ntpclient | NTP client. - | Date Time Utils library
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kandi X-RAY | ntpclient Summary
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QUESTION
I have developed a password verification system using Arduino Nano+ESP8266 (FrontEnd) and Backend with Flask REST API server.
Following is my code of ESP8266, Which is passing the HTTP POST request to REST API server,
...ANSWER
Answered 2021-Sep-29 at 13:51The error TypeError: argument of type 'NoneType' is not iterable
means that your data = request.get_json()
return a None
. The reason why it return a None
can be found in falsk.Request.get_json API documentation. It said:
By default this function will return None if the mimetype is not application/json
Take a look at your Arduino code, you add extra spaces on the http header:
QUESTION
I am organizing a race, and I need a system to scan the bibs of the runners at their arrival. My barcode scanner behave similarly to a keyboard: when I scan something I have a string, in my case name, surname and bib number. So I need a counter that starts when the race starts and I need recording the time of each runner. I tried to use datetime.datetime and time.perf_counter, but the values I get are wrong (I put both and ntp for comparison, I need just one)
...ANSWER
Answered 2021-Apr-25 at 17:05Calculating elapsed time right after the user input will fix your issue.
QUESTION
I'm trying to send the sensor readings to the firebase realtime database. it's working fine but the problem that suddenly the data not stored in order. For example, as shown below.. the data of hour 10 stored below hour 1 instead of complete storing below hour 9. (bounded with *** for clarification purposes)
...ANSWER
Answered 2021-Feb-11 at 17:37This issue is because it's sorted as a string.
If your data is 1, 2, 3, 10, it will be ordered 1, 10, 2, 3 because the string 10, comes before the string of 2
So change how the data is stored; either as a Timestamp, convert to double or it must be a string use yyyymmddhhmmss
So this "2021-2-9 10:0:0" would be
QUESTION
Consider the code below:
...ANSWER
Answered 2021-Jan-05 at 14:53IMHO, the approach is straight forward:
- Get the NTP time (I'll call it
now
) - Define the time you want to run the code (
runat
) - Calculate the difference
- Sleep for that time
- Do whatever you want at that time
Note that asking NTP servers for the time will itself take some time. So if you print the NTP time as part of the step 5, it will always appear late. I'll use the local time to compensate for that in the code below.
QUESTION
I'm getting an exception (see below) when I try to use NTPClient in my custom class RealTimeService. Please advise why and how to fix it. Thank you.
File RealTimeService.h:
...ANSWER
Answered 2020-Sep-20 at 23:27You define udp
in RealTimeService::_createNtpClient()
and pass it to NTPClient
. NTPClient
will continue to need it after RealTimeService::_createNtpClient()
returns, but udp
will become invalid. Even if NTPClient
copies it, its destructor is called, invalidating the resources it used.
You need to change udp
to be an instance variable so that it will survive as long as _ntp
does.
QUESTION
Using the below code its possible to update the start up policy of ntpd service in an ESXi server,
...ANSWER
Answered 2020-Jul-16 at 04:06host.configManager.firewallSystem.EnableRuleset(id='ntpClient')
QUESTION
I'm trying to display the readings from a DHT11 onto an LED Matrix. I can get the basic display to work, the issue is when I also put the time on the display. I started with the Morphing Clock as a base for the time then used the Adafruit Sensor code to read the DHT11. The issue seems to be with"
...ANSWER
Answered 2020-Apr-03 at 19:21You could try to assign tasks explicitly to a core.
When you start playing with ESP32 multi core code execution be aware of the following issues:
- Both the setup and the main loop functions execute with a priority of 1.
- Arduino main loop runs on core 1.
- The execution is pinned, so it’s not expected that the core will change during execution of the program
- On FreeRTOS (the underlying OS), tasks have an assigned priority which the scheduler uses to decide which task will run.
- High priority tasks ready to run will have preference over lower priority tasks, which means that as long as a higher priority task can run, a lower priority task will not have the CPU.
- CAUTION shared resources like Serial might be potential issues. Due to two core tasks accessing uncoordinated the same hardware may lead to deadlocks and crashes
For implementation purposes, you need to take in consideration that FreeRTOS priorities are assigned from 0 to N, where lower numbers correspond to lower priorities. So, the lowest priority is 0.
First of all, declare a global variable that will contain the number of the core where the FreeRTOS task to launch will be pinned
QUESTION
fairly new to PyQt
and Python in general. I am having trouble applying a click event to a button in PyQt5
. I am trying to add functionality to all the buttons I have, although it seems I am missing some initial setup to allow it to work. Looking through the documentation...
ANSWER
Answered 2020-Jan-14 at 07:49I think it may be because your input is incorrect, an example piece:
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