Diff: main.cpp

Revision:

0:3a382b72adfb

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Mar 06 13:43:12 2017 +0000
@@ -0,0 +1,43 @@
+#include "DDBooster.h"
+
+#define LEDS 20
+
+int main()
+{
+    // get the instance of DDBooster with configured SPI pins
+    DDBooster booster(SPI_MOSI, SPI_SCK, SPI_CS);
+    
+    // tell the number of LEDs used
+    booster.init(LEDS);
+
+    // we start outside from -8 to 0. first led has always index 0
+    // both values define the length of the drop
+    int16_t start = -8, end = 0;
+    // show a gradient from white to blue
+    uint8_t startColor[] = {60, 60, 60};
+    uint8_t endColor[] = {0, 0, 60};
+
+    while(1) {
+        // turn all leds off
+        booster.clearAll();
+        // set gradient with current values
+        booster.setGradient(start, end, startColor, endColor);
+        // commit it
+        booster.show();
+
+        // when the start index runs out of visible area (last led has index led_count - 1)
+        // start from the beginning, otherwise increment the start and end postitions
+        if (start == LEDS) {
+            start = -8;
+            end = 0;
+            // delay between the drops
+            wait_ms(1000);
+        } else {
+            start++;
+            end++;
+        }
+
+        // changing the value makes the drop fall faster or slower
+        wait_ms(20);
+    }
+}
\ No newline at end of file