B&B Electronics PC Watchdog Timer Card ATXWDT Especificaciones descargar pdf (Pagina 24)

EP80579 Integrated Processor—Runtime Configuration

Intel

EP80579 Software Drivers for Embedded Applications on FreeBSD*

GSG September 2009

24 Order Number: 320152-005US

5.3.2 FreeBSD Module Load/Unload Instructions

Note: This step is not necessary if the make install command above succeeded. This is only

necessary to understand how to load and unload this driver individually.

To load the FreeBSD Watchdog Timer driver, execute the following command from the

directory where the compiled executable resides:

kldload ./iwdt.ko

To unload the FreeBSD Watchdog Timer driver execute the following command:

kldunload iwdt.ko

The kldstat command may be used to confirm if a module has been loaded or

unloaded:

kldstat | grep iwdt

The output of the kldstat command lists all modules loaded in the system. Look for an

entry titled “iwdt”.

5.3.3 FreeBSD Sample Codelet

A codelet is provided to demonstrate how a sample application interfaces with the

Watchdog Timer driver. This codelet is intended to run on an Intel

EP80579 Integrated

Processor with Intel

QuickAssist Technology Development Board with FreeBSD

installed. The EP80579 Embedded Software kernel should also be installed, but the

codelet works even if it is not. Run the codelet as follows:

1. Login as root. Root permissions are required for all operations.

2. Open a terminal window, change directory to /EP805XX_release/Embedded/

codelet/WDT and execute the bash script. Do not move the script to another

location.

[root@localhost ˜]# ./install.csh

The script checks that the Watchdog Timer driver is loaded, runs all of the

makefiles in the correct order, and runs the application.

The application output can be viewed in the terminal window.

3. For information about the WDT codelet, refer to the Readme document located at

/EP805XX_release/Embedded/codelet/WDT.

5.4 GPIO

5.4.1 FreeBSD Compilation Instructions

All source files for the FreeBSD release of General Purpose I/O (GPIO) driver are

located in the following directory within the FreeBSD compatible EP80579 embedded

software drivers release:

/EP805XX_release/Embedded/src/GPIO

Compilation of the FreeBSD GPIO driver separately from the rest of the software

package is possible. Enter the /EP805XX_release/Embedded/src/GPIO directory and

execute the following commands:

make clean

make

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