RE: Adafruit USB and PPS

Hello all,

With a lack of any suggestions today I took a look at the cp210x driver. It appears to have RI support, and also appears to have had changes over the last couple of years, so I decided to update everything to the latest version (apt update; apt full-upgrade). While the upgrade was successful, it has had no effect on PPS working. L

Is there anything needed to tell PPS to use RI as opposed to DCD? It appears not, but I thought I had best ask just in case.

Any suggestions on getting PPS going would be appreciated.

Regards,

Neal

From: Neal Dillman
Sent: Saturday, November 30, 2019 11:53 PM
To: Gary E. Miller <address@hidden>; address@hidden
Subject: RE: Adafruit USB and PPS

Hello again,

Checking if compiler accepts -pthread... (cached) no

Looks like you forgot the clean before building (cached).

Please clean do "scons --clean" before rebuilding, and then send that output.

I should note that gpsd is “my first rodeo” with scons.

At any rate, Tried scons –clean (previously had tried scons -c for the same purpose and thought perhaps –clean would be different). However the output still contained "Checking if compiler accepts -pthread... (cached) no".

Then I saw this little tidbit in the output...

You must manually remove .sconsign.dblite

So I did. Clean output. One little victory. Not sure where the FAQ or Wiki is, but I would be pleased to add that one where appropriate.

The output was no better, though that is probably as expected:

# ./gpsd -D 5 -N -n /dev/ttyUSB0 |& fgrep PPS

gpsd:PROG: PPS:/dev/ttyUSB0 chrony socket /var/run/chrony.ttyUSB0.sock doesn't exist

gpsd:PROG: KPPS:/dev/ttyUSB0 checking /sys/devices/virtual/pps/pps0/path, /dev/ttyUSB0

gpsd:INFO: KPPS:/dev/ttyUSB0 RFC2783 path:/dev/pps0, fd is 6

gpsd:INFO: KPPS:/dev/ttyUSB0 pps_caps 0x1133

gpsd:INFO: KPPS:/dev/ttyUSB0 have PPS_CANWAIT

gpsd:INFO: KPPS:/dev/ttyUSB0 kernel PPS will be used

gpsd:PROG: PPS:/dev/ttyUSB0 thread launched

gpsd:INFO: PPS:/dev/ttyUSB0 ntpshm_link_activate: 1

gpsd:INFO: KPPS:/dev/ttyUSB0 kernel PPS timeout unknown error

gpsd:WARN: PPS:/dev/ttyUSB0 unchanged state, ppsmonitor sleeps 10

gpsd:INFO: KPPS:/dev/ttyUSB0 kernel PPS timeout unknown error

etc, etc.

> [ 3.059982] usb 1-1.2: cp210x converter now attached to ttyUSB0

The cp210x not the best, but usually OK.

I’ll take that as good news. Unfortunately, while I have a clean compile (with timeservice turned on no less), it appears the device is not cooperating. It feels like some kind of kernel issue, though everything appears to be in place. And I am unfortunately back to asking for which tree to bark up K.

Regards,

Neal

From:	Neal Dillman
Subject:	RE: Adafruit USB and PPS
Date:	Tue, 3 Dec 2019 06:03:45 +0000