Quality RTOS & Embedded Software

 Real time embedded FreeRTOS RSS feed 
Real time embedded FreeRTOS mailing list 
Quick Start Supported MCUs PDF Books Trace Tools Ecosystem TCP & FAT Training




Loading

Socket Creation Problem

Posted by ramanuday on July 2, 2015

I tried to create a new socket using

FreeRTOSsocket(FREERTOSAFINET, FREERTOSSOCKDGRAM, FREERTOSIPPROTO_UDP );

but it is entering the vAssertCalled() function and continuously looping over there.

When i tried to debug it is being called from the function

FreeRTOSSocket() { ... ... configASSERT( listLISTIS_INITIALISED( &xBoundSocketsList ) );

...

}

Can anyone help me with this socket creation..?


Socket Creation Problem

Posted by rtel on July 2, 2015

Have you called FreeRTOSIPInit()? http://www.freertos.org/FreeRTOS-Plus/FreeRTOSPlusTCP/TCPNetworkingTutorialInitialising_TCP.html


Socket Creation Problem

Posted by heinbali01 on July 2, 2015

Hi,

On the page referred to by Richard you will also see this important user-provided function:

~~~~~ void vApplicationIPNetworkEventHook( eIPCallbackEventt eNetworkEvent ) { static BaseTypet xTasksAlreadyCreated = pdFALSE;

/* Both eNetworkUp and eNetworkDown events can be processed here. */
if( eNetworkEvent == eNetworkUp )
{
    /* Create the tasks that use the TCP/IP stack if they have not already
    been created. */
    if( xTasksAlreadyCreated == pdFALSE )
    {
        /*
         * For convenience, tasks that use FreeRTOS+TCP can be created here
         * to ensure they are not created before the network is usable.
         */

        xTasksAlreadyCreated = pdTRUE;
    }
}

} ~~~~~

Only after xTasksAlreadyCreated has become true, you can start create and use sockets. Of course, you can also make this a global variable and call it something like:

BaseType_t xIPNetworkIsReady = pdFALSE;

Regards.


[ Back to the top ]    [ About FreeRTOS ]    [ Sitemap ]    [ ]




Copyright (C) 2004-2010 Richard Barry. Copyright (C) 2010-2016 Real Time Engineers Ltd.
Any and all data, files, source code, html content and documentation included in the FreeRTOSTM distribution or available on this site are the exclusive property of Real Time Engineers Ltd.. See the files license.txt (included in the distribution) and this copyright notice for more information. FreeRTOSTM and FreeRTOS.orgTM are trade marks of Real Time Engineers Ltd.

Latest News:

FreeRTOS V9.0.0 is now available for download.


Free TCP/IP and file system demos for the RTOS


Sponsored Links

⇓ Now With No Code Size Limit! ⇓
⇑ Free Download Without Registering ⇑


FreeRTOS Partners

ARM Connected RTOS partner for all ARM microcontroller cores

Renesas Electronics Gold Alliance RTOS Partner.jpg

Microchip Premier RTOS Partner

RTOS partner of NXP for all NXP ARM microcontrollers

Atmel RTOS partner supporting ARM Cortex-M3 and AVR32 microcontrollers

STMicro RTOS partner supporting ARM7, ARM Cortex-M3, ARM Cortex-M4 and ARM Cortex-M0

Xilinx Microblaze and Zynq partner

Silicon Labs low power RTOS partner

Altera RTOS partner for Nios II and Cortex-A9 SoC

Freescale Alliance RTOS Member supporting ARM and ColdFire microcontrollers

Infineon ARM Cortex-M microcontrollers

Texas Instruments MCU Developer Network RTOS partner for ARM and MSP430 microcontrollers

Cypress RTOS partner supporting ARM Cortex-M3

Fujitsu RTOS partner supporting ARM Cortex-M3 and FM3

Microsemi (previously Actel) RTOS partner supporting ARM Cortex-M3

Atollic Partner

IAR Partner

Keil ARM Partner

Embedded Artists