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1. Overview of Nios® V Embedded Processor Development
2. Getting Started with the Graphical User Interface
3. Getting Started from the Command Line
4. Nios® V Processor Software Development and Implementation
5. Nios® V Processor Board Support Package Editor
6. Overview of the Hardware Abstraction Layer
7. Developing Programs Using the Hardware Abstraction Layer
8. Developing Device Drivers for the Hardware Abstraction Layer
9. Exception Handling
10. Cache and Tightly-Coupled Memory
11. MicroC/OS-II Real-Time Operating System
12. MicroC/TCP-IP Protocol Stack
13. FreeRTOS* Real-Time Operating System
14. Read-Only Zip File System
15. Publishing Component Information to Embedded Software
16. Nios® V Processor Appendix
A. Nios® V Processor Software Developer Handbook Archives
17. Revision History for the Nios® V Processor Software Developer Handbook
4.3.2.1. Selecting the Operating System
4.3.2.2. Intel HAL Configuration Tips
4.3.2.3. Micrium MicroC/OS-II Configuration tips
4.3.2.4. Configuring FreeRTOS*
4.3.2.5. Adding Software Package
4.3.2.6. Using Tcl Script with BSP Editor
4.3.2.7. Exporting Tcl Scripts with BSP Editor
4.3.2.8. Importing Tcl Script to Create a New BSP
7.1. HAL BSP Settings
7.2. The Nios® V Processor Embedded Project Structure
7.3. The system.h System Description File
7.4. Data Widths and the HAL Type Definitions
7.5. UNIX-Style Interface
7.6. Using Character-Mode Devices
7.7. Using Timer Devices
7.8. Using Flash Devices
7.9. Using DMA Devices
7.10. Interrupt Controllers
7.11. Reducing Code Footprint in Embedded Systems
7.12. Boot Sequence and Entry Point
7.13. Memory Usage
7.14. Working with HAL Source Files
7.11.1. Apply Compiler Flags
7.11.2. Use Small Variant Device Drivers
7.11.3. Reduce the File Descriptor Pool
7.11.4. Use /dev/null
7.11.5. Use a Smaller File I/O Library
7.11.6. Use the Minimal Character-Mode API
7.11.7. Eliminate Unused Device Drivers
7.11.8. Use the Picolibc Library
7.11.9. Eliminate Unused alt_load()
7.11.10. Eliminate Unneeded Exit Code
8.1. Driver Integration in the HAL API
8.2. The HAL Peripheral-Specific API
8.3. Preparing for HAL Driver Development
8.4. Development Flow for Creating Device Drivers
8.5. Nios® V Processor Hardware Design Concepts
8.6. Accessing Hardware
8.7. Creating Embedded Drivers for HAL Device Classes
8.8. Integrating a Device Driver in the HAL
8.9. Creating a Custom Device Driver for the HAL
8.10. Reducing Code Footprint in HAL Embedded Drivers
8.11. HAL Namespace Allocation
8.12. Overriding the HAL Default Device Drivers
8.8.5.2.1. Creating and Naming the Driver or Package
8.8.5.2.2. Identifying the Hardware Component Class
8.8.5.2.3. Setting the BSP Type
8.8.5.2.4. Specifying an Operating System
8.8.5.2.5. Specifying Source Files
8.8.5.2.6. Specifying a Subdirectory
8.8.5.2.7. Enabling Software Initialization
8.8.5.2.8. Adding Include Paths
8.8.5.2.9. Version Compatibility
9.1. Nios® V Processor Exception Handling Overview
9.2. Nios® V Processor Hardware Interrupt Service Routines
9.3. Nios® V Processor Software Interrupt Service Routines
9.4. Nios® V Processor Timer Interrupt Service Routine
9.5. Improving Nios® V Processor ISR Performance
9.6. Debugging Nios® V Processor ISRs
9.7. HAL Exception Handling System Implementation
9.8. Nios® V Processor Instruction-Related Exception Handler
9.5.1.1. Execute Time-Intensive Algorithms in the Application Context
9.5.1.2. Implement Time-Intensive Algorithms in Hardware
9.5.1.3. Increase Buffer Size
