views: 99

ttyAMA0

My raspberry pi is 2 Model B I want to use raspberry pi to store the data from detector with uart, so I want to test my raspberry pi before connect the detector. I connected the Rx and Tx pin (8 and 10), and run the code below: import wiringpi as wiringpi import time wiringpi.wiringPiSetup() serial ...
by nana199685
Fri Dec 14, 2018 11:55 am
Forum: Linux Kernel
Topic: Boot hang after "random: crng init done"
Replies: 13
Views: 30243

Re: Boot hang after "random: crng init done"

At boot, the kernel waits for mouse movements to initialize the random number generator. Kernel messages on boot: sudo dmesg | less The problem: kernel: random: crng init done The solution: sudo apt install haveged sudo systemctl enable haveged i meet the same problem that the screen stop at "rando...
by nana199685
Wed Dec 12, 2018 6:11 am
Forum: Beginners
Topic: gps on raspberry pi
Replies: 6
Views: 280

Re: gps on raspberry pi

hello~ I am the questioner.(the gps is used uart bridge) I have tried the method everyone proposed but gpsmon and cgps still didn't work. So I reinstall them clearly(by remove autoremove and purge) finally gpsmon and cgps can work but the data didn't come out. gpsmon: tcp://localhost:2947 JSON slave...
by nana199685
Tue Dec 11, 2018 11:32 am
Forum: Beginners
Topic: gps on raspberry pi
Replies: 6
Views: 280

gps on raspberry pi

i have connect to gps recevier (I can find the GPS information in ttyUSB0, which is shown below) $GPVTG,291.5,T,,M,000.0,N,000.0,K,A*02 $GPGGA,112606.498,2259.8145,N,12013.1447,E,1,08,0.9,40.3,M,19.1,M,,0000*67 $GPGSA,A,3,32,26,29,31,16,14,22,03,,,,,1.6,0.9,1.3*33 $GPGSV,3,1,12,16,59,294,21,26,58,35...

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