by Rob Toulson and Tim Wilmshurst from textbook "Fast and Effective Embedded Systems Design: Applying the ARM mbed"
main.cpp@0:faf907fb2777, 2012-10-15 (annotated)
- Committer:
- robt
- Date:
- Mon Oct 15 21:22:39 2012 +0000
- Revision:
- 0:faf907fb2777
by Rob Toulson and Tim Wilmshurst from textbook "Fast and Effective Embedded Systems Design: Applying the ARM mbed"
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
robt | 0:faf907fb2777 | 1 | /* Program Example 6.2: Display counter for 0-99 |
robt | 0:faf907fb2777 | 2 | */ |
robt | 0:faf907fb2777 | 3 | #include "mbed.h" |
robt | 0:faf907fb2777 | 4 | BusOut Seg1(p5,p6,p7,p8,p9,p10,p11,p12); // A,B,C,D,E,F,G,DP |
robt | 0:faf907fb2777 | 5 | BusOut Seg2(p13,p14,p15,p16,p17,p18,p19,p20); |
robt | 0:faf907fb2777 | 6 | |
robt | 0:faf907fb2777 | 7 | char SegConvert(char SegValue); // function prototype |
robt | 0:faf907fb2777 | 8 | int main() { // main program |
robt | 0:faf907fb2777 | 9 | while (1) { // infinite loop |
robt | 0:faf907fb2777 | 10 | for (char j=0;j<10;j++) { // counter loop 1 |
robt | 0:faf907fb2777 | 11 | Seg2=SegConvert(j); // tens column |
robt | 0:faf907fb2777 | 12 | for (char i=0;i<10;i++) { // counter loop 2 |
robt | 0:faf907fb2777 | 13 | Seg1=SegConvert(i); // units column |
robt | 0:faf907fb2777 | 14 | wait(0.2); |
robt | 0:faf907fb2777 | 15 | } |
robt | 0:faf907fb2777 | 16 | } |
robt | 0:faf907fb2777 | 17 | } |
robt | 0:faf907fb2777 | 18 | } |
robt | 0:faf907fb2777 | 19 | |
robt | 0:faf907fb2777 | 20 | |
robt | 0:faf907fb2777 | 21 | |
robt | 0:faf907fb2777 | 22 | char SegConvert(char SegValue) { // function 'SegConvert' |
robt | 0:faf907fb2777 | 23 | char SegByte=0x00; |
robt | 0:faf907fb2777 | 24 | switch (SegValue) { //DP G F E D C B A |
robt | 0:faf907fb2777 | 25 | case 0 : SegByte = 0x3F;break; // 0 0 1 1 1 1 1 1 binary |
robt | 0:faf907fb2777 | 26 | case 1 : SegByte = 0x06;break; // 0 0 0 0 0 1 1 0 binary |
robt | 0:faf907fb2777 | 27 | case 2 : SegByte = 0x5B;break; // 0 1 0 1 1 0 1 1 binary |
robt | 0:faf907fb2777 | 28 | case 3 : SegByte = 0x4F;break; // 0 1 0 0 1 1 1 1 binary |
robt | 0:faf907fb2777 | 29 | case 4 : SegByte = 0x66;break; // 0 1 1 0 0 1 1 0 binary |
robt | 0:faf907fb2777 | 30 | case 5 : SegByte = 0x6D;break; // 0 1 1 0 1 1 0 1 binary |
robt | 0:faf907fb2777 | 31 | case 6 : SegByte = 0x7D;break; // 0 1 1 1 1 1 0 1 binary |
robt | 0:faf907fb2777 | 32 | case 7 : SegByte = 0x07;break; // 0 0 0 0 0 1 1 1 binary |
robt | 0:faf907fb2777 | 33 | case 8 : SegByte = 0x7F;break; // 0 1 1 1 1 1 1 1 binary |
robt | 0:faf907fb2777 | 34 | case 9 : SegByte = 0x6F;break; // 0 1 1 0 1 1 1 1 binary |
robt | 0:faf907fb2777 | 35 | } |
robt | 0:faf907fb2777 | 36 | return SegByte; |
robt | 0:faf907fb2777 | 37 | } |
robt | 0:faf907fb2777 | 38 | |
robt | 0:faf907fb2777 | 39 | |
robt | 0:faf907fb2777 | 40 |