9.5.1.4. Use Double Buffering
9.5.1.5. Keep Interrupts Enabled
9.5.1.6. Use Fast Memory
9.5.1.7. Use a Separate Exception Stack
9.5.1.8. Use Nested Hardware Interrupts
9.5.1.9. Use Compiler Optimization
12.1. Overview of the MicroC/TCP-IP Protocol Stack
12.2. Support and Licensing
12.3. Prerequisites for Understanding the MicroC/TCP-IP Protocol Stack
12.4. Introduction to the MicroC/TCP-IP Protocol Stack - Nios® V Processor Edition
12.5. The MicroC/TCP-IP Protocol Stack Files and Directories
12.6. Enabling MicroC/TCP-IP Protocol Stack
12.7. Using the MicroC/TCP-IP Protocol Stack
16.1.1.1. _exit()
16.1.1.2. _rename()
16.1.1.3. alt_dcache_flush()
16.1.1.4. alt_dcache_flush_all()
16.1.1.5. alt_icache_flush_all()
16.1.1.6. alt_dcache_flush_no_writeback()
16.1.1.7. alt_icache_flush_all()
16.1.1.8. alt_icache_flush()
16.1.1.9. alt_alarm_start()
16.1.1.10. alt_alarm_stop()
16.1.1.11. alt_dma_rxchan_depth()
16.1.1.12. alt_dma_rxchan_close()
16.1.1.13. alt_dev_reg()
16.1.1.14. alt_dma_rxchan_open()
16.1.1.15. alt_dma_rxchan_prepare()
16.1.1.16. alt_dma_rxchan_reg()
16.1.1.17. alt_dma_txchan_close()
16.1.1.18. alt_dma_txchan_ioctl()
16.1.1.19. alt_dma_txchan_open()
16.1.1.20. alt_dma_txchan_reg()
16.1.1.21. alt_flash_close_dev()
16.1.1.22. alt_exception_cause_generated_bad_addr()
16.1.1.23. alt_erase_flash_block()
16.1.1.24. alt_dma_rxchan_ioctl()
16.1.1.25. alt_dma_txchan_space()
16.1.1.26. alt_dma_txchan_send()
16.1.1.27. alt_flash_open_dev()
16.1.1.28. alt_fs_reg()
16.1.1.29. alt_get_flash_info()
16.1.1.30. alt_ic_irq_disable()
16.1.1.31. alt_ic_irq_enabled()
16.1.1.32. alt_ic_isr_register()
16.1.1.33. alt_ic_irq_enable()
16.1.1.34. alt_instruction_exception_register()
16.1.1.35. alt_irq_cpu_enable_interrupts ()
16.1.1.36. alt_irq_disable_all()
16.1.1.37. alt_irq_enable_all()
16.1.1.38. alt_irq_enabled()
16.1.1.39. alt_irq_init()
16.1.1.40. alt_irq_pending ()
16.1.1.41. alt_llist_insert()
16.1.1.42. alt_llist_remove()
16.1.1.43. alt_load_section()
16.1.1.44. alt_nticks()
16.1.1.45. alt_read_flash()
16.1.1.46. alt_tick()
16.1.1.47. alt_ticks_per_second()
16.1.1.48. alt_timestamp()
16.1.1.49. alt_timestamp_freq()
16.1.1.50. alt_timestamp_start()
16.1.1.51. alt_write_flash()
16.1.1.52. alt_write_flash_block()
16.1.1.53. close()
16.1.1.54. fstat()
16.1.1.55. fork()
16.1.1.56. fcntl()
16.1.1.57. execve()
16.1.1.58. getpid()
16.1.1.59. kill()
16.1.1.60. stat()
16.1.1.61. settimeofday()
16.1.1.62. wait()
16.1.1.63. unlink()
16.1.1.64. sbrk()
16.1.1.65. link()
16.1.1.66. lseek()
16.1.1.67. open()
16.1.1.68. alt_sysclk_init()
16.1.1.69. times()
16.1.1.70. read()
16.1.1.71. write()
16.1.1.72. usleep()
16.1.1.73. alt_lock_flash()
16.1.1.74. gettimeofday()
16.1.1.75. ioctl()
16.1.1.76. isatty()
16.1.1.77. alt_niosv_enable_msw_interrupt()
16.1.1.78. alt_niosv_disable_msw_interrupt()
16.1.1.79. alt_niosv_is_msw_interrupt_enabled()
16.1.1.80. alt_niosv_trigger_msw_interrupt()
16.1.1.81. alt_niosv_clear_msw_interrupt()
16.1.1.82. alt_niosv_register_msw_interrupt_handler()
16.5.2.1. add_memory_device
16.5.2.2. add_memory_region
16.5.2.3. add_section_mapping
16.5.2.4. are_same_resource
16.5.2.5. delete_memory_region
16.5.2.6. delete_section_mapping
16.5.2.7. disable_sw_package
16.5.2.8. enable_sw_package
16.5.2.9. get_addr_span
16.5.2.10. get_assignment
16.5.2.11. get_available_drivers
16.5.2.12. get_available_sw_packages
16.5.2.13. get_base_addr
16.5.2.14. get_break_offset
16.5.2.15. get_break_slave_desc
16.5.2.16. get_cpu_name
16.5.2.17. get_current_memory_regions
