Blox | music production application and community | Music Player library

So, Ruby. Ruby is great. Buuuut, its graphic library choices aren't that good. Python, I've heard, is all around excellent ... and I mostly agree, I've used it before! But can you do this

First off I am sorry if this question has been asked before, I tried other similar questions and the answers didn't help me.

I am using fetch() to grab a UTF-8 encoded file, but my response.text() keeps returning undefined. I have tested it in Postman and it returns the encoded data no problem.

Sample Code:

I am trying to connect to a virtual com port provided by the drivers of a u-blox GPS device.

The device appears normally under the Sensors tab in Device Manager and I can really get the coordinate data using GeoCoordinateWatcher class from C#.

But I want to read the underlying NMEA data. So in the process of doing that I installed the Virtual Com Port driver provided by U-BLOX and it generated a u-blox virta com port in devices manager.

Connecting to that using Putty is OK and I can see all the NMEA lines being dumped there.

but when I try to connect to the same port (after Putty is closed obviously) using C# I get the exception mentioned in the title

The given port name does not start with COM/com or does not resolve to a valid serial port

My code is fairly simple (not the first time I use com ports) and everything is correctly defined (Port Name, Stop Bits, Parity, BaudRate etc). I even tried changing to a "wrong" com port name to see the exception I will get and it is completely different (Com Port does not a exit exception).

So what is happening with C# at this point? Am I doing something wrong? Is this a bug in the SerialPort class? Putty seems to work just fine in connecting and streaming the data. My code is as simple as the following

CONTEXT I'm using a code written to work with a GPS module that connects to the Arduino through serial communication. The module starts each packet with a header (0xb5, 0x62), continues with the information you requested and ends with to bytes of checksum, CK_A, and CK_B. I don't understand the code that calculates that checksum. More info about the algorithm of checksum (8-Bit Fletcher Algorithm) in the module protocol (https://www.u-blox.com/sites/default/files/products/documents/u-blox7-V14_ReceiverDescriptionProtocolSpec_%28GPS.G7-SW-12001%29_Public.pdf), page 74 (87 with index).

MORE INFO Just wanted to understand the code, it works fine. In the UBX protocol, I mentioned there is also a piece of code that explains how it works (isn't write in c++)

Setup: Linux host running a slightly modified version of the LwiP test example code. PPPoS to uBlux W132 Wifi module Wifi module attached to home network with internet access

Problem: I cannot open a TCP socket to echo.u-blox.com. The error is always "No Route To Host". I think the problem is my limited understanding of networking! I believe that LwIP, PPP and my module are working correctly, but I don't know how to open a socket to the outside world! It is also possible I have not configured LwIP correctly for the gateway although the IP addresses and gateway for PPP are auto configured over PPP. There is very little that can be configured on the WiFi module itself.

Further Info: Network topology is shown below. I can ping 192.168.1.121 from other PCs on my home network, but only while the LwIP code is running (shows LwIP is handling the ping). I can open a UDP socket to 172.30.0.251:23 from LwIP to the WiFi module and use it to send AT commands to configure the module. I can call lwip_gethostbyname("echo.u-blox.com") to get the correct IP address (195.34.89.241) so DNS is working.

I have a layout.ejs file that provides the basic layout of every page that I have for my node application. This includes some basic CSS files (i.e bootstrap). I have other ejs files that have their body rendered using that layout.ejs file but I also want them to be able to include their own CSS files for some custom styles.

I've tried to include the CSS directly in the other ejs files but that just sets the css file in the body of the html. I have thought about using a javascript file that injects the CSS file client-side but this feels too 'hacky' for me.

Currently, my test layout (the one that inherits from layout.ejs) looks essentially like this:

As Hardware, I'm using an Arduino Due and a GPS Receiver from u-Blox (https://www.sparkfun.com/products/15005) for my project. I basically want to retrieve a certain message (UBX-RXM-RAWX) via UART. As I will parse this message in post-processing, it would be fine to just read all binary data and store it directly onto an SD card. Unfortunately, not being very experienced in C++, I'm having troubles storing binary data into any file.

I see I'm missing some general knowledge there, and so I wanted to ask if you could help me out? My code is attached as well or can be found on github: https://github.com/dariopa/GPS-Logging-Station/blob/master/GPS%20Station/_UBX_GPS_StoreBinaryMessage_RAWX_DUE/_UBX_GPS_StoreBinaryMessage_RAWX_DUE.ino

Thanks for any help!

I am using a VK-172 U-Blox AG GPS in my Raspberry Pi 3 as part of a receive-only APRS iGate. I am running Docker on the RPi. Right now I am running a Docker container that uses the GPS dongle for position data with Direwolf, which is reported to the APRS-IS network.

I would also like to run a Docker container to use the GPS as a very accurate time reference for other machines on my network.

Is it possible to share a USB GPS dongle with multiple Docker containers?

73 de K6JEB

I have integrated Quick Blox Chat SDK version 3.8.1 (the latest version available as on 25-Sep-2018). I have successfully integrated the chat SDK. The problem which I'm facing is app crashes while opening for the first time with the following error.