lprint | A Label Printer Application | 3D Printing library
kandi X-RAY | lprint Summary
kandi X-RAY | lprint Summary
LPrint implements printing for a variety of common label and receipt printers connected via network or USB. Features include:. For more information, see the file "DOCUMENTATION.md", the man pages in the "man" directory, and/or the LPrint project page at
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QUESTION
I've been made aware that aiosmtpd logs to the syslog. I'm using a Red Hat Linux distribution and can't find anything related to my SMTP server in the messages or maillog file. I'm trying to debug an issue with a device that can't connect to my SMTP server with basic authentication as I can't find any reason why the device is being rejected by my server. The only way I've been able to debug so far is by using the EHLO and MAIL handlers and printing a message when that stage of the connection is reached. Ideally, I'd like as much as possible to be logged out, like with smtplib that enables you to see each message between the client and server. Is it possible to do this or some basic logging at least and how do I do it if so? The code I'm using is:
...ANSWER
Answered 2021-Dec-07 at 18:41If you search the aiosmtpd codebase for "logging.getLogger", you can find a few places where logging is being configured with Python's standard logging module.
In order to actually see these log messages, you need to configure the log level and add a log handler. Try calling the following "configure_logging" function early in your program. It will set up basic logging to stderr and to a file named "aiosmtpd.log". Complete example:
QUESTION
This is technically two things, but they're essentially the same so I combined them into one question.
I want to print long messages without having to control where a line break is in the text. For example, I wrote a long string and printed it with std::cout << str << std::endl;. Pipes | added here for demonstration purposes showing the end of the console line at the current window size, and an @ sign to show where the text stopped printing when not at the end where the pipe is.
ANSWER
Answered 2021-Mar-30 at 08:01You could use a function like
QUESTION
I am trying to link 2 files. There are 3 symbols (Assembly procedures) which I am trying to link. It worked perfectly with static linking, but when trying to do it dynamically - I receive an error.
...ANSWER
Answered 2021-Mar-12 at 14:01Since I can't put a comment as a solution, so, I will put an answer myself, which was given by fuz.
The important thing to do here was to pay attention to the error message (I know, how obvious). Every dynamically linked symbol in GAS assembly, even without C libraries, requires to have a type and size assigned inside the .so file, because GCC can't get this information about exported symbols on its own, and the programmer needs to explicitly give it. For example, for a function foo
QUESTION
The function below runs in LPC1769. I use FreeRTOS version 10.
I am having HardFault. I have debugged and I think I cornered the issue after long hours.
If I run this function it gives HardFault. Initially, I suspected malloc in substr3 function causes it. Freeing memory allocations didn't help. I therefore started to comment-out the code block by block until I find more accurate location of the issue in the parseMessage function.
If I comment out the lines between /* START OF PROBLEMATIC AREA */ and /* END OF PROBLEMATIC AREA */
the rest of code works without a single hiccup.
All I do in that code block, I assign values in the struct variables. The struct is global and initialized. I believe that that lines are causing the issue eventually. Maybe indirectly, I don't know that far.
e.g. strcpy(productInfoLeft.ucActualID, pid);
If I run all the codes in the parseMessage, it works for one or a few messages, they parsed OK and then MCU stops responding.
Struct in a file called common.h
ANSWER
Answered 2020-Sep-23 at 10:22Just for future reference, I like to share my findings and resolution of the problems.
There were two issues. One was array sizes with char used for strcpy. There were not properly set as some contributors mentioned.
Once that array sizes fixed, another issue was revealed itself in a clearer manner. It was about the malloc. For some reason although some remarks say otherwise in various resources, if you use malloc within FreeRTOS implementation, there is a chance you might have HardFault. Once I switched to FreeRTOS suggested malloc and free functions, things flattened. HardFault issue magically disappeared.
I've just placed that two wrapper functions (somewhere in a common file) without even changing my malloc and free calls.;
Creating a malloc/free functions that work with the built-in FreeRTOS heap is quite simple. We just wrap the pvPortMalloc/pvPortFree calls:
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