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Hi
I bought a GPSberry, i followed the process (disable console, enable serial) .Plug the GPSBerry on my PI4
But nothing is working and i am lost.
root@raspberrypi:~# dmesg| grep tty
[ 0.000000] Kernel command line: coherent_pool=1M 8250.nr_uarts=1 cma=64M cma=256M video=Composite-1:720×480@60,margin_left=32,margin_right=32,margin_top=32,margin_bottom=32 smsc95xx.macaddr=DC:A6:32:68:5A:AF vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000 console=tty1 root=PARTUUID=97709164-02 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait quiet splash plymouth.ignore-serial-consoles
[ 0.000261] console [tty1] enabled
[ 0.422236] fe201000.serial: ttyAMA0 at MMIO 0xfe201000 (irq = 34, base_baud = 0) is a PL011 rev2
[ 0.427503] fe215040.serial: ttyS0 at MMIO 0x0 (irq = 36, base_baud = 62500000) is a 16550
[ 1.945067] systemd[1]: Created slice system-getty.slice.
root@raspberrypi:~# ls -l /dev/serial*
lrwxrwxrwx 1 root root 5 févr. 28 21:25 /dev/serial0 -> ttyS0
lrwxrwxrwx 1 root root 7 févr. 28 21:25 /dev/serial1 -> ttyAMA0How to be sure that my GPSBerry is working ?
# cgps
lqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqklqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqk
x Time: n/a xxPRN: Elev: Azim: SNR: Used: x
x Latitude: n/a xx x
x Longitude: n/a xx x
x Altitude: n/a xx x
x Speed: n/a xx x
x Heading: n/a xx x
x Climb: n/a xx x
x Status: NO FIX (3 secs) xx x
x Longitude Err: n/a xx x
x Latitude Err: n/a xx x
x Altitude Err: n/a xx x
x Course Err: n/a xx x
x Speed Err: n/a xx x
x Time offset: n/a xx x
x Grid Square: n/a xx x
mqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqjmqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqj
{“class”:”VERSION”,”release”:”3.17″,”rev”:”3.17″,”proto_major”:3,”proto_minor”:12}“:9600,”parity”:”N”,”stopbits”:1,”cycle”:1.00}]}
{“class”:”WATCH”,”enable”:true,”json”:true,”nmea”:false,”raw”:0,”scaled”:false,”timing”:false,”split24″:false,”pps”:false}Please help
Thanks in advance
Have you followed everything on this page?
https://ozzmaker.com/berrygps-setup-guide-raspberry-pi/
Do you see any data when using;
cat /dev/serial0
or
minicom -b 9600 -o -D /dev/serial0Mark --OzzMaker.com --
usually when you get garbage , it means that the speed on the serial port is incorrect.
what is the output of, the below command;
stty -F /dev/serial0Can you also please make sure you are running the latest firmware as when the Pi 4 first came out, there was issues with the serial speed, which was later fixed.
Mark --OzzMaker.com --
We should try two more things.
Can you do a loopback test of your serial port?
If you have a jumper wire, connect TX and RX together. Then start minicom.
minicom -b 9600 -o -D /dev/serial0+Do you see extra characters in minicom?
+When you type within minicom, do you see the characters you type?finally, can you upload a close up photo here of the header and gps part of the BerryGPS-IMU.
Mark --OzzMaker.com --
Hi ,
I stopped the pi, disconnect GPSBerry, put a wire loopback between Tx and Rx
Started pi, do minicom -b 9600 -o -D /dev/serial0
No i don’t see extra characters in minicom
Yes, when i typed within minicom, i can see the characters i typed.please find also a close up photo here of the header and gps part of the BerryGPS-IMU.
Best Regards
Attachments:
Mmmmm… everything looks correct.
Last test, please try connecting at 115200
minicom -b 115200 -o -D /dev/serial0Pleas forward your receipt of purchase to sales < @ > ozzmaker.com as we may need to send you a new unit.
Mark --OzzMaker.com --
no, have the BerryGPS plug in. I just want to check to see if for some reason, it is using the speed of 115200. Default, it should be 9600.
Also, what is that extra PCB on the bottom for? does it use the Serial port also? have you tried without it connected?Mark --OzzMaker.com --
nevermind about sending an email to sales.
If you purchased from Amazon, best to contact them directly… stating that you received a faulty unit.Mark --OzzMaker.com --
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