Hardware Reference
In-Depth Information
return
EXIT_SUCCESS
;
}
Compile and run the code:
bone#
gcc -o pushLED pushLED.c /usr/local/lib/libsoc.so
bone#
./pushLED
libsoc-debug: debug enabled (libsoc_set_debug)
libsoc-gpio-debug: requested gpio (60, libsoc_gpio_request)
libsoc-gpio-debug: GPIO already exported (60, libsoc_gpio_request)
libsoc-gpio-debug: requested gpio (7, libsoc_gpio_request)
libsoc-gpio-debug: GPIO already exported (7, libsoc_gpio_request)
libsoc-gpio-debug: setting direction to out (60,
libsoc_gpio_set_direction)
libsoc-gpio-debug: setting direction to in (7,
libsoc_gpio_set_direction)
BOTH: 3
libsoc-gpio-debug: setting edge to both (7, libsoc_gpio_set_edge)
BOTH: 3
libsoc-gpio-debug: creating new callback (7,
libsoc_gpio_callback_interrupt)
Push the button...
libsoc-debug: debug disabled (libsoc_set_debug)
Got it (1), button = 1
Got it (2), button = 0
Got it (3), button = 1
Got it (4), button = 1
Got it (5), button = 0
libsoc-debug: debug enabled (libsoc_set_debug)
libsoc-gpio-debug: callback thread was stopped
(7, libsoc_gpio_callback_interrupt_cancel)
libsoc-gpio-debug: freeing gpio (7, libsoc_gpio_free)
libsoc-gpio-debug: freeing gpio (60, libsoc_gpio_free)
The code responds quickly to the pushbutton. If you need more speed, comment-out the
printf
command in the interrupt service routine.
