Derek Calland
Hex Values when using a Common Cathode arrangement for the LED's
Revision 0:c973368c963d, committed 2013-03-13
- Comitter:
- Degs
- Date:
- Wed Mar 13 21:01:58 2013 +0000
- Commit message:
- For Newbies to compare Hex values for LED's
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
| mbed.bld | Show annotated file Show diff for this revision Revisions of this file |
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Wed Mar 13 21:01:58 2013 +0000
@@ -0,0 +1,46 @@
+/*Program Example 3.5: Simple demonstration of 7-segment display. Display digits 0 to 9 in turn.
+ */
+#include "mbed.h"
+BusOut display_units(p5,p6,p7,p8,p9,p10,p11,p12); // segments a,b,c,d,e,f,g,DP
+BusOut display_tens(p21,p22,p23,p24,p25,p26,p27,p28);
+DigitalOut Seconds_Ticker(p30);
+
+char SegConvert( char SegValue);
+
+int main()
+{
+ while(1) {
+ for(char j=0; j<10; j++) {
+ display_tens = SegConvert(j);
+ for(char i=0; i<10; i++) {
+ display_units = SegConvert(i);
+ for(int s=0;s<60; s++) {
+ Seconds_Ticker = 1;
+ wait(0.5);
+ Seconds_Ticker = 0;
+ wait(0.5);}
+ }
+ }
+ }
+}
+
+char SegConvert(char SegValue)
+{
+ 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
+ //display 0
+ case 1: SegByte = 0x86; break; //1 0 0 0 0 1 1 0
+ //display 1 + DP
+ case 2: SegByte = 0x5B; break;
+ case 3: SegByte = 0x4F; break;
+ case 4: SegByte = 0x66; break;
+ case 5: SegByte = 0x6D; break;
+ case 6: SegByte = 0x7D; break;
+ case 7: SegByte = 0x07; break;
+ case 8: SegByte = 0x7F; break;
+ case 9: SegByte = 0x6F; break;
+ } //end of switch
+ return SegByte;
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Wed Mar 13 21:01:58 2013 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/3d0ef94e36ec \ No newline at end of file