Merged from git.drogon.net, SPI driver helpers, C++ wrappers, softPwm, piNes, gertboard, SPI

examples/softPwm.c

@@ -0,0 +1,69 @@
+
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+
+#include <wiringPi.h>
+#include <softPwm.h>
+
+#define RANGE		100
+#define	NUM_LEDS	 12
+
+int ledMap [NUM_LEDS] = { 0, 1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 13 } ;
+
+int values [NUM_LEDS] = { 0, 17, 32, 50, 67, 85, 100, 85, 67, 50, 32, 17 } ;
+
+int main ()
+{
+  int i, j ;
+  char buf [80] ;
+
+  if (wiringPiSetup () == -1)
+  {
+    fprintf (stdout, "oops: %s\n", strerror (errno)) ;
+    return 1 ;
+  }
+
+  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) ;
+
+// Down fast
+
+  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 ;
+  }
+}