[arm-allstar] USB GPS Cannot open serial port /dev/ttyS0

[PD1ASH .]

Hi all,

Question regarding USB GPS.


I would like to experiment with an external USB GPS receiver.  (u-blox 7 -
GPS/GNSS Receiver)

My AST log gives me this error: WARNING[436] app_gps.c: Cannot open serial
port /dev/ttyS0


Does anyone have any thoughts.  I believe this has to do something with
access rights, but i'm not sure.  I'm not a Arch Linux script writer hi.



GPS.conf and Modules.conf have been changed to show the fixed (default)
position on APRS.fi.





GPS.conf file


interval = 600 ; Beacon interval in seconds
icon = -  ; A CAR (default)   Icon do be displayed for station on APRS
display (see below)
comport = /dev/ttyS0  ; Serial port for GPS receiver (specify this only if
using GPS receiver)
baudrate = 4800  ; Baud rate for GPS receiver (specify this only if using
GPS receiver)
;debug = y ; set this for debug output
lat=53.152645 ; Fixed (default) latitude in decimal degrees
lon=6.320687 ; Fixed (default) longitude in decimal degrees





In Modules.conf i have changed noload to load.



load => app_gps.so ;    GPS interface module


The USB GPS green led is blinking when it is getting a fixed signal. But
APRS.FI is not getting the USB GPS coordinates.

Website APRS.FI is showing the fixed default coordinates that i have
entered in GPS.conf.     Even when i change the default fixed coordinates
in gps.conf  to a place like in Africa, the USB GPS is not working
properly.


Anyone have had this conflict before.
The Pi is seeing the USB adapter on Bus 001 Device 005: ID 1546:01a7 U-Blox
AG.







dmesg | grep tty


[    0.000000] Kernel command line: coherent_pool=1M 8250.nr_uarts=0
bcm2708_fb.                     fbwidth=640 bcm2708_fb.fbheight=480
bcm2708_fb.fbswap=1 vc_mem.mem_base=0x3ec000                     00
vc_mem.mem_size=0x40000000  root=/dev/mmcblk0p2 rw rootwait
console=ttyS0,115                     200 console=tty1 selinux=0
plymouth.enable=0 smsc95xx.turbo_mode=N dwc_otg.lpm_e
 nable=0 kgdboc=ttyS0,115200 elevator=noop audit=0
[    0.001004] console [tty1] enabled
[    4.473861] 3f201000.serial: ttyAMA0 at MMIO 0x3f201000 (irq = 81,
base_baud                      = 0) is a PL011 rev2
[    7.046591] cdc_acm 1-1.2:1.0: ttyACM0: USB ACM device
[root at AllStar boot]#


lsusb

Bus 001 Device 004: ID 0d8c:0012 C-Media Electronics, Inc.
Bus 001 Device 005: ID 1546:01a7 U-Blox AG
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514
Fast Ethernet Adapter
Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp. SMC9514 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub




Rolf,

PD1ASH