MATLAB XPC TARGET 4 - DEVICE DRIVERS Guía de usuario Pagina 57
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Adding Interrupt Support
4 Copy the file sample_int.m toauniquefilenameinthefollowingdirectory:
matlabroot\toolbox\rtw\targets\xpc\target\build\
xpcblocks\thirdpartydrivers
For example:
your_company_name_int.m
The xPC Target software s earches in this directory for file names that end
with
_int.m and looks for board interrupt descriptions.
5 Open and edit the following file:
matlabroot\toolbox\rtw\targets\xpc\target\build\
xpcblocks\thirdpartydrivers\
your_company_name_int.m
Addtothisfileaboard structure for each xPC Target supported board for
which interrupt functions have been written. See “Filling in the Driver
board Structure” on page 5-10 for a description o f how to fill in a board
structure.
6 Save and close the file.
7 At the MATLAB Command Window, type:
rehash toolbox
8 Restart the MATLAB interface to update the Async IRQ Source block and
Configuration Parameters dialogs.
Guidelines for Creating Interrupt Functions
xPC Target interrupt functions have predefined purposes and typically follow
a particular order. This section describes the guidelines on creating interrupt
functions. See “Hook Function Prototypes — Alphabetical List” on page 5-15
for the prototypes for these functions.
To prepare for the creatio n of the hook file, examine the existing xPC Target
hook files (
matlabroot\toolbox\rtw\targets\xpc\target\build\src) and
copy and modify one that is the same board type, PCI or ISA, as the board for
which you are creating a custom driver. For ex ample,
xpc6804hooks.c is for
an ISA board. Place your new file in
5-9
- Device Drivers 1
- 508-647-7000 (Phone) 2
- 508-647-7001 (Fax) 2
- The MathWorks, Inc 2
- 3 Apple Hill Drive 2
- Natick, MA 01760-2098 2
- Revision History 3
- Contents 5
- Driver Authoring Tool 7
- I/O Structures — By Category 8
- I/O Functions — By Category 8
- Customizing xPC Target 9
- Introduction 10
- References 12
- Source Code 13
- MathWorks Consulting 13
- Third-Party Directory 14
- Block mask 15
- Mask editor 15
- Mask initialization (M-file) 15
- Before You Star t 16
- - I/O port mapped 16
- - Memory address mapped 16
- - Input and output ports 17
- - Mask parameters 17
- Register Access 18
- Inlining xPC Target Drivers 18
- Creating a Custom Driver 19
- Creating a C ustom Driver 21
- Debugging Notes 24
- PCI Drivers 25
- PCI Bus Considerations 26
- PCI Configuration Space API 27
- 2 PCI Drivers 28
- Sample PCI Device Driver 32
- ISA and PC/104 Drivers 33
- 3 ISA and PC/104 Drivers 34
- Memory Mapped 35
- Masking Drivers 37
- 4 Masking Drivers 38
- Driver Mask Guidelines 39
- Cross-Block Checking 41
- When You Are Done 42
- Sample Driver Mask 43
- Interrupt Support 49
- 5 Interrupt Support 50
- Adding Interrupt Support 55
- 6 Save and close the file 57
- - Async IRQ Source block 59
- • your_company_name_boardStop 63
- PostHook 64
- Argument 66
- See Also xpcPCIDevice 66
- Custom xPC Target Driver 69
- S-Function Guidelines 70
- DMA Considerations 73
- Passing Parameters 74
- Accessing Registers 75
- • Structure 76
- Creating Custom Drivers 77
- Using the xPC T arget 77
- Setting Up Driver Variables 80
- 3 In the M ain tab, enter: 81
- Saving the Configuration 83
- Reloading the Configuration 84
- Creating the C File Template 84
- 3 Click the Build button 85
- I/O Structures — By 87
- Category 87
- I/O Structures — By Catego ry 88
- I/O Structures — 89
- Alphabetical List 89
- BaseAddress to a virtual 92
- VirtAddress field 92
- I/O Functions — By 95
- Por t I/O 96
- PCI Configur 96
- Physical Memory 96
- Miscellaneous 97
- I/O Functions — By C atego ry 98
- I/O Functions — 99
- Free physical memory 102
- Free specified m e mory 102
- Arguments 103
- XPC_NO_SUB for s ubDeviceId 105
- See Also xpcGetPCIDeviceInfo 110
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