Guidelines for Developing a Nios II HAL Device Driver

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ID 683146
Date 6/12/2015
Public
Document Table of Contents
Document Table of Contents
1. Guidelines for Developing a Nios II HAL Device Driver
1. Guidelines for Developing a Nios II HAL Device Driver
1.1. Prerequisites for HAL Device Driver Development 1.2. Developing the HAL UART Device Driver 1.3. Debugging the bit_bang_uart Project 1.4. The BitBangUartTransmit() Function 1.5. The BitBangUartReceive() Function 1.6. Creating Device Hardware Access Macros 1.7. Staging the HAL Device Driver Development 1.8. Understanding the Hardware-Specific INSTANCE and INIT Macros 1.9. Integrating a New HAL Device Driver in the BSP 1.10. Understanding HAL Mutual Exclusion Resources 1.11. Overview of Debugging Tools for HAL Device Drivers 1.12. Debugging the HAL UART Device Driver 1.13. Conclusion 1.14. Document Revision History
1.1. Prerequisites for HAL Device Driver Development
1.1.1. Using the HAL Architecture and Services 1.1.2. Software Requirements for the Driver Example 1.1.3. HAL Device Drivers and Components
1.2. Developing the HAL UART Device Driver
1.2.1. Preparing the bit_bang_uart Application and hal_my_uart BSP 1.2.2. Preparing the my_uart_driver Device Driver 1.2.3. Configuring the Altera_Avalon_UART Component 1.2.4. Importing Projects 1.2.5. Verifying Software Functionality 1.2.6. Preview: Customizing the Design
1.2.6. Preview: Customizing the Design
1.2.6.1. Making Software Modifications 1.2.6.2. Making Hardware Modifications
1.12. Debugging the HAL UART Device Driver
1.12.1. Setting Breakpoints in the my_uart_driver Device Driver 1.12.2. Setting Watchpoints in the HAL UART Device Driver 1.12.3. Reducing Driver Code and Memory Footprint 1.12.4. Interrupt Latency and Determinism 1.12.5. Debugging with the Altera Logging Functions
1.12.3. Reducing Driver Code and Memory Footprint
1.12.3.1. Using the Reduced Device Drivers API Option 1.12.3.2. Using the Lightweight Device Drivers API Option
1.12.5. Debugging with the Altera Logging Functions
1.12.5.1. Altera Logging Usage 1.12.5.2. Altera Logging Example
1. Guidelines for Developing a Nios II HAL Device Driver

1.2.4. Importing Projects

Follow these steps to import the bit_bang_uart application project and the hal_my_uart BSP project:

  1. In Qsys, in the tools menu, select Nios II Software Build Tools for Eclipse to launch the Nios II SBT for Eclipse.
  2. In Nios II SBT for Eclipse, in the File menu, click Import. The Import dialog box appears.
  3. Expand the Nios II Software Build Tools Project folder, and select Import Nios II Software Build Tools Project.
  4. Click Next. The Import Software Build Tools Project wizard appears.
  5. Next to Project Location, click Browse. Navigate to and select the <my_design> /software_examples/app/bit_bang_uart directory.
  6. Click OK.
  7. Name the project bit_bang_uart.
  8. Turn on Managed Project to have Nios II SBT for Eclipse manage your makefile for you.
  9. Click Finish. The wizard imports the bit_bang_uart application project.
  10. Repeat steps 2 through 9, but at step 5 instead import the <my_design> /software_examples/bsp/hal_my_uart BSP.

For additional information about importing Nios II SBT command-line projects, refer to “Importing a Command-Line Project” in the Getting Started with the Graphical User Interface chapter of the Nios II Software Developer's Handbook.

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