Steve,
I assume that you received my payment? I sent it the day that you
advised everyone of the total
Thanks.
Fred
On 5/21/2017 3:42 PM, Steve - Home wrote:
Jerry is making rapid progress with the machine work on the end plates and
should be contacting those who have paid to provide you
You shouldn’t have to enlarge the holes. I trial-fit the lenses from the unit
I received in the holes that I drilled to specifications in the document at
approximately .28”. The lenses add a professional look to the front plate.
Jerry
> On May 21, 2017, at 3:42 PM, Steve - Home
Hi,
Here's an interesting addition to the project once you get the serial
parser and display driver worked out. It is quite easy to generate the
$GPZDA NMEA message in your program. You can send this off to a Raspberry
Pi or BBB along with the PPS signal and drive an NTP server. :)
[image:
On 5/21/17 11:20 AM, Chris Albertson wrote:
The problem is that you get the ENTIRE string then parse it. This is
not going to work well as you found out. Your CPU spends almost the
entire time waiting for characters to come in slowly off the serial
line. You are just waiting on bits and
Jerry is making rapid progress with the machine work on the end plates and
should be contacting those who have paid to provide you with the follow on
postage cost.
After going through the weekend mail and a PayPal update today, there are still
10 people who haven't paid. That represents 40
The root of the problem is that he is doing all the parking at once
and ignoring inputs from both the serial line and the 1PPS
Even if the iPPS were connected to an interrupt (and it should be) he
is still busy parking input when the ISR sets the flag.
He needs to read the data fro the serial
But what if Tal Avda is in Arizona
On 2017-05-21 14:50, Gregory Maxwell wrote:
Found on the web:
http://slatestarcodex.com/2013/11/03/the-witching-hour/
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
Found on the web:
http://slatestarcodex.com/2013/11/03/the-witching-hour/
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
The 1PPS pulse is very narrow. You will miss it if it comes in while parsing a
time message. You need to set up an interrupt handler to that triggers on the
rising edge of the pulse and sets a flag (which must be declared "volatile").
Check that flag in your loop() instead of waiting for a
Sorry, I may have over-simplified. You sketch might look something like
this, assuming the PPS is connected to pin D2 and the rising edge makes the
second:
volatile boolean PPS_ReadFlag = false;
void setup () {
...
attachInterrupt(digitalPinToInterrupt(2), serviceRoutine, RISING);
...
}
Another way to do is to use the 1 PPS to trigger an interrupt on the
Arduino. Look at the documentation for attachInterrupt(). In the interrupt
routine, have it set a flag. The flag variable should be declared up front
as volatile.
Then in your main loop, do all your parsing then loop waiting for
Possible typo?
UpdateDisplay()
greg
===
void loop()
{
getSerialString() // uses serial.available to pull in the serial data
parser() // this parses the data
wait for 1PPS tick to go high
if there has been a clock message, updateDispay() // update the display
}
===
Sent from iPad Air
To add to my last message.
You CAN collect all the data then parse it like you are doing if you
were to move to an interrupt driven serial port reader. Each
character is then read by the interrupt handler anyplace in a large
circular buffer. The parcer then reads out of the other and of this
The problem is that you get the ENTIRE string then parse it. This is
not going to work well as you found out. Your CPU spends almost the
entire time waiting for characters to come in slowly off the serial
line. You are just waiting on bits and wasting CPU cycles
What you need to do is parse
Good morning all,
A quick update for those interested on my Arduino code development for
the TruePosition boards. I've got Arduino code together than can read
in the serial stream, parse it, and display time, date, number of
satellites, and TFOM on a 2x16 LCD display. It does not do
15 matches
Mail list logo
