Using the NicheStack TCP/IP Stack - Nios II Edition Tutorial

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ID 683574
Date 10/04/2021
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Document Table of Contents
Document Table of Contents x
1. Using the NicheStack TCP/IP Stack - Nios II Edition Tutorial
1. Using the NicheStack TCP/IP Stack - Nios II Edition Tutorial x
1.1. Introduction 1.2. Nichestack Support and Licensing 1.3. Hardware and Software Requirements 1.4. Tutorial Files 1.5. Software Development Flow 1.6. Nios II Simple Socket Server Overview 1.7. Important NicheStack TCP/IP Stack Concepts 1.8. Where to Go Next 1.9. Hardware Setup Details 1.10. Document Revision History for the Using the NicheStack TCP/IP Stack - Nios II Edition Tutorial
1.4. Tutorial Files x
1.4.1. Hardware Design Files 1.4.2. Software Files
1.5. Software Development Flow x
1.5.1. Creating a New Nios II Project 1.5.2. Configuring the BSP 1.5.3. Examining the Nios II Simple Socket Server Project Files 1.5.4. Building and Running the Nios II Simple Socket Server Project 1.5.5. Interacting with the Nios II Simple Socket Server
1.6. Nios II Simple Socket Server Overview x
1.6.1. Software Naming Conventions 1.6.2. Software Architecture 1.6.3. MicroC-OS/II Resources
1.6.3. MicroC-OS/II Resources x
1.6.3.1. Tasks 1.6.3.2. Inter-Task Communication Resources
1.7. Important NicheStack TCP/IP Stack Concepts x
1.7.1. Error Handling 1.7.2. NicheStack TCP/IP Stack Default Task Creation 1.7.3. Creating Tasks that Use the NicheStack TCP/IP Stack Sockets Interface 1.7.4. Task Priorities in the Nios II Simple Socket Server Design 1.7.5. Task Stack Size
1.7.4. Task Priorities in the Nios II Simple Socket Server Design x
1.7.4.1. MicroC/OS-II Internal Tasks 1.7.4.2. NicheStack TCP/IP Stack Internal Tasks 1.7.4.3. Networking Initialization Task 1.7.4.4. User Networking Tasks 1.7.4.5. User Non-Networking Tasks
1.9. Hardware Setup Details x
1.9.1. Network Connection
1. Using the NicheStack TCP/IP Stack - Nios II Edition Tutorial

1.7.2. NicheStack TCP/IP Stack Default Task Creation

The NicheStack TCP/IP Stack creates one or more system level tasks during system initialization, when you call the netmain() function. Users have complete control over these system level tasks through a global configuration file named ipport.h, located in the directory structure for the BSP project, in the iniche/src/h/nios2 folder.

You can edit the #define statements in ipport.h to configure the following options for the NicheStack TCP/IP Stack:

  • Module Inclusion—Identifies which built-in NicheStack modules should be started
  • Module Priority—Identifies what MicroC/OS-II priority the module task should use
  • Module Stack Size—Identifies what MicroC/OS-II stack size the module should use

For more information about other NicheStack TCP/IP Stack options that can be enabled at run-time, refer to the NicheStack TCP/IP Stack documentation in the NicheStackRef.zip file located in the <Nios II EDS install path>/components/altera_iniche/UCOSII/31src directory.

In the Nios II Simple Socket Server design example, only the minimum required NicheStack TCP/IP Stack tasks have been configured to run. These tasks are as follows:

  • tk_netmain—Initializes the stack, including networking interfaces
  • tk_nettick—A time management task that the networking stack uses

For more information about these NicheStack TCP/IP Stack tasks, refer to the “Task Priorities in the Nios II Simple Socket Server Design” section.

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