Crimson Embedded
/
rei_led_walk
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Diff: main.cpp
- Revision:
- 0:815f11c4396f
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Wed Oct 20 21:03:52 2010 +0000
@@ -0,0 +1,54 @@
+#include "mbed.h"
+
+// LED1 = P1.18 LED2 = P1.20 LED3 = P1.21 LED4 = P1.23
+
+#define SPEED 0.125
+
+#define LED_MASK 0x00B40000
+#define LED1 0x00040000
+#define LED2 0x00100000
+#define LED3 0x00200000
+#define LED4 0x00800000
+void setled(char);
+
+
+int ledarray[]={LED1,LED2,LED3,LED4};
+
+PortOut ledport(Port1, LED_MASK);
+
+int main() {
+ char a=1;
+
+ while(1)
+ {
+ while (a<8)
+ {
+ setled(a);
+ wait(SPEED);
+ setled(0);
+ a<<=1;
+ }
+ while (a>1)
+ {
+ setled(a);
+ wait(SPEED);
+ setled(0);
+ a>>=1;
+ }
+ }
+}
+
+void setled(char value)
+{
+ int mask=0;
+
+ for (int i=0;i<4;i++)
+ {
+ if (value&1)
+ {
+ mask|=ledarray[i];
+ }
+ value>>=1;
+ }
+ ledport=mask;
+}
\ No newline at end of file