Rob Toulson / Mbed 2 deprecated PE_06-05_ModularCodeExample

by Rob Toulson and Tim Wilmshurst from textbook "Fast and Effective Embedded Systems Design: Applying the ARM mbed"

Dependencies:   mbed

Diff: SegDisplay.cpp

Revision:
0:507436d37d5e
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SegDisplay.cpp	Mon Oct 15 21:23:48 2012 +0000
@@ -0,0 +1,27 @@
+/* Program Example 6.6: SegDisplay.cpp file for modular 7-seg keyboard controller 
+                                                                  */
+#include "SegDisplay.h"
+BusOut Seg1(p5,p6,p7,p8,p9,p10,p11,p12);      // A,B,C,D,E,F,G,DP
+BusOut Seg2(p13,p14,p15,p16,p17,p18,p19,p20); // A,B,C,D,E,F,G,DP
+
+void SegInit(void) {
+  Seg1=SegConvert(0);        // initialise to zero
+  Seg2=SegConvert(0);        // initialise to zero
+}
+
+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;
+}