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- /*
- * softPwm.c:
- * Test of the software PWM driver. Needs 8 LEDs connected
- * to the Pi - e.g. Ladder board.
- *
- * Copyright (c) 2012-2013 Gordon Henderson. <projects@drogon.net>
- ***********************************************************************
- * This file is part of wiringPi:
- * https://projects.drogon.net/raspberry-pi/wiringpi/
- *
- * wiringPi is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * wiringPi is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with wiringPi. If not, see <http://www.gnu.org/licenses/>.
- ***********************************************************************
- */
-
- #include <stdio.h>
- #include <errno.h>
- #include <string.h>
-
- #include <wiringPi.h>
- #include <softPwm.h>
-
- #define RANGE 100
- #define NUM_LEDS 8
-
- int ledMap [NUM_LEDS] = { 0, 1, 2, 3, 4, 5, 6, 7 } ;
-
- int values [NUM_LEDS] = { 0, 25, 50, 75, 100, 75, 50, 25 } ;
-
- int main ()
- {
- int i, j ;
- char buf [80] ;
-
- wiringPiSetup () ;
-
- for (i = 0 ; i < NUM_LEDS ; ++i)
- {
- softPwmCreate (ledMap [i], 0, RANGE) ;
- printf ("%3d, %3d, %3d\n", i, ledMap [i], values [i]) ;
- }
-
- fgets (buf, 80, stdin) ;
-
- // Bring all up one by one:
-
- for (i = 0 ; i < NUM_LEDS ; ++i)
- for (j = 0 ; j <= 100 ; ++j)
- {
- softPwmWrite (ledMap [i], j) ;
- delay (10) ;
- }
-
- fgets (buf, 80, stdin) ;
-
- // All Down
-
- for (i = 100 ; i > 0 ; --i)
- {
- for (j = 0 ; j < NUM_LEDS ; ++j)
- softPwmWrite (ledMap [j], i) ;
- delay (10) ;
- }
-
- fgets (buf, 80, stdin) ;
-
- for (;;)
- {
- for (i = 0 ; i < NUM_LEDS ; ++i)
- softPwmWrite (ledMap [i], values [i]) ;
-
- delay (50) ;
-
- i = values [0] ;
- for (j = 0 ; j < NUM_LEDS - 1 ; ++j)
- values [j] = values [j + 1] ;
- values [NUM_LEDS - 1] = i ;
- }
- }
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