sos.c File Reference

Example: blink user LED 3. More...

#include "stdio.h"
#include <termios.h>
#include <unistd.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/time.h>
#include "libpruio/pruio.h"

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Macros
#define	_GNU_SOURCE   1
	Message for the compiler.
#define	PIN   24
	The CPU ball to control (user LED 3).
#define	OUT_K   pruio_gpio_setValue(io, PIN, 128 + pinmode) ; isleep(150) ; pruio_gpio_setValue(io, PIN, pinmode) ; isleep(100) ;
	Output a short blink.
#define	OUT_L   pruio_gpio_setValue(io, PIN, 128 + pinmode) ; isleep(350) ; pruio_gpio_setValue(io, PIN, pinmode) ; isleep(100) ;
	Output a long blink.
#define	OUT_S   OUT_K ; OUT_K ; OUT_K ; isleep(150)
	Output a 'S' (short - short - short).
#define	OUT_O   OUT_L ; OUT_L ; OUT_L ; isleep(150)
	Output an 'O' (long - long - long).

Functions
int	isleep (unsigned int mseconds)
	Wait for keystroke or timeout. More...
int	main (int argc, char **argv)
	The main function. More...

Detailed Description

Example: blink user LED 3.

This file contains an example on how to use libpruio to control the user LED 3 (near ethernet connector) on the beaglebone board. It shows how to unlock a CPU ball that is used by the system. And it shows how to control the unlocked ball. Find a functional description in section sos.

Licence: GPLv3, Copyright 2014-2023 by Thomas{ doT ]Freiherr[ At ]gmx[ DoT }net

Compile by: gcc -Wall -o sos sos.c -lpruio

Since

0.0

Definition in file sos.c.

Function Documentation

isleep()

int isleep

(

unsigned int

mseconds

)

Wait for keystroke or timeout.

Parameters

mseconds

Timeout value in milliseconds.

Returns

0 if timeout, 1 if input available, -1 on error.

Wait for a keystroke or timeout and return which of the events happened.

Definition at line 36 of file sos.c.

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main()

int main	(	int	argc,
		char **	argv
	)

The main function.

< Create a PruIo structure, wakeup subsystems.

< The current pin mode.

Definition at line 67 of file sos.c.

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