16.5.2.18. get_current_section_mappings
16.5.2.19. get_default_memory_regions
16.5.2.20. get_driver
16.5.2.21. get_enabled_sw_packages
16.5.2.22. get_exception_offset
16.5.2.23. get_exception_slave_desc
16.5.2.24. get_fast_tlb_miss_exception_offset
16.5.2.25. get_fast_tlb_miss_exception_slave_desc
16.5.2.26. get_interrupt_controller_id
16.5.2.27. get_irq_interrupt_controller_id
16.5.2.28. get_irq_number
16.5.2.29. get_memory_region
16.5.2.30. get_module_class_name
16.5.2.31. get_module_name
16.5.2.32. get_reset_offset
16.5.2.33. get_reset_slave_desc
16.5.2.34. get_section_mapping
16.5.2.35. get_setting
16.5.2.36. get_setting_desc
16.5.2.37. get_slave_descs
16.5.2.38. is_char_device
16.5.2.39. is_connected_interrupt_controller_device
16.5.2.40. is_connected_to_data_master
16.5.2.41. is_connected_to_instruction_master
16.5.2.42. is_ethernet_mac_device
16.5.2.43. is_flash
16.5.2.44. is_memory_device
16.5.2.45. is_non_volatile_storage
16.5.2.46. is_timer_device
16.5.2.47. log_debug
16.5.2.48. log_default
16.5.2.49. log_error
16.5.2.50. log_verbose
16.5.2.51. set_driver
16.5.2.52. set_ignore_file
16.5.2.53. set_setting
16.5.2.54. update_memory_region
16.5.2.55. update_section_mapping
16.5.2.56. add_default_memory_regions
16.5.2.57. create_bsp
16.5.2.58. generate_bsp
16.5.2.59. get_available_bsp_type_versions
16.5.2.60. get_available_bsp_types
16.5.2.61. get_available_cpu_architectures
16.5.2.62. get_available_cpu_names
16.5.2.63. get_available_software
16.5.2.64. get_available_software_setting_properties
16.5.2.65. get_available_software_settings
16.5.2.66. get_bsp_version
16.5.2.67. get_cpu_architecture
16.5.2.68. get_sopcinfo_file
16.5.2.69. get_supported_bsp_types
16.5.2.70. is_bsp_hal_extension
16.5.2.71. open_bsp
16.5.2.72. save_bsp
16.5.2.73. set_bsp_version
16.5.2.74. set_logging_mode
16.5.3.1. add_class_sw_setting
16.5.3.2. add_class_systemh_line
16.5.3.3. add_module_sw_property
16.5.3.4. add_module_sw_setting
16.5.3.5. add_module_systemh_line
16.5.3.6. add_systemh_line
16.5.3.7. get_class_peripheral
16.5.3.8. get_module_assignment
16.5.3.9. get_module_name
16.5.3.10. get_module_peripheral
16.5.3.11. get_module_sw_setting_value
16.5.3.12. get_peripheral_property
16.5.3.13. remove_class_systemh_line
16.5.3.14. remove_module_systemh_line
16.5.3.15. set_class_sw_setting_property
16.5.3.16. set_module_sw_setting_property
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8.7.1.1.2. Default Behavior for Functions Defined in alt_dev
A driver is not required to provide all of the functions in the alt_dev structure. If a given function pointer is set to NULL, a default action is used instead.
Function | Default Behavior |
---|---|
open | Calls to open() for this device succeed, unless the device was previously locked by a call to ioctl() with req = TIOCEXCL. |
close | Calls to close() for a valid file descriptor for this device always succeed. |
read | Calls to read() for this device always fail. |
write | Calls to write() for this device always fail. |
lseek | Calls to lseek() for this device always fail. |
fstat | The device identifies itself as a character mode device. |
ioctl | ioctl() requests that cannot be handled without reference to the device fail. |
In addition to the function pointers, the alt_dev structure contains two other fields: llist and name. llist is for internal use, and must always be set to the value ALT_LLIST_ENTRY. name is the location of the device in the HAL file system and is the name of the device as defined in system.h.