initial cleanup and mapping

examples/softPwm.c

@@ -0,0 +1,89 @@
+/*
+ * 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 ;
+  }
+}