Hello Nick,
Thank you. Good to know that it works for someone. And you're also using
a NEO-7M, right?
/dev/ttyACM0, is that an usb-to-serial converter? I'm using /dev/AMA0,
which is the TXD/RXD pins on the GPIO port. So i just need to use 4
wires and connect the module to the Raspi...
I could try to use the usb-to-serial adapter connected to the Raspi but
that is a rather uncomfortable work-arround and even more power consuming...
...would like to try to transmit EbNaut on 137 kHz directly from such a
module.
73, Stefan
Am 31.01.2019 18:04, schrieb Nick:
On 31/01/2019 15:22, DK7FC wrote:
Hello dear GPS experts,
I'm still struggling with my NEO-7M and vlfrx-tools. Instead of the
standard ucenter software i use my Raspi and vlfrx-tools to configure
the module. Using the vtubx
<http://abelian.org/vlfrx-tools/notes.html#vtubx> tool, i can configure
the time pulse as expected, for example
*vtubx -P 1e-1 -S /dev/ttyAMA0*
leads to a blinking LED with 100 ms on-time. So the communication works
fine.
However,with
*vtubx -F 10 -S /dev/ttyAMA0* or *vtubx -F 1,10e1 -vv -S /dev/ttyAMA0*
the LED gets and stays dark, i.e. no frequency output.
Now i tried to use the old u-center software and there i can configure
the TP output as expected to a frequency of say 20 Hz and there the LED
is indeed blinking.
Does someone have tried to use vtubx and have some experience? What am i
doing wrong?
73, Stefan
Stephan,
Here on a Centos box (yes I know ...) it all works as expected (after I
got the dependencies resolved)
vtubx -F 10 -S /dev/ttyACM0 gives a nice fast flash rate of the LED
vtubx -F 1 -S /dev/ttyACM0 puts it back ...
Regards
Nick
M0HGU
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