FreeRTOS Win32 simulator C++

Fortunato · March 21, 2023, 1:32pm

Hi,
Using eclipse 2012-12 the win32 port simulator works perfectly. Then I add Nature C++ to eclipse, adjust include path, but it does not links.
Anyone has any suggestion.
Best

aggarg · March 21, 2023, 4:24pm

Can you share the build log?

Fortunato · March 22, 2023, 7:57am

Hi Aggarg,

Sorry I did not update the topic. I worked on last night))).
This can be helpfull for people who are not very able to program in C++ like me.
After you add C++ to the demowin32 MingW project, in the menu project Natures,
you should update the include path for C++, and the preprocessor. You can copy from C
language settings. The includes for C++ need some more path, but the compiler tells you which.
Last, the more important which was the reason of my post, in the linker section, libraries section add winmm. Now it links. I made a C++ class with a static thread function, created a thread and everything ok.

Regards

aggarg · March 22, 2023, 8:25am

Thank you for reporting back.

Fortunato · March 29, 2023, 9:40am

Hi,

Please do you know some sample code to write to uart using FreeRTOS Win32 Simulator?

Thanks.

Fortunato Marrelli
HTA s.r.l. - R&D - Software Engineer

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aggarg · March 29, 2023, 9:49am

You should be able to use this as a reference - FreeRTOS/comm_if_windows.c at main · FreeRTOS/FreeRTOS · GitHub

[EDIT] - Updated link.

Fortunato · March 29, 2023, 10:05am

Hi,

Yes, I found this but I am not able to understand how this driver is used.

I did not find the caller project.

Best Regards

Fortunato Marrelli
HTA s.r.l. - R&D - Software Engineer

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aggarg · March 29, 2023, 10:11am

All the projects at this location use this - https://github.com/FreeRTOS/FreeRTOS/tree/main/FreeRTOS-Plus/Demo/FreeRTOS_Cellular_Interface_Windows_Simulator

An example is - https://github.com/FreeRTOS/FreeRTOS/tree/main/FreeRTOS-Plus/Demo/FreeRTOS_Cellular_Interface_Windows_Simulator/MQTT_Mutual_Auth_Demo_with_BG96

Note that it is an implementation of comm interface (which is used by our cellular interface) implemented using Windows communication over UART. That is why I said that you should be able to use it as a reference.

Fortunato · March 29, 2023, 4:23pm

Hi,

thank you very much anyway. I tried to run the project but it did not run

a COM Uart, it was a MQTT task and I stopped when it asks some settings which

I do not know.

Have a nice day.

Fortunato Marrelli
HTA s.r.l. - R&D - Software Engineer

This email may contain confidential and/or private information.

ActoryOu · March 30, 2023, 2:23am

Hi @Fortunato,
Please help to configure your setting in cellular_config.h and demo_config.h. (Allow me to take BG96 as example.)

In cellular_config.h, you need to set:

CELLULAR_COMM_INTERFACE_PORT
CELLULAR_APN

In demo_config.h, you can follow the instructions in Configuring the MQTT Broker Connection to set it up.

Please let us know if you have further question.
BTW, it would be good to have a separate topic for this question since your original problem had been resolved.

Thanks.

Fortunato · March 30, 2023, 5:36am

Hi,

Ok. It is the Configurating the MQTT broker I did not know what to do. I will check the documentation.

Regards

Fortunato Marrelli
HTA s.r.l. - R&D - Software Engineer

This email may contain confidential and/or private information.

Fortunato · March 31, 2023, 5:38am

I registered to AWS, it looks like the first step to do.

Thanks

Fortunato Marrelli
HTA s.r.l. - R&D - Software Engineer

This email may contain confidential and/or private information.

Fortunato · April 14, 2023, 5:16am

Hello Gaurav Aggarwal,

I checked mqtt_mutual_auth_demo_with_bg96 to see how serial com works.

I used directly prvCommIntfOpen,prvCommIntfSend,prvCommIntfReceive,prvCommIntfClose

and looks like it works, I can open the port, send characters and read characters.

