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Test application for drivers

Added by Raja Vankam over 12 years ago

Hi,

Do you have any test application to test the drivers such as GPIO and UART? Could you please share them?

Regards,
Raja.


Replies (1)

RE: Test application for drivers - Added by Michael Williamson over 12 years ago

For a linux system, GPIOs can be driven using sysfs via command line to modify the pins via the gpiolib if the kernel has configured the pinmux settings for them to be associated to the GPIO function. For example, set the pin associated with GPIO bank 1, offset 5, as an output driving high, the GPIO number is (16xbank+offset)=21 and the commands would look like:

echo "21" > /sys/class/gpio/export
echo "out" > /sys/class/gpioN/direction
echo "1" > /sys/class/gpioN/value

The UART should appear as /dev/ttyS[0-N]. You should be able to open them using a program such as minicom, etc.

-Mike

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