Revision 0:507436d37d5e, committed 2012-10-15

Comitter:

robt

Date:

Mon Oct 15 21:23:48 2012 +0000

Commit message:

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

Changed in this revision

diff -r 000000000000 -r 507436d37d5e HostIO.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/HostIO.cpp	Mon Oct 15 21:23:48 2012 +0000
@@ -0,0 +1,15 @@
+/* Program Example 6.8: HostIO.cpp code for modular 7-seg keyboard controller 
+                                                                            */
+#include "HostIO.h"
+
+Serial pc(USBTX, USBRX);       // communication to host PC
+
+void HostInit(void) {
+  pc.printf("\n\rType two digit numbers to be \n\r");
+}
+
+char GetKeyInput(void) {
+  char c = pc.getc();    // get keyboard ascii data
+  pc.printf("%c",c);     // print ascii value to host PC terminal
+  return (c&0x0F);       // return value as non-ascii 
+}

diff -r 000000000000 -r 507436d37d5e HostIO.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/HostIO.h	Mon Oct 15 21:23:48 2012 +0000
@@ -0,0 +1,13 @@
+/* Program Example 6.9: HostIO.h code for modular 7-seg keyboard controller 
+                                                                           */
+#ifndef HOSTIO_H
+
+#define HOSTIO_H
+#include "mbed.h"
+
+extern Serial pc;        // allow pc to be manipulated by other files
+
+void HostInit(void);     // function prototype
+char GetKeyInput(void);  // function prototype
+
+#endif 

diff -r 000000000000 -r 507436d37d5e SegDisplay.cpp
--- /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;
+} 

diff -r 000000000000 -r 507436d37d5e SegDisplay.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SegDisplay.h	Mon Oct 15 21:23:48 2012 +0000
@@ -0,0 +1,14 @@
+/* Program Example 6.7: SegDisplay.h file for modular 7-seg keyboard controller 
+                                                                 */
+#ifndef SEGDISPLAY_H
+#define SEGDISPLAY_H
+
+#include "mbed.h"  
+                 
+extern BusOut Seg1;     // allow Seg1 to be manipulated by other files
+extern BusOut Seg2;     // allow Seg2 to be manipulated by other files
+
+void SegInit(void);                  // function prototype
+char SegConvert(char SegValue);      // function prototype
+
+#endif 

diff -r 000000000000 -r 507436d37d5e main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Oct 15 21:23:48 2012 +0000
@@ -0,0 +1,21 @@
+/* Program Example 6.5: main.cpp file for modular 7-seg keyboard controller
+
+This example program includes example code PE6.06, PE6.07, PE6.08, PE6.09
+                                                                           */
+#include "mbed.h"
+#include "HostIO.h"
+#include "SegDisplay.h"
+char data1, data2;                    // variable declarations
+
+int main() {                          // main program
+  SegInit();                          // call init function 
+  HostInit();                         // call init function
+  while (1) {                         // infinite loop
+    data2 = GetKeyInput();            // call to get 1st key press
+    Seg2  = SegConvert(data2);        // call to convert and output
+    data1 = GetKeyInput();            // call to get 2nd key press
+    Seg1  = SegConvert(data1);        // call to convert and output
+    pc.printf("  ");                  // display spaces on host
+  }
+} 
+

diff -r 000000000000 -r 507436d37d5e mbed.bld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Mon Oct 15 21:23:48 2012 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/cd19af002ccc
\ No newline at end of file