Though, I cannot understand how the program works. I provided a receive callback but it is not

working, in particular I have seen this code, it looks like sets interrupts to simulate UARTS interrups.

Could you tell me if there is some detail explanation of the code?

if( commIntRet == IOT_COMM_INTERFACE_SUCCESS )

{

pCellularCommContext->commReceiveCallback = receiveCallback;

commIntRet = prvSetupCommTaskThread( pCellularCommContext );

}

if( commIntRet == IOT_COMM_INTERFACE_SUCCESS )

{

vPortSetInterruptHandler( portINTERRUPT_UART, prvProcessUartInt );

pCellularCommContext->commReceiveCallbackThread =

CreateThread( NULL, 0, prvCellularCommReceiveCBThreadFunc, hComm, 0, NULL );

/* CreateThread return NULL for error. */

if( pCellularCommContext->commReceiveCallbackThread == NULL )

{

LogError( ( “Cellular CreateThread fail %d”, GetLastError() ) );

commIntRet = IOT_COMM_INTERFACE_FAILURE;

}

What does Platform_CreateDetachedThread do?

Best Regards

Have a nice day

Fortunato Marrelli
HTA s.r.l. - R&D - Software Engineer

This email may contain confidential and/or private information.

Fresh · April 14, 2023, 8:44am

Hi Fortunato,

The comm interface creates a windows thread to wait for the COM port EV_RXCHAR event. FreeRTOS is not aware of this windows thread.

The implementation create another FreeRTOS thread to poll the rxEvent and calls vPortGenerateSimulatedInterrupt in this FreeRTOS thread to handler the interrupt.

This thread is created with Platform_CreateDetachedThread. If this thread is not created properly, the receive callback function won’t be called.

Fortunato · April 14, 2023, 12:42pm

Hello Ching-Hsin Lee,

Thank you very much for the explanation. It’s hard but It helps.

I think I will poll if any characters received without interrupts, when

I will be more confident I will use interrupts. AT this moment infact,

I am not very clear about the mechanism.

Best Regards.

Have a nice weekend

Fortunato Marrelli
HTA s.r.l. - R&D - Software Engineer

This email may contain confidential and/or private information.

Fortunato · April 17, 2023, 7:06am

Hi CHING-HSIN LEE,

could you please tell me how I can read a text file which is in the windows filesystem

in the WIN32-MingW port?

Best Regards

Fortunato Marrelli
HTA s.r.l. - R&D - Software Engineer

This email may contain confidential and/or private information.

Fresh · April 18, 2023, 3:42am

Hi Fortunato,

The file operations in stdio are supported in WIN32-Mingw.
You can reference the demo OTA_pal implementation from this link

github.com

FreeRTOS/FreeRTOS/blob/main/FreeRTOS-Plus/Demo/AWS/Ota_Windows_Simulator/Common/Ota_PAL/Win32/ota_pal.c

/*
 * FreeRTOS V202212.00
 * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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Fortunato · April 18, 2023, 5:21am

Thank you very much.

It really helps.

Best Regards

Fortunato Marrelli
HTA s.r.l. - R&D - Software Engineer

This email may contain confidential and/or private information.

Fortunato · April 20, 2023, 11:24am

Hi CHING-HSIN LEE

Your reply was perfect.

I can read and write files. Perfect.

Sorry If I make you a new question.

I have to use lwip or something similar to open a socket

And communicate over the ethernet. Could you suggest me again a sample project?

What is the IP address if I need to communicate?

Best Regards

Fortunato Marrelli
HTA s.r.l. - R&D - Software Engineer

This email may contain confidential and/or private information.

ActoryOu · April 21, 2023, 1:46am

Hi @Fortunato,
I’d suggest to use FreeRTOS-Plus-TCP, which is also a TCP-IP stack for socket functionalities.
And you can take below demos as references:

For Linux, refer to this FreeRTOS_Plus_TCP_Echo_Posix.
For Windows, refer to this FreeRTOS_Plus_TCP_Minimal_Windows_Simulator.

Thanks.