Diff: main.cpp

Revision:

0:b738c2b5c143

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Oct 15 21:22:04 2012 +0000
@@ -0,0 +1,38 @@
+/* Program Example 6.1: seven-segment display counter 
+                                                              */
+#include "mbed.h" 
+
+BusOut Seg1(p5,p6,p7,p8,p9,p10,p11,p12); // A,B,C,D,E,F,G,DP
+char SegConvert(char SegValue);          // function prototype
+char A=0;                               // declare variables A and B
+char B;
+
+int main() {                            // main program
+  while (1) {                           // infinite loop
+    B=SegConvert(A);                    // Call function to return B
+    Seg1=B;                             // Output B
+    A++;                                // increment A
+    if (A>0x09){                        // if A > 9 reset to zero
+          A=0;
+       }
+    wait(0.5);                          // delay 500 milliseconds
+  }
+}
+
+char SegConvert(char SegValue) {        // function 'SegConvert'
+  char SegByte=0x00;
+  switch (SegValue) {                   //DP G F E D C B A
+    case 0 : SegByte = 0x3F;break;      // 0 0 1 1 1 1 1 1 binary
+    case 1 : SegByte = 0x06;break;      // 0 0 0 0 0 1 1 0 binary
+    case 2 : SegByte = 0x5B;break;      // 0 1 0 1 1 0 1 1 binary
+    case 3 : SegByte = 0x4F;break;      // 0 1 0 0 1 1 1 1 binary
+    case 4 : SegByte = 0x66;break;      // 0 1 1 0 0 1 1 0 binary
+    case 5 : SegByte = 0x6D;break;      // 0 1 1 0 1 1 0 1 binary
+    case 6 : SegByte = 0x7D;break;      // 0 1 1 1 1 1 0 1 binary
+    case 7 : SegByte = 0x07;break;      // 0 0 0 0 0 1 1 1 binary
+    case 8 : SegByte = 0x7F;break;      // 0 1 1 1 1 1 1 1 binary
+    case 9 : SegByte = 0x6F;break;      // 0 1 1 0 1 1 1 1 binary
+  }
+    return SegByte;
+}
+