Diff: main.cpp

Revision:

0:045a3e5d8f7d

Child:

1:0286d548948b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Aug 26 23:58:04 2010 +0000
@@ -0,0 +1,41 @@
+#include "mbed.h"
+
+AnalogOut aout(p18);
+AnalogIn ain(p20);
+// Jumper p18 to p20 for analog loopback test
+BusOut led_state(LED1, LED2, LED3, LED4);
+// Analog input connected to analog output will display in LED Bar Graph
+int LED_BarGraph(float max_value, float value);
+
+int main() {
+    while (1) {
+        for (float i=0.0; i<1.0; i+=0.1) {
+            aout = 1 - sin(i*2*3.14159265);
+            LED_BarGraph(1.0, ain);
+            wait(0.1);
+        }
+    }
+}
+
+int LED_BarGraph(float max_value,float value) {
+    int scale;
+    scale = (value*4.5)/max_value;
+    switch (scale) {
+        case 0:
+            led_state = 0x00;
+            break;
+        case 1:
+            led_state = 0x01;
+            break;
+        case 2:
+            led_state = 0x03;
+            break;
+        case 3:
+            led_state = 0x07;
+            break;
+        default:
+            led_state = 0x0F;
+            break;
+    }
+    return 0;
+}
\ No newline at end of file